Skip to main content

Research Repository

Advanced Search

Basal stomatal aperture is regulated by GA-DELLAs in Arabidopsis

Sukiran, Nur Afiqah; Steel, Patrick Giles; Knight, Marc Robert

Basal stomatal aperture is regulated by GA-DELLAs in Arabidopsis Thumbnail


Nur Afiqah Sukiran


Stomatal aperture is tightly regulated in order to achieve the best compromise between gas exchange and water conservation. Steady-state (basal) stomatal aperture is therefore understandably a key component in plant fitness. It has been shown previously in tomato that DELLA proteins act as positive regulators of closure of stomata, and their action is enhanced by the hormone ABA, which is itself important in mediating drought stress tolerance. DELLAs are regulated by a variety of signals which promote plant growth, most notably the hormones gibberellins, which have been shown to promote stomatal opening. We have found that DELLA proteins are also used in Arabidopsis for regulating basal stomatal aperture. We also discovered that the perception of endogenous gibberellins via the GID1 receptors is necessary for optimal basal stomatal aperture.


Sukiran, N. A., Steel, P. G., & Knight, M. R. (2020). Basal stomatal aperture is regulated by GA-DELLAs in Arabidopsis. Journal of Plant Physiology, 250, Article 153182.

Journal Article Type Article
Acceptance Date Apr 21, 2020
Online Publication Date May 11, 2020
Publication Date Jul 31, 2020
Deposit Date May 12, 2020
Publicly Available Date May 11, 2021
Journal Journal of Plant Physiology
Print ISSN 0176-1617
Electronic ISSN 1618-1328
Publisher Elsevier
Peer Reviewed Not Peer Reviewed
Volume 250
Article Number 153182


You might also like

Downloadable Citations