Effects of Elevated Carbon Dioxide, Elevated Temperature, and Rice Growth Stage on the Community Structure of Rice Root–Associated Bacteria
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- Okubo Takashi
- Graduate School of Life Sciences, Tohoku University
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- Tokida Takeshi
- National Institute for Agro-Environmental Sciences
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- Ikeda Seishi
- Memuro Research Station, National Agricultural Research Center for Hokkaido Region
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- Bao Zhihua
- Graduate School of Life Sciences, Tohoku University
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- Tago Kanako
- National Institute for Agro-Environmental Sciences
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- Hayatsu Masahito
- National Institute for Agro-Environmental Sciences
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- Nakamura Hirofumi
- Taiyo-Keiki Co., Ltd.
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- Sakai Hidemitsu
- National Institute for Agro-Environmental Sciences
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- Usui Yasuhiro
- National Institute for Agro-Environmental Sciences
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- Hayashi Kentaro
- National Institute for Agro-Environmental Sciences
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- Hasegawa Toshihiro
- National Institute for Agro-Environmental Sciences
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- Minamisawa Kiwamu
- Graduate School of Life Sciences, Tohoku University
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抄録
The effects of free-air carbon dioxide enrichment (FACE) and elevated soil and water temperature (warming) on the rice root–associated bacterial community were evaluated by clone library analysis of the 16S ribosomal RNA gene. Roots were sampled at the panicle initiation and ripening stages 41 and 92 days after transplanting (DAT), respectively. The relative abundances of the methanotrophs Methylosinus and Methylocystis were increased by warming and decreased by FACE at 92 DAT, which indicated that microbial methane (CH4) oxidation in rice roots may have been influenced by global warming. The relative abundance of Burkholderia kururiensis was increased by warming at 41 DAT and by FACE or warming at 92 DAT. The abundances of methanotrophs increased during rice growth, which was likely induced by an enhancement in the emission of CH4 from the paddy fields, suggesting that CH4 is one of the predominant factors affecting the structure of the microbial community in rice roots. Marked variations in the community structure were also observed during rice growth in other genera: Bradyrhizobium, Clostridium, and an unknown genus close to Epsilonproteobacteria were abundant at 92 DAT, whereas Achromobacter was abundant at 41 DAT. These results demonstrated that the community structures of rice root-associated bacteria were markedly affected by FACE, temperature, and the rice growth stage.
収録刊行物
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- Microbes and environments
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Microbes and environments 29 (2), 184-190, 2014
日本微生物生態学会 / 日本土壌微生物学会 / Taiwan Society of Microbial Ecology / 植物微生物研究会 / 極限環境微生物学会
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詳細情報
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- CRID
- 1390282679320914304
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- NII論文ID
- 130004057185
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- NII書誌ID
- AA11551577
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- COI
- 1:STN:280:DC%2BC2cjnslSltw%3D%3D
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- ISSN
- 13474405
- 13426311
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- NDL書誌ID
- 025545812
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- PubMed
- 24882221
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可