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Literature summary for 7.3.2.4 extracted from

  • Fan, S.C.; Lin, C.S.; Hsu, P.K.; Lin, S.H.; Tsay, Y.F.
    The Arabidopsis nitrate transporter NRT1.7, expressed in phloem, is responsible for source-to-sink remobilization of nitrate (2009), Plant Cell, 21, 2750-2761.
    View publication on PubMedView publication on EuropePMC
Search for more literature for 7.3.2.4

Localization

Localization Comment Organism GeneOntology No. Textmining
plasma membrane subcellular localization study, overview Arabidopsis thaliana 5886
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Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Arabidopsis thaliana NRT1.7 is involved in nitrate remobilization from the old leaf ?
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 ?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
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 isozyme Nrt1.7
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Source Tissue

Source Tissue Comment Organism Textmining
leaf NRT1.7 is expressed in the phloem of the leaf minor vein. NRT1.7 is predominantly expressed in old leaves Arabidopsis thaliana
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additional information expression of NRT1.7 is diurnally regulated, quantitative RT-PCR analysis of NRT1.7 expression, overview Arabidopsis thaliana
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phloem NRT1.7 is expressed in the phloem of the leaf minor vein Arabidopsis thaliana
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information NRT1.7 is involved in nitrate remobilization from the old leaf Arabidopsis thaliana ?
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 ?

Synonyms

Synonyms Comment Organism
nitrate transporter
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 Arabidopsis thaliana
NRT1.7
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 Arabidopsis thaliana

General Information

General Information Comment Organism
additional information in nrt1.7 mutants, more nitrate is present in the older leaves, less 15NO3- spotted on old leaves is remobilized into N-demanding tissues, and less nitrate is detected in the phloem exudates of old leaves. Nrt1.7 mutants show growth retardation when external nitrogen is depleted Arabidopsis thaliana
physiological function NRT1 transporter NRT1.7 is a low-affinity nitrate transporter, and involved in nitrate remobilization from the old leaf. Internal nitrate remobilization between leaves was important for plants to cope with nitrogen deficiency and the importance of enhanced nitrogen use efficiency for maximum growth. And NRT1.7 is responsible for phloem loading of nitrate in the source leaf to allow nitrate transport out of older leaves and into younger leaves Arabidopsis thaliana