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	2013
形態種別	論文
査読	査読あり
標題	Plant cell walls as suppliers of potassium and sodium ions for induced resistance of pea (Pisum sativum L.) and cowpea (Vigna ungiculata L.).
執筆形態	共著
掲載誌名	J Gen Plant Pathol,
掲載区分	国外
巻・号・頁	79((1)),pp.12-17
著者・共著者	Amano M, Toyota K, Kiba A, Inagaki Y, Ichinose Y, Shiraishi T
概要	When an elicitor is applied to plants to induce resistance, one of the first detectable events is the efflux of ions from the treated tissue. Here we are the first to demonstrate that an elicitor from Mycosphaerella pinodes evokes leakage of Na+ and K+ ions from isolated cell walls of pea and cowpea in vitro, as observed for epicotyl tissues. Pharmacological experiments showed that this elicitor-stimulated leakage was sensitive to vanadate and N-(3-methylphenyl)biphenyl-4-sulfonamide (NGXT-191), that inhibit a cell wall-associated ATPase (apyrase). Vanadate or NGXT-191 suppressed elicitor-induced superoxide generation and expression of defense genes in vivo. On the basis of these results, we assume that the leakage of these ions, probably associated with an ATP-dependent process(es) in the cell wall, is likely associated with induced defenses of pea and cowpea.