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Diversity analysis of nitrite reductase genes (nirS) in black soil under different long-term fertilization conditions

文献类型： 外文期刊

作者： Tang, Hui 1 ; Yan, Kai 3 ; Zhang, Liping 3 ; Chi, Fengqin 1 ; Li, Qing 3 ; Lian, Shujuan 3 ; Wei, Dan 1 ;

作者机构： 1.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resource, Harbin 150086, Peoples R China

2.Hei Longjiang Acad Agr Sci Postdoctoral Stn, NE Forestry Univ Postdoctoral Stn, Harbin 150086, Peoples R China

3.Hebei Univ, Key Lab Microbial Div Res & Applicat Hebei Prov, Baoding 071002, Peoples R China

关键词： Diversity;Long-term fertilization;NirS genes

期刊名称：ANNALS OF MICROBIOLOGY （ 影响因子：2.112； 五年影响因子：2.151 ）

ISSN：

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收录情况： SCI

摘要： A 30-year fertilizer experiment was conducted to investigate the effects of organic manure and mineral NPK fertilizer on black soil. Four experimental treatments were used: CK, organic manure, mineral NPK fertilizer, and organic manure plus mineral fertilizer. The diversity of the nirS gene was analyzed by PCR-restriction fragment length polymorphism. The Shannon diversity index and Evenness factor, Simpson's diversity and Shannon-Weiner indices, principal component analysis and a one-way analysis of similarities test showed that organic manure made the opposite contribution to soil diversity of nirS genes compared to mineral fertilizer treatment, which resulted in increased diversity of the nirS gene. Comparison of the phylogenetic analysis of nirS genes in the mineral fertilizer and organic manure clone libraries showed that induction by mineral fertilizer was stronger than that by organic manure, based on the types of unique nirS genotypes found in the two libraries and the evolutionary distances between them.

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