Gene Details:

• MSU gene ID: LOC_Os08g03682
• RAPdb gene ID: Os08g0131100
• Gene Symbol: CYP703A3
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Together, these results suggest that GA regulates exine formation and the PCD of tapetal cells and that direct activation of CYP703A3 by GAMYB is key to exine formation.
• Identification of CYP703A3-3 and analysis of regulatory role of CYP703A3 in rice anther cuticle and pollen exine development.
• Collectively, our results further elaborated CYP703A3 plays vital role in anther cuticle and pollen exine development in rice (Oryza sativa L.
• Sequence analysis detected three bases (GAA) deletion in the first exon of LOC_Os08g03682, annotated as CYP703A3 with homologous sequences related to male sterility in Arabidopsis, causing the Asparagine deletion in the mutant site.
• Results of qPCR suggested CYP703A3 mainly expressed in anthers with greatest abundance at microspore stage, and genes involved in sporopollenin precursors formation and transportation, such as GAMYB, TDR, CYP704B2, DPW2, OsABCG26 and OsABCG15, were significantly reduced in CYP703A3-3.

Function-related keywords:

• ga ,  tapetal ,  pollen ,  anther ,  sterility ,  development ,  cuticle ,  microspore ,  male-sterility

Literature:

• Gibberellin modulates anther development in rice via the transcriptional regulation of GAMYB .  DOI:  10.1105/tpc.108.062935 ;  PMID:  19454733
• Identification of cyp703a3-3 and analysis of regulatory role of CYP703A3 in rice anther cuticle and pollen exine development .  DOI:  10.1016/j.gene.2018.01.058 ;  PMID:  29355682
• A novel strategy for creating a new system of third‐generation hybrid rice technology using a cytoplasmic sterility gene and a genic male‐sterile gene .  DOI:  10.1111/pbi.13457 ;  PMID:  32741081
• OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice .  DOI:  10.1186/s12284-020-00451-y ;  PMID:  33409767

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: