Faculty Profiles - ASAKAWA, Susumu

Papers - ASAKAWA, Susumu

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Characterization and Assessment of Iron-Reducing Capacity of Cultivable Bacteria from Iron-Toxic Rice Soils in Burkina Faso Reviewed International coauthorship

Otoidobiga, CH; Ouédraogo, WP; Sawadogo, A; Somé, E; Bationo, KS; Barro, MB; Asakawa, S; Dianou, D; Wonni, I; Maïga, Y; Ouattara, AS; Traoré, AS

CURRENT MICROBIOLOGY Vol. 83 ( 1 ) page： 12 2025.11

Can Drainage, Dolomite, and Natural Phosphate Application Control Iron and Sulfide Content in Iron-Toxic Irrigated Rice Fields? Reviewed International coauthorship Open Access

Cécile Harmonie Otoidobiga , Louis P. Yameogo, Pauline W. Ouedraogo, Kevin Stanislas Bationo, Massiribi Bintou Barro, Ganda Samiratou Zongo, Susumu Assakawa, Dayeri Dianou, Issa Wonni, Ynoussa Maïga, Aboubakar S. Ouattara

Agricultural Sciences Vol. 16 ( 9 ) page： 901 - 924 2025.9

Paddy-upland rotation makes distinct impacts on the abundance of methane-oxidizing and ammonia-oxidizing microbial communities in paddy field soil Reviewed International coauthorship

Sawadogo, JB; Alam, MS; Suekuni, C; Liu, DY; Ishikawa, H; Nishida, M; Tsuchiya, K; Takahashi, T; Asakawa, S

SOIL SCIENCE AND PLANT NUTRITION Vol. 71 ( 5 ) page： 556 - 563 2025.9

Local methanogenesis drives significant methane emissions from upper tree trunks in a cool-temperate upland forest Reviewed International coauthorship

Mochidome, T; Hölttä, T; Asakawa, S; Watanabe, T; Dannoura, M; Epron, D

NEW PHYTOLOGIST Vol. 247 ( 5 ) page： 2049 - 2062 2025.9

Group-specific Quantification of mcrA genes of Methanogenic Archaea and "Candidatus Methanoperedens" by Digital PCR Reviewed

Watanabe, T; Endo, A; Hamada, R; Shinjo, R; Asakawa, S

MICROBES AND ENVIRONMENTS Vol. 40 ( 2 ) 2025.5

水田の土壌肥沃度におけるカリウムの貯蔵者・供給者としての微生物バイオマスの意義 Invited Reviewed Open Access

浅川　晋、山下昂平、床並佳季

日本土壌肥料学雑誌 Vol. 96 ( 2 ) page： 131 - 135 2025.4

Expanding the Eco-collection of Methane-oxidizing Bacteria Inhabiting Rice Roots: Cultivation, Isolation, and Genomic Characterization of Isolates Reviewed Open Access

Oe, F; Shinjo, R; Masuda, S; Shibata, A; Shirasu, K; Hashimoto, S; Mitsui, H; Sato, S; Watanabe, T; Asakawa, S

MICROBES AND ENVIRONMENTS Vol. 40 ( 4 ) 2025

Transcription of Nitrogen Fixation Genes Is Enhanced at Unfavorably High Oxygen Concentrations for Diazotrophic Growth in a Methane-oxidizing Bacterium Reviewed International coauthorship Open Access

Abdela, AA; Shinjo, R; Watanabe, T; Asakawa, S; Masuda, S; Shibata, A; Shirasu, K; Minamisawa, K; Sato, S; Mitsui, H

MICROBES AND ENVIRONMENTS Vol. 40 ( 4 ) 2025

Ubiquity of methanogenic archaea in the trunk of coniferous and broadleaved tree species in a mountain forest Reviewed International coauthorship

Harada, M; Endo, A; Wada, S; Watanabe, T; Epron, D; Asakawa, S

ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY Vol. 117 ( 1 ) page： 107 2024.12

水田に蓄積する土壌有機物－その特徴と動態 Invited

高橋智紀、渡邉彰、矢内純太、柴原藤善、松浦庄司、東英男、浅川晋

日本土壌肥料学雑誌 Vol. 95 ( 4 ) page： 204 - 209 2024.8

Editorial: Recent advances in biology and fertility studies of paddy field soil Invited International coauthorship

Asakawa, S; Nishida, M; Adhya, TK; Inubushi, K

BIOLOGY AND FERTILITY OF SOILS Vol. 60 ( 6 ) page： 727 - 728 2024.8

土壌微生物バイオマスカリウムー見過ごされてきた作物へのカリウムの重要な供給源ー Invited

浅川晋、山下昂平、床並佳季

作物生産と土づくり Vol. 56 ( 4 ) page： 59 - 62 2024.7

Investigation of iron-reducing and iron-oxidizing bacterial communities in the rice rhizosphere of iron-toxic paddy field: a case study in Burkina Faso, West Africa Reviewed International coauthorship Open Access

Watanabe, T; Kato, K; Kawaguchi, K; Oga, T; Ban, YSNR; Otoidobiga, CH; Sawadogo, A; Wonni, I; Ouedraogo, LS; Zongo, JD; Dianou, D; Asakawa, S

SOIL SCIENCE AND PLANT NUTRITION Vol. 69 ( 5-6 ) page： 283 - 293 2023.11

Type-specific quantification of particulate methane monooxygenase gene of methane-oxidizing bacteria at the oxic-anoxic interface of a surface paddy soil by digital PCR Reviewed Open Access

Shinjo, R; Oe, F; Nakagawa, K; Murase, J; Asakawa, S; Watanabe, T

ENVIRONMENTAL MICROBIOLOGY REPORTS Vol. 15 ( 5 ) page： 392 - 403 2023.10

水田でメタンの生成と消去に関わる微生物 Invited

浅川晋, 渡邉健史, 新庄莉奈, 大江史花

アグリバイオ Vol. 7 ( 11 ) page： 9 - 13 2023.10

Methylocystis iwaonis sp. nov., a type II methane- oxidizing bacterium from surface soil of a rice paddy field in Japan, and emended description of the genus Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993 Reviewed International coauthorship Open Access

Kaise, H; Sawadogo, JB; Alam, MS; Ueno, C; Dianou, D; Shinjo, R; Asakawa, S

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY Vol. 73 ( 6 ) page： 005925 - 005925 2023.6

イネの生育を支える水田の微生物と物質循環 Invited

浅川　晋

温古知新 Vol. 59 page： 117 - 122 2022.7

Pool size of microbial biomass potassium in various farmland soils Reviewed

Yamashita Kohei, Nishida Mizuhiko, Akita Kazunori, Ito Toyoaki, Saito Masanori, Honjo Hiroki, Shinohara Makoto, Asakawa Susumu

SOIL SCIENCE AND PLANT NUTRITION Vol. 68 ( 3 ) page： 400 - 408 2022.5

Estimation of turnover time of microbial biomass potassium in paddy field soil Reviewed

Tokonami Yoshiki, Funao Taketo, Oga Toshiya, Nishida Mizuhiko, Takahashi Tomoki, Asakawa Susumu

SOIL SCIENCE AND PLANT NUTRITION Vol. 68 ( 2 ) page： 275 - 283 2022.3

Evaluation of Disease Suppressiveness of Soils in Croplands by Co-Cultivation of Pathogenic Fusarium oxysporum and Indigenous Soil Microorganisms Reviewed Open Access

Mitsuboshi, M; Kioka, Y; Noguchi, K; Asakawa, S

MICROBES AND ENVIRONMENTS Vol. 37 ( 4 ) 2022

eDNA解析を利用した土壌微生物機能への太陽熱土壌消毒の影響評価法 Invited Reviewed Open Access

浅川　晋・村瀬　潤・篠原陽子

日本土壌肥料学雑誌 Vol. 92 ( 6 ) page： 476 - 480 2021.12

日本人の主食　お米の生産を支える微生物 Invited Reviewed Open Access

浅川　晋

土と微生物 Vol. 75 ( 2 ) page： 66 - 69 2021.10

Ecology of methanogenic and methane-oxidizing microorganisms in paddy soil ecosystem Invited Reviewed Open Access

