title: The role of brassinosteroids and abscisic acid in stomatal development.
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.
authors.affiliation: Facultad de Ciencias Ambientales y Bioquímica, Universidad de Castilla-La Mancha, E-45071 Toledo, Spain. Electronic address: laura.serna@uclm.es.
authors.forename: Laura
authors.initials: L
authors.lastname: Serna
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism*; D017360:Arabidopsis / Q000254:growth & development / Q000378:metabolism*; D060406:Brassinosteroids / Q000378:metabolism*; D018548:Cotyledon / Q000378:metabolism; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000378:metabolism; D054046:Plant Stomata / Q000254:growth & development*
chemical_list: D060406:Brassinosteroids; D010937:Plant Growth Regulators; D000040:Abscisic Acid; D020928:Mitogen-Activated Protein Kinases
keywords: Abscisic acid; Brassinosteroids; Development; MAP kinases; Stomata