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The role of brassinosteroids and abscisic acid in stomatal development

Author:
Serna, Laura
Source:
Plant science 2014 v.225 pp. 95-101
ISSN:
0168-9452
Subject:
Arabidopsis, abscisic acid, brassinosteroids, cotyledons, gas exchange, leaves, mitogen-activated protein kinase, proteins, seeds, stomata, stomatal movement
Abstract:
Gas exchange with the atmosphere is regulated through the stomata. This process relies on both the degree and duration of stomatal opening, and the number and patterning of these structures in the plant surface. Recent work has revealed that brassinosteroids and abscisic acid (ABA), which control stomatal opening, also repress stomatal development in cotyledons and leaves of at least some plants. It is speculated that, in Arabidopsis, these phytohormones control the same steps of this developmental process, most probably, through the regulation of the same mitogen-activated protein (MAP) kinase module. The conservation, in seeds plants, of components downstream of this module with MAP kinase target domains, suggests that these proteins are also regulated by these cascades, which, in turn, may be regulated by brassinosteroids and/or ABA.
Agid:
5412313