| Azospirillum brasilense Chemotaxis Depends on Two Signaling Pathways Regulating Distinct Motility Parameters | |
| Mukherjee, T; Kumar, D; Burriss, N; Xie, ZH; Alexandre, G; Alexandre, G (reprint author), Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN USA. galexan2@utk.edu | |
| 发表期刊 | JOURNAL OF BACTERIOLOGY
 |
| ISSN | 0021-9193 |
| 2016-06-01 | |
| 卷号 | 198期号:12页码:1764-1772 |
| DOI | 10.1128/JB.00020-16 |
| 产权排序 | [Mukherjee, Tanmoy; Kumar, Dhivya; Burriss, Nathan; Xie, Zhihong; Alexandre, Gladys] Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN USA; [Xie, Zhihong] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Shandong, Peoples R China; [Kumar, Dhivya] Univ Connecticut, Ctr Hlth, Dept Mol Biol & Biophys, Farmington, CT USA |
| 作者部门 | 海岸带生物学与生物资源利用所重点实验室 |
| 英文摘要 | The genomes of most motile bacteria encode two or more chemotaxis (Che) systems, but their functions have been characterized in only a few model systems. Azospirillum brasilense is a motile soil alphaproteobacterium able to colonize the rhizosphere of cereals. In response to an attractant, motile A. brasilense cells transiently increase swimming speed and suppress reversals. The Che1 chemotaxis pathway was previously shown to regulate changes in the swimming speed, but it has a minor role in chemotaxis and root surface colonization. Here, we show that a second chemotaxis system, named Che4, regulates the probability of swimming reversals and is the major signaling pathway for chemotaxis and wheat root surface colonization. Experimental evidence indicates that Che1 and Che4 are functionally linked to coordinate changes in the swimming motility pattern in response to attractants. The effect of Che1 on swimming speed is shown to enhance the aerotactic response of A. brasilense in gradients, likely providing the cells with a competitive advantage in the rhizosphere. Together, the results illustrate a novel mechanism by which motile bacteria utilize two chemotaxis pathways regulating distinct motility parameters to alter movement in gradients and enhance the chemotactic advantage. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China (NSFC)(31370108) ; National Science Foundation (NSF)(MCB-1330344) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | GRAM-NEGATIVE BACTERIA ; RHODOBACTER-SPHAEROIDES ; TRANSPOSON MUTAGENESIS ; GENE-TRANSFER ; ENERGY TAXIS ; CLONING ; RHIZOSPHERE ; MELILOTI ; BEHAVIOR ; ECOLOGY |
| 研究领域[WOS] | Microbiology |
| WOS记录号 | WOS:000377227700008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/17088 |
| 专题 | 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 |
| 通讯作者 | Alexandre, G (reprint author), Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN USA. galexan2@utk.edu |
| 作者单位 | 1.Univ Tennessee, Dept Biochem Cellular & Mol Biol 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res 3.Univ Connecticut, Ctr Hlth, Dept Mol Biol & Biophys |
| 推荐引用方式 GB/T 7714 | Mukherjee, T,Kumar, D,Burriss, N,et al. Azospirillum brasilense Chemotaxis Depends on Two Signaling Pathways Regulating Distinct Motility Parameters[J]. JOURNAL OF BACTERIOLOGY,2016,198(12):1764-1772. |
| APA | Mukherjee, T,Kumar, D,Burriss, N,Xie, ZH,Alexandre, G,&Alexandre, G .(2016).Azospirillum brasilense Chemotaxis Depends on Two Signaling Pathways Regulating Distinct Motility Parameters.JOURNAL OF BACTERIOLOGY,198(12),1764-1772. |
| MLA | Mukherjee, T,et al."Azospirillum brasilense Chemotaxis Depends on Two Signaling Pathways Regulating Distinct Motility Parameters".JOURNAL OF BACTERIOLOGY 198.12(2016):1764-1772. |
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| Azospirillum brasile（714KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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