OsA2

| Categories genes  | Tags nitrogen  growth  shoot  grain  grain yield  yield  plasma membrane  nitrate 
  • Information
  • Publication

  • Genbank accession number

  • Key message
    • Silencing the Oryza sativa plasma membrane H +-ATPase isoform OsA2 affects grain yield and shoot growth and decreases nitrogen concentration
    • We investigated the role that the OsA2 isoform plays in the total N and growth of rice (Oryza sativa)
    • Three osa2 lines and control plants (transformed with an empty IRS154 vector and named IRS) were cultivated in the greenhouse to evaluate grain and shoot production
    • In the greenhouse experiments, compared with the IRS plants, the osa2 lines had lower shoot fresh weights, grain yields and SPAD values
    • These results indicate that the specific PM H+-ATPase isoform OsA2 affects the net flux of NO3-, N concentration, and grain yield
    • There are 10 PM H+-ATPase isoforms in the rice genome (OsA1-OsA10), and OsA2 is highly responsive to nitrate (NO3-)
  • Connection
    • OsA2, OSA7~osAHA7~AHA7~LMPA, [Isoforms of plasma membrane H+-ATPase in rice root and shoot are differentially induced by starvation and resupply of NO₃⁻ or NH<82><U+383C><U+3E34>+.](http://www.ncbi.nlm.nih.gov/pubmed?term=Isoforms of plasma membrane H+-ATPase in rice root and shoot are differentially induced by starvation and resupply of NO₃⁻ or NH<82><U+383C><U+3E34>+.%5BTitle%5D), Resupply of NO₃⁻ resulted in induction of the following PM H+-ATPase isoforms, OsA1, OsA2, OsA5 and OsA7 in the shoots and OsA2, OsA5, OsA7 and OsA8 in the roots
    • OsA2, OSA7~osAHA7~AHA7~LMPA, [Isoforms of plasma membrane H+-ATPase in rice root and shoot are differentially induced by starvation and resupply of NO₃⁻ or NH<82><U+383C><U+3E34>+.](http://www.ncbi.nlm.nih.gov/pubmed?term=Isoforms of plasma membrane H+-ATPase in rice root and shoot are differentially induced by starvation and resupply of NO₃⁻ or NH<82><U+383C><U+3E34>+.%5BTitle%5D), PM H+-ATPase isoforms OsA2 and OsA7 displayed the strongest induction in response to N resupply, therefore indicating that these genes could be involved in N uptake in rice

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