摘要
以3个抗病性不同的酿酒葡萄品种(‘西拉’>‘霞多丽’>‘赤霞珠’)叶片为材料,检测霜霉病菌侵染后几种病原相关信号物质,如脱落酸(ABA)、过氧化氢(H2O2)、一氧化氮(NO)、茉莉酸(JA)和乙烯(ETH)等的变化,以探讨葡萄抵御霜霉病菌的信号转导机制。结果表明,H2O2和NO是葡萄感应霜霉病菌的早期信号分子,且抗性较强的品种‘西拉’的变化最为明显;JA和ABA是抗性较差品种‘赤霞珠’应答霜霉病的信号组分。而3个抗性不同葡萄品种的乙烯变化无明显差别。推测H2O2、NO、JA和ABA均参与了葡萄对霜霉病菌的防御反应,但不同品种间信号转导组分可能存在差异。
Several disease-resistant signal substances, such as abscisic acid （ABA）, hydrogen peroxide （H2O2）, nitric oxide （NO）, jasmonic acid （JA） and ethylene （ETH）, in the leaves of 3 grape cultivars, ‘Syrah＇, ‘Chardonnay＇ and ‘Cabernet Sauvignon＇, with different resistance to Plasmopara viticola, were studied in order to detect the signal transduction mechanisms. The results showed that H2 O5 and NO were involved in the disease response, and ‘Syrah＇ showed strong resistance; JA and ABA were involved in the disease response of the susceptible variety ‘Cabernet Sauvignon＇. Moreover, the level of ETH had no significant difference among the 3 cultivats used. It was presumed that H2O2, NO, JA and ABA were involved in resistance against the downy mildew disease, but there were significantly different reactions among the three cultivars employed.
出处
《植物保护》
CAS
CSCD
北大核心
2010年第2期50-55,共6页
Plant Protection
基金
农业部"948"项目(2006-G26)
关键词
葡萄
霜霉病
信号物质
抗病性
grape
downy mildew
signal substances
resistance
作者简介
通信作者Tel：0532—88030224；E-mail：liuxin6080@yahoo．com.cn
