Switchgrass PvDREB1C plays opposite roles in plant cold and salt tolerance in transgenic tobacco.

ABSTRACT:

Background

The C-repeat-binding factors/DRE-binding factors (CBF/DREBs) comprise a key transcription factor family involved in plant stress tolerance. Yet, there is limited information about switchgrass DREB genes and their functional roles.

Results

In this study, four cold-inducible PvDREB1s were identified from switchgrass (Panicum virgatum), among which PvDREB1C was the one responded to cold stress later than the other three PvDREB1s. Yet, ectopic overexpression of PvDREB1C led to significantly compromised, instead of improved cold tolerance in transgenic tobacco. On the other hand, PvDREB1C was transcriptionally down-regulated in response to salt stress, but overexpression of PvDREB1C improved plant salt tolerance in trans

SUBMITTER: Wen W 

PROVIDER: S-EPMC5655823 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature