草业学报Issue(11)：195-205,11.DOI:10.11686/cyxb2014489
内源脱落酸生理作用机制及其与苜蓿耐旱性关系研究进展
Progress in understanding relationships between the physiological mechanisms of endogenous abscisic acid and drought resistance of alfalfa
摘要
Abstract
The shortage of water resources and related ecological crises due to climate change make the drought resistance of crops an important research topic.As a plant stress hormone,abscisic acid (ABA)plays an im-portant role in drought stress response.Abscisic acid is synthesized from the 2-C-methyl-D-erythritol-4-phos-phate (MEP)pathway.Through binding with its receptor,ABA controls stomatal closure by a series of signal transductions and/or regulates stress-related gene expression through other pathways.Alfalfa (Medicago sati-va )is a high-performing legume that is widely cultivated for forage.Under conditions of drought stress,ABA accumulates in alfalfa and is closely related to vegetative protein storage in the tap root,gene expression and a range of osmolyte responses.Research on the relationship between ABA and drought resistance in alfalfa is un-der development.This research will assist understanding drought resistance mechanisms in alfalfa and will have profound influences on the breeding of alfalfa cultivars.关键词
ABA/生理作用机制/苜蓿/耐旱性Key words
abscisic acid/physiological mechanism/alfalfa/drought resistance引用本文复制引用
李跃,万里强,李向林..内源脱落酸生理作用机制及其与苜蓿耐旱性关系研究进展[J].草业学报,2015,(11):195-205,11.基金项目
国家自然科学基金项目“水分胁迫下紫花苜蓿根源信号 ABA 应旱机制及其调控模型研究”（31372370）和国家牧草产业技术体系（CARS-35-12）资助。 （）
