山西农业大学学报（自然科学版）2025，Vol.45Issue(2)：9-19,11.DOI:10.13842/j.cnki.issn1671-8151.202408017
接种丛枝菌根真菌下文冠果幼苗对干旱胁迫的生理响应
Physiological responses of Xanthoceras sorbifolium seedlings inoculated with Arbuscular mycorrhizal fungi under drought stress
摘要
Abstract
[Objective]X sorbifolia Bunge is the only woody oil crop in northern China,and drought is one of the main factors af-fecting its growth.Arbuscular mycorrhizal(AM)fungi can form symbiotic relationships with plants and improve their stress re-sistance.However,the effects of AM fungi on the drought resistance of X.sorbifolia remain unclear.[Methods]The indoor pot experiment was carried out under controlled condition.Seedlings of X.sorbifolia were inoculated with Diversispora versi-formis,Rhiaophagus intraradices,Funneliformis mosseae,or a mixture of three AM fungal species.The seedlings were sub-jected to normal watering and mild,moderate,and severe drought stress.The effects of these treatments on the growth charac-teristics,osmotic adjustment substances,and antioxidant enzyme activities of X.sorbifolia seedlings were analyzed.[Results](1)All four AM fungal treatments successfully formed symbiotic relationships with X.sorbifolia seedlings.As drought stress intensified,the mycorrhizal colonization rate initially increased and then decreased,with varying colonization efficiencies among different fungal treatments.(2)Drought stress inhibited plant growth,but inoculation with AM fungi increased plant height,aboveground biomass and root biomass.(3)Inoculation with AM fungi promoted the accumulation of soluble sugars and solu-ble proteins in X.sorbifolia,reduced the accumulation of proline and malondialdehyde content,and increased the activities of SOD,POD and CAT,thereby improving the drought resistance of X.sorbifolia seedlings.(4)Comprehensive analysis using the membership function method revealed that the mixed fungal treatment provided the best improvement in drought resistance,followed by inoculation with D.versiformis.[Conclusion]Inoculation with AM fungi can effectively improve the drought resis-tance of X.sorbifolia seedlings.The promotion effects vary among different AM fungi species,with the mixed fungal treat-ment showing more significant benefits than single-species inoculations.关键词
丛枝菌根真菌/干旱胁迫/文冠果/综合评价Key words
Arbuscular mycorrhizal fungi/Drought stress/X.sorbifolia/Comprehensive evaluation分类
林学引用本文复制引用
麻云霞,贺琴,李钢铁,张月欣..接种丛枝菌根真菌下文冠果幼苗对干旱胁迫的生理响应[J].山西农业大学学报（自然科学版）,2025,45(2):9-19,11.基金项目
内蒙古自治区高校科研自然科学重点项目(NJZZ23030) （NJZZ23030）
内蒙古自治区自然科学基金项目(2023QN03049) （2023QN03049）
内蒙古农业大学高层次/优秀博士引进人才科研启动项目(NDYB2021-9) （NDYB2021-9）
