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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 |
Published version: | http://dx.doi.org/10.1104/pp.106.093476 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 6 |
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