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Characterization of microbial community structure in rhizosphere soils of Cowskin Azalea (Rhododendron aureum Georgi) on northern slope of Changbai Mountains, China

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Abstract

The vegetation and soil are mutual environmental factors, soil characteristics, such as chemical properties and microorganism that affect the vegetation occurrence, development and succession speed. In this study, we evaluated the structure of microbial communities of rhizosphere of Cowskin Azalea (Rhododendron aureum Georgi) populations and compared with non-rhizosphere soils at four sample sites of the Changbai Mountains, China, and analyzed the correlation between chemical properties of soil and microbial communities. The results showed that microbial structure and soil chemical properties are significant superior to non-rhizosphere at all four sample sites. The rhizosphere microorganisms are mainly composed of bacteria, actinomycetes, followed by fungi least. The principal component analysis (PCA) biplot displayed that there are differences between rhizosphere and non-rhizosphere soils for microflora; Through correlation analysis, we found that the bacteria is clearly influenced by pH on the Changbai Mountains, besides pH, other soil features such as NO –3 -N. These data highlight that R. aureum as the dominant vegetation living in the alpine tundra is a key factor in the formation of soil microorganism and improving soil fertility, and is of great significance for the maintenance of alpine tundra ecosystem.

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Authors and Affiliations

  1. National & Local United Engineering Laboratory for Chinese Herbal Medicine Breeding and Cultivation, Jilin University, Changchun, 130112, China

    Wei Zhao, Jianwei Lyu & Xia Chen

  2. College of Basic Medicine, Qiqihar Medical University, Qiqihar, 161006, China

    Xiaojuan Qi

  3. School of Life Science, Jilin University, Changchun, 130021, China

    Wei Zhao & Xia Chen

  4. Changbai Mountains Academy of Sciences, Antu, 133613, China

    Wei Zhao

  5. Jilin University, Changchun, 130112, China

    Zhengxiang Yu

Authors
  1. Wei Zhao
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  2. Xiaojuan Qi
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  3. Jianwei Lyu
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  4. Zhengxiang Yu
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  5. Xia Chen
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Correspondence to Xia Chen.

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Foundation item: Under the auspices of Wildlife Conservation and Management of National Forestry Bureau of China

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Zhao, W., Qi, X., Lyu, J. et al. Characterization of microbial community structure in rhizosphere soils of Cowskin Azalea (Rhododendron aureum Georgi) on northern slope of Changbai Mountains, China. Chin. Geogr. Sci. 26, 78–89 (2016). https://doi.org/10.1007/s11769-015-0787-5

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  • DOI: https://doi.org/10.1007/s11769-015-0787-5

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