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Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits
Water scarcity constitutes a crucial constraint for agriculture productivity. High-throughput approaches in model plant species identified hundreds of genes potentially involved in survival under drought, but few having beneficial effects on quality and yield. Nonetheless, controlled water deficit m...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5181584/ https://www.ncbi.nlm.nih.gov/pubmed/27856709 http://dx.doi.org/10.1093/jxb/erw411 |
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author | Albert, Elise Segura, Vincent Gricourt, Justine Bonnefoi, Julien Derivot, Laurent Causse, Mathilde |
author_facet | Albert, Elise Segura, Vincent Gricourt, Justine Bonnefoi, Julien Derivot, Laurent Causse, Mathilde |
author_sort | Albert, Elise |
collection | PubMed |
description | Water scarcity constitutes a crucial constraint for agriculture productivity. High-throughput approaches in model plant species identified hundreds of genes potentially involved in survival under drought, but few having beneficial effects on quality and yield. Nonetheless, controlled water deficit may improve fruit quality through higher concentration of flavor compounds. The underlying genetic determinants are still poorly known. In this study, we phenotyped 141 highly diverse small fruit tomato accessions for 27 traits under two contrasting watering conditions. A subset of 55 accessions exhibited increased metabolite contents and maintained yield under water deficit. Using 6100 single nucleotide polymorphisms (SNPs), association mapping revealed 31, 41, and 44 quantitative trait loci (QTLs) under drought, control, and both conditions, respectively. Twenty-five additional QTLs were interactive between conditions, emphasizing the interest in accounting for QTLs by watering regime interactions in fruit quality improvement. Combining our results with the loci previously identified in a biparental progeny resulted in 11 common QTLs and contributed to a first detailed characterization of the genetic determinants of response to water deficit in tomato. Major QTLs for fruit quality traits were dissected and candidate genes were proposed using expression and polymorphism data. The outcomes provide a basis for fruit quality improvement under deficit irrigation while limiting yield losses. |
format | Online Article Text |
id | pubmed-5181584 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-51815842016-12-27 Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits Albert, Elise Segura, Vincent Gricourt, Justine Bonnefoi, Julien Derivot, Laurent Causse, Mathilde J Exp Bot Research Paper Water scarcity constitutes a crucial constraint for agriculture productivity. High-throughput approaches in model plant species identified hundreds of genes potentially involved in survival under drought, but few having beneficial effects on quality and yield. Nonetheless, controlled water deficit may improve fruit quality through higher concentration of flavor compounds. The underlying genetic determinants are still poorly known. In this study, we phenotyped 141 highly diverse small fruit tomato accessions for 27 traits under two contrasting watering conditions. A subset of 55 accessions exhibited increased metabolite contents and maintained yield under water deficit. Using 6100 single nucleotide polymorphisms (SNPs), association mapping revealed 31, 41, and 44 quantitative trait loci (QTLs) under drought, control, and both conditions, respectively. Twenty-five additional QTLs were interactive between conditions, emphasizing the interest in accounting for QTLs by watering regime interactions in fruit quality improvement. Combining our results with the loci previously identified in a biparental progeny resulted in 11 common QTLs and contributed to a first detailed characterization of the genetic determinants of response to water deficit in tomato. Major QTLs for fruit quality traits were dissected and candidate genes were proposed using expression and polymorphism data. The outcomes provide a basis for fruit quality improvement under deficit irrigation while limiting yield losses. Oxford University Press 2016-12 2016-11-17 /pmc/articles/PMC5181584/ /pubmed/27856709 http://dx.doi.org/10.1093/jxb/erw411 Text en © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Paper Albert, Elise Segura, Vincent Gricourt, Justine Bonnefoi, Julien Derivot, Laurent Causse, Mathilde Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title | Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title_full | Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title_fullStr | Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title_full_unstemmed | Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title_short | Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
title_sort | association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5181584/ https://www.ncbi.nlm.nih.gov/pubmed/27856709 http://dx.doi.org/10.1093/jxb/erw411 |
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