Long-distance ABA signaling and its relation to other signaling pathways in the detection of soil drying and the mediation of the plant's response to drought
Long-distance ABA signaling and its relation to other signaling pathways in the detection of soil drying and the mediation of the plant's response to drought
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DOI：
10.1007/s00344-005-0103-1
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发表时间：
2005-12-01
影响因子：
4.8
通讯作者：
Hartung, W
中科院分区：
文献类型：
--
作者：
Davies, WJ;Kudoyarova, G;Hartung, W
在这篇文章中，我们回顾了各种长距离信号通路的证据，包括激素和营养离子在木质部汁液中的移动。我们认为，阿坝至少在根到茎的干旱胁迫信号传递以及干旱土壤中植物功能、生长和发育的调节中发挥着核心作用。我们还强调的重要性，在叶细胞质外体的pH值的变化的影响，土壤和气候变化，作为一种调节剂的芽生长和功能，我们展示了木质部和质外体pH值的变化如何影响阿坝调节气孔行为和生长的方式。强调了pH/阿坝传感和信号传导机制对干旱的敏感性。这允许调节植物生长、发育和功能，特别是枝水状态，与生长和其他过程中作为对扰动（例如土壤干燥）的反应的胁迫损伤不同。
In this article we review evidence for a variety of long-distance signaling pathways involving hormones and nutrient ions moving in the xylem sap. We argue that ABA has a central role to play, at least in root-to-shoot drought stress signaling and the regulation of functioning, growth, and development of plants in drying soil. We also stress the importance of changes in the pH of the leaf cell apoplast as influenced both by edaphic and climatic variation, as a regulator of shoot growth and functioning, and we show how changes in xylem and apoplastic pH can affect the way in which ABA regulates stomatal behavior and growth. The sensitivity to drought of the pH/ABA sensing and signaling mechanism is emphasized. This allows regulation of plant growth, development and functioning, and particularly shoot water status, as distinct from stress lesions in growth and other processes as a reaction to perturbations such as soil drying.