AtPTR1, a plasma membrane peptide transporter expressed during seed germination and in vascular tissue of <i>Arabidopsis</i>

Dietrich, Daniela; Hammes, Ulrich Z.; Thor, Kathrin; Suter-Grotemeyer, Marianne; Flückiger, Ricardo; Slusarenko, Alan; Ward, John M.; Rentsch, Doris

doi:10.1111/j.1365-313x.2004.02224.x

Cited by 83 publications

(116 citation statements)

References 58 publications

(129 reference statements)

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“…Transient expression analysis of a GFP fusion indicated that AtPTR1 is a plasma membrane protein and GUS staining analysis revealed strong expression of AtPTR1 in vascular tissue throughout the plant, indicating a role in long-distance peptide transport [21].…”

Section: Dipeptide Transporters In the Nrt1(ptr) Familymentioning

confidence: 99%

“…BnNRT1-2 from Brassica transports nitrate and histidine with similar K m s (both in the mM range), but different pH dependencies [17]. AtPTR1 and AtPTR2 are high-affinity dipeptide transporters with low-affinity, low-capacity histidine transport activity [14,21]. RnPHT1 therefore transports dipeptide and histidine with equal efficiency, but AtPTR1 and AtPTR2 transport dipeptide much more efficiently than histidine.…”

Section: Other Substrates and Potential Substrates Of The Nrt1(ptr) Tmentioning

confidence: 99%

“…Nitrate transporters are found in all four groups. On the other hand, using yeast and/or Xenopus oocytes for functional studies, three of the plant NRT1(PTR) genes (AtPTR2 [8,14,20], HvPTR1 [18], and AtPTR1 [21]) were found to encode peptide transporters. All three belong to a cluster in group II (Fig.…”

Section: Nrt1(ptr) Family In Arabidopsis and Ricementioning

confidence: 99%

“…Subsequently, AtPTR1 (At3g54140), which mediates the uptake of di-and tripeptides, was also identified by heterologous complementation of a yeast peptide transport-deficient mutant and found to recognize not only a wide spectrum of naturally occurring di-and tripeptides, but also the modified tripeptide, phaseolotoxin, and substrates lacking peptide bonds [21]. Transient expression analysis of a GFP fusion indicated that AtPTR1 is a plasma membrane protein and GUS staining analysis revealed strong expression of AtPTR1 in vascular tissue throughout the plant, indicating a role in long-distance peptide transport [21].…”

Section: Dipeptide Transporters In the Nrt1(ptr) Familymentioning

confidence: 99%

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Nitrate transporters and peptide transporters

et al. 2007

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In higher plants, two types of nitrate transporters, NRT1 and NRT2, have been identified. In Arabidopsis, there are 53 NRT1 genes and 7 NRT2 genes. NRT2 are high-affinity nitrate transporters, while most members of the NRT1 family are low-affinity nitrate transporters. The exception is CHL1 (AtNRT1.1), which is a dual-affinity nitrate transporter, its mode of action being switched by phosphorylation and dephosphorylation of threonine 101. Two of the NRT1 genes, CHL1 and AtNRT1.2, and two of the NRT2 genes, AtNRT2.1 and AtNRT2.2, are known to be involved in nitrate uptake. In addition, AtNRT1.4 is required for petiole nitrate storage. On the other hand, some members of the NRT1 family are dipeptide transporters, called PTRs, which transport a broad spectrum of di/tripeptides. In barley, HvPTR1, expressed in the plasma membrane of scutellar epithelial cells, is involved in mobilizing peptides, produced by hydrolysis of endosperm storage protein, to the developing embryo. In higher plants, there is another family of peptide transporters, called oligopeptide transporters (OPTs), which transport tetra/pentapeptides. In addition, some OPTs transport GSH, GSSH, GSH conjugates, phytochelatins, and metals.

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Section: Dipeptide Transporters In the Nrt1(ptr) Familymentioning

confidence: 99%

Section: Other Substrates and Potential Substrates Of The Nrt1(ptr) Tmentioning

confidence: 99%

Section: Nrt1(ptr) Family In Arabidopsis and Ricementioning

confidence: 99%

Section: Dipeptide Transporters In the Nrt1(ptr) Familymentioning

confidence: 99%

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Nitrate transporters and peptide transporters

et al. 2007

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“…A PTR1 transporter mediating the uptake of di-and tripeptides from Arabidopsis thaliana was shown to be expressed in the vascular tissue throughout the plant, indicative of a role in long-distance transport of di-and tripeptides [25].…”

Section: Gene H and Disease Resistancementioning

confidence: 99%

Characterisation of Gene H in Red Raspberry: Explaining its Role in Cane Morphology, Disease Resistance and Timing of Fruit Ripening

S¹,

M²

2015

Horticulture

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The Gene H region on raspberry linkage group 2 is an interesting region associated with a number of diverse traits. Cane pubescence is determined by Gene H and cultivars and selections with fine hairs (pubescent canes) are more resistant to cane botrytis and spur blight than non-hairy ones. Gene H is the most significant marker in a QTL on Linkage Group (LG) 2 that control cane pubescence and disease resistances and has also been demonstrated to delay ripening. Gene H phenotype for disease resistance is now used as a visual marker in resistance breeding. This study set out to explain the role of Gene H by characterising gene content in this region through identifying and sequencing BAC clones spanning the region to explain the phenotypic effects on cane hairiness, disease resistance and timing of ripening. This has allowed us to propose that PDF2/GLABROUS2 is Gene H and has also provided an insight into the effects the region has on ripening and disease resistance.

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Transporters Involved in Nitrogen Uptake and Movement

Miller

Chapman

2011

The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops

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Families of nitrogen (N) transporters have been identifi ed in the model plantArabidopsis , and this template is useful for other species. For crops, uptake effi ciency is an important component of nitrogen use efficiency (NUE), which has been shown to vary widely between cultivars and species. The root is the most important organ for acquiring soil nitrogen, which is chiefl y available as NO 3 − , NH 4 + or amino acids. Soil nitrogen form and availability to roots is transient, and the concentrations can rapidly change in response to climatic factors. Although root architecture is undoubtedly a key trait for nitrogen acquisition effi ciency (see Chapter 2 ) and the rhizosphere infl uences availability (Chapter 3 ), the activity of root transporters is important for uptake. Roots have transporter systems to acquire the different nitrogen forms from the soil. Ammonium uptake is achieved by ammonium transporters (AMTs) and amino acids by several different families of transporters. Within the root, NO 3 − uptake and transport are realized by NO 3 − transporters (NRTs),

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AtPTR1, a plasma membrane peptide transporter expressed during seed germination and in vascular tissue of Arabidopsis

Cited by 83 publications

References 58 publications

Nitrate transporters and peptide transporters

Nitrate transporters and peptide transporters

Characterisation of Gene H in Red Raspberry: Explaining its Role in Cane Morphology, Disease Resistance and Timing of Fruit Ripening

Transporters Involved in Nitrogen Uptake and Movement

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