OsBOR4

2015-01-20 | Categories genes  | Tags pollen  floral  transporter  grain  reproductive  boron 

• Information
  • Symbol: OsBOR4
  • MSU: LOC_Os05g08430
  • RAPdb: Os05g0176800
• Publication
  • Roles of pollen-specific boron efflux transporter, OsBOR4, in the rice fertilization process, 2013, Plant Cell Physiol.
• Genbank accession number
  • DQ421409
• Key message
  • 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
• Connection

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