Faculty Profiles - ASAKAWA, Susumu

Papers - ASAKAWA, Susumu

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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

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

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

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

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

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.

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

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Papers - ASAKAWA, Susumu