Gene Details:

• MSU gene ID: LOC_Os06g03860
• RAPdb gene ID: Os06g0129400
• Gene Symbol: OsSPX-MFS3 OsPSS3
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• • Transcript analyses revealed that members of the SPX-MFS family were mainly expressed in the shoots, with OsSPX-MFS1 and OsSPX-MFS3 being suppressed by Pi deficiency, while OsSPX-MFS2 was induced.
• We conclude that OsSPX-MFS3 is a low affinity Pi transporter that mediates Pi efflux from the vacuole into cytosol and is coupled to proton movement.
• In contrast to tonoplast localization in plants cells, OsSPX-MFS3 was localised to the plasma membrane when expressed in both yeast and oocytes.
• At high external Pi concentration, OsSPX-MFS3 could partially complement the yeast (Saccharomyces cerevisiae) mutant strain EY917 under pH 5.
• In oocytes, OsSPX-MFS3 was shown to facilitate Pi influx or efflux depending on the external pH and Pi concentrations.
• Overexpression of OsSPX-MFS3 results in decreased Pi concentration in the vacuole of rice (Oryza sativa) tissues.

Function-related keywords:

• shoot ,  pi ,  transporter ,  plasma-membrane ,  Pi

Literature:

• Functional characterization of the rice SPX-MFS family reveals a key role of OsSPX-MFS1 in controlling phosphate homeostasis in leaves .  DOI:  10.1111/j.1469-8137.2012.04227.x ;  PMID:  22803610
• Rice SPX-Major Facility Superfamily3, a Vacuolar Phosphate Efflux Transporter, Is Involved in Maintaining Phosphate Homeostasis in Rice .  DOI:  10.1104/pp.15.01005 ;  PMID:  26424157

Related News:

Gene Resources:

• NCBI ID: AK243620
• UniProt accessions:

Sequences: