Long-distance signalling of abscisic acid (ABA): the factors regulating the intensity of the ABA signal
Long-distance signalling of abscisic acid (ABA): the factors regulating the intensity of the ABA signal
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DOI：
10.1093/jxb/erm127
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发表时间：
2008-01-01
影响因子：
6.9
通讯作者：
Hartung, Wolfram
中科院分区：
文献类型：
--
作者：
Jiang, Fan;Hartung, Wolfram
脱落酸（阿坝）是一种胁迫信号，它在木质部中从根转移到植物的地上部分，在那里它调节气孔运动和茎分生组织的活性。根际促生微生物、ABA在根皮层中的侧向流动、ABA在茎、叶质外体pH值中的再分配以及叶肉质外体和胞质中β-葡萄糖苷酶的作用，在信号强度的调节中起着重要作用。讨论了脱落酸葡萄糖酯作为远距离胁迫信号的意义。
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.