Please wait a minute...
浙江大学学报(农业与生命科学版)  2017, Vol. 43 Issue (6): 676-684    DOI: 10.3785/j.issn.1008-9209.2017.05.021
综述     
细菌对有机污染物的趋化性及其对降解的影响
王慧1,2,胡金星3,秦智慧1,2,徐新华1,沈超峰1,2*
1.浙江大学环境与资源学院环境工程系,杭州 310058;2.浙江省水体污染控制与环境安全技术重点实验室,杭州 310058;3.宁波大学科学技术学院,浙江 宁波315000
Bacterial chemotaxis to organic pollutants and its influence on biodegradation
WANG Hui1,2, HU Jinxing3, QIN Zhihui1,2, XU Xinhua1, SHEN Chaofeng1,2*
(1. Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; 2. Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; 3. College of Science & Technology, Ningbo University, Ningbo 315000, Zhejiang, China)
 全文: PDF(1668 KB)   HTML (
摘要:

有机污染的微生物治理被认为是一种安全、有效和经济的治理方式,其生物可利用性是影响生物降解效率的主要限制因子之一。趋化性可以使细菌与污染物紧密接触,提高有机污染物的生物可利用性,从而提高降解效率。本文综述了细菌趋化性的基本概念及趋化信号传导机制,并以环境中典型的有机污染物为例,重点阐述了趋化对降解的影响,以及从细菌对污染物的趋化、降解和转运之间的关系揭示趋化与降解的内在关联。

关键词: 趋化性生物降解有机污染物    
Abstract:

The bioremediation of organic pollutants is regarded as a safe, economical and efficient strategy. Nevertheless, biodegradation efficiency is not only associated with the degrading capability of bacteria, but also depends on the bioavailability of pollutants, which is influenced by microbial mobility in addition to the soil medium and nature of the pollutants. On account of the high hydrophobicity, most of the soil organic pollutants are strongly adsorbed to soil and the bioavailability is poor. In the past few years, many studies have shown that most motile bacteria can sense and access pollutants through the process of chemotaxis. The chemotactic movement of bacteria can increase the bioavailability of organic pollutants, which in turn have a beneficial role in bioremediation. Chemotaxis has been extensively studied in Escherichia coli, but the E. coli chemosensory system reflects only a small fraction of the diversity of bacterial chemotactic responses. A limited number of compounds like amino acids, organic acids and sugars are the primary attractants for E. coli. Whereas for many free-living bacteria, a much wider range of attractants have been documented, such as naphthalene, toluene, biphenyl, polychlorinated biphenyls, benzoic acid, chlorobenzoic acids, nitroaromatics, methyl parathion and atrazine. The involved species include Pseudomonas sp., Ralstonia sp., Azospirillum sp., Rhizobium sp., Burkholderia sp. and Arthrobacter sp. At present, there is sufficient evidence indicating that chemotaxis can increase the bioavailability of organic pollutants. The best studied example is the degrading capacity of Pseudomonas putida G7 to naphthalene. In addition, studies about the chemotaxis of Ralstonia sp. SJ98 towards p-nitrophenol and Pseudomonas putida DLL-1 to methyl parathion demonstrated that chemotaxis could enhance in situ bioremediation of soil pollution. The effect of bacterial chemotaxis on degradation implies a significant link between chemotaxis and degradation. Chemotaxis is now only observed towards compounds which can be degraded by the microorganisms, while non-substrate compounds are not found to be chemoattractants. And the observation that specific pollutant chemoreceptors were co-localized with the degradation genes on plasmids combined with the coordinately expression of transport, chemoreceptor, and degradation genes, which strongly suggests an inherent link between chemotaxis and degradation. In sum, this paper reviewed recent research progress on bacterial chemotaxis, including signal transduction mechanism, bacterial chemotaxis to typical organic pollutants, with a special focus on the intimate link between chemotaxis and degradation.

