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Literature summary for 7.3.2.4 extracted from

  • Krouk, G.; Lacombe, B.; Bielach, A.; Perrine-Walker, F.; Malinska, K.; Mounier, E.; Hoyerova, K.; Tillard, P.; Leon, S.; Ljung, K.; Zazimalova, E.; Benkova, E.; Nacry, P.; Gojon, A.
    Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants (2010), Dev. Cell, 18, 927-937.
    View publication on PubMed
Search for more literature for 7.3.2.4

Protein Variants

Protein Variants Comment Organism
additional information a line expressing the auxin-inducible DR5::GUS reporter gene is crossed with the chl1-5 knockout mutant for NRT1.1. Mutation of NRT1.1 does not affect expression of DR5::GUS in plants supplied with 1 mM NO3, but dramatically increases it in plants either grown in the absence of NO3- or supplied with a low external NO3- concentration. Absence of a functional NRT1.1 transporter prevents the decrease of DR5::GUS expression in response to removal or lowered supply of NO3-, leading to a high DR5 activity regardless of the presence of an N source, phenotype, overview Arabidopsis thaliana

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
 Arabidopsis thaliana 16020
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ATP + H2O + nitrate/out Arabidopsis thaliana
-
 ADP + phosphate + nitrate/in
-
 ?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
root primordia and young lateral roots Arabidopsis thaliana
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + H2O + nitrate/out
-
 Arabidopsis thaliana ADP + phosphate + nitrate/in
-
 ?

Synonyms

Synonyms Comment Organism
nitrate transporter
-
 Arabidopsis thaliana
NRT1.1
-
 Arabidopsis thaliana

General Information

General Information Comment Organism
metabolism NRT1.1 is involved in a mechanism connecting nutrient and hormone signaling during organ development, overview Arabidopsis thaliana
physiological function the NRT1.1 nitrate transporter is crucial for nitrate signaling governing root growth, and acts as a nitrate sensor. NRT1.1 also facilitates uptake of the phytohormone auxin. Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Mutation of NRT1.1 enhances both auxin accumulation in lateral roots and growth of these roots at low, but not high, nitrate concentration. NRT1.1 represses lateral root growth at low nitrate availability by promoting basipetal auxin transport out of these roots NRT1.1, mechanism, overview Arabidopsis thaliana