The Divergence of Bacterial Communities among Continuous Cropping, Rotational Cropping and New Planting Potato Soils

文献类型： 外文期刊

第一作者： Hu, Qiulong

作者： Hu, Qiulong;Tan, Lin;Gu, Songsong;Chen, Jiren;Cai, Liu;Zhou, Qian;Hu, Xinxi;Qin, Yuzhi;Xiong, Xingyao;Hu, Qiulong;Deng, Ye;Xiong, Xingyao;Yang, Xingxing

作者机构：

关键词： Bacterial abundance; Community structure; Microbial diversity; Potato; Relationship

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2020 年 23 卷 4 期

页码：

收录情况： SCI

摘要： In this study, the diversity, composition and structure of bacterial community were studied in continuous cropping, rotational cropping and new planting potato soils in Hunan Province of China by using high-throughput 16S rRNA gene Illumina sequencing. The results showed that continuous cropping soil had the lowest microbial diversity, while rotational cropping and new planting soils exhibited the similar levels of microbial diversity according to Shannon and Richness indices (P < 0.05). The principal coordinates analysis (PCoA) showed a perfect separation among bacterial community structures of continuous cropping, rotational cropping and new planting potato soils. Community composition analysis showed that continuous cropping potato soil had higher relative abundances of non-beneficial bacteria (Rhodanobacter, Gaiella, Flavobacterium and Burkholderia) that were unfavorable for soil quality and its development as well as agricultural production. In addition, soil property analysis revealed that pH value and total organic carbon (TOC) content in continuous cropping soil was significantly lower than those in rotational cropping and new planting potato soils. Relationship between soil properties and microbial communities indicated that total phosphorus, available phosphorus, available potassium and TOC contents as well as pH were important physicochemical factors that significantly affected bacterial diversity and community structure in continuous cropping, rotational cropping and new planting soils. Therefore, the pH value and TOC content were determined as the most important physicochemical factors to alter the microbial community in continuous cropping potato soils. Collectively, these results provided valuable insights into the mechanisms of continuous-cropping obstacle, which might contribute to improve soil microbial diversity and to enhance soil productivity of continuous cropping potato soil. (C) 2020 Friends Science Publishers

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