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Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives

Genome instability in newly synthesized allotetraploids of peanut has breeding implications that have not been fully appreciated. Synthesis of wild species-derived neo-tetraploids offers the opportunity to broaden the gene pool of peanut; however, the dynamics among the newly merged genomes creates...

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Autores principales: Chu, Ye, Bertioli, David, Levinson, Chandler M, Stalker, H Thomas, Holbrook, C Corley, Ozias-Akins, Peggy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8759810/
https://www.ncbi.nlm.nih.gov/pubmed/33693764
http://dx.doi.org/10.1093/g3journal/jkab066
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author Chu, Ye
Bertioli, David
Levinson, Chandler M
Stalker, H Thomas
Holbrook, C Corley
Ozias-Akins, Peggy
author_facet Chu, Ye
Bertioli, David
Levinson, Chandler M
Stalker, H Thomas
Holbrook, C Corley
Ozias-Akins, Peggy
author_sort Chu, Ye
collection PubMed
description Genome instability in newly synthesized allotetraploids of peanut has breeding implications that have not been fully appreciated. Synthesis of wild species-derived neo-tetraploids offers the opportunity to broaden the gene pool of peanut; however, the dynamics among the newly merged genomes creates predictable and unpredictable variation. Selfed progenies from the neo-tetraploid Arachis ipaënsis × Arachis correntina (A. ipaënsis × A. correntina)(4x) and F(1) hybrids and F(2) progenies from crosses between A. hypogaea × [A. ipaënsis × A. correntina](4x) were genotyped by the Axiom Arachis 48 K SNP array. Homoeologous recombination between the A. ipaënsis and A. correntina derived subgenomes was observed in the S(0) generation. Among the S(1) progenies, these recombined segments segregated and new events of homoeologous recombination emerged. The genomic regions undergoing homoeologous recombination segregated mostly disomically in the F(2) progenies from A. hypogaea × [A. ipaënsis × A. correntina](4x) crosses. New homoeologous recombination events also occurred in the F(2) population, mostly found on chromosomes 03, 04, 05, and 06. From the breeding perspective, these phenomena offer both possibilities and perils; recombination between genomes increases genetic diversity, but genome instability could lead to instability of traits or even loss of viability within lineages.
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spelling pubmed-87598102022-01-18 Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives Chu, Ye Bertioli, David Levinson, Chandler M Stalker, H Thomas Holbrook, C Corley Ozias-Akins, Peggy G3 (Bethesda) Genome Reports Genome instability in newly synthesized allotetraploids of peanut has breeding implications that have not been fully appreciated. Synthesis of wild species-derived neo-tetraploids offers the opportunity to broaden the gene pool of peanut; however, the dynamics among the newly merged genomes creates predictable and unpredictable variation. Selfed progenies from the neo-tetraploid Arachis ipaënsis × Arachis correntina (A. ipaënsis × A. correntina)(4x) and F(1) hybrids and F(2) progenies from crosses between A. hypogaea × [A. ipaënsis × A. correntina](4x) were genotyped by the Axiom Arachis 48 K SNP array. Homoeologous recombination between the A. ipaënsis and A. correntina derived subgenomes was observed in the S(0) generation. Among the S(1) progenies, these recombined segments segregated and new events of homoeologous recombination emerged. The genomic regions undergoing homoeologous recombination segregated mostly disomically in the F(2) progenies from A. hypogaea × [A. ipaënsis × A. correntina](4x) crosses. New homoeologous recombination events also occurred in the F(2) population, mostly found on chromosomes 03, 04, 05, and 06. From the breeding perspective, these phenomena offer both possibilities and perils; recombination between genomes increases genetic diversity, but genome instability could lead to instability of traits or even loss of viability within lineages. Oxford University Press 2021-03-08 /pmc/articles/PMC8759810/ /pubmed/33693764 http://dx.doi.org/10.1093/g3journal/jkab066 Text en © The Author(s) 2021. Published by Oxford University Press on behalf of Genetics Society of America. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) ), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Genome Reports
Chu, Ye
Bertioli, David
Levinson, Chandler M
Stalker, H Thomas
Holbrook, C Corley
Ozias-Akins, Peggy
Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title_full Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title_fullStr Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title_full_unstemmed Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title_short Homoeologous recombination is recurrent in the nascent synthetic allotetraploid Arachis ipaënsis × Arachis correntina(4x) and its derivatives
title_sort homoeologous recombination is recurrent in the nascent synthetic allotetraploid arachis ipaënsis × arachis correntina(4x) and its derivatives
topic Genome Reports
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8759810/
https://www.ncbi.nlm.nih.gov/pubmed/33693764
http://dx.doi.org/10.1093/g3journal/jkab066
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