Gene Details:

• MSU gene ID: LOC_Os05g08430
• RAPdb gene ID: Os05g0176800
• Gene Symbol: OsBOR4
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Quantitative PCR analysis and OsBOR4 promoter-green fluorescent protein (GFP) fusion revealed that OsBOR4 was both highly and specifically expressed in pollen.
• The pollen grains were viable and development of floral organs was normal in the homozygous OsBOR4 mutants.
• Pollen from OsBOR4 homozygous plants elongated fewer tubes on wild-type stigmas, and tube elongation of mutant pollen was less efficient compared with the wild-type pollen, suggesting reduced competence of OsBOR4 mutant pollen.
• The reduced competence of mutant pollen was further supported by the crosses of independent Tos17-inserted alleles of OsBOR4.
• Our results suggest that OsBOR4, a boron efflux transporter, is required for normal pollen germination and/or tube elongation.
• Roles of pollen-specific boron efflux transporter, OsBOR4, in the rice fertilization process.
• OsBOR4 is an active efflux transporter of B.
• These results establish that OsBOR4 is essential for normal reproductive processes.

Function-related keywords:

• pollen ,  floral ,  transporter ,  grain ,  reproductive ,  boron

Literature:

• Roles of pollen-specific boron efflux transporter, OsBOR4, in the rice fertilization process .  DOI:  10.1093/pcp/pct136 ;  PMID:  24068795

Related News:

Gene Resources:

• NCBI ID: DQ421409
• UniProt accessions:

Sequences: