Suppression of ASKβ (AtSK32), a Clade III Arabidopsis GSK3, Leads to the Pollen Defect during Late Pollen Development.

ABSTRACT: Arabidopsis Shaggy-like protein kinases (ASKs) are Arabidopsis thaliana homologs of glycogen synthase kinase 3/SHAGGY-like kinases (GSK3/SGG), which are comprised of 10 genes with diverse functions. To dissect the function of ASKβ (AtSK32), ASKβ antisense transgenic plants were generated, revealing the effects of ASKβ down-regulation in Arabidopsis. Suppression of ASKβ expression specifically interfered with pollen development and fertility without altering the plants' vegetative phenotypes, which differed from the phenotypes reported for Arabidopsis plants defective in other ASK members. The strength of these phenotypes showed an inverse correlation with the expression levels of ASKβ and its co-expressed genes. In the aborted pollen of ASKβ antisense plants, loss of nuclei and shrunken cy

SUBMITTER: Dong X 

PROVIDER: S-EPMC4469908 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature