Developmental plasticity of Arabidopsis hypocotyl is dependent on exocyst complex function.

ABSTRACT: The collet (root-hypocotyl junction) region is an important plant transition zone between soil and atmospheric environments. Despite its crucial importance for plant development, little is known about how this transition zone is specified. Here we document the involvement of the exocyst complex in this process. The exocyst, an octameric tethering complex, participates in secretion and membrane recycling and is central to numerous cellular and developmental processes, such as growth of root hairs, cell expansion, recycling of PIN auxin efflux carriers and many others. We show that dark-grown Arabidopsis mutants deficient in exocyst subunits can form a hair-bearing ectopic collet-like structure above the true collet, morphologically resembling the true collet but also retaining some characte

SUBMITTER: Jankova Drdova E 

PROVIDER: S-EPMC6382343 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature