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Diversity of culturable bacteria in mudflat sediments of the Pearl River Estuary and exploitation of microplastic-degrading bacterial resources
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Ying WANG1, Huanhuan HE1, Chunyan LU1, Zhuohuan ZHENG1, Sen WANG1, Yi HUANG1, Bingyu LI1, Lei DONG1, *, Wenjun LI1, 2, *
Acta Microbiologica Sinica | 2025, 65(4) : 1341 - 1357
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Acta Microbiologica Sinica | 2025, 65(4): 1341-1357
• Microbial resources diversity •
Diversity of culturable bacteria in mudflat sediments of the Pearl River Estuary and exploitation of microplastic-degrading bacterial resources
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Ying WANG1, Huanhuan HE1, Chunyan LU1, Zhuohuan ZHENG1, Sen WANG1, Yi HUANG1, Bingyu LI1, Lei DONG1, *, Wenjun LI1, 2, *
Affiliations
  • 1.State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
  • 2.State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang, China
Published: 2025-04-04 doi: 10.13343/j.cnki.wsxb.20240774
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[Objective] To explore the diversity of culturable bacteria in the mudflat sediments of the Pearl River Estuary in Guangdong Province and to mine strain resources capable of degrading microplastics from these sediments. [Methods] Five media were used for microbial isolation, and phylogenetic analysis was performed by MEGA-X software. The polyethylene terephthalate (PET) medium was selected to screen PET microplastic-degrading strains, and then gene function annotation was performed. [Results] A total of 265 bacterial strains belonging to 71 genera, 32 families of 4 phyla were isolated, including 168 (63.40%) strains of Pseudomonadota, 38 (14.34%) strains of Actinomycetota, 31 (11.70%) strains of Bacillota, and 28 (10.56%) strains of Bacteroidota. Based on the homology of 16S ribosomal RNA (16S rRNA) gene sequences, it was hypothesized that 59 of these strains might be potential new species. From the isolated strains, one PET microplastic-degrading strain was screened. [Conclusion] This study successfully obtained unique microbial resources from the tidal flats of Xiangzhou District, Zhuhai City and one strain capable of degrading PET and using PET as the sole carbon source.

Pearl River Estuary  /  mudflat sediments  /  bacterial isolation  /  microplastic degradation
Ying WANG, Huanhuan HE, Chunyan LU, Zhuohuan ZHENG, Sen WANG, Yi HUANG, Bingyu LI, Lei DONG, Wenjun LI. Diversity of culturable bacteria in mudflat sediments of the Pearl River Estuary and exploitation of microplastic-degrading bacterial resources[J]. Acta Microbiologica Sinica, 2025 , 65 (4) : 1341 -1357 . DOI: 10.13343/j.cnki.wsxb.20240774
Funding
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  • Key Research Program of Guangzhou Science and Technology Bureau(2024B03J1276)
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Year 2025 volume 65 Issue 4
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Article Info
doi: 10.13343/j.cnki.wsxb.20240774
  • Receive Date：2024-12-03
  • Online Date：2026-02-06
  • Published：2025-04-04
Article Data
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History
  • Received：2024-12-03
  • Accepted：2024-12-19
Funding
Key Research Program of Guangzhou Science and Technology Bureau(2024B03J1276)
Affiliations
    1.State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
    2.State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang, 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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