| 红树林湿地多环芳烃的微生物降解 |
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| 引用本文： | 李羽,罗丽娟,杨旭楠,许玫英,栾天罡. 红树林湿地多环芳烃的微生物降解[J]. 微生物学报, 2022, 62(2): 489-507 |
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| 作者姓名： | 李羽 罗丽娟 杨旭楠 许玫英 栾天罡 |
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| 作者单位： | 广东工业大学环境生态工程研究院, 广东省流域水环境治理与水生态修复重点实验室, 广东 广州 510006;广东省科学院微生物研究所, 华南应用微生物国家重点实验室, 广东省菌种保藏与应用重点实验室, 广东 广州 510070;广东工业大学环境生态工程研究院, 广东省流域水环境治理与水生态修复重点实验室, 广东 广州 510006;中山大学生命科学学院, 有害生物控制与资源利用国家重点实验室, 广东 广州 510275 |
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| 基金项目： | 广东省重点领域研发计划（2019B110205004，2020B1111530001，2019B110205003）；广东省科学院建设国内一流研究机构行动专项资金（2020GDASYL-20200301003）；珠江人才计划引进创新创业团队项目（2019ZT08L213） |
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| 摘 要： | 红树林(mangrove)是海陆交汇带重要的湿地生态系统,也是环境污染物蓄积与转化的热区.多环芳烃(polycyclic aromatic hydrocarbons,PAHs)因其环境蓄积特点在红树林生境中广泛分布,威胁生态系统健康,其降解转化是近年的研究重点.本文聚焦红树林湿地多环芳烃的微生物降解研究现状,从红树林生...
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| 关 键 词： | 红树林 沉积物 多环芳烃降解 电子受体 微生物 |
| 收稿时间： | 2021-06-01 |
| 修稿时间： | 2021-09-10 |
Advances in microbial degradation of polycyclic aromatic hydrocarbons in mangrove wetlands |
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| LI Yu,LUO Lijuan,YANG Xunan,XU Meiying,LUAN Tiangang. Advances in microbial degradation of polycyclic aromatic hydrocarbons in mangrove wetlands[J]. Acta microbiologica Sinica, 2022, 62(2): 489-507 |
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| Authors: | LI Yu LUO Lijuan YANG Xunan XU Meiying LUAN Tiangang |
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| Affiliation: | Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China;Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong, China; Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China;State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China |
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| Abstract: | Mangrove forest is an important ecosystem in the sea-land interface zone and a hot zone for pollutant accumulation and transformation. Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants widely distributed in mangrove wetlands, threatening ecosystem health. The degradation and transformation of PAHs have attracted increasing attention of researchers in recent years. This paper reviews the available studies about microbial degradation of PAHs in mangrove wetlands from the perspectives of biodegradation rules, functional microorganisms, and influencing factors of PAH degradation in mangrove habitats. We found that the PAHs in mangrove forests had higher content than those in the beach outside the forests, and they accumulated in the sediments at a depth of 10-20 cm. Sulfates were the main electron acceptors (EAs) for anaerobic degradation of PAHs, as they had the highest concentration and infiltrated deeper into the sediments. EAs nitrate, bicarbonate, Fe(III), and Mn(IV) were also distributed in mangrove sediments and played roles on PAH-degradation. PAH-degrading bacteria had high diversity, among which Sphingomonas, Bacillus, Novosphingobium, and Sphingobium were reported frequently. The aerobic-anaerobic alternation condition, radial oxygen loss, root exudates, and exogenous biostimulators were the main factors affecting the biodegradation of PAHs in mangrove habitats. We suggest that researchers can focus on the application technologies of PAH-degrading microorganisms to meet the actual needs of wetland remediation. |
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| Keywords: | mangroves sediments PAH degradation electron acceptors microorganism |
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