Asakawa, S

SOIL SCIENCE AND PLANT NUTRITION Vol. 67 ( 5 ) page： 520 - 526 2021.9

Complete Genome Sequence of Ferrigenium kumadai An22, a Microaerophilic Iron-Oxidizing Bacterium Isolated from a Paddy Field Soil Reviewed International coauthorship Open Access

Watanabe, T; Khalifa, A; Asakawa, S

MICROBIOLOGY RESOURCE ANNOUNCEMENTS Vol. 10 ( 27 ) page： e0034621 2021.7

Dispersal history of Miniopterus fuliginosus bats and their associated viruses in east Asia Reviewed International coauthorship Open Access

Kimprasit, T; Nunome, M; Iida, K; Murakami, Y; Wong, ML; Wu, CH; Kobayashi, R; Hengjan, Y; Takemae, H; Yonemitsu, K; Kuwata, R; Shimoda, H; Si, LF; Sohn, JH; Asakawa, S; Ichiyanagi, K; Maeda, K; Oh, HS; Mizutani, T; Kimura, J; Iida, A; Hondo, E

PLOS ONE Vol. 16 ( 1 ) page： e0244006 2021.1

Influence of alternate wetting and drying water-saving irrigation practice on the dynamics of Gallionella-related iron-oxidizing bacterial community in paddy field soil Reviewed International coauthorship

Watanabe, T; Katayanagi, N; Agbisit, R; Llorca, L; Hosen, Y; Asakawa, S

SOIL BIOLOGY & BIOCHEMISTRY Vol. 152 page： 108064 2021.1

Susceptibility and resilience of the soil ciliate community to high temperatures Reviewed Open Access

Oshima, T; Shinohara, Y; Asakawa, S; Murase, J

SOIL SCIENCE AND PLANT NUTRITION Vol. 66 ( 6 ) page： 870 - 877 2020.11

Involvement of microaerophilic iron-oxidizing bacteria in the iron-oxidizing process at the surface layer of flooded paddy field soil Reviewed

Nakagawa, K; Murase, J; Asakawa, S; Watanabe, T

JOURNAL OF SOILS AND SEDIMENTS Vol. 20 ( 11 ) page： 4034 - 4041 2020.11

水田土壌生態系におけるメタンの生成・酸化に関わる微生物の生態に関する研究 Invited Open Access

浅川　晋

日本土壌肥料学雑誌 Vol. 91 ( 5 ) page： 309 - 312 2020.10

Long-term submergence of non-methanogenic oxic upland field soils helps to develop the methanogenic archaeal community as revealed by pot and field experiments Invited Reviewed

Watanabe Takeshi, Asakawa Susumu, Hayano Koichi

Pedosphere Vol. 30 ( 1 ) page： 62 - 72 2020.2

Invention of Artificial Rice Field Soil: A Tool to Study the Effect of Soil Components on the Activity and Community of Microorganisms Involved in Anaerobic Organic Matter Decomposition Reviewed International coauthorship Open Access

Maeda Yu, Mise Kazumori, Iwasaki Wataru, Watanabe Akira, Asakawa Susumu, Asiloglu Rasit, Murase Jun

MICROBES AND ENVIRONMENTS Vol. 35 ( 4 ) page： ME20093 2020

Community structure of microaerophilic iron-oxidizing bacteria in Japanese paddy field soils Reviewed Open Access

Naruse Tatsushi, Ban Yoshinori, Yoshida Tomofumi, Kato Takahiro, Namikawa Mari, Takahashi Tomoki, Nishida Mizuhiko, Asakawa Susumu, Watanabe Takeshi

Soil Science and Plant Nutrition Vol. 65 ( 5 ) page： 460 - 470 2019.9

アガロースゲル電気泳動を用いたamoAのPCR増副産物検出による太陽熱消毒処理土壌中のアンモニア酸化細菌存在量の変動評価 Reviewed Open Access

山縣実奈・篠原陽子・前坂昌宏・横江和典・村瀬　潤・浅川　晋

土と微生物 Vol. 73 ( 1 ) page： 34 - 38 2019.4

Quantification of hydrogen production by intestinal bacteria that are specifically dysregulated in Parkinson's disease Reviewed Open Access

Suzuki Anzu, Ito Mikako, Hamaguchi Tomonori, Mori Hiroshi, Takeda Yuka, Baba Ryuko, Watanabe Takeshi, Kurokawa Ken, Asakawa Susumu, Hirayama Masaaki, Ohno Kinji

PLOS ONE Vol. 13 ( 12 ) page： e0208313 2018.12

Ferrigenium kumadai gen. nov., sp nov., a microaerophilic iron-oxidizing bacterium isolated from a paddy field soil Reviewed International coauthorship Open Access

Khalifa Ashraf, Nakasuji Yuta, Saka Norikuni, Honjo Hiroki, Asakawa Susumu, Watanabe Takeshi

International Journal of Systematic and Evolutionary Microbiology Vol. 68 ( 8 ) page： 2587 - 2592 2018.8

Transcription of mcrA gene decreases upon prolonged non-flooding period in a methanogenic archaeal community of a paddy-upland rotational field soil Reviewed International coauthorship

Liu Dongyan, Nishida Mizuhiko, Takahashi Tomoki, Asakawa Susumu

Microbial Ecology Vol. 75 ( 3 ) page： 751 - 760 2018.4

Evaluation of suppressiveness of soils exhibiting soil-borne disease suppression after long-term application of organic amendments by the co-cultivation method of pathogenic Fusarium oxysporum and indigenous soil microorganisms. Reviewed Open Access

Mitsuboshi M, Kioka Y, Noguchi K, Asakawa S

Microbes and Environments Vol. 33 ( 1 ) page： 58 - 65 2018.3

Conversion factor (k factor) for estimation of soil microbial biomass potassium by the chloroform-fumigation extraction method Reviewed Open Access

Yamashita Kohei, Honjo Hiroki, Shinohara Makoto, Asakawa Susumu

Soil Science and Plant Nutrition Vol. 64 ( 4 ) page： 465 - 468 2018

植物へのカリウム供給源としての土壌微生物バイオマスー土壌微生物は窒素やリンだけでなくカリウムも抱え込んでいる Invited Reviewed Open Access

浅川　晋・山下昂平

化学と生物 Vol. 55 ( 7 ) page： 444 - 445 2017.7

Transcription of [FeFe]-hydrogenase genes during H2 production in Clostridium and Desulfovibrio spp. isolated from a paddy field soil Reviewed Open Access

Ryuko Baba, Mayumi Morita, Susumu Asakawa, Takeshi Watanabe

Microbes Environ. Vol. 32 ( 2 ) page： 125 - 132 2017.6

An Evaluation Method for Suppression of Pathogenic Fusarium oxysporum by Soil Microorganisms Using the Dilution Plate Technique (vol 31, pg 307, 2016) Open Access

Mitsuboshi, M; Kioka, Y; Noguchi, K; Asakawa, S

MICROBES AND ENVIRONMENTS Vol. 32 ( 2 ) page： 184 - 184 2017.6

Bacterial community incorporating carbon derived from plant residue in an anoxic non-rhizosphere soil estimated by DNA-SIP analysis Reviewed International coauthorship

Chol Gyu Lee, Takeshi Watanabe, Susumu Asakawa

J. Soils. Sediments. Vol. 17 ( 4 ) page： 1084 - 1091 2017.4

Fluctuations in the abundance of ammonia oxidizers and the contents of inorganic nitrogen in solarized soil Reviewed Open Access

Mina Yamagata, Yoko Shinohara, Masahiro Maesaka, Jun Murase, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 63 ( 5 ) page： 434 - 440 2017

Effect of combined application of subsurface drainage and mineral fertilization on iron-reducing bacterial populations' developments and Fe2+ uptake by two rice varieties in an iron toxic paddy soil of Burkina Faso (west Africa) Reviewed International coauthorship Open Access

Cécile Harmonie Otoidobiga, Honoré Kam, Adama Bagayogo, Aboubacar Savadogo, Joseph B. Sawadogo, Sayouba Sawadogo, Adama Sawadogo, Yapi Sinaré, Ibrahima Ouédraogo, Prosper Zombré, Susumu Asakawa, Alfred S. Traoré, Dayéri Dianou

