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A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice

Increasing the potassium use efficiency (KUE) of crops is important for agricultural sustainability. However, a greater understanding of this complex trait is required to develop new, high-KUE cultivars. To this end, a genome-wide association study (GWAS) was applied to diverse rice (Oryza sativa L....

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Autores principales: Hartley, Tom N, Thomas, Alice S, Maathuis, Frans J M
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6946003/
https://www.ncbi.nlm.nih.gov/pubmed/30854552
http://dx.doi.org/10.1093/jxb/erz113
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author Hartley, Tom N
Thomas, Alice S
Maathuis, Frans J M
author_facet Hartley, Tom N
Thomas, Alice S
Maathuis, Frans J M
author_sort Hartley, Tom N
collection PubMed
description Increasing the potassium use efficiency (KUE) of crops is important for agricultural sustainability. However, a greater understanding of this complex trait is required to develop new, high-KUE cultivars. To this end, a genome-wide association study (GWAS) was applied to diverse rice (Oryza sativa L.) genotypes grown under potassium-stressed and -replete conditions. Using high-stringency criteria, the genetic architecture of KUE was uncovered, together with the breadth of physiological responses to low-potassium stress. Specifically, three quantitative trait loci (QTLs) were identified, which contained >90 candidate genes. Of these, the sodium transporter gene OsHKT2;1 emerged as a key factor that impacts on KUE based on (i) the correlation between shoot Na(+) and KUE, and (ii) higher levels of HKT2;1 expression in high-KUE lines.
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spelling pubmed-69460032020-01-09 A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice Hartley, Tom N Thomas, Alice S Maathuis, Frans J M J Exp Bot Research Papers Increasing the potassium use efficiency (KUE) of crops is important for agricultural sustainability. However, a greater understanding of this complex trait is required to develop new, high-KUE cultivars. To this end, a genome-wide association study (GWAS) was applied to diverse rice (Oryza sativa L.) genotypes grown under potassium-stressed and -replete conditions. Using high-stringency criteria, the genetic architecture of KUE was uncovered, together with the breadth of physiological responses to low-potassium stress. Specifically, three quantitative trait loci (QTLs) were identified, which contained >90 candidate genes. Of these, the sodium transporter gene OsHKT2;1 emerged as a key factor that impacts on KUE based on (i) the correlation between shoot Na(+) and KUE, and (ii) higher levels of HKT2;1 expression in high-KUE lines. Oxford University Press 2020-01-07 2019-03-11 /pmc/articles/PMC6946003/ /pubmed/30854552 http://dx.doi.org/10.1093/jxb/erz113 Text en © Society for Experimental Biology 2019. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Research Papers
Hartley, Tom N
Thomas, Alice S
Maathuis, Frans J M
A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title_full A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title_fullStr A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title_full_unstemmed A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title_short A role for the OsHKT 2;1 sodium transporter in potassium use efficiency in rice
title_sort role for the oshkt 2;1 sodium transporter in potassium use efficiency in rice
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6946003/
https://www.ncbi.nlm.nih.gov/pubmed/30854552
http://dx.doi.org/10.1093/jxb/erz113
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