Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/61868
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Type: Journal article
Title: HvNax3-a locus controlling shoot sodium exclusion derived from wild barley (Hordeum vulgare ssp. spontaneum)
Author: Shavrukov, Y.
Gupta, N.
Miyazaki, J.
Baho, M.
Chalmers, K.
Tester, M.
Langridge, P.
Collins, N.
Citation: Functional and Integrative Genomics, 2010; 10(2):277-291
Publisher: Springer-Verlag
Issue Date: 2010
ISSN: 1438-793X
1438-7948
Statement of
Responsibility: 
Yuri Shavrukov, Narendra K. Gupta, Junji Miyazaki, Manahil N. Baho, Kenneth J. Chalmers, Mark Tester, Peter Langridge and Nicholas C. Collins
Abstract: Previous work identified the wild barley (Hordeum vulgare ssp. spontaneum) accession CPI-71284-48 as being capable of limiting sodium (Na+) accumulation in the shoots under saline hydroponic growth conditions. Quantitative trait locus (QTL) analysis using a cross between CPI-71284-48 and a selection of the cultivated barley (H. vulgare ssp. vulgare) cultivar Barque (Barque-73, a moderate Na+ excluder) attributed the control of the Na+ exclusion trait from CPI-71284-48 to a single locus on the short arm of chromosome 7H, which was named HvNax3. The locus reduced shoot Na+ accumulation by 10–25% in plants grown in 150 mM NaCl. Markers generated using colinearity with rice and Brachypodium, together with the analysis of introgression lines and F2 and F3 families, enabled HvNax3 to be mapped to a 1.3-cM interval. Genes from the corresponding rice and Brachypodium intervals encode 16 different classes of proteins and include several plausible candidates for HvNax3. The potential of HvNax3 to provide a useful trait contributing to salinity tolerance in cultivated barley is discussed.
Keywords: Sodium transport
Barley
H. vulgare ssp. Spontaneum
Salinity tolerance
Pyrophosphatase
Rights: Copyright Springer-Verlag 2010
DOI: 10.1007/s10142-009-0153-8
Grant ID: ARC
Appears in Collections:Agriculture, Food and Wine publications
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