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Are duplicated genes responsible for anthracnose resistance in common bean?
The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5351970/ https://www.ncbi.nlm.nih.gov/pubmed/28296933 http://dx.doi.org/10.1371/journal.pone.0173789 |
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author | Costa, Larissa Carvalho Nalin, Rafael Storto Ramalho, Magno Antonio Patto de Souza, Elaine Aparecida |
author_facet | Costa, Larissa Carvalho Nalin, Rafael Storto Ramalho, Magno Antonio Patto de Souza, Elaine Aparecida |
author_sort | Costa, Larissa Carvalho |
collection | PubMed |
description | The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability that has been detected within race has made it difficult to obtain cultivars with durable resistance, because cultivars may have different reactions to each strain of race 65. Thus, this work aimed at studying the resistance inheritance of common bean lines to different strains of C. lindemuthianum, race 65. We used six C. lindemuthianum strains previously characterized as belonging to the race 65 through the international set of differential cultivars of anthracnose and nine commercial cultivars, adapted to the Brazilian growing conditions and with potential ability to discriminate the variability within this race. To obtain information on the resistance inheritance related to nine commercial cultivars to six strains of race 65, these cultivars were crossed two by two in all possible combinations, resulting in 36 hybrids. Segregation in the F(2) generations revealed that the resistance to each strain is conditioned by two independent genes with the same function, suggesting that they are duplicated genes, where the dominant allele promotes resistance. These results indicate that the specificity between host resistance genes and pathogen avirulence genes is not limited to races, it also occurs within strains of the same race. Further research may be carried out in order to establish if the alleles identified in these cultivars are different from those described in the literature. |
format | Online Article Text |
id | pubmed-5351970 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-53519702017-04-06 Are duplicated genes responsible for anthracnose resistance in common bean? Costa, Larissa Carvalho Nalin, Rafael Storto Ramalho, Magno Antonio Patto de Souza, Elaine Aparecida PLoS One Research Article The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability that has been detected within race has made it difficult to obtain cultivars with durable resistance, because cultivars may have different reactions to each strain of race 65. Thus, this work aimed at studying the resistance inheritance of common bean lines to different strains of C. lindemuthianum, race 65. We used six C. lindemuthianum strains previously characterized as belonging to the race 65 through the international set of differential cultivars of anthracnose and nine commercial cultivars, adapted to the Brazilian growing conditions and with potential ability to discriminate the variability within this race. To obtain information on the resistance inheritance related to nine commercial cultivars to six strains of race 65, these cultivars were crossed two by two in all possible combinations, resulting in 36 hybrids. Segregation in the F(2) generations revealed that the resistance to each strain is conditioned by two independent genes with the same function, suggesting that they are duplicated genes, where the dominant allele promotes resistance. These results indicate that the specificity between host resistance genes and pathogen avirulence genes is not limited to races, it also occurs within strains of the same race. Further research may be carried out in order to establish if the alleles identified in these cultivars are different from those described in the literature. Public Library of Science 2017-03-15 /pmc/articles/PMC5351970/ /pubmed/28296933 http://dx.doi.org/10.1371/journal.pone.0173789 Text en © 2017 Costa 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 (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Costa, Larissa Carvalho Nalin, Rafael Storto Ramalho, Magno Antonio Patto de Souza, Elaine Aparecida Are duplicated genes responsible for anthracnose resistance in common bean? |
title | Are duplicated genes responsible for anthracnose resistance in common bean? |
title_full | Are duplicated genes responsible for anthracnose resistance in common bean? |
title_fullStr | Are duplicated genes responsible for anthracnose resistance in common bean? |
title_full_unstemmed | Are duplicated genes responsible for anthracnose resistance in common bean? |
title_short | Are duplicated genes responsible for anthracnose resistance in common bean? |
title_sort | are duplicated genes responsible for anthracnose resistance in common bean? |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5351970/ https://www.ncbi.nlm.nih.gov/pubmed/28296933 http://dx.doi.org/10.1371/journal.pone.0173789 |
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