Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Bacterial Microbiome Differences between the Roots of Diseased and Healthy Chinese Hickory (Carya cathayensis) Trees

  • Xiao-Hui Bai (College of Life and Environment Science, Huangshan University) ;
  • Qi Yao (Forestry Science and Technology Promotion Center of Shexian) ;
  • Genshan Li (College of Life and Environment Science, Huangshan University) ;
  • Guan-Xiu Guan (College of Life and Environment Science, Huangshan University) ;
  • Yan Fan (College of Life and Environment Science, Huangshan University) ;
  • Xiufeng Cao (Forestry Science and Technology Promotion Center of Shexian) ;
  • Hong-Guang Ma (College of Life and Environment Science, Huangshan University) ;
  • Mei-Man Zhang (College of Life and Environment Science, Huangshan University) ;
  • Lishan Fang (Huangshan Tianzhiyuan Agricultural Products Co., Ltd.) ;
  • Aijuan Hong (Huangshan Shanye Local Specialty Co., Ltd.) ;
  • Dacai Zhai (College of Life and Environment Science, Huangshan University)
  • Received : 2023.05.08
  • Accepted : 2023.07.12
  • Published : 2023.10.28
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Abstract

Carya cathayensis is an important economic nut tree that is endemic to eastern China. As such, outbreaks of root rot disease in C. cathayensis result in reduced yields and serious economic losses. Moreover, while soil bacterial communities play a crucial role in plant health and are associated with plant disease outbreaks, their diversity and composition in C. cathayensis are not clearly understood. In this study, Proteobacteria, Acidobacteria, and Actinobacteria were found to be the most dominant bacterial communities (accounting for approximately 80.32% of the total) in the root tissue, rhizosphere soil, and bulk soil of healthy C. cathayensis specimens. Further analysis revealed the abundance of genera belonging to Proteobacteria, namely, Acidibacter, Bradyrhizobium, Paraburkholderia, Sphaerotilus, and Steroidobacter, was higher in the root tissues of healthy C. cathayensis specimens than in those of diseased and dead trees. In addition, the abundance of four genera belonging to Actinobacteria, namely, Actinoallomurus, Actinomadura, Actinocrinis, and Gaiella, was significantly higher in the root tissues of healthy C. cathayensis specimens than in those of diseased and dead trees. Altogether, these results suggest that disruption in the balance of these bacterial communities may be associated with the development of root rot in C. cathayensis, and further, our study provides theoretical guidance for the isolation and control of pathogens and diseases related to this important tree species.

Keywords

Acknowledgement

We thank Yong-Liang Jiang and Yong Chen for their helpful comments on our manuscript. We would like to thank KetengEdit for its linguistic assistance. This work was supported by the National Natural Science Foundation of China (31900122), the Anhui Provincial Natural Science Foundation (1908085QC124), the Anhui Forestry Science and Technology Innovation project (AHLYCX-2021-14 and AHLYCX-2018-29), the excellent, top-notch Talent Project of Anhui Province (gxgwfx2020060), the Master's degree program of Huangshan University (hsxyssd007), and the Science and Technology Planning Project of Huangshan City (2020KN-06 and 2021KN-05).

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