OsCAF1B

• Symbol: OsCAF1B
• MSU: LOC_Os04g58810
• RAPdb: Os04g0684900

• A CCR4 association factor 1, OsCAF1B, participates in the αAmy3 mRNA polyA tail shortening and plays a role in germination and seedling growth., 2019, Plant Cell Physiol.
• A CCR4-associated factor 1, OsCAF1B, confers tolerance of low-temperature stress to rice seedlings, 2020, Plant Mol Biol.

Genbank accession number

• Additionally, we found that overexpression of OsCAF1B retards seed germination and seedling growth
• These findings indicate that OsCAF1B participates in sugar-induced αAmy3 mRNA degradation and deadenylation, and acts a negative factor for germination and seedling development
• The enhancement of cold tolerance by OsCAF1B in transgenic rice seedlings involved OsCAF1B deadenylase gene expression, and was associated with elevated expression of late-response cold-related transcription factor genes
• Our results demonstrate that OsCAF1B plays an important role in growth and development of rice seedlings at low temperatures
• The increased survival percentage and reduced electrolyte leakage exhibited by OsCAF1B overexpression transgenic lines subjected to cold stress indicate that OsCAF1B plays a positive role in rice growth under low ambient temperature
• In the present study, we investigated the function of OsCAF1B in rice by characterizing the molecular and physiological responses to cold stress in OsCAF1B overexpression lines and dominant-negative mutant lines
• The results reveal a hitherto undiscovered function of OsCAF1B deadenylase gene expression, which is required for adaptation to cold stress in rice