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https://hdl.handle.net/2440/98223
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dc.contributor.author | Genc, Y. | - |
dc.contributor.author | Oldach, K. | - |
dc.contributor.author | Taylor, J. | - |
dc.contributor.author | Lyons, G. | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | New Phytologist, 2016; 210(1):145-156 | - |
dc.identifier.issn | 1469-8137 | - |
dc.identifier.issn | 1469-8137 | - |
dc.identifier.uri | http://hdl.handle.net/2440/98223 | - |
dc.description.abstract | The separation of toxic effects of sodium (Na+) and chloride (Cl−) by the current methods of mixed salts and subsequent determination of their relevance to breeding has been problematic. We report a novel method (Na+ humate) to study the ionic effects of Na+ toxicity without interference from Cl−, and ionic and osmotic effects when combined with salinity (NaCl). Three cereal species (Hordeum vulgare, Triticum aestivum and Triticum turgidum ssp. durum with and without the Na+ exclusion gene Nax2) differing in Na+ exclusion were grown in a potting mix under sodicity (Na+ humate) and salinity (NaCl), and water use, leaf nutrient profiles and yield were determined. Under sodicity, Na+-excluding bread wheat and durum wheat with the Nax2 gene had higher yield than Na+-accumulating barley and durum wheat without the Nax2 gene. However, under salinity, despite a 100-fold difference in leaf Na+, all species yielded similarly, indicating that osmotic stress negated the benefits of Na+ exclusion. In conclusion, Na+ exclusion can be an effective mechanism for sodicity tolerance, while osmoregulation and tissue tolerance to Na+ and/or Cl− should be the main foci for further improvement of salinity tolerance in cereals. This represents a paradigm shift for breeding cereals with salinity tolerance. | - |
dc.description.statementofresponsibility | Yusuf Genc, Klaus Oldach, Julian Taylor and Graham H. Lyons | - |
dc.language.iso | en | - |
dc.publisher | Wiley | - |
dc.rights | © 2015 Commonwealth of Australia, New Phytologist © 2015 New Phytologist Trust | - |
dc.source.uri | http://dx.doi.org/10.1111/nph.13757 | - |
dc.subject | chloride (Cl¯); ionic; osmotic; salinity; sodicity; sodium (Na⁺); sodium humate; tolerance | - |
dc.title | Uncoupling of sodium and chloride to assist breeding for salinity tolerance in crops | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1111/nph.13757 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Genc, Y. [0000-0002-6302-6692] | - |
dc.identifier.orcid | Taylor, J. [0000-0002-9145-052X] | - |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 3 |
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