逆境条件下ABA调控根生长发育的分子调控网络

植物的根系是植物从土壤中吸收各种营养元素和水分的重要器官，植物激素ABA在干旱和盐等非生物逆境条件下的植物根系发育中起重要的调控作用。该项目拟在前期的研究基础上以模式植物拟南芥为实验材料，围绕揭示植物通过根发育适应干旱胁迫和高盐胁迫这个中心问题，解析逆境条件下ABA调控根生长发育的分子调控网络，综合运用分子遗传学、细胞生物学、分子生物学、蛋白组学及植物生理学等多学科的研究方法，开展以下几个方面的研究：干旱和高盐胁迫条件下ABA调控植物根生长的分子机理；分析ABA通路中胁迫相关基因ABI4、ATAF1、SDIR1和SDIP1等在调控植物根系生长中的精细通路；分析与总结逆境条件下ABA调控根生长发育的分子调控网络，解析干旱和高盐条件下ABA参与植物根系的发生、侧根及根毛的形成等根发育过程的分子调控网络。

Plant roots are essential organs for plant to absorb nutrients and water from soil. The plant hormone ABA plays important roles to control root development under abiotic stresses, such as drought and salt. Based on the previous research of this key project we use Arabidopsis as model plant and focus on the regulatory network of root development under high salt and drought conditions by combination of molecular genetics, cell biology, proteomics and plant physiology. The main point will be concerned: The mechanism of the ABA in the control of root development under stresses; how do those key genes in ABA pathway, such as ABI4, ATAF1, SDIR1 and SDIP1, play roles in root development; the network of how ABA regulates main and lateral roots, as well as root hair development under abiotic stresses.