A Cytosolic Protein Kinase STY46 in Arabidopsis thaliana is Involved in Plant Growth and Abiotic Stress Response.

ABSTRACT: Starch provides plants with carbon and energy during stressful periods; however, relatively few regulators of starch metabolism under stress-induced carbon starvation have been discovered. We studied a protein kinase Ser/Thr/Tyr (STY) 46, identified by gene co-expression network analysis as a potential regulator of the starch starvation response in Arabidopsis thaliana. We showed that STY46 was induced by (1) abscisic acid and prolonged darkness, (2) by abiotic stressors, including salinity and osmotic stress, and (3) by conditions associated with carbon starvation. Characterization of STY46 T-DNA knockout mutants indicated that there was functional redundancy among the STY gene family, as these genotypes did not show strong phenotypes. However, Arabidopsis with high levels of STY46 transc

SUBMITTER: Dong S 

PROVIDER: S-EPMC7020404 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature