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

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          Summary

          Ferula 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, Ferula sinkiangensis rhizosphere bacterial communities and the processes that drive its assembly remain unclear. On this study, based on Illumina HiSeq high-throughput sequencing, we explored the diversity, structure and composition of Ferula sinkiangensis rhizosphere bacterial communities at different slope positions and soil depths and their correlation with soil physicochemical properties.  Our results revealed the heterogeneity and variation trends of Ferula sinkiangensis rhizosphere bacterial community diversity and abundance on a fine spatial scale (Slope position, soil depth, rhizosphere and non-rhizosphere) and Found Actinobacteria (22.7%),Proteobacteria (18.6%), Acidobacteria (14.0%), Gemmatimonadetes (10.1%) and Cyanobacteria (7.9%) were the dominant bacterial phyla in Ferula sinkiangensis rhizosphere soil. Among the physiochemical variables, there was a strong positive correlation between phosphorus(AP) and the diversity of rhizosphere bacterial community in Ferula sinkiangensis (p < 0.01). In addition, Soil physicochemical factors jointly explained 29.81% of variation in Ferula sinkiangensis rhizosphere bacterial community structure. Among them, pH largely explained the variation of Ferula sinkiangensis rhizosphere bacterial community structure (5.58%),followed by altitude (5.53%) and total salt (TS, 5.21%).

          Abstract

          Ferula 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, Ferula sinkiangensis rhizosphere bacterial communities and the processes that drive its assembly remain unclear. On this study, based on Illumina HiSeq high-throughput sequencing, we explored the diversity, structure and composition of Ferula sinkiangensis rhizosphere bacterial communities at different slope positions and soil depths and their correlation with soil physicochemical properties. Our results revealed the heterogeneity and variation trends of Ferula sinkiangensis rhizosphere bacterial community diversity and abundance on a fine spatial scale (Slope position, soil depth, rhizosphere and non-rhizosphere) and Found Actinobacteria (22.7%), Proteobacteria (18.6%), Acidobacteria (14.0%), Gemmatimonadetes (10.1%) and Cyanobacteria (7.9%) were the dominant bacterial phyla in Ferula sinkiangensis rhizosphere soil. Among the physiochemical variables, there was a strong positive correlation between phosphorus(AP) and the diversity of rhizosphere bacterial community in Ferula sinkiangensis ( p < 0.01). In addition, Soil physicochemical factors jointly explained 29.81% of variation in Ferula sinkiangensis rhizosphere bacterial community structure. Among them, pH largely explained the variation of Ferula sinkiangensis rhizosphere bacterial community structure (5.58%), followed by altitude (5.53%) and total salt (TS, 5.21%).

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          Author and article information

          Journal
          ScienceOpen Preprints
          ScienceOpen
          16 June 2020
          Affiliations
          [1 ] Shihezi University
          Article
          10.14293/S2199-1006.1.SOR-.PPEUPDD.v1

          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 .

          Funding
          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).

          Ecology, Life sciences

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

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