Agricultural Sciences Vol. 7 page： 783 - 804 2016.11

H2-producing bacterial community during rice straw decomposition in paddy field soil: estimation by an analysis of [FeFe]-hydrogenase gene transcripts Reviewed Open Access

Ryuko Baba, Susumu Asakawa, Takeshi Watanabe

Microbes Environ. Vol. 31 page： 226 - 233 2016.9

Effect of elevated CO2 concentration, elevated temperature and no nitrogen fertilization on methanogenic archaeal and methane-oxidizing bacterial community structures in paddy soil Reviewed International coauthorship Open Access

Dongyan Liu, Kanako Tago, Masahito Hayatsu, Takeshi Tokida, Hidemitsu Sakai, Hirofumi Nakamura, Yasuhiro Usui, Toshihiro Hasegawa, Susumu Asakawa

Microbes Environ. Vol. 31 page： 349 - 356 2016.9

An evaluation method for the suppression of pathogenic Fusarium oxysporum by soil microorganisms using the dilution plate technique Reviewed Open Access

Masahiro Mitsuboshi, Yuuzou Kioka, Katsunori Noguchi, Susumu Asakawa

Microbes Environ. Vol. 31 page： 307 - 313 2016.9

Effect of fertilization on the dynamics and activity of iron-reducing bacterial populations in a west African rice paddy soil planted with two rice varieties: case study of Kou Valley in Burkina Faso Reviewed International coauthorship Open Access

Cècile Harmonie Otoidobiga, Adama Sawadogo, Yapi Sinarè, Ibrahima Ouèdraogo, Prosper Zombrè, Susumu Asakawa, Alfred S. Traore, Dayèri Dianou

J. Environ. Prot. Vol. 7 page： 1119 - 1131 2016.7

土壌と東西の神々 International coauthorship Open Access

谷山一郎・浅川　晋・奈良吉則・程　為国・齋藤雅典・陽　捷行

日本土壌肥料学雑誌 Vol. 87 ( 2 ) page： 147 - 152 2016.4

Global change pressures on soils from land use and management Reviewed International coauthorship Open Access

Pete Smith, Joanna I. House, Mercedes Bustamante, Jaroslava Sobocká, Richard Harper, Genxing Pan, Paul C. West, Joanna M. Clark, Tapan Adhya, Cornelia Rumpel, Keith Paustian, Peter Kuikman, M. Francesca Cotrufo, Jane A. Elliott, Richard McDowell, Robert I. Griffiths, Susumu Asakawa, Alberte Bondeau, Atul K. Jain, Jeroen Meersmans and Thomas A. M. Pugh

Global Change Biol. Vol. 22 page： 1008 - 1028 2016.3

冬期湛水が水田の土壌微生物群集に及ぼす影響 Invited International coauthorship Open Access

浅川晋・末國千佳・劉冬艶・秋田和則・宇野　亨・田島亮介・伊藤豊彰・齋藤雅典

農業および園芸 Vol. 91 ( 1 ) page： 129 - 139 2016.1

Impact of soil solarization on the ciliate community structure of a greenhouse soil Reviewed International coauthorship Open Access

Jun Murase, Yoko Shinohara, Kazunori Yokoe, Risa Matsuda, Susumu Asakawa, Tomoyoshi Hashimoto

Soil Sci. Plant Nutr. Vol. 61 page： 927 - 933 2015.12

第12回東・東南アジア土壌科学連合会議（12th ESAFS）報告

高階史章・西田瑞彦・浅川　晋

日本土壌肥料学雑誌 Vol. 86 ( 6 ) page： 600 2015.12

Biogeochemical cycles and biodiversity as key drivers of ecosystem services provided by soils Reviewed International coauthorship Open Access

P. Smith, M.F. Cotrufo, C. Rumpel, K. Paustian, P.J. Kuikman, J.A. Elliott, R. McDowell, R.I. Griffiths, S. Asakawa, M. Bustamante, J.I. House, J. Sobock, R. Harper, G. Pan, P.C. West, J.S. Gerber, J.M. Clark, T. Adhya, R.J. Scholes, M.C. Scholes

Soil Vol. 1 page： 665 - 685 2015.11

Methylomagnum ishizawai gen. nov., sp. nov., a mesophilic type I methanotroph isolated from rice rhizosphere Reviewed International coauthorship Open Access

Ashraf Khalifa, Chol Gyu Lee, Takuya Ogiso, Chihoko Ueno, Dayeri Dianou, Toyoko Demachi, Arata Katayama, Susumu Asakawa

Int. J. Syst. Evol. Microbiol. Vol. 65 page： 3527 - 3534 2015.10

Community structure of microeukariotes in a rice rhizosphere revealed by DNA-based PCR-DGGE Reviewed International coauthorship Open Access

Rasit Asiloglu, Hiroki Honjo, Norikuni Saka, Susumu Asakawa, Jun Murase

Soil Sci. Plant Nutr. Vol. 61 page： 761 - 768 2015.10

Solarization makes a great impact on the abundance and composition of microbial communities in soil Reviewed Open Access

Kazunori Yokoe, Masahiro Maesaka, Jun Murase, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 61 page： 641 - 652 2015.9

Elevated atmospheric CO2 levels affect community structure of rice root-associated bacteria Reviewed International coauthorship Open Access

Takashi Okubo, Dongyan Liu, Hirohito Tsurumaru, Seishi Ikeda, Susumu Asakawa, Takeshi Tokida, Kanako Tago, Masahito Hayatsu, Naohiro Aoki, Ken Ishimaru, Kazuhiro Ujiie, Yasuhiro Usui, Hirofumi Nakamura, Hidemitsu Sakai, Kentaro Hayashi, Toshihiro Hasegawa, Kiwamu Minamisawa

Front. Microbiol. Vol. 6 page： 136 2015.2

Effect of paddy-upland rotation on methanogenic archaeal community structure in paddy field soil Reviewed International coauthorship

Dongyan Liu, Hiroki Ishikawa, Mizuhiko Nishida, Kazunari Tsuchiya, Tomoki Takahashi, Makoto Kimura, Susumu Asakawa

Microb. Ecol. Vol. 69 page： 160 - 168 2015.1

Estimation of microbial biomass potassium in paddy field soil Reviewed

Kohei Yamashita, Hiroki Honjo, Mizuhiko Nishida, Makoto Kimura, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 60 page： 512 - 519 2014.8

A novel geranylgeranyl reductase from the methanogenic archaeon Methanosarcina acetivorans displays unique regiospecificity Reviewed

Takuya Ogawa, Keisuke Isobe, Takeshi Mori, Susumu Asakawa, Tohru Yoshimura, Hisashi Hemmi

FEBS J Vol. 281 page： 3165 - 3176 2014.7

Abundance and composition of ammonia oxidizers in response to degradation of root cap cells of rice in soil microcosms Reviewed International coauthorship

Yong Li, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Makoto Kimura

J. Soils Sediments Vol. 14 page： 1587 - 1598 2014.5

Quantitative analysis of coenzyme F430 in environmental samples: a new diagnostic tool for methanogenesis and anaerobic methane oxidation Reviewed International coauthorship Open Access

Masanori Kaneko, Yoshinori Takano, Yoshito Chikaraishi, Nanako O. Ogawa, Susumu Asakawa, Takeshi Watanabe, Seigo Shima, Martin Krüger, Makoto Matsushita, Hiroyuki Kimura, Naohiko Ohkouchi

Anal. Chem. Vol. 86 page： 3633 - 3638 2014.4

A rice gene for microbial symbiosis, Oryza sativa CcaMK, reduces CH4 flux in a paddy field with low nitrogen input Reviewed International coauthorship Open Access

Zhihua Bao, Aya Watanabe, Kazuhiro Sasaki, Takashi Okubo, Takeshi Tokida, Dongyan Liu, Seishi Ikeda, Haruko Imaizumi-Anraku, Susumu Asakawa, Tadashi Sato, Hisayuki Mitsui, Kiwamu Minamisawa

