生态学杂志2024，Vol.43Issue(5)：1333-1340,8.DOI:10.13292/j.1000-4890.202405.004
盐胁迫下接种丛枝菌根真菌对两种典型荒漠河岸林植物幼苗生长和叶绿素荧光特性的影响
Effects of inoculation with arbuscular mycorrhizal fungi on the growth and chlorophyll fluorescence charac-teristics of the seedlings of two typical plant species in desert riparian forest under salt stress
摘要
Abstract
Tamarix ramosissma and Alhagi sparsifolia are two mycorrhizal plant species in the desert riparian forests of the lower reaches of Tarim River,which are strongly affected by salt stress during seedling growth.To investigate the effects of arbuscular mycorrhizal fungi(AMF)on the growth and characteristics of chlorophyll fluorescence of the seedlings of both species under salt stress,a pot experiment was conducted with four treatments,including con-trol(CK),AMF inoculation(+AMF),salt stress(+S),and AMF inoculation under salt stress(+S+AMF).We measured AMF colonization of seedling roots(colonization rate and intensity),growth characteristics(plant height,basal stem,crown width,root length,root surface area,average root diameter,root volume,and root tip num-ber),chlorophyll content(chlorophyll a and b,and total chlorophyll),and chlorophyll fluorescence parameters(minimum fluorescence Fo,maximum fluorescence Fm,photochemical quenching factor qP,non-photochemical quenching factor NPQ,maximum photochemical efficiency Fv/Fm,and potential activity Fv/Fo).The results showed that salt stress significantly inhibited the colonization rate,apparent growth index,chlorophyll content and chlorophyll fluorescence parameters of seedlings of both species(P＜0.05).Inoculation with AMF promoted the aboveground and belowground growth of the seedlings,increased the chlorophyll content and Fo,Fm,and qP val-ues,reduced the magnitude of changes in the NPQ values and salt stress time on Fv/Fm and Fv/Fo,and improved the characteristics of chlorophyll fluorescence to attenuate the damage of salt stress on seedlings.AMF was more effective in mitigating the effect of salt stress on A.sparsifolia seedlings than that on T.ramosissma.Therefore,AMF can promote the growth of seedlings under salt stress by increasing root growth,chlorophyll content,and chlorophyll fluorescence properties in host plants.Such effects vary with different life types of plant species.关键词
丛枝菌根真菌/盐胁迫/多枝柽柳/疏叶骆驼刺/根系/叶绿素荧光Key words
arbuscular mycorrhizal fungi/salt stress/Tamarix ramosissma/Alhagi sparsifolia/root system/chloro-phyll fluorescence引用本文复制引用
陈晓楠,伊力努尔·艾力,高文礼,王海鸥,麦格皮热提古丽·达吾提,马晓东..盐胁迫下接种丛枝菌根真菌对两种典型荒漠河岸林植物幼苗生长和叶绿素荧光特性的影响[J].生态学杂志,2024,43(5):1333-1340,8.基金项目
国家自然科学基金项目(42067067)和新疆维吾尔自治区自然科学基金项目(2020D01A74)资助. （42067067）
