A toggle switch in plant nitrate uptake

Cell. 2009 Sep 18;138(6):1064-6. doi: 10.1016/j.cell.2009.09.005.


In plants, the uptake of nitrate from the soil is a critical process controlled by complex regulatory networks that target nitrate transporters in the roots. In this issue, Ho et al. (2009) show that phosphorylation of the CHL1 nitrate transporter allows the plant root to sense and respond to different nitrate concentrations in the soil.

Publication types

  • Comment
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anion Transport Proteins / metabolism
  • Arabidopsis / metabolism*
  • Biological Transport / genetics
  • Nitrates / metabolism*
  • Phosphorylation
  • Plant Proteins / metabolism
  • Plant Roots / metabolism


  • Anion Transport Proteins
  • NRT1.1 protein, Arabidopsis
  • Nitrates
  • Plant Proteins