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ID 34237
フルテキストURL
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著者
Marutani, Mizuri Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Taguchi, Fumiko Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Ogawa, Yujiro Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Hossain, Mijan Md. Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Yoshishige, Inagaki Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Toyoda, Kazuhiro Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Shiraishi, Tomonori Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
Ichinose, Yuki Laboratory of Plant Pathology and Genetic Engineering, Graduate School of Natural Science and Technology, Okayama University
抄録

Pseudomonas syringae pv. tabaci 6605 causes wildfire disease on host tobacco plants. To investigate the regulatory mechanism of the expression of virulence, Gac two-Component system-defective mutants, Delta gacA and Delta gacS, and a double mutant, Delta gacA Delta gacS, were generated. These mutants produced smaller amounts of N-acyl homoserine lactones required for quorum sensing, had lost swarming motility, and had reduced expression of virulence-related hrp genes and the algT gene required for exopolysaccharide production. The ability of the mutants to cause disease symptoms in their host tobacco plant was remarkably reduced, while they retained the ability to induce hypersensitive reaction (HR) in the nonhost plants. These results indicated that the Gac two-component system of P. syringae pv. tabaci 6605 is indispensable for virulence on the host plant, but not for HR induction in the nonhost plants.

キーワード
GacA
GacS
Pseudomonas syringae pv. tabaci
quorum sensing
two-component system
備考
Published with permission from the copyright holder.
This is published in Molecular Genetics and Genomics, 2008 Vol.279 Issue.4 pp.313-322
Publisher URL: http://dx.doi.org/10.1007/s00438-007-0309-y
Direct access to Thomson Web of Science record
(C)2007 Springer-Verlag
発行日
2008-04
出版物タイトル
Molecular Genetics and Genomics
279巻
4号
出版者
Springer
開始ページ
313
終了ページ
322
資料タイプ
学術雑誌論文
言語
English
著作権者
Springer-Verlag
査読
有り
DOI
Web of Sience KeyUT
Submission Path
biochemistry/17