菌物学报2025，Vol.44Issue(8)：144-156,13.DOI:10.13346/j.mycosystema.250016
干旱胁迫下不同丛枝菌根真菌对薏米生长和生物量分配的影响
The effects of different arbuscular mycorrhizal fungi on the growth and biomass allocation of Coix lacryma-jobi var.mayuen under drought stress
摘要
Abstract
The growth of plants will be affected to different degrees under drought stress.Arbuscular mycorrhiza(AM)fungi can extend the root system to increase the absorption area of water and nutrients and improve the stress resistance of various plants after symbiosis with plants.However,whether AM fungi can symbiose with plants and the extent of symbiotic effect vary with the types of plants and AM fungi.Coix lacryma-jobi var.mayuen likes moist environment,and drought stress affects its growth and yield seriously.In order to study whether C.lacryma-jobi var.mayuen can symbiose with AM fungi and its growth and biomass allocation strategy after symbiosis,a water pot-controlled experiment was conducted to simulate drought stress.AM fungi Funneliformis mosseae,Claroideoglomus etunicatum,and Claroideoglomus lamellosum were used as inocula and the growth and biomass allocation pattern of post-inoculated C.lacryma-jobi var.mayuen were observed under different water supply conditions(normal water supply,moderate drought,and severe drought).The results showed that the three AM fungi could successfully infect the roots of C.lacryma-jobi var.mayuen,but the infection rate decreased with the intensification of drought stress.Drought stress significantly inhibited the growth and biomass accumulation of C.lacryma-jobi var.mayuen seedlings,and increased the leaf wilting rate and root-to-shoot ratio,but inoculation with AM fungi could promote the growth and biomass accumulation of the seedlings and reduce the wilting rate of leaves,and alleviate inhibitory effect of drought stress on the growth of the seedlings.Different species of AM fungi have different degrees of impact on C.lacryma-jobi var.mayuen.The study showed that inoculation with AM fungi under drought stress can affect the allocation of aboveground and underground biomass and enhance the water-absorbability of the roots,thereby improving the drought resistance of C.lacryma-jobi var.mayuen.关键词
AM真菌/中草药/药用植物/生物量分配/干旱Key words
AM fungi/Chinese herbal medicine/medicinal plant/biomass allocation/drought引用本文复制引用
蒋小欢,梁琴,唐伟杰,杨娜,王微..干旱胁迫下不同丛枝菌根真菌对薏米生长和生物量分配的影响[J].菌物学报,2025,44(8):144-156,13.基金项目
贵州中医药大学博士启动资助项目(贵中医博士启动[2020]15 号) （贵中医博士启动[2020]15 号）
贵州省科技计划项目(黔科合基础-ZK[2022]一般 488) （黔科合基础-ZK[2022]一般 488）
重庆市自然科学基金(cstc2021jcyj-msxmX1019) （cstc2021jcyj-msxmX1019）
贵州中医药大学新苗项目(贵科合学术新苗[2023]-16 号)This work was supported by the Guizhou University of Traditional Chinese Medicine Doctoral Start-up Funding Project(Gui Traditional Chinese Medicine Doctor Startup[2020]15th),the Guizhou Province Science and Technology Plan Project(Qiankehe Basic-ZK[2022]General 488),the Natural Science Foundation of Chongqing City(cstc2021jcyj-msxmX1019),and the Guizhou University of Traditional Chinese Medicine New Seed Project(Guikehe Academic New Seedling[2023]-16th). （贵科合学术新苗[2023]-16 号）
