中国地理科学 ›› 2016, Vol. 26 ›› Issue (1): 78-89.doi: 10.1007/s11769-015-0787-5

• 论文 • 上一篇    下一篇

Characterization of Microbial Community Structure in Rhizosphere Soils of Cowskin Azalea (Rhododendron aureum Georgi) on Northern Slope of Changbai Mountains, China

ZHAO Wei1,3,4, QI Xiaojuan2, LYU Jianwei1, YU Zhengxiang5, CHEN Xia1,3   

  1. 1. National & Local United Engineering Laboratory for Chinese Herbal Medicine Breeding and Cultivation, Jilin University, Changchun 130112, China;
    2. College of Basic Medicine, Qiqihar Medical University, Qiqihar 161006, China;
    3. School of Life Science, Jilin University, Changchun 130021, China;
    4. Changbai Mountains Academy of Sciences, Antu 133613, China;
    5. Jilin University, Changchun 130112, China
  • 收稿日期:2014-07-14 修回日期:2014-11-18 出版日期:2016-01-27 发布日期:2015-12-18
  • 通讯作者: CHEN Xia. E-mail:chenxiajlu@163.com E-mail:chenxiajlu@163.com
  • 基金资助:

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

Characterization of Microbial Community Structure in Rhizosphere Soils of Cowskin Azalea (Rhododendron aureum Georgi) on Northern Slope of Changbai Mountains, China

ZHAO Wei1,3,4, QI Xiaojuan2, LYU Jianwei1, YU Zhengxiang5, CHEN Xia1,3   

  1. 1. National & Local United Engineering Laboratory for Chinese Herbal Medicine Breeding and Cultivation, Jilin University, Changchun 130112, China;
    2. College of Basic Medicine, Qiqihar Medical University, Qiqihar 161006, China;
    3. School of Life Science, Jilin University, Changchun 130021, China;
    4. Changbai Mountains Academy of Sciences, Antu 133613, China;
    5. Jilin University, Changchun 130112, China
  • Received:2014-07-14 Revised:2014-11-18 Online:2016-01-27 Published:2015-12-18
  • Contact: CHEN Xia. E-mail:chenxiajlu@163.com E-mail:chenxiajlu@163.com
  • Supported by:

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

摘要:

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 NO3-—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.

关键词: Rhododendron aureum Georgi, microbial community structure, rhizosphere, Changbai Mountains

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 NO3-—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.

Key words: Rhododendron aureum Georgi, microbial community structure, rhizosphere, Changbai Mountains