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An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control

Heterosis is an important phenomenon in agriculture. However, heterosis often greatly varies among hybrids and among traits. To investigate heterosis across a large number of traits and numerous genotypes, we evaluated 12 life history traits on parents and hybrids derived from five Arabidopsis thali...

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Autores principales: Moore, Siobhan, Lukens, Lewis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Genetics Society of America 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276180/
https://www.ncbi.nlm.nih.gov/pubmed/22384368
http://dx.doi.org/10.1534/g3.111.001156
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author Moore, Siobhan
Lukens, Lewis
author_facet Moore, Siobhan
Lukens, Lewis
author_sort Moore, Siobhan
collection PubMed
description Heterosis is an important phenomenon in agriculture. However, heterosis often greatly varies among hybrids and among traits. To investigate heterosis across a large number of traits and numerous genotypes, we evaluated 12 life history traits on parents and hybrids derived from five Arabidopsis thaliana ecotypes (Col, Ler-0, Cvi, Ws, and C24) by using a complete diallel analysis containing 20 hybrids. Parental contributions to heterosis were hybrid and trait specific with a few reciprocal differences. Most notably, C24 generated hybrids with flowering time, biomass, and reproductive traits that often exceeded high-parent values. However, reproductive traits of C24 and Col hybrids and flowering time traits of C24 and Ler hybrids had no heterosis. We investigated whether allelic variation at flowering time genes FRIGIDA (FRI) and FLOWERING LOCUS C (FLC) could explain the genotype- and trait-specific contribution of C24 to hybrid traits. We evaluated both Col and Ler lines introgressed with various FRI and FLC alleles and hybrids between these lines and C24. Hybrids with functional FLC differed from hybrids with nonfunctional FLC for 21 of the 24 hybrid-trait combinations. In most crosses, heterosis was fully or partially explained by FRI and FLC. Our results describe the genetic diversity for heterosis within a sample of A. thaliana ecotypes and show that FRI and FLC are major factors that contribute to heterosis in a genotype and trait specific fashion.
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spelling pubmed-32761802012-03-01 An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control Moore, Siobhan Lukens, Lewis G3 (Bethesda) Investigation Heterosis is an important phenomenon in agriculture. However, heterosis often greatly varies among hybrids and among traits. To investigate heterosis across a large number of traits and numerous genotypes, we evaluated 12 life history traits on parents and hybrids derived from five Arabidopsis thaliana ecotypes (Col, Ler-0, Cvi, Ws, and C24) by using a complete diallel analysis containing 20 hybrids. Parental contributions to heterosis were hybrid and trait specific with a few reciprocal differences. Most notably, C24 generated hybrids with flowering time, biomass, and reproductive traits that often exceeded high-parent values. However, reproductive traits of C24 and Col hybrids and flowering time traits of C24 and Ler hybrids had no heterosis. We investigated whether allelic variation at flowering time genes FRIGIDA (FRI) and FLOWERING LOCUS C (FLC) could explain the genotype- and trait-specific contribution of C24 to hybrid traits. We evaluated both Col and Ler lines introgressed with various FRI and FLC alleles and hybrids between these lines and C24. Hybrids with functional FLC differed from hybrids with nonfunctional FLC for 21 of the 24 hybrid-trait combinations. In most crosses, heterosis was fully or partially explained by FRI and FLC. Our results describe the genetic diversity for heterosis within a sample of A. thaliana ecotypes and show that FRI and FLC are major factors that contribute to heterosis in a genotype and trait specific fashion. Genetics Society of America 2011-12-01 /pmc/articles/PMC3276180/ /pubmed/22384368 http://dx.doi.org/10.1534/g3.111.001156 Text en Copyright © 2011 Moore, Lukens http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Unported License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Investigation
Moore, Siobhan
Lukens, Lewis
An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title_full An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title_fullStr An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title_full_unstemmed An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title_short An Evaluation of Arabidopsis thaliana Hybrid Traits and Their Genetic Control
title_sort evaluation of arabidopsis thaliana hybrid traits and their genetic control
topic Investigation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276180/
https://www.ncbi.nlm.nih.gov/pubmed/22384368
http://dx.doi.org/10.1534/g3.111.001156
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