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Endophytic bacterial communities and spatiotemporal variations in cotton roots in Xinjiang, China

文献类型： 外文期刊

作者： Shi, YingWu 1 ; Yang, HongMei 1 ; Chu, Ming 1 ; Niu, XinXiang 3 ; Huo, XiangDong 1 ; Gao, Yan 1 ; Lin, Qing 1 ; Zeng, Jun 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Microbiol, Urumqi 830091, Peoples R China

2.Xinjiang Lab Special Environm Microbiol, Urumqi 830091, Peoples R China

3.Key Lab Agr Environm Northwest Oasis Minist Agr &, Urumqi 830091, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Conservat, Urumqi 830091, Peoples R China

关键词： Gossypium herbaceum; endophytic bacteria; biodiversity; growth period; biogeography; Miseq sequencing; 16S rRNA gene

期刊名称：CANADIAN JOURNAL OF MICROBIOLOGY （ 影响因子：2.419； 五年影响因子：2.35 ）

ISSN： 0008-4166

年卷期： 2021 年 67 卷 7 期

页码：

收录情况： SCI

摘要： Endogenous bacteria are important for maintaining the health and other ecologically relevant functions of cotton plants. However, little is known about the community structures and diversity of endophytic bacteria in cotton plants. In our study, we used the Illumina amplicon sequencing technology to study the endophytic bacteria found in cotton root tissue in Xinjiang, China. A total of 60.84 x 10(6) effective sequences of the 16S rRNA gene in the V5-V6 variable region revealed a large number of operational taxonomic units (OTUs), namely 81-338 OTUs, at a cutoff level of 3% and a sequencing depth of 50 000 sequences. Among the 23 classes identified, Gammaproteobacteria was the dominant group, followed by Alphaproteobacteria, Actinobacteria, and Bacillus. The diversity of endogenous bacteria differed at different growth periods, with the most OTUs detected in seedlings (654), followed by the budding stage (381), flowering stage (350), and flocking stage (351). A total of 217 OTUs were common to all four stages. Pantoea tags were more common to the Shihezi region, whereas Erwinia labels were more common to the Hami region. These results suggest that the dynamics of endophytic bacterial communities are affected by plant growth stage. This highlights the relevance of microbial diversity studies in improving our understanding of endophyte communities.

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