生态学杂志2024，Vol.43Issue(5)：1263-1270,8.DOI:10.13292/j.1000-4890.202405.015
外源精氨酸对盐碱胁迫下绿豆苗期生长的调控效用
Regulation effect of exogenous arginine on mung bean seedling growth under salt-alkali stress
摘要
Abstract
To clarify the regulation effect of exogenous arginine(Arg)on the growth of mung bean seedlings under salt-alkali stress,we analyzed the effects of foliar spraying of different concentrations of Arg on morphological and physiological indices of seedlings of two mung bean cultivars,"Lyufeng 2"and"Lyufeng 5",which were treated with 150 mmol·L-1 salt-alkali.The results showed that appropriate Arg concentration(1.0-1.5 mmol·L-1)sig-nificantly improved the resistance of mung bean seedlings under salt-alkali stress,and alleviated the damage to aboveground tissue and roots.The content of photosynthetic pigments,the activities of antioxidant enzyme(SOD,POD,CAT),and osmoregulatory substances(soluble sugars,soluble proteins,proline)significantly increased,while the production rate of ROS metabolite superoxide anion(O2)and the content of membrane lipid peroxida-tion product malondialdehyde(MDA)significantly decreased.In conclusion,Arg can protect the integrity of cell structure and promote seedling growth by increasing the activities of antioxidant enzymes and osmoregulatory sub-stances and decreasing the production of membrane lipid peroxides,thus enhancing salt tolerance of mung bean seedlings.关键词
盐碱胁迫/精氨酸/绿豆/渗透调节/保护性酶/膜脂过氧化物Key words
saline-alkali stress/arginine/mung bean/osmoregulation/protective enzyme/membrane lipid peroxide引用本文复制引用
王晗昕,王庆燕,刘繁超,庞园园,方淑梅,梁喜龙..外源精氨酸对盐碱胁迫下绿豆苗期生长的调控效用[J].生态学杂志,2024,43(5):1263-1270,8.基金项目
黑龙江省农垦总局科技攻关项目(HNK135-02-10)、国家自然基金项目(32272225)和黑龙江省自然基金项目(LH2023C079)资助. （HNK135-02-10）
