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Microbial community structure in the rhizosphere of Xanthium sibiricum in the water-level-fluctuation zone of the Three Gorges Reservoir
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Lanfang ZHOU1, 2, 3, Shengjun WU2, *, Maohua MA2, Hang ZOU1, Jinxia HUANG1, Jun YANG2, 3
Acta Microbiologica Sinica | 2025, 65(2) : 582 - 596
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Acta Microbiologica Sinica | 2025, 65(2): 582-596
• Research Article •
Microbial community structure in the rhizosphere of Xanthium sibiricum in the water-level-fluctuation zone of the Three Gorges Reservoir
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Lanfang ZHOU1, 2, 3, Shengjun WU2, *, Maohua MA2, Hang ZOU1, Jinxia HUANG1, Jun YANG2, 3
Affiliations
  • 1 School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
  • 2 Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
  • 3 Chongqing School, University of Chinese Academy of Sciences, Chongqing, China
Published: 2025-02-04 doi: 10.13343/j.cnki.wsxb.20240580
Outline
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[Objective] To understand the microbial community structure and its relationship with soil quality in the rhizosphere of the dominant plant Xanthium sibiricum in the water-level-fluctuation zone (WLFZ) of the Three Gorges Reservoir. [Methods] We collected the rhizosphere soil samples of X. sibiricum exposed to different flooding stress conditions in a typical WLFZ in Yunyang County, the heart of the Three Gorges Reservoir area. High-throughput sequencing was carried out to analyze the microbial diversity and community structure, and the redundancy analysis was then conducted. [Results] Proteobacteria was the dominant bacterial phylum in the rhizosphere bacteria of X. sibiricum under strong flooding stress (XaRLL) and weak flooding stress (XaRHL), while Ascomycota and Basidiomycota were the dominant fungal phyla in the two types of soil, respectively. Regardless of bacteria or fungi, the linear discriminant analysis effect size (LEfSe) showed that XaRLL always had more key biomarkers than XaRHL. Functional prediction revealed that PWY-3781 associated with aerobic respiration was a dominant metabolic pathway enriched by microorganisms from both XaRLL and XaRHL. Overall, the bacteria and fungi in the rhizosphere of X. sibiricum had strong responses to changes in soil physicochemical properties and enzyme activity. [Conclusion] The results provide a theoretical basis for understanding the relationship between plants and their rhizosphere microorganisms in the WLFZ, as well as their adaptability to strong flooding stress.

Three Gorges Reservoir  /  water-level-fluctuation zone  /  Xanthium sibiricum  /  rhizosphere microorganism
Lanfang ZHOU, Shengjun WU, Maohua MA, Hang ZOU, Jinxia HUANG, Jun YANG. Microbial community structure in the rhizosphere of Xanthium sibiricum in the water-level-fluctuation zone of the Three Gorges Reservoir[J]. Acta Microbiologica Sinica, 2025 , 65 (2) : 582 -596 . DOI: 10.13343/j.cnki.wsxb.20240580
Funding
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  • Scientific Research Project from Chongqing Water Resources Bureau(5000002021BF40001)
  • National Natural Science Foundation of China(42371071)
  • Leading Special Project A of Chinese Academy of Sciences(XDA23040303)
Appendix
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Year 2025 volume 65 Issue 2
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162
66
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Article Info
doi: 10.13343/j.cnki.wsxb.20240580
  • Receive Date：2024-09-19
  • Online Date：2026-02-05
  • Published：2025-02-04
Article Data
Affiliations
History
  • Received：2024-09-19
  • Accepted：2024-10-30
Funding
Scientific Research Project from Chongqing Water Resources Bureau(5000002021BF40001)
National Natural Science Foundation of China(42371071)
Leading Special Project A of Chinese Academy of Sciences(XDA23040303)
Affiliations
    1 School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
    2 Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
    3 Chongqing School, University of Chinese Academy of Sciences, Chongqing, China

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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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