Molecular and functional regulation of two NO3- uptake systems by N- and C-status of Arabidopsis plants.

@article{Lejay1999MolecularAF,
  title={Molecular and functional regulation of two NO3- uptake systems by N- and C-status of Arabidopsis plants.},
  author={Laurence Lejay and Pascal Tillard and Marc Lepetit and Fr{\'e}d{\'e}ric Olive and Sophie Filleur and Françoise Daniel-Vedele and Alain Gojon},
  journal={The Plant journal : for cell and molecular biology},
  year={1999},
  volume={18 5},
  pages={509-19}
}
Root NO3- uptake and expression of two root NO3- transporter genes (Nrt2;1 and Nrt1) were investigated in response to changes in the N- or C-status of hydroponically grown Arabidopsis thaliana plants. Expression of Nrt2;1 is up-regulated by NO3 - starvation in wild-type plants and by N-limitation in a nitrate reductase (NR) deficient mutant transferred to NO3- as sole N source. These observations show that expression of Nrt2;1 is under feedback repression by N-metabolites resulting from NO3… CONTINUE READING
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