Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/43534
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Type: Journal article
Title: HKT1;5-like cation transporters linked to Na+ exclusion loci in wheat Nax2 and Kna1
Author: Byrt, C.
Platten, J.
Spielmeyer, W.
James, R.
Lagudah, E.
Dennis, E.
Tester, M.
Munns, R.
Citation: Plant Physiology, 2007; 143(4):1918-1928
Publisher: Amer Soc Plant Physiologists
Issue Date: 2007
ISSN: 0032-0889
1532-2548
Statement of
Responsibility: 
Caitlin S. Byrt, J. Damien Platten, Wolfgang Spielmeyer, Richard A. James, Evans S. Lagudah, Elizabeth S. Dennis, Mark Tester and Rana Munns
Abstract: Bread wheat (Triticum aestivum) has a greater ability to exclude Na+ from its leaves and is more salt tolerant than durum wheat (Triticum turgidum L. subsp. durum [Desf.]). A novel durum wheat, Line 149, was found to contain a major gene for Na+ exclusion, Nax2, which removes Na+ from the xylem in the roots and leads to a high K+-to-Na+ ratio in the leaves. Nax2 was mapped to the distal region on chromosome 5AL based on linkage to microsatellite markers. The Nax2 locus on 5AL coincides with the locus for a putative Na+ transporter, HKT1;5 (HKT8). The Nax2 region on 5AL is homoeologous to the region on chromosome 4DL containing the major Na+ exclusion locus in bread wheat, Kna1. A gene member of the HKT1;5 family colocates to the deletion bin containing Kna1 on chromosome 4DL. This work provides evidence that Nax2 and Kna1 are strongly associated with HKT1;5 genes.
Keywords: Triticum
Cations
Sodium
Cation Transport Proteins
Symporters
Plant Proteins
DNA Primers
Reverse Transcriptase Polymerase Chain Reaction
Ion Transport
Base Sequence
Polyploidy
Alleles
Genes, Plant
Molecular Sequence Data
Genetic Variation
Oryza
Description: © 2007 American Society of Plant Biologists
DOI: 10.1104/pp.106.093476
Appears in Collections:Agriculture, Food and Wine publications
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