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Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement
Identifying and mobilizing useful genetic variation from germplasm banks to breeding programs is an important strategy for sustaining crop genetic improvement. The molecular diversity of 1,423 spring bread wheat accessions representing major global production environments was investigated using high...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4503568/ https://www.ncbi.nlm.nih.gov/pubmed/26176697 http://dx.doi.org/10.1371/journal.pone.0132112 |
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author | Sehgal, Deepmala Vikram, Prashant Sansaloni, Carolina Paola Ortiz, Cynthia Pierre, Carolina Saint Payne, Thomas Ellis, Marc Amri, Ahmed Petroli, César Daniel Wenzl, Peter Singh, Sukhwinder |
author_facet | Sehgal, Deepmala Vikram, Prashant Sansaloni, Carolina Paola Ortiz, Cynthia Pierre, Carolina Saint Payne, Thomas Ellis, Marc Amri, Ahmed Petroli, César Daniel Wenzl, Peter Singh, Sukhwinder |
author_sort | Sehgal, Deepmala |
collection | PubMed |
description | Identifying and mobilizing useful genetic variation from germplasm banks to breeding programs is an important strategy for sustaining crop genetic improvement. The molecular diversity of 1,423 spring bread wheat accessions representing major global production environments was investigated using high quality genotyping-by-sequencing (GBS) loci, and gene-based markers for various adaptive and quality traits. Mean diversity index (DI) estimates revealed synthetic hexaploids to be genetically more diverse (DI= 0.284) than elites (DI = 0.267) and landraces (DI = 0.245). GBS markers discovered thousands of new SNP variations in the landraces which were well known to be adapted to drought (1273 novel GBS SNPs) and heat (4473 novel GBS SNPs) stress environments. This may open new avenues for pre-breeding by enriching the elite germplasm with novel alleles for drought and heat tolerance. Furthermore, new allelic variation for vernalization and glutenin genes was also identified from 47 landraces originating from Iraq, Iran, India, Afghanistan, Pakistan, Uzbekistan and Turkmenistan. The information generated in the study has been utilized to select 200 diverse gene bank accessions to harness their potential in pre-breeding and for allele mining of candidate genes for drought and heat stress tolerance, thus channeling novel variation into breeding pipelines. This research is part of CIMMYT’s ongoing ‘Seeds of Discovery’ project visioning towards the development of high yielding wheat varieties that address future challenges from climate change. |
format | Online Article Text |
id | pubmed-4503568 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-45035682015-07-17 Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement Sehgal, Deepmala Vikram, Prashant Sansaloni, Carolina Paola Ortiz, Cynthia Pierre, Carolina Saint Payne, Thomas Ellis, Marc Amri, Ahmed Petroli, César Daniel Wenzl, Peter Singh, Sukhwinder PLoS One Research Article Identifying and mobilizing useful genetic variation from germplasm banks to breeding programs is an important strategy for sustaining crop genetic improvement. The molecular diversity of 1,423 spring bread wheat accessions representing major global production environments was investigated using high quality genotyping-by-sequencing (GBS) loci, and gene-based markers for various adaptive and quality traits. Mean diversity index (DI) estimates revealed synthetic hexaploids to be genetically more diverse (DI= 0.284) than elites (DI = 0.267) and landraces (DI = 0.245). GBS markers discovered thousands of new SNP variations in the landraces which were well known to be adapted to drought (1273 novel GBS SNPs) and heat (4473 novel GBS SNPs) stress environments. This may open new avenues for pre-breeding by enriching the elite germplasm with novel alleles for drought and heat tolerance. Furthermore, new allelic variation for vernalization and glutenin genes was also identified from 47 landraces originating from Iraq, Iran, India, Afghanistan, Pakistan, Uzbekistan and Turkmenistan. The information generated in the study has been utilized to select 200 diverse gene bank accessions to harness their potential in pre-breeding and for allele mining of candidate genes for drought and heat stress tolerance, thus channeling novel variation into breeding pipelines. This research is part of CIMMYT’s ongoing ‘Seeds of Discovery’ project visioning towards the development of high yielding wheat varieties that address future challenges from climate change. Public Library of Science 2015-07-15 /pmc/articles/PMC4503568/ /pubmed/26176697 http://dx.doi.org/10.1371/journal.pone.0132112 Text en © 2015 Sehgal et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Sehgal, Deepmala Vikram, Prashant Sansaloni, Carolina Paola Ortiz, Cynthia Pierre, Carolina Saint Payne, Thomas Ellis, Marc Amri, Ahmed Petroli, César Daniel Wenzl, Peter Singh, Sukhwinder Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title | Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title_full | Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title_fullStr | Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title_full_unstemmed | Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title_short | Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement |
title_sort | exploring and mobilizing the gene bank biodiversity for wheat improvement |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4503568/ https://www.ncbi.nlm.nih.gov/pubmed/26176697 http://dx.doi.org/10.1371/journal.pone.0132112 |
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