中国蔬菜Issue(11)：79-85,7.DOI:10.19928/j.cnki.1000-6346.2025.2047
植生拉乌尔菌对盐胁迫下黄瓜幼苗生长和生理的影响
Effects of Raoultella planticola on the Growth and Physiology of Cucumber Seedlings under Salt Stress
摘要
Abstract
Soil salinization has emerged as a significant abiotic stress factor that constrains greenhouse cucumber cultivation.This study employed the cucumber cultivar'Jinyou 401'as experimental material,with four treatments:control(CK),salt stress(S),bacterial treatment(T),and combined bacterial-salt treatment(TS),to systematically investigate the mitigating effects of Raoultella planticola on cucumber seedlings under saline stress conditions.The experimental results demonstrated that Raoultella planticola application significantly enhanced plant height,stem diameter,and biomass(including both fresh and dry weights of shoot and root)in salt-stressed cucumber seedlings compared with the S treatment.Furthermore,Raoultella planticola treatment substantially reduced Na+accumulation in plant tissues under saline conditions.Notably,Raoultella planticola application significantly increased reduced glutathione(GSH)content while markedly decreasing the concentrations of H2O2,O2-.,and malondialdehyde(MDA)by 51.47%,55.42%,and 30.13%,respectively.Additionally,even when compared with the non-saline stress treatment(CK),Raoultella planticola application(TS treatment)significantly elevated GSH levels and enhanced the antioxidant capacity of cucumber seedlings.These findings collectively indicate that Raoultella planticola can effectively mitigate Na+accumulation and ion toxicity under salt stress,increase GSH content to scavenge salt-induced reactive oxygen species,and consequently improve the salt tolerance of cucumber seedlings.关键词
黄瓜/盐胁迫/植生拉乌尔菌Key words
cucumber/salt stress/Raoultella planticola引用本文复制引用
李晨曦,刘兴群,田永强,高丽红..植生拉乌尔菌对盐胁迫下黄瓜幼苗生长和生理的影响[J].中国蔬菜,2025,(11):79-85,7.基金项目
北京市乡村振兴农业科技项目(NY2502120025),财政部和农业农村部:国家现代农业产业技术体系资助项目(CARS-23) （NY2502120025）
