Journal Article

Nitric oxide signalling in plants: interplays with Ca<sup>2+</sup> and protein kinases

Cécile Courtois, Angélique Besson, Jennifer Dahan, Stéphane Bourque, Grazyna Dobrowolska, Alain Pugin and David Wendehenne

in Journal of Experimental Botany

Published on behalf of Society for Experimental Biology

Volume 59, issue 2, pages 155-163
Published in print February 2008 | ISSN: 0022-0957
Published online January 2008 | e-ISSN: 1460-2431 | DOI: http://dx.doi.org/10.1093/jxb/erm197
Nitric oxide signalling in plants: interplays with Ca2+ and protein kinases

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Much attention has been paid to nitric oxide (NO) research since its discovery as a physiological mediator of plant defence responses. In recent years, newer roles have been attributed to NO, ranging from root development to stomatal closure. The molecular mechanisms underlying NO action in plants are just begun to emerge. The currently available data illustrate that NO can directly influence the activity of target proteins through nitrosylation and has the capacity to act as a Ca2+-mobilizing intracellular messenger. The interplay between NO and Ca2+ has important functional implications, expanding and enriching the possibilities for modulating transduction processes. Furthermore, protein kinases regulated through NO-dependent mechanisms are being discovered, offering fresh perspective on processes such as stress tolerance.

Keywords: Ca2+; cADPR; nitric oxide; protein kinases; signalling; SnRK2

Journal Article.  5303 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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