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The driving effect of Bacillus megaterium-Celosia argentea L. combination on the succession of microbial communities in cadmium-contaminated soil
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Cai-xing LAI1, Hua LIN1, 2, 3, Ze-hui LIU1, Zi-han DONG1, Jie LIU1, Guo YU1, 4, *
China Environmental Science | 2025, 45(2) : 1036 - 1044
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China Environmental Science | 2025, 45(2): 1036-1044
• Environmental Microbiology •
The driving effect of Bacillus megaterium-Celosia argentea L. combination on the succession of microbial communities in cadmium-contaminated soil
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Cai-xing LAI1, Hua LIN1, 2, 3, Ze-hui LIU1, Zi-han DONG1, Jie LIU1, Guo YU1, 4, *
Affiliations
  • 1.Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China
  • 2.Guangxi Collaborative Innovation Center for Water Pollution Control and water safety in Karst Area, Guilin University of Technology, Guilin 541006, China
  • 3.Guangxi Modern Industry College of Ecology and Environmental Protection, Guilin University of Technology, Guilin 541006, China
  • 4.Center for Water and Ecology, Tsinghua University, Beijing 100084, China
Published: 2025-02-20
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This study focused on the plant-microbe combined remediation system involving Bacillus megaterium and Celosia argentea L., to explore the impact of Bacillus megaterium on the succession of the rhizosphere microbial community and its role in the remediation of cadmium-contaminated soil. High-throughput sequencing analysis was conducted to examine the structural changes in the rhizosphere microbiota of Celosia argentea at different time points (7th, 21st, and 50th days). The results indicated that in the treatment group, inoculated with B. megaterium, the number of OTUs, diversity indices (Shannon, Simpson), and richness indices (Chao1, Ace) of the microbial community were all higher than those in the control group by the 50th day; the Acidobacteriota, Chloroflexi, Proteobacteria, and Bacteroidetes were the core groups within the microbial community; B. megaterium was able to dominate the rhizosphere microbial community in the early stages but its relative abundance gradually declined from 12.01% to 1.17% over the 50days; Functional prediction of the soil microbial community showed that B. megaterium mainly promoted the C and N cycle within the microbial community, potentially exerting a positive influence on the functionality and stability of the microbial community; B. megaterium significantly increased the cadmium content in the leaves of C. argentea and the bioavailable cadmium content in the rhizosphere soil by 40.3% and 17.6%, respectively. This study provides a theoretical foundation and empirical data support for optimizing plant-microbe combined remediation techniques and understanding the succession patterns of microbial communities in plant-microbe combined remediation systems.

phytoremediation  /  Bacillus megaterium  /  Celosia argentea  /  cadmium contamination  /  community succession
Cai-xing LAI, Hua LIN, Ze-hui LIU, Zi-han DONG, Jie LIU, Guo YU. The driving effect of Bacillus megaterium-Celosia argentea L. combination on the succession of microbial communities in cadmium-contaminated soil[J]. China Environmental Science, 2025 , 45 (2) : 1036 -1044 .
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Year 2025 volume 45 Issue 2
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Article Info
  • Receive Date：2024-07-15
  • Online Date：2026-03-17
  • Published：2025-02-20
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  • Received：2024-07-15
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Affiliations
    1.Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China
    2.Guangxi Collaborative Innovation Center for Water Pollution Control and water safety in Karst Area, Guilin University of Technology, Guilin 541006, China
    3.Guangxi Modern Industry College of Ecology and Environmental Protection, Guilin University of Technology, Guilin 541006, China
    4.Center for Water and Ecology, Tsinghua University, Beijing 100084, 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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