摘要
细极链格孢菌蛋白激发子是一种能诱导植物获得系统抗病性的新型蛋白激发子。在湘杂棉3号的主要生育期,用细极链格孢菌蛋白激发子(PEAT)蛋白粗提液进行叶面喷施后,对棉花叶片中酶保护系统的变化进行了研究。结果表明,经细极链格孢菌蛋白激发子诱导后,棉花叶片POD、SOD、NR的活性与C/N比对照显著增加,而MDA含量比对照显著减少。这可能是PEAT影响棉花细胞内微环境的氧化、还原状态激发植株体内酶保护系统,激活植物自身防卫系统与生长系统,从而使棉花产生对病虫害的抗性,促进了植株生长。
The protein elicitor from Altemaria tenuissima （PEAT） was previously shown to be an efficient elicitor of induced sys- tematic resistance in several crops. The role of crude extracts of PEAT on enzymatic protection system in cotton leaves by foliar spraying was investigated in growth and development periods of the Hunan Hybr/d Cotton 3. Results showed that the activity of POD, SOD, SR and the ratio of C/N increased significantly when PEAT was sprayed on cotton leaves. However, the activity of MDA decreased significantly at the same time. It was speculated that PEAT might affect the redox ofmicroenvironment in cotton leaves. PEAT might elicit the enzymatic protection system and activate the defensive system and growth system. Resistance to disease and pests might be induced and the growth and development might be accelerated in cotton sequentially.
出处
《棉花学报》
CSCD
北大核心
2010年第2期120-124,共5页
Cotton Science
基金
转基因生物新品种培育科技重大专项(2008ZX08005-001)
关键词
细极链格孢菌
蛋白激发子
保护酶系统
Altemaria tenuissima
protein elicitor
enzymatic protection system
