教員情報

イナガキ　ヨシシゲ   INAGAKI YOSHISHIGE   稲垣　善茂    所属   文学部 教育学科    職種   教授
言語種別	英語
発行・発表の年月	2011
形態種別	論文
査読	査読あり
標題	Degeneration of hrpZ gene in Pseudomonas syringae pv. tabaci to evade tobacco defence: an arms race between tobacco and its bacterial pathogen.
執筆形態	共著
掲載誌名	Mol Plant Pathol.
掲載区分	国外
巻・号・頁	12((7)),pp.709-714
著者・共著者	Tsunemi K, Taguchi F, Marutani M, Watanabe-Sugimoto M, Inagaki Y, Toyoda K, Shiraishi T, Ichinose Y.
概要	In P. syringae pv. tabaci (Pta), the harpin gene hrpZ has been spontaneously disrupted by an internal deletion in its open reading frame and a frame shift. The loss of the ability of the recombinant harpin polypeptide of Pta to induce HR despite the high sensitivity of tobacco plants to harpin led us to investigate the meaning of the disrupted hrpZ gene in the virulence of Pta 6605. The hrpZ gene from P. syringae pv. pisi was introduced into wild-type (WT) Pta. The hrpZ-complemented Pta secreted harpin into the culture medium, but failed to cause disease symptoms by both infiltration and spray inoculation. Inoculation with the hrpZ-complemented Pta induced defence responses in tobacco plants, whereas the defence responses of tobacco plants were not prominent on inoculation with WT Pta. These results indicate that an ancestor of Pta might have disrupted hrpZ by an internal deletion to evade plant defences and confer the ability to cause disease in tobacco plants.