Seasonal Variations of Phospholipid Fatty Acid Composition in the Floodwater of a Japanese Paddy Field under a Long-Term Fertilizer Trial
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概要
- 論文の詳細を見る
The concentration and composition of phospholipid fatty acids (PLFAs) in the floodwater of a Japanese paddy field under a long-term fertilizer trial for more than 70 y [no fertilizers (NoF) plot, chemical fertilizers (CF) plot, and chemical fertilizers and composts (CM) plot] were determined. The amount of PLFAs ranged from 2.8 to 14.1μg L^<-1> for the NoF plot, from 3.2 to 8.6μg L^<-1> for the CF plot, and from 4.4 to 13.0μg L^<-1> for the CM plot, respectively. Dominant PLFAs in the floodwater were 16:1ω7, 16:0, and 18:1ω7 in all the plots. Straight, mono-unsaturated PLFAs accounted for about 40% of the total, suggesting the predominance of Gram-negative bacteria in the floodwater. Principal component analysis and cluster analysis of PLFA composition clearly revealed the variations of microbiota in the floodwater with the kinds of fertilizer and the growth stages of rice plants. An indicator of the environmental stress imposed upon microbiota expressed by the trans vs. cis ratio of 16:1ω7 was consistently low, indicating that the floodwater environment was a low-stress environment upon the microbiota.
- 社団法人日本土壌肥料学会の論文
著者
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KIMURA Makoto
Graduate School of Bioagricultural Sciences, Nagoya University
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TOYOTA KOKI
Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Tec
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Toyota K
Nagoya Univ. Nagoya Jpn
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Toyota K
Graduate School Ofbio-applications And Systems Engineering Tokyo University Of Agriculture And Techn
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Toyota Koki
Laboratory Of Soil Biology And Chemistry School Of Agricultural Sciences Nagoya University
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Toyota Koki
Graduate School Of Bioagricultural Sciences Nagoya University
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Okabe A
Graduate School Of Bioagricultural Sciences Nagoya University:(present Office)graduate School Of Bio
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Okabe Akiko
Graduate School Of Bioagricultural Sciences Nagoya University:(present Office)graduate School Of Bio
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Toyota Koki
Graduate School Of Bio-application And System Engineering Tokyo University Agriculture And Technolog
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Kimura Makoto
Graduate School Of Bioagricultural Sciences Nagoya University
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Kimura Makoto
Graduate School Of Agricultural Sciences Nagoya University
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