摘要
以两个耐盐程度不同的葡萄品种‘夏黑’(耐盐性较弱)和‘里扎马特’(耐盐性较强)为材料,分析了不同浓度ALA对不同浓度盐胁迫下葡萄叶片中AsA-GSH循环的影响。研究表明:喷施75 mg·L-1 ALA可显著提高2 g·kg-1盐胁迫下‘夏黑’葡萄叶片中抗坏血酸过氧化物酶(APX)、谷胱甘肽还原酶(GR)、单脱氢抗坏血酸还原酶(MDHAR)、脱氢抗坏血酸还原酶(DHAR)的活性以及还原型抗坏血酸(As A)、还原型谷胱甘肽(GSH)含量和AsA/DHA、GSH/GSSG比值,显著降低氢抗坏血酸(DHA)与氧化型谷胱甘肽(GSSG)含量;而喷施150 mg·L-1 ALA可显著提高4 g·kg-1盐胁迫下‘里扎马特’葡萄叶片中APX、GR、MDHAR、DHAR的活性以及AsA、GSH含量和AsA/DHA、GSH/GSSG比值,显著降低DHA与GSSG含量。
Using two salinity-resistance grape cultivars: 'Summer Black' (weak salt resistance) and 'Rizamat' (strong salt resistance) as the material, effects of the different concentrations of ALA on AsA-GSH cycle under different concentrations of salt stress in grape leaves were analyzed. The results showed that spraying 75 mg·L^-1 ALA can significantly improve activities of ascorbic acid peroxidase (APX), glutathione reductase (GR), mono- dehydroascorbate reductase (MDHAR), dehydroascorbic acid reductas (DHAR) and contents of ascorbic acid (AsA) and glutathione (GSH) and AsA/DHA, GSH/GSSG ratio, significantly reduce contents of hydrogen ascorbic acid type (DHA) and oxidized glutathione (GSSG) in 'Summer Black' grape leaves under 2 g·kg^-1 salt stress. And spraying 150 mg·L^-1 ALA can significantly improve activities ofAPX, GR, MDHAR, DHAR and contents of AsA and GSH and AsA/DHA, GSH/GSSG ratio, significantly reduce contents of DHA and GSSG in 'Rizamat' grape leaves under 4 g·kg^-1 salt stress.
出处
《植物生理学报》
CAS
CSCD
北大核心
2015年第3期385-390,共6页
Plant Physiology Journal
基金
国家自然科学基金(31460495)
石河子大学优秀青年基金(2012ZRKXYQ09)
作者简介
通讯作者(E—mail:junli7656@126.com;Tel:0993-2057992)。