ROS Signalling in Stomata

  • Jasmine Pham
  • Radhika DesikanEmail author
Part of the Signaling and Communication in Plants book series (SIGCOMM)


ROS are now well established to act as signalling molecules in stomatal guard cells. Generation of ROS occurs in guard cells via specific enzymes; the most studied enzymatic source being the NADPH oxidase components RBOH, which are involved in both abiotic and biotic stresses. Hormones such as abscisic acid, salicylic acid, ethylene, auxin and cytokinin affect ROS-mediated responses in stomata. Biotic stresses such as virulent bacteria and fungi are also known to affect stomatal movements, and ROS are likely to play a role. Regulation of ROS production and action also occurs at various levels, including antioxidant activities, as well as ROS-sensitive proteins, such as kinases and phosphatases, which transduce ROS to effect stomatal closure. Data are slowly emerging on ROS regulation of ion channels in stomata. A complex integration of signalling pathways mediated via ROS makes guard cells an attractive tool to study ROS signal transduction.


Reactive Oxygen Species Reactive Oxygen Species Production Guard Cell Stomatal Closure Stomatal Opening 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Division of BiologyImperial College LondonSouth KensingtonUK

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