Experimental evidence of soil bacteria abundance as the primary driver of rhizosphere priming effect

文献类型： 外文期刊

第一作者： Ma, Y. P.

作者： Ma, Y. P.;Zhang, Z. J.;Su, T. Q.;Han, X. G.;Ma, Y. P.;Zhang, Z. J.;Zhang, X. M.;Ma, Y. P.;Busso, C. A.;Johnston, E. R.;Han, X. G.

作者机构：

关键词： Decomposition; Microbial diversity; Rhizosphere priming effect; Soil organic matter; Climate change

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.039； 五年影响因子：0.77 ）

ISSN： 1851-5657

年卷期： 2018 年 87 卷

页码：

收录情况： SCI

摘要： Soil microbial communities are thought to be responsible for the rhizosphere priming effect (RPE). However, because soil microbial communities are comprised of diverse components, very little is known about which component plays the critical role. In this study, soybean and cottonwood were grown at two latitudinal locations with different temperature and light conditions in-situ. We quantified RPE using a natural delta C-13 method, and measured the abundance, richness and composition of bacteria and fungi communities with DNA-based molecular methods. Among all potential variables, including the three aforementioned indexes of bacteria and fungi communities and soil physicochemical and plant indexes, bacterial abundance was found to explain a large proportion of the variation in RPE. Our study identified the biological mechanism underlying this important ecological process.

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