寒旱农业科学2026，Vol.5Issue(5)：393-400,8.DOI:10.3969/j.issn.2097-2172.2026.05.001
丛枝菌根真菌提高牧草抗旱性的研究进展
Research Progress on Arbuscular Mycorrhizal Fungi in Improving Drought Resistance of Forage Grasses
摘要
Abstract
Arbuscular mycorrhizal fungi(AMF)form symbiotic associations with most forage plants and play a key role in en-hancing their drought tolerance.In-depth exploration of the mechanisms by which AMF regulate drought resistance in forage plants is an important entry point for understanding the response mechanisms of grassland ecosystems to climate change and can provide a theo-retical basis for ecological protection and the development of smart pastoral systems in arid and semi-arid regions.This paper system-atically summarizes the growth-promoting and root-regulating effects of AMF on forage plants under drought stress and systematically reviews the regulatory roles of AMF on physiological metabolism of forage plants,including stomatal behavior regulation,protection of photosynthesis,enhancement of antioxidant defense systems,regulation of hormone networks,optimization of osmotic adjustment,and strengthening of mineral nutrient uptake.It further elucidates the molecular regulatory mechanisms by which AMF improve drought re-sistance in forage plants,as well as their synergistic or interactive mechanisms with other functional microorganisms.It is concluded that AMF enhance drought resistance of forage plants through three levels:"resource acquisition-physiological regulation-ecologi-cal synergy."Specifically,AMF expand the root absorption range through extraradical hyphal networks,activate soil nutrients,and en-hance the acquisition of water and mineral elements such as phosphorus,it can activate antioxidant defense systems,regulate the syn-thesis of osmotic adjustment substances,and coordinate stomatal opening and closing to maintain water balance and photosynthetic ef-ficiency,and it also constructs mycorrhizal networks to improve the rhizosphere microenvironment and soil structure,thereby enhanc-ing community-level drought tolerance.Future research directions are also proposed,suggesting the integration of multi-omics tech-nologies and long-term field experiments to systematically elucidate the drought-resistance regulatory mechanisms of the AMF-for-age plant symbiotic system,providing scientific basis and technical support for ecological restoration and sustainable grassland man-agement.关键词
丛枝菌根真菌/牧草/干旱胁迫/抗旱机制/微生物互作Key words
Arbuscular mycorrhizal fungus/Forage/Drought stress/Drought-tolerance mechanism/Microbial interaction分类
农业科技引用本文复制引用
胡蓉,姚拓,崔雪莲..丛枝菌根真菌提高牧草抗旱性的研究进展[J].寒旱农业科学,2026,5(5):393-400,8.基金项目
甘肃农业大学科研启动费项目(225005). （225005）
