南京林业大学学报（自然科学版）2024，Vol.48Issue(4)：168-176,9.DOI:10.12302/j.issn.1000-2006.202207008
接种丛枝菌根真菌对盐胁迫下文冠果生长及生理特性的影响
Effects of arbuscular mycorrhizal fungi on the growth and physiological characteristics of Xanthoceras sorbifolium under salt stress
摘要
Abstract
[Objective]An investigation on the effects of arbuscular mycorrhizal(AM)fungi inoculation on the growth,physiological metabolism,and salt tolerance of Xanthoceras sorbifolium under salt stress was conducted.[Method]In this study,Funneliformis mosseae was used to infect seedlings and the pot experiment was carried out using one-year-old X.sorbifolium seedlings.We applied different concentrations of NaCl stress(0,80,160,240,and 320 mmol/L).After the stress period,the biomass,colonization characteristics,and physiological indicators of the X.sorbifolium seedlings were measured.[Result](1)The aboveground and underground biomasses of X.sorbifolium seedlings were enhanced significantly by AM symbiosis upon exposure to salinity.Increasing salinity significantly caused a decrease in the mycorrhizal colonization rate.(2)AM fungi inoculation significantly improved the contents of soluble protein,proline,glutathione(GSH),and ascorbic acid(AsA),and resulted in an increasement in the activities of superoxide dismutase(SOD)and peroxidase(POD),yet a reduction in the relative conductivity and accumulation of malondialdehyde(MDA).(3)Furthermore,two-way analysis of variance(Two-way ANOVA)demonstrated that the duration and concentration were interactively and significantly affecting correlated with the content of MDA,proline,soluble protein,and AsA(P＜0.01).Based on principal component analysis(PCA),it was found that the inoculation group had the most profound impact on the physiological characteristics of X.sorbifolium at 320 mmol/L NaCl treatment.[Conclusion]This study found that inoculation with AM fungi may advance osmotic mediation ability,significantly improve the activities of antioxidant enzymes and the contents of antioxidants,and enhance the salt tolerance of plants and eventually promote the growth of X.sorbifolium seedlings under different salt concentrations.关键词
丛枝菌根真菌/盐胁迫/文冠果/生理特性Key words
arbuscular mycorrhizal fungi/salt stress/Xanthoceras sorbifolium/physiological characteristics分类
农业科技引用本文复制引用
宗建伟,李柽,张静,杨雨华..接种丛枝菌根真菌对盐胁迫下文冠果生长及生理特性的影响[J].南京林业大学学报（自然科学版）,2024,48(4):168-176,9.基金项目
河南省科技攻关计划项目(232102110179) （232102110179）
河南省高校重点项目(19A220002,21B220001) （19A220002,21B220001）
河南牧业经济学院博士科研启动资金(2018HNUAHEDF018,2018HNUAHEDF019). （2018HNUAHEDF018,2018HNUAHEDF019）
