Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 33, Issue -, Pages 157-167Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2016.07.003
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Funding
- National Science Foundation [IOS-1621027, MCB-1157921, MCB-1412644]
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [1412547] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1621027] Funding Source: National Science Foundation
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By controlling the opening and closure of the stomata! pores through which gas exchange occurs, guard cells regulate two of the most important plant physiological processes: photosynthesis and transpiration. Accordingly, guard cells have evolved exquisite sensory systems. Here we summarize recent literature on guard cell sensing of light, drought (via the phytohormone abscisic acid (ABA)), and CO2. New advances in our understanding of how guard cells satisfy the energetic and osmotic requirements of stomata] opening and utilize phosphorylation to regulate the anion channels and aquaporins involved in ABA stimulated stomatal closure are highlighted. Omics and modeling approaches are providing new information that will ultimately allow an integrated understanding of guard cell physiology.
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