Reactive Oxygen Species in the Regulation of Stomatal Movements
| Autor: | Cezary Waszczak, Jaakko Kangasjärvi, Maija Sierla, Triin Vahisalu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology Turgor pressure Plant Science Oxidative phosphorylation Biology 01 natural sciences 03 medical and health sciences Plant Cells Guard cell Genetics Phosphorylation Updates - Focus Issue Ion transporter Ion channel Plant Proteins chemistry.chemical_classification Reactive oxygen species fungi NADPH Oxidases Apoplast Cell biology 030104 developmental biology Biochemistry chemistry Plant Stomata Calcium Signal transduction Reactive Oxygen Species Abscisic Acid Signal Transduction 010606 plant biology & botany |
| Zdroj: | Plant Physiology. 171:1569-1580 |
| ISSN: | 1532-2548 0032-0889 |
| Popis: | Guard cells form stomatal pores that optimize photosynthetic carbon dioxide uptake with minimal water loss. Stomatal movements are controlled by complex signaling networks that respond to environmental and endogenous signals. Regulation of stomatal aperture requires coordinated activity of reactive oxygen species (ROS)-generating enzymes, signaling proteins, and downstream executors such as ion pumps, transporters, and plasma membrane channels that control guard cell turgor pressure. Accumulation of ROS in the apoplast and chloroplasts is among the earliest hallmarks of stomatal closure. Subsequent increase in cytoplasmic Ca(2+) concentration governs the activity of multiple kinases that regulate the activity of ROS-producing enzymes and ion channels. In parallel, ROS directly regulate the activity of multiple proteins via oxidative posttranslational modifications to fine-tune guard cell signaling. In this review, we summarize recent advances in the role of ROS in stomatal closure and discuss the importance of ROS in regulation of signal amplification and specificity in guard cells. |
| Databáze: | OpenAIRE |
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