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Seasonal Change in Microbial Diversity and Its Relationship with Soil Chemical Properties in an Orchard

文献类型： 外文期刊

作者： Luo, Xuhui 1 ; Wang, Ming Kuang 2 ; Hu, Guiping 3 ; Weng, Boqi 4 ;

作者机构： 1.Fujian Acad Agr Sci, Agr Ecol Inst, Fuzhou, Fujian, Peoples R China

2.Natl Taiwan Univ, Dept Agr Chem, Taipei, Taiwan

3.Jiangxi Sericulture & Tea Res Inst, Nanchang, Jiangxi, Peoples R China

4.Minist Agr & Rural Affairs Peoples Republ China, Fuzhou Sci Observing & Expt Stn Agroenvironm, Fuzhou, Fujian, Peoples R China

5.Agcy Fujian Sci & Technol, Fujian Key Lab Ecol Proc Hilly Agr Red Soil Reg, Fuzhou, Fujian, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2019 年 14 卷 12 期

页码：

收录情况： SCI

摘要： This study aimed to determine the microbial diversity at different soil depths (0-5 and 5-20 cm) in a subtropical orchard during different seasons (i.e., spring, summer and autumn) to advance knowledge of the roles of microbes in orchard ecosystem balance. In tracking experiments conducted in an orchard (established in 1996), the phospholipid fatty acid (PLFA) biomarker method was employed to determine the soil microbial system. The total PLFA concentration did not vary significantly between soil depths but changed between seasons. It peaked in the summer at 258.97 +/- 23.48 mu g g soil(-1) from 0-5 cm and at 270.99 +/- 58.94 mu g g soil(-1) from 5-20 cm. A total of 33 microbial fatty acid biomarkers were observed and identified in the sampled soil. The quantities of PLFAs for 29 microbial groups varied significantly between seasons, except for 15:0 iso 30H, 15:1 iso G, 16:0 20H, and 17:0 iso 30H. The bacterial PLFAs and fungal and actinomycetic PLFAs in the orchard soil collected in summer were significantly more abundant than those collected in the spring or autumn (P < 0.01). The number of soil microorganism species (richness) and the Simpson and Shannon-Wiener indexes were all highest in summer. The total PLFAs, bacterial PLFAs, fungal PLFAs, actinomycetic PLFAs, richness, and Simpson and Shannon-Wiener indexes were all significantly negatively correlated with soil pH, total organic carbon (TOC), total nitrogen (TN) and the cation exchange capacity (CEC) (P < 0.05).

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