Appl. Environ. Microbiol. Vol. 80 page： 1995 - 2003 2014.3

Low nitrogen fertilization adapts rice root microbiome to low nutrient Environment by changing biogeochemical functions Reviewed International coauthorship Open Access

Seishi Ikeda, Kazuhiro Sasaki, Takashi Okubo, Akifumu Yamashita, Kimihiro Terasawa, Zhihua Bao, Dongyan Liu, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Shima Eda, Hisayuki Mitsui, Tadashi Sato, Kiwamu Minamisawa

Microbes Environ. Vol. 29 page： 50 - 59 2014.3

Methane production potential and methanogenic archaeal community structure in tropical irrigated Indian paddy soils Reviewed International coauthorship

Suresh Kumar Dubey, Alpana Singh, Takeshi Watanabe, Susumu Asakawa, Ankit Singla, Hironori Arai, Kazuyuki Inubushi

Biol. Fertil. Soils Vol. 50 page： 369 - 379 2014.2

Analysis of [FeFe]-hydrogenase genes for the elucidation of a hydrogen-producing bacterial community in paddy field soil Reviewed Open Access

Ryuko Baba, Makoto Kimura, Susumu Asakawa, Takeshi Watanabe

FEMS Microbiol. Lett. Vol. 350 page： 249 - 256 2014.1

水田からのメタン発生とメタン生成古細菌 Invited

浅川　晋，渡邉健史

遺伝 Vol. 67 ( 5 ) page： 579 - 585 2013.9

Growth of hydrogenotrophic and acetoclastic methanogens on substrate from rice plant callus cells in anaerobic soil: an estimation to the role of slough-off root cap cells to their growth Reviewed International coauthorship

Yong Li, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Sci Plant Nutr Vol. 59 ( 4 ) page： 548 - 558 2013.8

Identification of the major capsid gene (g23) of T4-type bacteriophages that assimilate substrates from root cap cells under aerobic and anaerobic soil conditions using a DNA-SIP approach Reviewed International coauthorship

Yong Li, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 63 page： 97 - 105 2013.8

Bacterial consortia in iron-deposited colonies formed on paddy soil surface under microaerobic conditions Reviewed International coauthorship

Takeshi Watanabe, Hiroaki Sumida, Nhut Minh Do, Katsuya Yano, Susumu Asakawa, Makoto Kimura

Soil Sci Plant Nutr Vol. 59 ( 3 ) page： 337 - 346 2013.6

Comparison of the frequency of visibly infected bacterial cells between the soil and the floodwater in two Japanese rice fields Reviewed

Ryu Takahashi, Norikuni Saka, Hiroki Honjo, Susumu Asakawa, Makoto Kimura

Soil Sci Plant Nutr Vol. 59 ( 3 ) page： 331 - 336 2013.6

Changes in community structure of methanogenic archaea brought about by water-saving practice in paddy field soil Reviewed International coauthorship

Takeshi Watanabe, Yasukazu Hosen, Ruth Agbisit, Lizzida Llorca, Nobuko Katayanagi, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 58 page： 235 - 243 2013.3

A novel method for RNA extraction from Andosols using casein and its application to amoA gene expression study in soil Reviewed International coauthorship

Yong Wang, Kazunari Nagaoka, Masahito Hayatsu, Yoriko Sakai, Kanako Tago, Susumu Asakawa, Takeshi Fujii

Appl. Microbiol. Biotechnol. Vol. 96 ( 3 ) page： 793 - 802 2012.11

Effect of winter-flooding on methanogenic archaeal community structure in paddy field under organic farming Reviewed International coauthorship Open Access

Dongyan Liu, Chika Suekuni, Kazunori Akita, Toyoaki Ito, Masanori Saito, Takeshi Watanabe, Makoto Kimura, Susumu Asakawa

Soil Sci Plant Nutr Vol. 58 ( 5 ) page： 553 - 561 2012.10

Diversity of cultivable methane-oxidizing bacteria in microsites of a rice paddy field: investigation by cultivation method and fluorescence in situ hybridization (FISH). Reviewed International coauthorship Open Access

Dayeri Dianou, Chihoko Ueno, Takuya Ogiso, Makoto Kimura, Susumu Asakawa

Microbes Environ. Vol. 27 page： 278 - 287 2012.9

Methylomonas koyamae sp. nov., a type I methane-oxidizing bacterium from floodwater of a rice paddy field. Reviewed International coauthorship

Takuya Ogiso, Chihoko Ueno, Dayeri Dianou, Tran Van Huy, Arata Katayama, Makoto Kimura, Susumu Asakawa

Int. J. Syst. Evol. Microbiol. Vol. 62 page： 1832 - 1837 2012.8

Growth of methanogens in an oxic soil microcosm: Elucidation by a DNA-SIP experiment using 13C-labeled dried rice callus. Reviewed International coauthorship

Chol Gyu Lee, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Makoto Kimura

Appl. Soil Ecol. Vol. 58 page： 37 - 44 2012.7

Bacterial communities that decompose root cap cells in an anaerobic soil: estimation by DNA-SIP method using rice plant callus cells. Reviewed Open Access

Yong Li, Takeshi Watanabe, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 58 page： 297-308 2012.6

Heterotrophic growth of cyanobacteria and phage-mediated microbial loop in soil: Examination by stable isotope probing (SIP) method. Reviewed International coauthorship Open Access

Chol Gyu Lee, Takeshi Watanabe, Yuichi Fujita, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 58 page： 161 - 168 2012.4

Phylogenetic diversity of microturbellarians in Japanese rice paddy fields, with special attention to the genus Stenostomum. Reviewed Open Access

Masatsugu Yamazaki, Susumu Asakawa, Jun Murase, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 58 page： 11 - 23 2012.2

Incorporation of plant residue-derived carbon into the microeukaryotic community in a rice field soil revealed by DNA stable-isotope probing. Reviewed International coauthorship Open Access

Jun Murase, Manami Shibata, Chol Gyu Lee, Takeshi Watanabe, Susumu Asakawa, Makoto Kimura

FEMS Microbiol. Ecol. Vol. 79 page： 371 - 379 2012.2

Carbon flow into ammonia-oxidizing bacteria and archaea during decomposition of 13C-labeled plant residues in soil. Reviewed International coauthorship

Takeshi Watanabe, Chol Gyu Lee, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 57 page： 775 - 785 2011.12

部門別進歩総説，第３部門　土壌生物，土壌生物. Reviewed Open Access

村瀬　潤・鮫島玲子・小川直人・浅川晋

日本土壌肥料学雑誌 Vol. 82 ( 6 ) page： 486 - 494 2011.12

酸化還元研究の新展開 -土壌の酸化還元がもたらす現象を追う- 2. 水田の湛水・落水に伴う土壌微生物群集の変化 -分子生物学的手法による解析- Invited Reviewed

浅川晋

日本土壌肥料学雑誌 Vol. 82 ( 5 ) page： 428 - 433 2011.10

Identification of microbial communities that assimilate substrate from root cap cells in an aerobic soil using a DNA-SIP approach. Reviewed International coauthorship

Yong Li, Chol Gyu Lee, Takeshi Watanabe, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 43 ( 9 ) page： 1928 - 1935 2011.9

Assimilation of glucose-derived carbon into methanogenic archaea in soil under unflooded condition. Reviewed International coauthorship

Takeshi Watanabe, Guanghua Wang, Jun Murase, Susumu Asakawa, Makoto Kimura

Appl. Soil Ecol. Vol. 48 ( 2 ) page： 201 - 209 2011.6

Spatial and temporal changes of cyanophage communities in paddy field soils as revealed by the capsid assembly protein gene g20 Reviewed International coauthorship

Guanghua Wang, Susumu Asakawa, Makoto Kimura

FEMS Microbiol. Ecol. Vol. 76 ( 2 ) page： 352 - 359 2011.5

Bacterial populations assimilating carbon from 13C-labeled plant residue in soil: Analysis by a DNA-SIP approach. Reviewed International coauthorship

Chol Gyu Lee, Takeshi Watanabe, Yutaka Sato, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 43 ( 4 ) page： 814 - 822 2011.4