Key words: biodegradation    chemotaxis    organic pollutants
收稿日期: 2017-05-02 出版日期: 2017-05-31
CLC:  X 172  
基金资助: 国家自然科学基金(21477110);浙江省科技计划(2017C33020)
通讯作者: 沈超峰(http://orcid.org/0000-0002-8576-6712)     E-mail: ysxzt@zju.edu.cn
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  
王慧
胡金星
徐新华
沈超峰
秦智慧

引用本文:

王慧,胡金星,秦智慧,徐新华,沈超峰. 细菌对有机污染物的趋化性及其对降解的影响[J]. 浙江大学学报(农业与生命科学版), 2017, 43(6): 676-684.

WANG Hui, HU Jinxing, QIN Zhihui, XU Xinhua, SHEN Chaofeng. Bacterial chemotaxis to organic pollutants and its influence on biodegradation. Journal of Zhejiang University (Agriculture and Life Sciences), 2017, 43(6): 676-684.

链接本文:

http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2017.05.021        http://www.zjujournals.com/agr/CN/Y2017/V43/I6/676

[1] 孙扬,徐会娟,李晓晶,李永涛,赵丽霞. 二氯喹啉酸对农田生态系统的影响及其微生物降解研究进展[J]. 浙江大学学报(农业与生命科学版), 2017, 43(6): 727-733.
[2] 谷成刚,相雷雷,任文杰,吴为,刘畅,方国东,王芳. 土壤中酞酸酯多界面迁移转化与效应研究进展[J]. 浙江大学学报(农业与生命科学版), 2017, 43(6): 700-712.
[3] 黄俊伟,闯绍闯,陈凯,凌婉婷,唐翔宇,蒋建东. 有机污染物的植物-微生物联合修复技术研究进展[J]. 浙江大学学报(农业与生命科学版), 2017, 43(6): 757-765.
[4] 胡延春, 刘鹏, 赵春蕊, 郑传廷, 刘玲. 甘肃棘豆中降解苦马豆素内生细菌的筛选与鉴定[J]. 浙江大学学报(农业与生命科学版), 2011, 37(5): 521-526.
[5] 徐向阳  任艳红  黄绚  郑平. 典型有机污染物微生物降解及其分子生物学机理的研究进展[J]. 浙江大学学报(农业与生命科学版), 2004, 30(6): 684-689.
[6] 赵非  刘虹  王淑君  牛桂兰  周宁一. Pseudomonas sp.ZWL73对4-氯硝基苯及多种芳香烃化合物的趋化性[J]. 浙江大学学报(农业与生命科学版), 2004, 30(6): 624-627.
[7] 夏凤毅  郑平  周琪  冯孝善. 邻苯二甲酸酯化合物生物降解性与其化学结构的相关性[J]. 浙江大学学报(农业与生命科学版), 2004, 30(2): 141-146.
[8] 沈东升  方程冉  周旭辉. 一株甲磺隆降解真菌(Penicillium sp.)的降解特性研究 [J]. 浙江大学学报(农业与生命科学版), 2002, 28(5): 542-546.
[9] 张燕  崔福义. 有机污染物对流动电流控制系统给定值的影响 [J]. 浙江大学学报(农业与生命科学版), 2002, 28(1): 98-101.
[10] 官宝红  徐根良  章亭洲  谭天恩. 微生物降解对苯二甲酸 [J]. 浙江大学学报(农业与生命科学版), 2002, 28(1): 114-118.
[11] 徐向阳  祁华宝  王其于. 厌氧颗粒污泥还原脱氯与降解五氯酚(PCP)的研究[J]. 浙江大学学报(农业与生命科学版), 2001, 27(2): 145-150.
[12] 徐向阳 谢雨生 叶敏 郑红飞. 硝基氯苯生产废水中典型有机污染物及其生物可处理性的初步研究 [J]. 浙江大学学报(农业与生命科学版), 2000, 26(4): 404-408.