Skip to main content
eScholarship
Open Access Publications from the University of California

How rice Glycogen Synthase Kinase-like 5 (OsGSK5) integrates salinity stress response to source-sink adaptation: A proposed model

  • Author(s): Thitisaksakul, M
  • Dong, S
  • Beckles, DM
  • et al.
Abstract

We have previously shown that overexpression of GSK3-like kinase 5 in rice (OsGSK5) was associated with higher starch accumulation and better growth under severe salinity stress. Short-term 14CO2 feeding experiments suggested that OsGSK5 promoted higher flux to starch accumulation in the roots under this condition and that this mechanism may help to underscore the better growth characteristics observed. Here, we expand upon this hypothesis and consider (1) how OsGSK5 action could fit into a signaling model that integrates salinity stress to changes in starch metabolism, and (2) how this would facilitate whole plant physiological adaptations in source-to-sink partitioning. We also discuss additional functions of OsGSK5, necessary to support this adaptive mechanism.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View