分子生態学的な微生物解析手法の土壌肥料研究への活用 Reviewed Open Access

浅川晋、長岡一成、関口博之、浦嶋泰文、須賀有子、西澤智康、太田寛之、山崎真嗣、妹尾啓史

日本土壌肥料学雑誌 Vol. 82 ( 2 ) page： 160 - 165 2011.4

High frequency of phage-infected bacterial cells in a rice field soil in Japan. Reviewed

Ryu Takahashi, Saman Bowatte, Katsutoshi Taki, Yoshinori Ohashi, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 57 ( 1 ) page： 35 - 39 2011.1

Low diversity of T4-type bacteriophages in applied rice straw, plant residues and rice roots in Japanese rice soils: Estimation from major capsid gene (g23) composition. Reviewed International coauthorship

Shun Fujihara, Jun Murase, Cho Cho Tun, Tomoya Matsuyama, Makoto Ikenaga, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 56 ( 6 ) page： 800 - 812 2010.12

Methanogenic archaeal communities in paddy field soils in north-east China as evaluated by PCR-DGGE, sequencing and real-time PCR analyses. Reviewed International coauthorship

Guanghua Wang, Takeshi Watanabe, Jian Jin, Xiaobing Liu, Makoto Kimura, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 56 ( 6 ) page： 831 - 838 2010.12

Vertical changes in bacterial and archaeal communities with soil depth in Japanese paddy fields. Reviewed International coauthorship

Takeshi Watanabe, Guanghua Wang, Katsutoshi Taki, Yoshinori Ohashi, Makoto Kimura, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 56 ( 5 ) page： 705 - 715 2010.10

Diversity of methanogenic archaeal communities in Japanese paddy field ecosystem, estimated by denaturing gradient gel electrophoresis Reviewed

Takeshi Watanabe, Makoto Kimura, Susumu Asakawa

Biol. Fertil. Soils Vol. 46 page： 343 - 353 2010.4

Antigenic group II chaperonin in Methanobrevibacter oralis may cross-react with human chaperonin CCT Reviewed

Kokoro Yamabe, Hiroshi Maeda, Susumu Kokeguchi, Yoshihiko Soga, Michio Meguro, Koji Naruishi, Susumu Asakawa, Shogo Takashiba

Molecular Oral Microbiology Vol. 25 ( 2 ) page： 112 - 122 2010.4

Unique viral capsid assembly protein gene (g20) of cyanophages in the floodwater of a Japanese paddy field Reviewed International coauthorship

Guanghua Wang, Jun Murase, Susumu Asakawa, Makoto Kimura

Biol. Fertil. Soils Vol. 46 page： 93 - 102 2010.2

Novel cyanophage photosynthetic gene psbA in the floodwater of a Japanese rice field Reviewed International coauthorship Open Access

Guanghua Wang, Jun Murase, Susumu Asakawa, Makoto Kimura

FEMS Microbiol. Ecol. Vol. 70 page： 79 - 86 2009.10

Changes in T4-type bacteriophage communities during the composting process of rice straw: Estimation from the major capsid gene (g23) sequences Reviewed International coauthorship

Vita Ratri Cahyani, Jun Murase, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 55 page： 468 - 477 2009.8

微生物群集を鳥瞰する Invited Reviewed Open Access

浅川晋

化学と生物 Vol. 47 ( 7 ) page： 451 - 453 2009.7

Changes in major capsid genes (g23) of T4-type bacteriophages with soil depth in two Japanese rice fields Reviewed International coauthorship

Guanghua Wang, Jun Murase, Katsutoshi Taki, Yoshinori Ohashi, Nanako Yoshikawa, Susumu Asakawa, Makoto Kimura

Biol. Fertil. Soils Vol. 45 page： 521 - 529 2009.5

原生生物や線虫から見た土壌生態系の解明と活用 Reviewed Open Access

橋本知義・浅川晋・村瀬潤・島野智之・高橋忠夫・岡田浩明・佐藤恵利華・豊田剛己

日本土壌肥料学雑誌 Vol. 80 ( 2 ) page： 201 - 206 2009.4

T4-type bacteriophage communities estimated from the major capsid genes (g23) in manganese nodules in Japanese paddy fields Reviewed International coauthorship Open Access

Vita Ratri Cahyani, Jun Murase, Eiji Ishibashi, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 55 page： 264 - 270 2009.4

Phylogenetic positions of Mn2+-oxidizing bacteria and fungi isolated from Mn nodules in rice field subsoils Reviewed International coauthorship

Vita Ratri Cahyani, Jun Murase, Eiji Ishibashi, Susumu Asakawa, Makoto Kimura

Biol. Fertil. Soils Vol. 45 page： 337 - 346 2009.3

Comparison of g23 gene sequence diversity between Novosphingobium and Sphingomonas phages and phage communities in the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 41 page： 179 - 185 2009.2

*Distinct members of a stable methanogenic archaeal community transcribe mcrA genes under flooded and drained conditions in Japanese paddy field soil Reviewed

Takeshi Watanabe, Makoto Kimura, Susumu Asakawa

Soil Biol. Biochem. Vol. 41 page： 276 - 285 2009.2

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

The composition and succession of methanogenic archaea in a Japanese paddy field were investigated
during an annual cycle by analyses of methyl-coenzyme M reductase a subunit (mcrA) genes and their
mRNA transcripts, which encode a key enzyme for methanogenesis. The paddy field was managed with
a double-cropping cultivation, i.e. rice grown in summer under a flooded condition and wheat cultivated
in winter under a drained condition. The mcrA genes and their transcripts were amplified from genomic
DNA and total RNA extracted from soil samples, respectively. Numbers of the mcrA genes estimated by
the most probable number-PCR showed little variation among the samples, whereas those of the transcripts
and the transcripts/mcrA gene ratios increased in the late period of the rice cultivation under
flooded condition. In addition, band patterns of denaturing gradient gel electrophoresis of the mcrA gene
PCR products were similar among the samples, while those from the transcripts were different between
the samples under flooded and drained conditions. Methanogenic activities of the paddy soils were
higher under flooded conditions than drained conditions. Clones belonging to Methanomicrobiales,
Methanosarcinales, Methanocellales (Rice cluster I), mrtA cluster (isoenzyme genes) and Methanobacteriaceae
were detected in the soils by the clone library analysis. However, the relative proportions
in the libraries from the transcripts were completely different, i.e. transcripts derived from members of
unidentified Methanosarcinales and Rice cluster I were predominantly detected in the soils under
flooded and drained conditions, respectively. These results suggested that distinct members in a wellestablished
methanogenic archaeal community transcribed mcrA genes and contributed to methane
production corresponding to soil conditions.

DOI： 10.1016/j.soilbio.2008.10.025

Methanogenic archaeal communities developed in paddy fields in the Kojima Bay polder, estimated by denaturing gradient gel electrophoresis, real-time PCR and sequencing analyses Reviewed International coauthorship

Takeshi Watanabe, Vita Ratri Cahyani, Jun Murase, Eiji Ishibashi, Makoto Kimura, Susumu Asakawa

Soil Sci. Plant Nutr. Vol. 55 page： 73 - 79 2009.2

Morphology, host range and phylogenetic diversity of Sphingomonas phages in the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Takashi Tsuge, Susumu Asakawa, Makoto Kimura

Soil Sci. Plant Nutr. Vol. 55 page： 53 - 64 2009.2

Survey of major capsid genes (g23) of T4-type bacteriophagesin rice fields in Northeast China Reviewed International coauthorship

Guanghua Wang, Jian Jin, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 41 page： 423 - 427 2009.2

Frequency of phage-infected bacterial cells in the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 41 page： 186 - 191 2009.2

Survey of major capsid genes (g23) of T4-type bacteriophages in Japanese paddy field soils Reviewed International coauthorship

Guanghua Wang, Motoki Hayashi, Masato Saito, Kazunari Tsuchiya , Susumu Asakawa, Makoto Kimura

Soil Biol. Biochem. Vol. 41 page： 13 - 20 2009.1

部門別進歩総説，第３部門　土壌生物，土壌生物 Reviewed

浅川晋・鮫島玲子・齋藤明広・橋本知義

日本土壌肥料学雑誌 Vol. 76 ( 6(部門別進歩総説特集号) ) page： 557 - 560 2008.12

*Identification of the gene for disaggregatase from Methanosarcina mazei Reviewed

