植物营养与肥料学报2026，Vol.32Issue(7)：1417-1427,11.DOI:10.11674/zwyf.2025431
外源钙调控作物抗旱性的研究进展
Research progress on the regulation of crop drought tolerance by exogenous calcium
摘要
Abstract
Drought is one of the primary abiotic stresses limiting agricultural production;therefore,enhancing crop drought tolerance is crucial for ensuring global food security.As an essential plant nutrient and a key second messenger,calcium plays a multi-level regulatory role in crop responses to drought stress.This paper systematically reviews the physiological and molecular mechanisms by which exogenous calcium enhances crop drought tolerance,as well as progress in its application.At the physiological level,exogenous calcium alleviates drought injury by maintaining membrane stability,activating antioxidant enzymes,and regulating stomatal movement;among these,calcium oxalate crystals in mesophyll cells have unique functions in regulating intracellular calcium homeostasis.At the molecular level,calcium signaling network interacts with abscisic acid(ABA)and reactive oxygen species(ROS)signaling pathways to finely regulate the expression of downstream stress-responsive genes and the accumulation of osmolytes.At the rhizosphere level,exogenous calcium not only promotes soil aggregate formation via cation bridging to improve soil water retention capacity,but also reshapes the rhizosphere microbial community by enriching drought-tolerant plant growth-promoting rhizobacteria,such as Bacillus and Streptomyces.These beneficial microorganisms synergistically enhance crop systemic resistance by secreting phytohormones and siderophores.Elucidating the mechanisms underlying calcium-mediated drought tolerance and developing varieties with high endogenous calcium use efficiency through molecular breeding will effectively reduce the costs of agricultural drought management.关键词
外源钙/干旱胁迫/钙信号/抗氧化酶/光合作用/气孔调控/分子机制Key words
exogenous calcium/drought stress/calcium signaling/antioxidant enzymes/photosynthesis/stomatal regulation/molecular mechanisms引用本文复制引用
杨正威,宁东峰,李迎,唐和敬,王阳,黄超,苗琛,刘战东..外源钙调控作物抗旱性的研究进展[J].植物营养与肥料学报,2026,32(7):1417-1427,11.基金项目
新疆维吾尔自治区重点研发计划(2023B02040-2) （2023B02040-2）
新疆维吾尔自治区"天池英才"计划(2024) （2024）
国家现代玉米产业技术体系(CARS-02-18) （CARS-02-18）
中国农业科学院科技创新工程项目(ASTIP). （ASTIP）
