外源脱落酸对盐胁迫下灰毡毛忍冬幼苗生理特性的影响  

Effect of Abscisic Acid on Physiological Characteristics in Lonicera macranthoides Seedlings Under Salt Stress

作　　者：朱菲菲[1] 刘奕清[2] 陈泽雄[2] 兰建彬[2] 

机构地区：[1]西南大学园艺园林学院,重庆400716 [2]重庆文理学院花卉研究所/重庆市特色植物种苗工程技术研究中心,重庆402160

出　　处：《中药材》2013年第7期1043-1046,共4页Journal of Chinese Medicinal Materials

基　　金：重庆市科技创新能力建设项目(CSTC;2010CB1012);特色植物种苗工程重庆高校创新团队建设项目(201025);重庆高校优秀成果转化项目(KJZH11220)

摘　　要：目的:提高灰毡毛忍冬的耐盐性,为其耐盐逆境栽培提供参考。方法:用不同浓度的脱落酸(ABA)进行预处理后再用浓度为200 mmol/L的NaCl进行盐胁迫7 d,研究外源ABA在盐胁迫下对灰毡毛忍冬幼苗生理特性的影响。结果:外源ABA预处理灰毡毛忍冬幼苗能显著降低MDA含量,提高叶绿素、可溶性糖、可溶性蛋白含量,增强POD、CAT、SOD等植物细胞保护酶活性。结论:外源ABA可以诱导提高灰毡毛忍冬幼苗的抗盐能力、减轻和缓解盐伤害,ABA具有浓度效应。Objective: To improve salt resistance of Lonicera macranthoides seedlings and provide reference for its cultivation of salt tolerance. Methods: Pretreatment of seedlings with abscisic acid( ABA) of different concentrations were used to study the effect of ABA on their physiological and biochemical characteristics under 200 mmol / L NaCl for 7 days. Results: Exogenous ABA significantly decreased the content of malondialdehyde( MDA),increased the contents of chlorophyll,soluble sugar,soluble protein and activities of protected enzymes such as peroxidase( POD),catalase( CAT) and superoxide dismutase( SOD). Conclusion: It is proposed that exogenous ABA as chemical activator can induce salt resistance and decrease alleviate damage degree of salt stress of Lonicera macranthoides seedlings in a dose-dependent manner.

关 键 词：灰毡毛忍冬 脱落酸 盐胁迫 生理特性 

分 类 号：R282.2[医药卫生—中药学]