根瘤菌与群体感应

生态学杂志 ›› 2005, Vol. ›› Issue (5): 547-550.

根瘤菌与群体感应

郑会明, 钟增涛, 陈一楠, 朱军

南京农业大学生命科学学院微生物学系农业部农业环境微生物生物工程重点开放实验室, 南京, 210095

收稿日期:2004-07-03 修回日期:2004-10-20 出版日期:2005-05-10
通讯作者: 朱军
基金资助:
国家杰出青年基金项目(30325004);国家重点基础研究发展规划项目(001CB1089);国家自然科学基金资助项目(30200036).

Quorum sensing in nitrogen-fixation rhizobia

ZHENG Huiming, ZHONG Zengtao, CHEN Yi'nan, ZHU Jun

Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agricultrue Key, Department of Microbiology, Nanjing Agricultural University, Nanjing 210095, China

Received:2004-07-03 Revised:2004-10-20 Online:2005-05-10

摘要/Abstract

摘要： 细菌在高细胞密度下可以产生群体感应信号分子,调控细菌相关基因的表达,这种信号分子被称为自体诱导物。酰基高丝氨酸内酯类化合物(acyl-HSLs)是在根瘤菌中广泛存在的一类自体诱导物,该群体感应系统与根瘤菌和植物的共生作用密切相关。本文概述了AHLs介导的群体感应系统的组成及调控机制和不同根瘤菌中群体感应调节对根瘤菌生理行为及共生固氮的影响。

关键词: Cd和Pb污染, 烤烟, 根区, 土壤微生物, 品质

Abstract: Bacteria can regulate gene expression by producing signal molecules termed autoinducers at high cell density.In general,Gram-negative nitrogen-fixation rhizobia use acylated homoserine lactones (acy1-HSLs) as autoinducers.Quorum sensing plays important roles in coordinating the symbiotic process during the interactions between rhizobia and their legume hosts.This review summarized the composition and regulation mechanisms of AHLs-mediated quorum sensing,physiological activity changes and symbiotic nitrogen-fixing effects caused by quorum sensing in rhizobia.

Key words: Cd and Pb pollution, Tobacco, Root zone, Soil microbe, Quality

中图分类号:

Q933

郑会明, 钟增涛, 陈一楠, 朱军. 根瘤菌与群体感应[J]. 生态学杂志, 2005, (5): 547-550.

ZHENG Huiming, ZHONG Zengtao, CHEN Yi'nan, ZHU Jun. Quorum sensing in nitrogen-fixation rhizobia[J]. cje, 2005, (5): 547-550.

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