FvMYB44, a Strawberry R2R3-MYB Transcription Factor, Improved Salt and Cold Stress Tolerance in Transgenic Arabidopsis

MYB (v-MYB avian myeloblastosis viral oncogene homolog) transcription factor (TF) family has numerous members with complex and diverse functions, which perform an integral role in regulating the plant’s response to adversity. This study used cloning obtain a novel TF gene from diploid strawberry Fragaria vesca, was given designation FvMYB44. Subcellular localization results showed that protein of FvMYB44 nuclear protein. The resistance Arabidopsis thaliana salt low temperature stresses greatly enhanced by overexpression When subjected stress, transgenic plants higher proline chlorophyll concentrations superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) activities than wild-type (WT) unloaded line (UL) A. thaliana. In contrast, WT UL lines had malondialdehyde (MDA) content reactive oxygen species ROS (O2− H2O2) content. These findings suggest may controlling cold stress.