干旱地区农业研究Issue(4)：24-29,36,7.
外源一氧化氮对铅胁迫下玉米幼苗的缓解作用
Mitigative effects of exogenous nitric oxide on Pb 2+ stress in maize seedlings
摘要
Abstract
The pot experiment was conducted to investigate the effects of exogenous nitric oxide (NO ) on the growth and physiological characteristics of maize ( Zea mays ) seedlings under Pb2+ stress .The results demonstrated that ,after treated with 1 .0 mmol·L-1 Pb2+ ,the growth of maize seedlings was inhibited ,the accumulation of soluble protein and soluble sugar was slowed down ,the activity of antioxidant enzymes and chlorophyll content were declined ,while the MDA content and membrane permeability were increased .When 0 .1 mmol·L-1 SNP was supplied ,the inhibition effect of Pb2+ to the growth of seedlings was significantly relieved , the activity of superoxide dismutase (SOD ) , peroxidase (POD ) and catalase (CAT ) was increased ,the content of chlorophyll and proline (Pro ) was increased ,the accumulation of soluble sugar and soluble protein was promoted , and the MDA content and membrane permeability were declined . Therefore ,exogenous NO has a significantly alleviatory effect on the growth of Pb2+ stressed maize seedlings ,and may enhance the Pb2+ resistance of maize seedlings .关键词
玉米/外源NO/Pb胁迫/缓解作用Key words
maize/exogenous nitric oxide/Pb2+ stress/mitigative damage分类
农业科技引用本文复制引用
王芳,陈晓燕,曹廷俊,王汉宁,方永丰,王威..外源一氧化氮对铅胁迫下玉米幼苗的缓解作用[J].干旱地区农业研究,2014,(4):24-29,36,7.基金项目
甘肃农业大学盛彤笙科技创新基金（GSAU-STS -1229）；973计划前期研究专项 （）
