[Microbial biodiversity in rhizospheric soil of Torreya grandis 'Merrillii' relative to cultivation history].

酸杆菌 放线菌门 物种丰富度 多样性指数 生物 微生物种群生物学 生物多样性 植物 生态学 农学 细菌 16S核糖体RNA 遗传学
作者
Ye Wen,Yongchun Li,Wei Yu,Xiao Ming Ye,Yu Ting Qian,Wen Sheng Dai
出处
期刊:PubMed [National Institutes of Health]
卷期号:29 (11): 3783-3792 被引量:8
标识
DOI:10.13287/j.1001-9332.201811.034
摘要

To examine the effects of different cultivation history (5 a,10 a, and 15 a) on soil microbial communities, we used Illumina sequencing to investigate the diversity and structure of soil bacterial and fungal communities from Torreya grandis 'Merrillii' fields. The results showed that bacterial Shannon index, the richness estimators Chao1 and ACE were lower in soil in 15 year-old stand than those in other cultivation histories, while Simpson index showed no significant variation. Results from bacterial community NMDS showed that cultivation history played a vital role in driving the changes of soil bacteria communitiy structure. The bacterial communities in 5 and 10 year-old stand had the similar composition. The variations of bacterial richness and diversity as well as community structure (comprised basically of Proteobacteria, Actinobacteria, Acidobacteria, and Chloroflexi) were significantly correlated with soil organic matters, soil C/N, and total nitrogen. The fungi richness estimators of Chao1 and ACE were significantly decreased with increasing cultivation history. Shannon and Simpson indices were significantly higher in soil with 10 year-old stand than soils with other cultivation history. Fungal NMDS could be clustered in the same era. Fungal communities were comprosed of Ascomycota, Basidiomycota and Zygomycota. Changes in fungal richness/diversity and community structure were mainly controlled by the variation of soil organic matter. In conclusion, the predominant factors affecting soil microbial communities were the cultivation history, soil C/N, total nitrogen and organic matter, respectively.

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