Allelic differences in Medicago truncatula NIP/LATD mutants correlate with their encoded proteins’ transport activities in planta

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This article examines the hypothesis that MtNIP/LATD may have another biochemical activity.

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5 p.

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Salehin, Mohammad; Huang, Ying-Sheng; Bagchi, Rammyani; Sherrier, D. Janine & Dickstein, Rebecca November 15, 2012.

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This article examines the hypothesis that MtNIP/LATD may have another biochemical activity.

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5 p.

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Abstract: Medicago truncatula NIP/LATD gene, required for symbiotic nitrogen fixing nodule and root architecture development, encodes a member of the NRT1(PTR) family that demonstrates high-affinity nitrate transport in Xenopus laevis oocytes. Of three Mtnip/latd mutant proteins, one retains high-affinity nitrate transport in oocytes, while the other two are nitrate-transport defective. To further examine the mutant proteins’ transport properties, the missense Mtnip/latd alleles were expressed in Arabidopsis thaliana chl1-5, resistant to the herbicide chlorate because of a deletion spanning the nitrate transporter AtNRT1.1(CHL1) gene. Mtnip-3 expression restored chlorate sensitivity in the Atchl1-5 mutant, similar to wild type MtNIP/LATD, while Mtnip-1 expression did not. The high-affinity nitrate transporter AtNRT2.1 gene was expressed in Mtnip-1 mutant roots; it did not complement, which could be caused by several factors. Together, these findings support the hypothesis that MtNIP/LATD may have another biochemical activity.

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  • Plant Signaling & Behavior, 2013. New York, NY: Taylor & Francis

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  • Publication Title: Plant Signaling & Behavior
  • Volume: 8
  • Issue: 2
  • Pages: 1-5
  • Peer Reviewed: Yes

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  • October 2, 2012

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  • November 6, 2012

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  • November 15, 2012

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  • March 29, 2018, 10:10 p.m.

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Salehin, Mohammad; Huang, Ying-Sheng; Bagchi, Rammyani; Sherrier, D. Janine & Dickstein, Rebecca. Allelic differences in Medicago truncatula NIP/LATD mutants correlate with their encoded proteins’ transport activities in planta, article, November 15, 2012; New York, New York. (https://digital.library.unt.edu/ark:/67531/metadc1115863/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.