Naoki Osumi, Yoshihiro Kakehashi, Shiho Matsumoto, Kazunari Nagaoka, Junich Sakai, Kiyotaka Miyashita, Makoto Kimura, Susumu Asakawa

Archaea Vol. 2 page： 185 - 191 2008.12

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

The gene sequences encoding disaggregatase
(Dag), the enzyme responsible for dispersion of cell aggregates
of Methanosarcina mazei to single cells, were determined
for three strains of M. mazei (S-6T, LYC and TMA). The
dag genes of the three strains were 3234 bp in length and had almost
the same sequences with 97% amino acid sequence identities.
Dagwas predicted to comprise 1077 amino acid residues
and to have a molecular mass of 120 kDa containing three repeats
of the DNRLRE domain in the C terminus, which is specific
to the genus Methanosarcina and may be responsible for
structural organization and cell wall function. Recombinant
Dag was overexpressed in Escherichia coli and preparations
of the expressed protein exhibited enzymatic activity. The
RT-PCR analysis showed that dagwas transcribed tomRNAin
M. mazei LYC and indicated that the gene was expressed in
vivo. This is the first time the gene involved in the morphological
change of Methanosarcina spp. from aggregate to single
cells has been identified.

DOI： 10.1155/2008/949458

Bacterial communities in iron mottles in the plow pan layer of a Japanese rice field: estimation using PCR-DGGE and sequencing analyses Reviewed International coauthorship Open Access

Vita Ratri Cahyani, Jun Murase, Eiji Ishibasi, Susumu Asakawa, and Makoto Kimura

Soil Sci.Plant Nutr. Vol. 54 page： 711 - 717 2008.10

Distribution of Archaea in Japanese patients with periodontitis and humoral immune response to the components Reviewed Open Access

Kokoro Yamabe, Hiroshi Maeda, Susumu Kokeguchi, Ichiro Tanimoto, Norihiro Sonoi, Susumu Asakawa, Shogo Takashiba

FEMS Microbiol. Lett. Vol. 287 page： 69 - 75 2008.10

水田における微生物の機能と群集構造 Invited

浅川晋

バイオサイエンスとインダストリー Vol. 66 ( 9 ) page： 482 - 487 2008.9

白鳥神社と水田農業（追補）ー愛知県旧作手村（現新城市作手地区）の白鳥神社と水田稲作の関わりについてー

浅川晋，木村眞人，小野信一

農業と科学 Vol. 598 page： 11 - 14 2008.6

*Comparison of bacterial community structures at main habitats in paddy field ecosystem based on DGGE analysis Reviewed

Susumu Asakawa and Makoto Kimura

Soil Biol. Biochem. Vol. 40 page： 1322 - 1329 2008.6

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

Bacterial communities at different habitats in a Japanese paddy field ecosystem were compared to understand the bacterial world in the
ecosystem as a whole by analyzing data of the denaturing gradient gel electrophoresis (DGGE) band patterns and the sequenced DGGE
bands. The habitats were floodwater, percolating water, microcrustacean inhabiting in floodwater, plow layer soil, rice roots, rice straw
and rice straw compost incorporated in soil, rice straw placed on the soil surface, plant residues in paddy fields, and rice straw under
composting process. Phylotype (band) richness, diversity, evenness, and stability of the bacterial communities at the respective habitats
were evaluated based on the DGGE profile data. Phylotype richness was greater near plant residues, rice straw buried in soil and rice
straw placed on soil surface, while it was smaller at microcrustacean and rice straw compost buried in soil. The samples from plow layer
soil and rice straw compost buried in soil showed considerably higher index values for diversity, evenness, and stability, while those from
rice straw placed on soil surface and microcrustacean had lower values of the indices than other habitats. Sequences of totally 250 DGGE
bands were assigned to phyla or classes. Distribution of bacterial members to phylogenetic taxa was different among the respective
habitats. Inhabitants in plow layer soil were most widely distributed among the groups (nine phyla: Proteobacteria, Chloroflexi,
Chlorobi, Verrucomicrobia, Acidobacteria, Nitrospira, candidate division OP10, Cyanobacteria, and Actinobacteria), while those in
floodwater and microcrustacean were restricted to only three phyla (Proteobacteria, Bacteroidetes, and Actinobacteria). Proteobacteria
and Bacteroidetes were found at all the habitats and the habitats except for plow layer soil, respectively, whereas abundant members
belonged to Chloroflexi and Actinobacteria in plow layer soil. ``Comprehensive mapping'' of DGGE f

DOI： 10.1016/j.soilbio.2007.09.024

Novel capsid genes (g23) of T4-type bacteriophages in a Japanese paddy field Reviewed

Takeshi Fujii, Natsuko Nakayama, Mizuhiko Nishida, Hiroyuki Sekiya, Naoto Kato, Susumu Asakawa, and Makoto Kimura

Soil Biol. Biochem. Vol. 40 page： 1049 - 1059 2008.5

Cyanobacterial communities of rice straw left on the soil surface of a paddy field Reviewed

Naoko Asari, Rie Ishihara, Yasunori Nakajima, Makoto Kimura, and Susumu Asakawa

Biol. Fertil. Soils Vol. 44 page： 605 - 612 2008.4

Eukaryotic communities associated with the decomposition of rice straw compost in a Japanese rice paddy field estimated by DGGE analysis Reviewed

Masashi Hatamoto, Takanori Tanahashi, Jun Murase, Kazuo Matsuya, Motoki Hayashi, Makoto Kimura, and Susumu Asakawa

Biol. Fertil. Soils Vol. 44 page： 527 - 532 2008.2

Viral ecology in soil: past, present, and future perspectives Reviewed International coauthorship Open Access

Makoto Kimura, Zhongjun Jia, Natsuko Nakayama, and Susumu Asakawa

Soil Sci.Plant Nutr Vol. 54 page： 1 - 32 2008.1

Morphological analysis of viral communities in the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Mami Okumura, Katsuhiro Inoue, Susumu Asakawa, and Makoto Kimura

Soil Biol. Biochem Vol. 39 page： 3187 - 3190 2007.12

Molecular characterization of methane-oxidizing bacteria associated with rice straw decomposition in a rice field Reviewed International coauthorship

Zhongjun Jia, Atsuo Sugano, Naoko Asari, Cho Cho Tun, Rie Ishihara, Susumu Asakawa, and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 729 - 739 2007.12

Dynamics of methanogenic archaeal communities based on rRNA analysis and their relation to methanogenic activity in Japanese paddy field soils Reviewed

Takeshi Watanabe, Makoto Kimura, and Susumu Asakawa

Soil Biol. Biochem Vol. 39 page： 2877-2887 2007.11

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

We investigated the relationships between dynamics of methanogenic archaeal communities and methanogenic activities in Japanese paddy ﬁeld soils by reverse transcription-PCR-denaturing gradient gel electrophoresis (RT-PCR-DGGE)and real-time PCR targeting 16S rRNA gene (16S rDNA)and 16S rRNA.The investigated paddy ﬁelds were managed on a double-cropping system,where rice was cultivated under ﬂooded conditions in summer and wheat was cropped after drainage in winter under drained conditions. Methanogenic archaeal 16S rRNAs were retrieved from all collected soil samples even under drained conditions by RT-PCR.DGGE band patterns from methanogenic archaeal 16S rRNAs were stable throughout the year and were similar to the patterns from their 16S rDNAs.The ratio of 16S rRNAs per one 16S rDNA fragment ﬂuctuated between 9.4 and 1.2 103 and increased during rice cultivations although contrary results were also obtained in some investigated plots.Methanogenic activities under ﬂooded conditions were higher than those under drained conditions. These results suggested that activities of methanogenic archaeal communities ﬂuctuated in a year depending on soil conditions.

