- Information
- Symbol: OsBBX14
- MSU: LOC_Os05g11510
- RAPdb: Os05g0204600
- Publication
- OsBBX14 delays heading date by repressing florigen gene expression under long and short-day conditions in rice, 2016, Plant Science.
- A Rice B-Box Protein, OsBBX14, Finely Regulates Anthocyanin Biosynthesis in Rice., 2018, Int J Mol Sci.
- OsBBX14 promotes photomorphogenesis in rice by activating OsHY5L1 expression under blue light conditions., 2019, Plant Sci.
- Transcriptional and post-transcriptional regulation of heading date in rice, 2020, New Phytol.
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Genbank accession number
- Key message
- OsBBX14 is highly expressed in flag leaf blades
- Thus, OsBBX14 acts as a floral repressor by promoting Hd1 expression under LD conditions, probably because of crosstalk with the circadian clock
- OsBBX14 delays heading date by repressing florigen gene expression under long and short-day conditions in rice
- OsBBX14-overexpression (OsBBX14-OX) lines exhibited delayed heading date under long-day (LD) and short-day (SD) conditions, whereas RNAi lines of OsBBX14 lines had similar heading dates to the WT
- Our findings suggested that OsBBX14 regulates heading date differently under LD and SD conditions
- OsBBX14 is located in the nucleus and has transcriptional activation potential
- The ectopic expression of OsBBX14 in Arabidopsis resulted in a dramatic increase in anthocyanin accumulation in its seedlings
- The OsBBX14-overexpressing (OsBBX14-OX) seedlings were hypersensitive to light, especially blue light, and exhibited dwarfism, while the OsBBX14 knock-out plants (osbbx14) were taller than wild-type plants under blue light
- Collectively, in response to blue light, OsBBX14 promotes photomorphogenesis, probably by directly or indirectly regulating the expression of HY5L1 or other genes related to cell wall organization and dwarfism
- Connection
- Ehd1, OsBBX14, OsBBX14 delays heading date by repressing florigen gene expression under long and short-day conditions in rice, Under SD conditions, Ehd1 expression was reduced in OsBBX14-OX lines, but Hd1 and circadian clock gene expressions were unaffected, indicating that OsBBX14 acts as a repressor of Ehd1
- Hd1, OsBBX14, OsBBX14 delays heading date by repressing florigen gene expression under long and short-day conditions in rice, Thus, OsBBX14 acts as a floral repressor by promoting Hd1 expression under LD conditions, probably because of crosstalk with the circadian clock
- Hd1, OsBBX14, OsBBX14 delays heading date by repressing florigen gene expression under long and short-day conditions in rice, Under SD conditions, Ehd1 expression was reduced in OsBBX14-OX lines, but Hd1 and circadian clock gene expressions were unaffected, indicating that OsBBX14 acts as a repressor of Ehd1
- OsBBX14, OsC1, A Rice B-Box Protein, OsBBX14, Finely Regulates Anthocyanin Biosynthesis in Rice., Using a steroid receptor-based inducible activation system, OsBBX14 and OsHY5 were found to directly activate OsC1 or OsB2 in an independent or collaborative manner
- OsBBX14, OsCRY2~CRY2, OsBBX14 promotes photomorphogenesis in rice by activating OsHY5L1 expression under blue light conditions., LUC complementation imaging (LCI) results suggested that OsBBX14 had physical interaction with OsCRY2 protein
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