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Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes

The efficacy of disease resistance genes in plants decreases over time because of the selection of virulent pathogen genotypes. A key goal of crop protection programs is to increase the durability of the resistance conferred by these genes. The spatial and temporal deployment of plant disease resist...

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Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5180194/
https://www.ncbi.nlm.nih.gov/pubmed/28066472
http://dx.doi.org/10.3389/fpls.2016.01916
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description The efficacy of disease resistance genes in plants decreases over time because of the selection of virulent pathogen genotypes. A key goal of crop protection programs is to increase the durability of the resistance conferred by these genes. The spatial and temporal deployment of plant disease resistance genes is considered to be a major factor determining their durability. In the literature, four principal strategies combining resistance genes over time and space have been considered to delay the evolution of virulent pathogen genotypes. We reviewed this literature with the aim of determining which deployment strategy results in the greatest durability of resistance genes. Although theoretical and empirical studies comparing deployment strategies of more than one resistance gene are very scarce, they suggest that the overall durability of disease resistance genes can be increased by combining their presence in the same plant (pyramiding). Retrospective analyses of field monitoring data also suggest that the pyramiding of disease resistance genes within a plant is the most durable strategy. By extension, we suggest that the combination of disease resistance genes with other practices for pathogen control (pesticides, farming practices) may be a relevant management strategy to slow down the evolution of virulent pathogen genotypes.
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spelling pubmed-51801942017-01-06 Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes Front Plant Sci Plant Science The efficacy of disease resistance genes in plants decreases over time because of the selection of virulent pathogen genotypes. A key goal of crop protection programs is to increase the durability of the resistance conferred by these genes. The spatial and temporal deployment of plant disease resistance genes is considered to be a major factor determining their durability. In the literature, four principal strategies combining resistance genes over time and space have been considered to delay the evolution of virulent pathogen genotypes. We reviewed this literature with the aim of determining which deployment strategy results in the greatest durability of resistance genes. Although theoretical and empirical studies comparing deployment strategies of more than one resistance gene are very scarce, they suggest that the overall durability of disease resistance genes can be increased by combining their presence in the same plant (pyramiding). Retrospective analyses of field monitoring data also suggest that the pyramiding of disease resistance genes within a plant is the most durable strategy. By extension, we suggest that the combination of disease resistance genes with other practices for pathogen control (pesticides, farming practices) may be a relevant management strategy to slow down the evolution of virulent pathogen genotypes. Frontiers Media S.A. 2016-12-23 /pmc/articles/PMC5180194/ /pubmed/28066472 http://dx.doi.org/10.3389/fpls.2016.01916 Text en Copyright © 2016 REX Consortium. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title_full Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title_fullStr Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title_full_unstemmed Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title_short Combining Selective Pressures to Enhance the Durability of Disease Resistance Genes
title_sort combining selective pressures to enhance the durability of disease resistance genes
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5180194/
https://www.ncbi.nlm.nih.gov/pubmed/28066472
http://dx.doi.org/10.3389/fpls.2016.01916
work_keys_str_mv AT combiningselectivepressurestoenhancethedurabilityofdiseaseresistancegenes