The morphological responses of the root system to the nitrogen stress
植物根系对氮胁迫的形态学响应

Nitrogen(N),one of the most important nutrients for plants,is an important signal regulating plant growth and development.Four main morphological adaptations of the root system in response to the N supply have been reviewed:(1) A localized stimulatory effect of external nitrate on lateral root elongation.The AtNRT1.1(CHL1) dual-affinity nitrate transporter acts upstream of the ANR1 MADS box gene to mediate this stimulatory effect.(2) A systemic inhibitory effect of high tissue nitrate concentrations on the ...