Arbuscular Mycorrhizal Fungi Alleviates Salt-Alkali Stress Demage on Syneilesis aconitifolia

作     者：Linlin Fang Jiamei Xu Chunxue Yang 

作者机构：College of Landscape ArchitectureNortheast Forestry UniversityHarbin150040China 

出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)

年 卷 期：2023年第92卷第12期

页      面：3195-3209页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：funded by the National Natural Science Foundation of China with Grant Number 31601986 the Heilongjiang Postdoctoral Scientific Research Developmental Fund (LBH-Q16005) 

主　　题：Physiological property antioxidant system osmotic regulation abiotic stress medicinal plant 

摘      要：Syneilesis aconitifolia is a potential ground cover and decorative material in gardens,which exhibits a strong salt-alkali tolerance,and also has medicinal *** this study,the arbuscular mycorrhizal(AM)fungi community in the soil surrounding *** roots in the Songnen saline-alkali grassland was used as the inoculation medium for a pot cultivation *** normal culture for 90 days,NaCl and NaHCO_(3) solutions were applied to subject plants to salt or alkali *** concentrations of 50,100,and 200 mmol/L were applied for 10 days,and mycorrhizal colonization,biomass,relative water content(RWC),chlorophyll concentration,malondialdehyde(MDA)concentration,antioxidant system activity,and osmomodulator concentration were determined to identify the effects of AM fungi on root colonization status and salinity tolerance in *** were three key results.(1)Compared to the controls,the intensity and rate of colonization decreased under saline-alkali stress,and the adaptability of AM fungi under low concentration alkali stress was higher than that under salt stress.(2)The AM fungi could increase the biomass,RWC,and chlorophyll concentration,and decrease the MDA concentration of *** to some *** an increase in the salt or alkali solution concentration,AM fungi not only upregulated the activity of the antioxidant system,but also increased the concentration of osmotic regulatory substances.(3)A multivariate analysis of variance(ANOVA)and radar map analysis showed that the mechanisms of resistance to salt and alkali stress were not the same in *** the salt treatment,AM fungi mainly regulated salt stress through osmotic regulatory substances such as soluble sugars,soluble proteins,and *** the alkali treatment,AM fungi mainly regulated alkali stress through glutathione(GSH),soluble sugars,and *** results showed that the colonization rate of *** under low concentration alkali stress was