論文

査読有り
2016年3月

Sulfur Fertilization Changes the Community Structure of Rice Root-, and Soil-Associated Bacteria

MICROBES AND ENVIRONMENTS
  • Sachiko Masuda
  • ,
  • Zhihua Bao
  • ,
  • Takashi Okubo
  • ,
  • Kazuhiro Sasaki
  • ,
  • Seishi Ikeda
  • ,
  • Ryo Shinoda
  • ,
  • Mizue Anda
  • ,
  • Ryuji Kondo
  • ,
  • Yumi Mori
  • ,
  • Kiwamu Minamisawa

31
1
開始ページ
70
終了ページ
75
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1264/jsme2.ME15170
出版者・発行元
JAPANESE SOC MICROBIAL ECOLOGY, DEPT BIORESOURCE SCIENCE

Under paddy field conditions, biological sulfur oxidation occurs in the oxidized surface soil layer and rhizosphere, in which oxygen leaks from the aerenchyma system of rice plants. In the present study, we examined community shifts in sulfur-oxidizing bacteria associated with the oxidized surface soil layer and rice roots under different sulfur fertilization conditions based on the 16S ribosomal RNA (rRNA) gene in order to explore the existence of oligotrophic sulfur-oxidizing bacteria in the paddy rice ecosystem. Rice plants were grown in pots with no fertilization (control) or CaCO3 or CaSO4 fertilization. A principal-coordinates analysis (PCoA) showed that CaSO4 fertilization markedly affected bacterial communities associated with rice roots and soil, whereas no significant differences were observed in plant growth among the fertilizer treatments examined. In rice roots, the relative abundance of Acidobacteria, Alphaproteobacteria, Gammaproteobacteria, and TM7 was significantly higher in CaSO4-fertilized pots than in control pots. Alphaproteobacteria, Bradyrhizobiaceae, and Methylocystaceae members were significantly more abundant in CaSO4-fertilized roots than in control roots. On the other hand, the abundance of Actinobacteria and Proteobacteria was lower in CaSO4-fertilized soil than in control soil. These results indicate that the bacteria associated with rice roots and soil responded to the sulfur amendment, suggesting that more diverse bacteria are involved in sulfur oxidation in the rice paddy ecosystem than previously considered.

Web of Science ® 被引用回数 : 6

リンク情報
DOI
https://doi.org/10.1264/jsme2.ME15170
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26947443
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000373928200011&DestApp=WOS_CPL

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