Non-hydraulic root-sourced signaling regulates the response of maize gas exchange to micro-climate during soil drying
土壤干旱胁迫下非水力根信号调控夏玉米气体交换对大气环境的响应

In the Soil-Plant-Atmosphere Continuum(SPAC),stomata controls the gas exchanges,its behavior is frequently affected by microclimatic conditions and physiological processes.Radiation,air temperature,(CO_2]),and soil moisture are the main factors affecting stomatal aperture.During soil drying,the root-sourced abscisic acid(ABA) plays a central role as a long distance signal inducing stomatal closure and reduction of leaf expansion,both reduce plant water use.With summer maize(cv.Shandan 902),experiments in a...