生态学杂志2025，Vol.44Issue(11)：3636-3645,10.DOI:10.13292/j.1000-4890.202511.037
叶面喷施胺鲜酯对镉胁迫下苗期绿豆生长的正向调控作用
Positive effect of foliar spraying diethyl aminoethyl hexanoate on the growth of mung bean seedlings under cadmium stress
摘要
Abstract
Cadmium(Cd),one of the most ecotoxic heavy metals,severely inhibits growth and development of crops.We investigated the effects of foliar spraying diethyl aminoethyl hexanoate(DA-6)on morphogenesis,photo-synthetic pigment content,osmotic regulatory substances,and antioxidant defense systems in two cultivars of mung bean(Lyufeng 2 and Lyufeng 5)at the seedling stage under 100 pmol·L-1 Cd stress in a pot experiment.The re-sults showed that foliar spraying DA-6 increased total chlorophyll content,soluble sugar content,and antioxidant enzyme activities.The POD and CAT activities in Lyufeng 2 were increased by 35％and 197％respectively,while those in Lyufeng 5 were increased by 204％and 378％respectively.However,SOD activity in both cultivars de-clined under Cd stress.Foliar spraying of DA-6 improved glutathione metabolism(P＜0.05).In particular,the GSH content of Lyufeng 2 was increased by 30％,GSSG was significantly decreased by 78％,and the GSH/GSSG ratio was increased by 458％.For Lyufeng 5,the GSH content was increased by 53％,GSSG was significantly decreased by 84％,and the GSH/GSSG ratio was increased by 617％.DA-6 could effectively alleviate Cd-induced growth in-hibition in mung bean seedlings through synergistic activation of the POD-CAT antioxidant system,reconstruction of glutathione redox homeostasis,and increase of photosynthetic pigment content.Notably,Lyufeng 2 and Lyufeng 5 showed maximum increases of 59％and 51％in stem diameter and 107％and 78％in total dry biomass,respective-ly.Our results provide theoretical basis and technical support for the application of exogenous plant growth regula-tors to alleviate Cd stress in crops.关键词
绿豆/镉胁迫/植物生长调节剂/胺鲜酯/调控作用Key words
mung bean/cadmium stress/plant growth regulator/diethyl aminoethyl hexanoate(DA-6)/regulatory role引用本文复制引用
孙嘉琦,张晨,董艳蕾,方淑梅,王庆燕,姜海鹏,梁喜龙..叶面喷施胺鲜酯对镉胁迫下苗期绿豆生长的正向调控作用[J].生态学杂志,2025,44(11):3636-3645,10.基金项目
黑龙江省农垦总局科技攻关项目(HNK135-02-10)和国家自然基金面上项目(32472238)资助. （HNK135-02-10）
