Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).

Evolutionary analyses aimed at detecting the molecular signature of selection during crop domestication and/or improvement can be used to identify genes or genomic regions of likely agronomic importance. Here, we describe the DNA sequence-based characterization of a pool of candidate genes for crop-...

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Autores principales:	Jennifer R Mandel, Edward V McAssey, Savithri Nambeesan, Elena Garcia-Navarro, John M Burke
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c8a9e6e33c83421b8bd8e65c75aa8385
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spelling	oai:doaj.org-article:c8a9e6e33c83421b8bd8e65c75aa83852021-11-18T08:16:26ZMolecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).1932-620310.1371/journal.pone.0099620https://doaj.org/article/c8a9e6e33c83421b8bd8e65c75aa83852014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24914686/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Evolutionary analyses aimed at detecting the molecular signature of selection during crop domestication and/or improvement can be used to identify genes or genomic regions of likely agronomic importance. Here, we describe the DNA sequence-based characterization of a pool of candidate genes for crop-related traits in sunflower. These genes, which were identified based on homology to genes of known effect in other study systems, were initially sequenced from a panel of improved lines. All genes that exhibited a paucity of sequence diversity, consistent with the possible effects of selection during the evolution of cultivated sunflower, were then sequenced from a panel of wild sunflower accessions an outgroup. These data enabled formal tests for the effects of selection in shaping sequence diversity at these loci. When selection was detected, we further sequenced these genes from a panel of primitive landraces, thereby allowing us to investigate the likely timing of selection (i.e., domestication vs. improvement). We ultimately identified seven genes that exhibited the signature of positive selection during either domestication or improvement. Genetic mapping of a subset of these genes revealed co-localization between candidates for genes involved in the determination of flowering time, seed germination, plant growth/development, and branching and QTL that were previously identified for these traits in cultivated × wild sunflower mapping populations.Jennifer R MandelEdward V McAsseySavithri NambeesanElena Garcia-NavarroJohn M BurkePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 6, p e99620 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jennifer R Mandel Edward V McAssey Savithri Nambeesan Elena Garcia-Navarro John M Burke Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
description	Evolutionary analyses aimed at detecting the molecular signature of selection during crop domestication and/or improvement can be used to identify genes or genomic regions of likely agronomic importance. Here, we describe the DNA sequence-based characterization of a pool of candidate genes for crop-related traits in sunflower. These genes, which were identified based on homology to genes of known effect in other study systems, were initially sequenced from a panel of improved lines. All genes that exhibited a paucity of sequence diversity, consistent with the possible effects of selection during the evolution of cultivated sunflower, were then sequenced from a panel of wild sunflower accessions an outgroup. These data enabled formal tests for the effects of selection in shaping sequence diversity at these loci. When selection was detected, we further sequenced these genes from a panel of primitive landraces, thereby allowing us to investigate the likely timing of selection (i.e., domestication vs. improvement). We ultimately identified seven genes that exhibited the signature of positive selection during either domestication or improvement. Genetic mapping of a subset of these genes revealed co-localization between candidates for genes involved in the determination of flowering time, seed germination, plant growth/development, and branching and QTL that were previously identified for these traits in cultivated × wild sunflower mapping populations.
format	article
author	Jennifer R Mandel Edward V McAssey Savithri Nambeesan Elena Garcia-Navarro John M Burke
author_facet	Jennifer R Mandel Edward V McAssey Savithri Nambeesan Elena Garcia-Navarro John M Burke
author_sort	Jennifer R Mandel
title	Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
title_short	Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
title_full	Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
title_fullStr	Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
title_full_unstemmed	Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).
title_sort	molecular evolution of candidate genes for crop-related traits in sunflower (helianthus annuus l.).
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/c8a9e6e33c83421b8bd8e65c75aa8385
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Molecular evolution of candidate genes for crop-related traits in sunflower (Helianthus annuus L.).

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