Gene Details:

• MSU gene ID: LOC_Os05g27930
• RAPdb gene ID: Os05g0346200
• Gene Symbol: OsDREB2B
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Transgenic Arabidopsis plants overexpressing OsDREB2B showed enhanced expression of DREB2A target genes and improved drought and heat-shock stress tolerance.
• These results suggest that OsDREB2B is a key gene that encodes a stress-inducible DREB2-type transcription factor that functions in stress-responsive gene expression in rice.
• Only OsDREB2A and OsDREB2B showed abiotic stress-inducible gene expression.
• Spatial expression analysis revealed that OsDREB2B was highly expressed in the leaf sheaths.
• Under exogenous GA(3) application, OsDREB2B expression was induced, and the length of the second leaf sheath of the OsDREB2B-OE lines recovered to that of the WT.
• In summary, our study suggests that OsDREB2B plays a negative role in rice growth and development by regulating GA metabolic gene expression, which is mediated by OsAP2-39 and OsWRKY21, thereby reducing GA content and rice plant height.
• OsDREB2B localized to the nucleus of the rice protoplast acted as a transcription activator and upregulated OsAP2-39 by directly binding to its promoter.

Function-related keywords:

• drought ,  transcription-factor ,  abiotic-stress ,  leaf ,  growth ,  development ,  sheath ,  nucleus ,  ga ,  height ,  plant-height ,  GA ,  transcription-activator

Literature:

• Comprehensive analysis of rice DREB2-type genes that encode transcription factors involved in the expression of abiotic stress-responsive genes .  DOI:  10.1007/s00438-009-0506-y ;  PMID:  20049613
• OsDREB2B, an AP2/ERF transcription factor, negatively regulates plant height by conferring GA metabolism in rice .  DOI:  10.3389/fpls.2022.1007811 ;  PMID:  36388558

Related News:

Gene Resources:

• NCBI ID: AK099221
• UniProt accessions:

Sequences: