ABA control of plant macroelement membrane transport systems in response to water deficit and high salinity

<jats:title>Summary</jats:title><jats:p>Plant growth and productivity are adversely affected by various abiotic stressors and plants develop a wide range of adaptive mechanisms to cope with these adverse conditions, including adjustment of growth and development brought about by changes in stomatal activity. Membrane ion transport systems are involved in the maintenance of cellular homeostasis during exposure to stress and ion transport activity is regulated by phosphorylation/dephosphorylation networks that respond to stress conditions. The phytohormone abscisic acid (<jats:styled-content style="fixed-case">ABA</jats:styled-content>), which is produced rapidly in response to drought and salinity stress, plays a critical role in the regulation of stress responses and induces a series of signaling cascades. <jats:styled-content style="fixed-case">ABA</jats:styled-content> signaling involves an <jats:styled-content style="fixed-case">ABA</jats:styled-content> receptor complex, consisting of an <jats:styled-content style="fixed-case">ABA</jats:styled-content> receptor family, phosphatases and kinases: these proteins play a central role in regulating a variety of diverse responses to drought stress, including the activities of membrane‐localized factors, such as ion transporters. In this review, recent research on signal transduction networks that regulate the function ofmembrane transport systems in response to stress, especially water deficit and high salinity, is summarized and discussed. The signal transduction networks covered in this review have central roles in mitigating the effect of stress by maintaining plant homeostasis through the control of membrane transport systems.</jats:p><jats:p><jats:table-wrap position="anchor"> <jats:table frame="void"> <jats:col /> <jats:col /> <jats:col /> <jats:thead> <jats:tr> <jats:th /> <jats:th>Contents</jats:th> <jats:th /> </jats:tr> </jats:thead> <jats:tbody> <jats:tr> <jats:td /> <jats:td>Summary</jats:td> <jats:td>35</jats:td> </jats:tr> <jats:tr> <jats:td>I.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0002">Introduction</jats:ext-link></jats:td> <jats:td>35</jats:td> </jats:tr> <jats:tr> <jats:td>II.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0003">Water deficit stress stimulates ABA biosynthesis and transport</jats:ext-link></jats:td> <jats:td>36</jats:td> </jats:tr> <jats:tr> <jats:td>III.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0004">ABA signal transductions control ion transport for modulating stomatal aperture</jats:ext-link></jats:td> <jats:td>39</jats:td> </jats:tr> <jats:tr> <jats:td>IV.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0005">The involvement of ion transport systems in the maintenance of ion homeostasis during abiotic stress</jats:ext-link></jats:td> <jats:td>42</jats:td> </jats:tr> <jats:tr> <jats:td>V.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0006">Conclusion</jats:ext-link></jats:td> <jats:td>44</jats:td> </jats:tr> <jats:tr> <jats:td /> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-sec-0007">Acknowledgements</jats:ext-link></jats:td> <jats:td>44</jats:td> </jats:tr> <jats:tr> <jats:td /> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#nph12613-bibl-0001">References</jats:ext-link></jats:td> <jats:td>45</jats:td> </jats:tr> </jats:tbody> </jats:table> </jats:table-wrap> </jats:p>