McAinsh, Martin and Gray, Julie E. and Hetherington, Alistair M. and Leckie, Callum P. and Ng, Carl K.-Y. (2000) Calcium signalling in stomatal cell guards. Biochemical Society Transactions, 28 (4). pp. 476-481. ISSN 0300-5127Full text not available from this repository.
Ca2+ is a ubiquitous second messenger in the signal transduction pathway(s) by which stomatal guard cells respond to external stimuli. Increases in guard-cell cytosolic free Ca2+ concentration ([Ca2+]cyt) have been observed in response to stimuli that cause both stomatal opening and closure. In addition, several important components of Ca2+-based signalling pathways have been identified in guard cells, including the cADP-ribose and phospholipase C/Ins(1,4,5)P3-mediated Ca2+-mobilizing pathways. The central role of stimulus-induced increases in [Ca2+]cyt in guard-cell signal transduction has been clearly demonstrated in experiments examining the effects of modulating increases in [Ca2+]cyt on alterations in guard-cell turgor or the activity of ion channels that act as effectors in the guard-cell turgor response. In addition, the paradox that Ca2+ is involved in the transduction of signals that result in opposite end responses (stomatal opening and closure) might be accounted for by the generation of stimulus-specific Ca2+ signatures, such that increases in [Ca2+]cyt exhibit unique spatial and temporal characteristics.
|Journal or Publication Title:||Biochemical Society Transactions|
|Uncontrolled Keywords:||calcium signalling ; stomata ; specificity.|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
Faculty of Science and Technology > Engineering
|Deposited By:||Dr Martin R McAinsh|
|Deposited On:||20 May 2008 11:37|
|Last Modified:||26 Jul 2012 18:29|
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