DOI： 10.1016/j.soilbio.2007.05.030

Molecular analysis of biodegradable plastics decomposers in two Japanese soils Reviewed Open Access

Masahiro Kamiya, Susumu Asakawa, and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 568 - 574 2007.10

Abundance of bacteriophages of common heterotrophic bacteria in the floodwater of a Japanese paddy field Reviewed Open Access

Natsuko Nakayama, Mami Okumura, Katsuhiro Inoue, Susumu Asakawa and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 595 - 605 2007.10

Succession and phylogenetic profile of eukaryotic communities in rice straw incorporated into a rice field: estimation by PCR-DGGE and sequence analyses Reviewed International coauthorship Open Access

Atsuo Sugano, Hidetaka Tsuchimoto, Tun Cho Cho, Susumu Asakawa, and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 585 - 594 2007.10

Bacterial communities in manganese nodules in rice field subsoils: estimation using PCR-DGGE and sequencing analyses Reviewed International coauthorship Open Access

Vita Ratri Cahyani, Jun Murase, Eiji Ishibasi, Susumu Asakawa, and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 575 - 584 2007.10

Molecular identification of methane-oxidizing bacteria in rice field soils Reviewed International coauthorship

Zhongjun Jia, Hiroyasu Kikuchi, Takeshi Watanabe, Susumu Asakawa, and Makoto Kimura

Biol. Fertil. Soils Vol. 44 ( 1 ) page： 121 - 130 2007.10

Seasonal variations in the abundance of virus-like particles and bacteria in the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Mami Okumura, Katsuhiro Inoue, Susumu Asakawa and Makoto Kimura

Soil Sci.Plant Nutr Vol. 53 page： 420 - 429 2007.8

Molecular analyses reveal stability of bacterial communities in bulk soil of a Japanese paddy field: estimation by denaturing gradient gel electrophoresis of 16S rRNA genes amplified from DNA, accompanied with RNA Reviewed International coauthorship Open Access

Hiroyasu Kikuchi, Takeshi Watanabe, Zhongjun Jia, Makoto Kimura, and Susumu Asakawa

Soil Sci.Plant Nutr Vol. 53 page： 448 - 458 2007.8

Molecular characterization of T4-type bacteriophages in a rice field Reviewed International coauthorship

Zhongjun Jia, Rie Ishihara, Yasunori Nakajima, Susumu Asakawa and Makoto Kimura

Environ. Microbiol. Vol. 9 page： 1091 - 1096 2007.4

Effect of elevated atmospheric CO2 concentration on ammonia oxidizing bacteria communities inhabiting in rice roots Reviewed International coauthorship

Saman Bowatte, Susumu Asakawa, Masumi Okada, Kazuhiko Kobayashi and Makoto Kimura

Soil Sci. Plant Nutr. Vol. 53 page： 32 - 39 2007.2

Succession and phylogenetic composition of eubacterial communities in rice straw during decomposition on the surface of paddy field soil Reviewed Open Access

Naoko Asari, Rie Ishihara, Yasunori Nakajima, Makoto Kimura and Susumu Asakawa

Soil Sci. Plant Nutr Vol. 53 page： 53 - 65 2007.2

Bacterial community in plant residues in a Japanese paddy field estimated by RFLP and DGGE analyses. Reviewed

Tomoya Matsuyama, Yasunori Nakajima, Kazuo Matsuya, Makoto Ikenaga, Susumu Asakawa and Makoto Kimura

Soil Biol. Biochem. Vol. 39 page： 463 - 472 2007.2

水田土壌の機能と微生物群集構造 Reviewed Open Access

浅川晋

土と微生物 Vol. 60 ( 2 ) page： 79 - 84 2006

Phylogenetic study on a bacterial community in the floodwater of a Japanese paddy field estimated by sequencing 16S rDNA fragments after denaturing gradient gel electrophoresis Reviewed

Taketoshi Shibagaki-Shimizu, Natsuko Nakayama, Yasunori Nakajima, Kazuo Matsuya, Makoto Kimura, and Susumu Asakawa

Biol. Fertil. Soils Vol. 42 ( 4 ) page： 362 - 365 2006

Characterization of ammonia oxidizing bacteria associated with weeds in a Japanese paddy field using amoA gene fragments Reviewed International coauthorship Open Access

Saman Bowatte, Rie Ishihara, Susumu Asakawa and Makato Kimura

Soil Sci. Plant Nutr. Vol. 52 ( 5 ) page： 593 - 600 2006

Comparison of community structures of microbiota at main habitats in the rice field ecosystems based on phospholipid fatty acid analysis Reviewed

Makoto Kimura and Susumu Asakawa

Biol. Fertil. Soils Vol. 43 ( 1 ) page： 20 - 29 2006

Molecular analysis of the ammonia oxidizing bacterial community in the surface soil layer of a Japanese paddy field Reviewed International coauthorship

Saman Bowatte, Susumu Asakawa and Makoto Kimura

Soil Sci. Plant Nutr. Vol. 52 ( 4 ) page： 427 - 431 2006

Phylogenetic distribution of bacteria isolated from the floodwater of a Japanese paddy field Reviewed

Natsuko Nakayama, Akiko Okabe, Koki Toyota, Makoto Kimura, and Susumu Asakawa

Soil Sci.Plant Nutr. Vol. 52 ( 3 ) page： 305 - 312 2006

Community structure of methanogenic archaea in paddy field soil under double cropping (rice-wheat) Reviewed

Takeshi Watanabe, Makoto Kimura, and Susumu Asakawa

Soil Biol. Biochem. Vol. 38 page： 1264 - 1274 2006

Succession and phylogenetic profile of eubacterial communities in rice straw incorporated into a rice field: estimation by PCR-DGGE analysis. Reviewed International coauthorship Open Access

SUGANO A, TSUCHIMOTO H, TUN CC, ASAKAWA S, KIMURA M:

Soil Sci Plant Nutr Vol. 51 page： 51 - 60 2005

土壌中の遺伝子・遺伝子情報・・・何ができるのか，何が分かるのか　６．土壌微生物の群集解析（その２）DGGE，水田土壌への適用 Reviewed Open Access

浅川晋

日本土壌肥料学雑誌 Vol. 76 ( 6 ) page： 913 - 916 2005

世界の土壌と微生物 Reviewed Open Access

木村眞人・浅川晋

ペドロジスト Vol. 49 ( 2 ) page： 90 - 98 2005

Succession of methanogenic archaea in rice straw incorporated into a Japanese rice field: estimation by PCR-DGGE and sequence analyses Reviewed International coauthorship

Atsuo Sugano, Hidetaka Tsuchimoto, Cho Cho Tun, Makoto Kimura, and Susumu Asakawa

Archaea Vol. 1 ( 6 ) page： 391 - 397 2005

第３部門　土壌生物，その他の土壌微生物 Invited

浅川　晋

日本土壌肥料学雑誌 Vol. 76 ( 部門別進歩総説特集 ) page： 719 2005

第３部門　土壌生物，水田微生物 Invited

浅川　晋

日本土壌肥料学雑誌 Vol. 76 ( 部門別進歩総説特集 ) page： 717 2005

Bacterial Communities responsible for the decomposition of rice straw compost in a Japanese rice paddy field estimated by DGGE analysis of amplified 16S rDNA and 16S rRNA fragments. Reviewed

TANAHASHI T, MURASE J, MATSUYA K, HAYASHI M, KIMURA M, ASAKAWA S

Soil Sci Plant Nutr Vol. 51 page： 351 - 360 2005

Effect of free-air CO2 enrichment (FACE) on methanogenic archaeal communities inhabiting rice roots in a Japanese rice field. Reviewed International coauthorship Open Access

HASHIMOTO-YASUDA T, IKENAGA M, ASAKAWA S, KIM H-Y, OKADA M, KOBAYASHI K, KIMURA M

Soil Sci Plant Nutr Vol. 51 page： 91 - 100 2005

Succession and phylogenetic profile of methanogenic archaeal communities during the composting process of rice straw estimated by PCR-DGGE analysis. Reviewed International coauthorship Open Access

CAHYANI VR, MATSUYA K, ASAKAWA S, KIMURA M

Soil Sci Plant Nutr Vol. 50 page： 555 - 563 2004

Analysis of communities of ammonia oxidizers, methanotrophs, and methanogens associated with microcrustaceans in the floodwater of a rice field microcosm. Reviewed International coauthorship

