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      Variation of rhizosphere bacterial community diversity in the desert ephemeral plant Ferula sinkiangensis across environmental gradients


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          Ferula sinkiangensis ( F.sinkiangensis) is a desert short-lived medicinal plant, and its number is rapidly decreasing. Rhizosphere microbial community plays an important role in plant growth and adaptability. However, F.sinkiangensis rhizosphere bacterial communities and the soil physicochemical factors that drive the bacterial community distribution are currently unclear. On this study, based on high-throughput sequencing, we explored the diversity, structure and composition of F.sinkiangensis rhizosphere bacterial communities at different slope positions and soil depths and their correlation with soil physicochemical properties. Our results revealed the heterogeneity and changed trend of F.sinkiangensis rhizosphere bacterial community diversity and abundance on slope position and soil depth and found Actinobacteria (25.5%), Acidobacteria (16.9%), Proteobacteria (16.6%), Gemmatimonadetes (11.5%) and Bacteroidetes (5.8%) were the dominant bacterial phyla in F.sinkiangensis rhizosphere soil. Among all soil physicochemical variables shown in this study, there was a strong positive correlation between phosphorus (AP) and the diversity of rhizosphere bacterial community in F.sinkiangensis. In addition, Soil physicochemical factors jointly explained 24.28% of variation in F.sinkiangensis rhizosphere bacterial community structure. Among them, pH largely explained the variation of F.sinkiangensis rhizosphere bacterial community structure (5.58%), followed by total salt (TS, 5.21%) and phosphorus (TP, 4.90%).

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          ScienceOpen Preprints
          8 October 2020
          [1 ] Shihezi University

          This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

          Chinese National Basic Research Program 2014CB954203

          All data generated or analysed during this study are included in this published article (and its supplementary information files).


          Ferula sinkiangensis, rhizosphere bacterial community, high-throughput sequencing, soil depth, slope positions, soil physicochemical factors


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