Evidence that L-glutamate can act as an exogenous signal to modulate root growth and branching in Arabidopsis thaliana.

@article{WalchLiu2006EvidenceTL,
  title={Evidence that L-glutamate can act as an exogenous signal to modulate root growth and branching in Arabidopsis thaliana.},
  author={Pia Walch-Liu and Lai-Hua Liu and Tony Remans and Mark Tester and Brian G Forde},
  journal={Plant & cell physiology},
  year={2006},
  volume={47 8},
  pages={
          1045-57
        }
}
The roots of many plant species are known to use inorganic nitrogen, in the form of , as a cue to initiate localized root proliferation within nutrient-rich patches of soil. We report here that, at micromolar concentrations and in a genotype-dependent manner, exogenous l-glutamate is also able to elicit complex changes in Arabidopsis root development. l-Glutamate is perceived specifically at the primary root tip and inhibits mitotic activity in the root apical meristem, but does not interfere… CONTINUE READING

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