Faculty Profiles - ASAKAWA, Susumu

Papers - ASAKAWA, Susumu

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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

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Papers - ASAKAWA, Susumu