Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 64, Issue 12, Pages 3551-3566Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/ert192
Keywords
Abscisic acid; calcium; environmental factors; guard cell signalling pathway; hydrogen peroxide; nitric oxide; secondary messengers; stomata; vapour pressure deficit
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Funding
- Ministry of Science, Research and Technology of Iran [24/88100010]
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The response of stomata to many environmental factors is well documented. Multiple signalling pathways for abscisic acid (ABA)-induced stomatal closure have been proposed over the last decades. However, it seems that exposure of a leaf for a long time (several days) to some environmental conditions generates a sort of memory in the guard cells that results in the loss of suitable responses of the stomata to closing stimuli, such as desiccation and ABA. In this review paper we discuss changes in the normal pattern of signal transduction that could account for disruption of guard cell signalling after long-term exposure to some environmental conditions, with special emphasis on long-term low vapour pressure deficit (VPD).
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