Diversity and space-time dynamics of the bacterial communities in cotton (Gossypium hirsutum) rhizosphere soil
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 ; Zeng, Jun 1 ; Lin, Qing 1 ;
作者机构: 1.Xinjiang Acad Agr Sci, Inst Microbiol, Urumqi 830091, Xinjiang, Peoples R China
2.Xinjiang Lab Special Environm Microbiol, Urumqi 830091, Xinjiang, Peoples R China
3.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Conservat, Urumqi 830091, Xinjiang, Peoples R China
关键词: Gossypium hirsutum; rhizosphere bacteria; biodiversity; growth stage; biogeography; Illumina MiSeq; 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: 2020 年 66 卷 3 期
页码:
收录情况: SCI
摘要: Rhizosphere bacteria are key determinants of plant health and productivity. In this study, we used PCR-based next-generation sequencing to reveal the diversity and community composition of bacteria in the cotton rhizosphere from samples collected in Xinjiang Province, China. We identified 125 bacterial classes within 49 phyla from these samples. Proteobacteria (33.07% of total sequences), Acidobacteria (19.88%), and Gemmatimonadetes (11.19%) dominated the bacterial community. Marked differences were evident in the alpha-diversity of rhizosphere bacteria during different cotton plant growth and development stages. The operational taxonomic unit (OTU) numbers were highest in seedling and bud stages and decreased at the flowering and fruit-boll-opening stages. Forty-three OTUs from the Proteobacteria were common to all four periods of cotton development. Proteobacteria were more abundant in the rhizospheres of cotton from southern Xinjiang than from northern Xinjiang, while the opposite trend was observed for Acidobacteria. Gemmatimonadetes frequency was broadly the same in both northern and southern Xinjiang. These results suggest that there is abundant diversity in the microbiota of cotton rhizosphere soil. Proteobacteria and Actinobacteria dominated this microbial niche and bacterial communities in the seedling, bud, flowering, and boll-opening stages appear to be more similar to one another than to communities at the other growth stages.
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