NISWATI A, MURASE J, ASAKAWA S, KIMURA M

Soil Sci Plant Nutr Vol. 50 page： 447 - 455 2004

DGGE method for analyzing 16S rDNA of methanogenic archaeal community in paddy field soil. Reviewed

WATANABE T, ASAKAWA S, NAKAMURA A, NAGAOKA K, KIMURA M

FEMS Microbiol Lett Vol. 232 page： 153 - 163 2004

Community structure of Eukaryotes in rice roots estimated by PCR-DGGE pattern and sequence analyses. Reviewed

IKENAGA M, ASAKAWA S, MURAOKA Y, KIMURA M

Soil Sci Plant Nutr Vol. 50 page： 583 - 589 2004

Microbial communities responsible for the decomposition of rice straw compost in a Japanese rice paddy field determined by phospholipid fatty acid (PLFA) analysis. Reviewed

TANAHASHI T, MURASE J, MATSUYA K, ASAKAWA S, KIMURA M

Soil Sci Plant Nutr Vol. 50 page： 1229 - 1236 2004

Methanogenic archaeal communities in rice roots grown in flooded soil pots: estimation by PCR-DGGE and sequence analyses. Reviewed

IKENAGA M, ASAKAWA S, MURAOKA Y, KIMURA M

Soil Sci Plant Nutr Vol. 50 page： 701 - 711 2004

Succession and phylogenetic profile of eukaryotic communities in the composting process of rice straw estimated by PCR-DGGE analysis. Reviewed International coauthorship

CAHYANI VR, MATSUYA K, ASAKAWA S, KIMURA M

Biol Fertil Soils Vol. 40 page： 334 - 344 2004

Phylogenetic study on CTO primer-amplified ammnonia-oxidizing bacteria and β-Proteobacteria associtated with rice roots grown in a flooded paddy soil Reviewed Open Access

Ikenaga M, Asakawa S, Muraoka Y, Kimura M

Soil Sci Plant Nutr Vol. 49 page： 719 - 727 2003.10

Methanoculleus bourgensis, Methanoculleus olentangyi and Methanoculleus oldenburgensis are subjective synonyms Reviewed

Asakawa S, Nagaoka K

Int J Syst Evol Microbiol Vol. 53 page： 1551 - 1552 2003.9

Microbial community responsible for the decomposition of rice straw in a paddy field: estimation by phospholipid fatty acid analysis Reviewed International coauthorship

Nakamura A, Tun CC, Asakawa S, Kimura M

Biol Fertil Soils Vol. 38 page： 288 - 295 2003.9

Bacterial communities associated with nodal roots of rice plants along with the growth stages: estimation by PCR-DGGE and sequence analysis Reviewed Open Access

Ikenaga M, Asakawa S, Muraoka Y, Kimura M

Soil Sci Plant Nutr Vol. 49 page： 591 - 602 2003.8

Succession and phylogenetic composition of bacterial communities responsible for the composting process of rice straw estimated by PCR-DGGE analysis International coauthorship

Cahyani VR, Matsuya K, Asakawa S, Kimura M

Soil Sci Plant Nutr Vol. 49 page： 619 - 630 2003.8

Community structure of bacteria and fungi responsible for rice straw decomposition in a paddy field estimated by PCR-RFLP analysis Reviewed International coauthorship

Tun CC, Ikenaga M, Asakawa S, Kimura M

Soil Sci Plant Nutr Vol. 48 page： 805 - 813 2002.12

Succession of microbiota estimated by phopholipid fatty acid analysis and changes in organic constituents during the composting process of rice straw Reviewed International coauthorship

Cahyani VR, Watanabe A, Matsuya K, Asakawa S, Kimura M

Soil Sci Plant Nutr Vol. 48 page： 735 - 743 2002.10

Methanoculleus chikugoensis sp. nov., a novel methanogenic archaeon isolated from paddy field soil in Japan, and DNA-DNA hybridization among Methanoculleus species Reviewed International coauthorship

Dianou D, Miyaki T, Asakawa S, Morii H, Nagaoka K, Oyaizu H, Matsumoto S

Int J Syst Evol Microbiol Vol. 51 page： 1663 - 1669 2001.9

メタン生成菌の活性制御技術の開発

浅川晋

農林水産生態系を利用した地球環境変動要因の制御技術の開発,研究成果339 Vol. 339 page： 131 - 134 1999.3

メタン生成古細菌の特徴と水田土壌における生態 Invited Open Access

浅川晋

土と微生物 Vol. 52 page： 33 - 39 1998.1

Tetramethylammonium:coenzyme M methyltransferase system from Methanococcoides sp. Reviewed International coauthorship

Asakawa S, Sauer K, Liesack W, Thauer R

Arch Microbiol Vol. 170 page： 220 - 226 1998.1

Communities of methanogenic bacteria in paddy field soils with long-term application of organic matter Reviewed

Asakawa S, Akagawa-Matsushita M, Koga Y, Hayano K

Soil Biol. Biochem. Vol. 30 page： 299 - 303 1998.1

水田土壌のメタン生成細菌に関する研究 Invited Open Access

浅川晋

日本土壌肥料学雑誌 Vol. 68 page： 241 - 242 1997.1

最確値(MPN)法による水田土壌のメタン生成細菌の計数法の実際 Invited Reviewed Open Access

浅川晋・古賀洋介・早野恒一

土と微生物 Vol. 46 page： 31 - 36 1996.1

Populations of methanogenic bacteria in paddy field soil under double cropping conditions (rice-wheat) Reviewed

Asakawa S, Hayano K

Biol. Fertil. Soils Vol. 20 page： 113 - 117 1995.1

Activity of protease extracted from rice-rhizosphere soils under double cropping of rice and wheat

Hayano K, Watanabe K, Asakawa S

Soil Sci. Plant Nutr. Vol. 41 page： 597 - 603 1995.1

西南暖地の堆肥及び化学肥料長期連用水田の土壌微生物とその活性-水稲と小麦の根圏及び非根圏の比較- Reviewed Open Access

早野恒一・渡邊克二・浅川晋

九州農業試験場報告 Vol. 28 page： 139 - 155 1995.1

Characterization of Methanosarcina mazeii TMA isolated from a paddy field soil Reviewed

Asakawa S, Akagawa-Matsushita M, Morii H, Koga Y, Hayano K

Curr. Microbiol. Vol. 31 page： 34 - 38 1995.1

Communities of methanogenic bacteria in paddy field soils with long-term application of organic matter Invited

Vol. 32 page： 219-220 1994

Characterization of Methanobrevibacter arboriphilus SA isolated from a paddy field soil and DNA-DNA hybridization among M. arboriphilus strains. Reviewed

Asakawa S, Morii H, Akagawa-Matsushita M, Koga Y, Hayano K

Int J Syst Bacteriol Vol. 43 page： 683-686 1993

Application of the first-order reaction (FOR) model to nodulation by Bradyrhizobium japonicum in the nodulation-dilution frequency method and estimation of time of initiation of nodulation. Reviewed

Soil Sci Plant Nutr Vol. 39 page： 733 - 736 1993

Denitrifying ability of indigenous strains of Bradyrhizobium japonicum isolated from fields under paddy-upland rotation. Reviewed

Asakawa S

Biol Fertil Soils Vol. 15 page： 196 - 200 1993

田畑輪換圃場における土着ダイズ根粒菌の生残性 Reviewed Open Access

浅川　晋・池田一徹

日本土壌肥料学雑誌 Vol. 61 page： 411 - 412 1990

アゾーラの施用が水稲の収量，窒素吸収量および土壌窒素に及ぼす影響 Reviewed Open Access

浅川　晋・蘭　道生・早野恒一・高林　実

日本土壌肥料学雑誌 Vol. 59 page： 397 - 402 1988

Effect of fertilizer and manure application on microbial numbers, biomass, and enzyme activities in volcanic ash soils. I. Microbial numbers and biomass carbon. Reviewed Open Access

Kanazawa S, Asakawa S, Takai Y

Soil Sci. Plant Nutr. Vol. 34 page： 429 - 439 1988

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Papers - ASAKAWA, Susumu