Preferential uptake of hydrophilic and hydrophobic compounds by bacteria and fungi in upland and paddy soils
文献类型： 外文期刊
作者： Xia, Yinhang 1 ; Chen, Xiangbi 1 ; Zheng, Xiaodong 1 ; Deng, Shaohong 1 ; Hu, Yajun 1 ; Zheng, Shengmeng 1 ; He, Xunya 1 ;
作者机构： 1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Peoples R China
4.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China
5.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, Gottingen, Germany
6.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
关键词： Hydrophilic and hydrophobic compounds; Bacterial and fungal activity; Phospholipid fatty acids; Upland soil; Paddy soil
期刊名称：SOIL BIOLOGY & BIOCHEMISTRY （ 影响因子：7.609； 五年影响因子：8.312 ）
ISSN： 0038-0717
年卷期： 2020 年 148 卷
页码：
收录情况： SCI
摘要： This study aimed to trace the incorporation of C-13-labeled hydrophilic and hydrophobic compounds extracted from maize straw into bacterial and fungal phospholipid fatty acids (PLFAs) in upland and paddy soils. In both soils, the amounts of bacterial C-13-PLFAs recovered from hydrophilic C were 1.2-2.8 times higher than those from hydrophobic C. By contrast, the amounts of fungal C-13-PLFAs recovered from hydrophobic C were 3.8-12.8 times greater than those from hydrophilic C. These results indicate that bacteria have a preference for the uptake of hydrophilic compounds, whereas fungi prefer hydrophobic compounds in both soils. The fungal preference for hydrophobic compounds is stronger than bacterial preference for hydrophilic compounds. This is partly owing to the efficient incorporation of hydrophobic compounds into actinomycete PLFA of 10Me18:0 in upland soil and bacterial PLFA of 18:1 omega 7c in paddy soil. Consequently, the specific uptake of hydrophilic and hydrophobic compounds from plant residues by bacteria and fungi will lead to divergent C pathways in soil.
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