摘要
采用15%PEG6000模拟干旱胁迫,研究了不同物质的量浓度的氯化镧对干旱胁迫下矮抗58幼苗叶片抗氧化酶活性、渗透调节物质和抗氧化物质等的影响。结果表明,在一定物质的量浓度范围内,外源施加氯化镧均能显著改善干旱胁迫条件下矮抗58幼苗叶片的抗氧化系统和渗透调节物质而增强其抗旱性,尤以10μmol/L和30μmol/L氯化镧更为明显。与单独干旱胁迫相比,10μmol/L LaCl3使干旱下叶片SOD、GR和DHAR活性、GSH及可溶性蛋白分别增加13.2%、212.5%、50%、23.1%和10.6%,使其膜透性和MDA分别降低53.2%和59.4%;30μmol/L LaCl3使SOD、APX和GR活性、GSH、可溶性糖和可溶性蛋白分别增加10%、20%、43.7%、46.2%、18.6%和14.2%,使膜透性和MDA分别降低47.8%和53.6%。
The effects of lanthanum chloride on physiological properties of Aikang58 seedling leaves were studied under drought stress induced by 15%PEG6000. The results showed that lanthanum chloride could improve the drought tolerance of Aikang58 seedling leaves through increasing the activities of antioxidant enzymes and the contents of osmotic adjustment substances in a certain concentration range, especially for 10 μmol/L and 30 μmol/L LaCI3. Compared with drought stress alone, 10 μmol/L LaCI3 could increase the activities of SOD, GR and DHAR, and the contents of GSH, soluble sugar and soluble protein in leaves of Aikang58 by 13.2%, 212.5%, 50%, 23.1% and 10.6%, respectively. 10 μmol/L LaCl3 could reduce the membrane permeability and MDA content in leaves by 53.2%and 59.4%, respectively. 30 μmol/L LaCl3 could increase the activities of SOD, APX and GR, and the contents of GSH, soluble sugar and soluble protein by 10%, 20%, 43.70%, 46.2%, 18.6% and 14.2%, respectively. 30 μmol/L LaCl3 could reduce the membrane permeability and MDA content in leaves by 47.8% and 53.6%, respectively.
出处
《灌溉排水学报》
CSCD
北大核心
2014年第4期99-102,共4页
Journal of Irrigation and Drainage
基金
河南省教育厅科学技术研究重点项目(13A180302)
河南科技学院高层次人才(博士)科研启动基金项目(2011010)
关键词
矮抗58
渗透调节物质
抗氧化特性
氯化镧
干旱胁迫
Aikang58
osmotic adjustment substance
antioxidant properties
lanthanum chloride
drought stress
