A Dof transcription factor, SCAP1, is essential for the development of functional stomata in Arabidopsis.

ABSTRACT: Stomata are highly specialized organs that consist of pairs of guard cells and regulate gas and water vapor exchange in plants [1-3]. Although early stages of guard cell differentiation have been described [4-10] and were interpreted in analogy to processes of cell type differentiation in animals [11], the downstream development of functional stomatal guard cells remains poorly understood. We have isolated an Arabidopsis mutant, stomatal carpenter 1 (scap1), that develops irregularly shaped guard cells and lacks the ability to control stomatal aperture, including CO2-induced stomatal closing and light-induced stomatal opening. SCAP1 was identified as a plant-specific Dof-type transcription factor expressed in maturing guard cells, but not in guard mother cells. SCAP1 regulates the expressi

SUBMITTER: Negi J 

PROVIDER: S-EPMC4039172 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature