Long-distance signalling of abscisic acid (ABA): the factors regulating the intensity of the ABA signal |
| |
Authors: | Jiang Fan Hartung Wolfram |
| |
Institution: | College of Life Science, BeiJing Normal University, Xin Jie Kou Wai Da Jie 19, 100875 BeiJing, China. |
| |
Abstract: | Abscisic acid (ABA) is a stress signal, which moves in the xylem from the roots to the aerial parts of the plant, where it regulates stomatal movement and the activity of shoot meristems. Root growth-promoting microorganisms in the rhizosphere, lateral ABA flows in the root cortex across apoplastic barriers, ABA redistribution in the stem, leaf apoplastic pH values, and the action of beta-glucosidases, both in the apoplast and the cytosol of the mesophyll, play an important role in the regulation of signal intensity. The significance of abscisic acid glucose ester as a long-distance stress signal is discussed. |
| |
Keywords: | Abscisic acid glucose ester apoplast β -glucosidases pH rhizosphere xylem |
本文献已被 PubMed Oxford 等数据库收录! |
|