Changes in soil microbial community structure and functional diversity in the rhizosphere surrounding mulberry subjected to long-term fertilization
文献类型: 外文期刊
第一作者: Yu, C.
作者: Yu, C.;Hu, X. M.;Deng, W.;Li, Y.;Xiong, C.;Ye, H.;Han, G. M.;Li, X.
作者机构:
关键词: Mulberry;Fertilization;Microbial community;Microbial functional diversity
期刊名称:APPLIED SOIL ECOLOGY ( 影响因子:4.046; 五年影响因子:4.884 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: A long-term field experiment was used to evaluate the effects of different fertilizers (OIO, organic inorganic compound fertilizer specially formulated for mulberry; N, N fertilizer only; NPK, N, P and K fertilizer; NF, the control without fertilization) on microbial abundance, community structure and microbial functional diversity. The OIO treatment exhibited the highest bacterial and actinomycete levels, community diversity, Shannon indices and average well color development (AWCD). However, the N treatment resulted in the highest fungi levels. Bacillus sp. were the dominant bacteria in the OIO treatment. The carbohydrate and carboxylic acid utilization by microbes was highest in the OIO treatment, whereas the amino acid utilization was highest in the N treatment. Most microbial parameters were primarily correlated with the soil organic matter content. The principal component analysis of the DGGE profiles suggested that the culture-independent bacterial community was not really affected by the fertilization treatments but was significantly affected by the sampling time. In contrast, the carbon substrate utilization was significantly affected by the fertilization treatments but not by the sampling time. Our findings suggested that the soil microbial activities were significantly changed by long-term fertilization and that more attention should be devoted to seasonal shifts in the microbial community. (C) 2014 Elsevier B.V. All rights reserved.
分类号: S154.1
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