The recent recombinant evolution of a major crop pathogen, potato virus Y.

Potato virus Y (PVY) is a major agricultural disease that reduces crop yields worldwide. Different strains of PVY are associated with differing degrees of pathogenicity, of which the most common and economically important are known to be recombinant. We need to know the evolutionary origins of patho...

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Autores principales:	Johan Christiaan Visser, Dirk Uwe Bellstedt, Michael David Pirie
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7e49964fe9d6489d817373a47c97a60c
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spelling	oai:doaj.org-article:7e49964fe9d6489d817373a47c97a60c2021-11-18T08:06:46ZThe recent recombinant evolution of a major crop pathogen, potato virus Y.1932-620310.1371/journal.pone.0050631https://doaj.org/article/7e49964fe9d6489d817373a47c97a60c2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23226339/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Potato virus Y (PVY) is a major agricultural disease that reduces crop yields worldwide. Different strains of PVY are associated with differing degrees of pathogenicity, of which the most common and economically important are known to be recombinant. We need to know the evolutionary origins of pathogens to prevent further escalations of diseases, but putatively reticulate genealogies are challenging to reconstruct with standard phylogenetic approaches. Currently available phylogenetic hypotheses for PVY are either limited to non-recombinant strains, represent only parts of the genome, and/or incorrectly assume a strictly bifurcating phylogenetic tree. Despite attempts to date potyviruses in general, no attempt has been made to date the origins of pathogenic PVY. We test whether diversification of the major strains of PVY and recombination between them occurred within the time frame of the domestication and modern cultivation of potatoes. In so doing, we demonstrate a novel extension of a phylogenetic approach for reconstructing reticulate evolutionary scenarios. We infer a well resolved phylogeny of 44 whole genome sequences of PVY viruses, representative of all known strains, using recombination detection and phylogenetic inference techniques. Using Bayesian molecular dating we show that the parental strains of PVY diverged around the time potatoes were first introduced to Europe, that recombination between them only occurred in the last century, and that the multiple recombination events that led to highly pathogenic PVY(NTN) occurred within the last 50 years. Disease causing agents are often transported across the globe by humans, with disastrous effects for us, our livestock and crops. Our analytical approach is particularly pertinent for the often small recombinant genomes involved (e.g. HIV/influenza A). In the case of PVY, increased transport of diseased material is likely to blame for uniting the parents of recombinant pathogenic strains: this process needs to be minimised to prevent further such occurrences.Johan Christiaan VisserDirk Uwe BellstedtMichael David PiriePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e50631 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Johan Christiaan Visser Dirk Uwe Bellstedt Michael David Pirie The recent recombinant evolution of a major crop pathogen, potato virus Y.
description	Potato virus Y (PVY) is a major agricultural disease that reduces crop yields worldwide. Different strains of PVY are associated with differing degrees of pathogenicity, of which the most common and economically important are known to be recombinant. We need to know the evolutionary origins of pathogens to prevent further escalations of diseases, but putatively reticulate genealogies are challenging to reconstruct with standard phylogenetic approaches. Currently available phylogenetic hypotheses for PVY are either limited to non-recombinant strains, represent only parts of the genome, and/or incorrectly assume a strictly bifurcating phylogenetic tree. Despite attempts to date potyviruses in general, no attempt has been made to date the origins of pathogenic PVY. We test whether diversification of the major strains of PVY and recombination between them occurred within the time frame of the domestication and modern cultivation of potatoes. In so doing, we demonstrate a novel extension of a phylogenetic approach for reconstructing reticulate evolutionary scenarios. We infer a well resolved phylogeny of 44 whole genome sequences of PVY viruses, representative of all known strains, using recombination detection and phylogenetic inference techniques. Using Bayesian molecular dating we show that the parental strains of PVY diverged around the time potatoes were first introduced to Europe, that recombination between them only occurred in the last century, and that the multiple recombination events that led to highly pathogenic PVY(NTN) occurred within the last 50 years. Disease causing agents are often transported across the globe by humans, with disastrous effects for us, our livestock and crops. Our analytical approach is particularly pertinent for the often small recombinant genomes involved (e.g. HIV/influenza A). In the case of PVY, increased transport of diseased material is likely to blame for uniting the parents of recombinant pathogenic strains: this process needs to be minimised to prevent further such occurrences.
format	article
author	Johan Christiaan Visser Dirk Uwe Bellstedt Michael David Pirie
author_facet	Johan Christiaan Visser Dirk Uwe Bellstedt Michael David Pirie
author_sort	Johan Christiaan Visser
title	The recent recombinant evolution of a major crop pathogen, potato virus Y.
title_short	The recent recombinant evolution of a major crop pathogen, potato virus Y.
title_full	The recent recombinant evolution of a major crop pathogen, potato virus Y.
title_fullStr	The recent recombinant evolution of a major crop pathogen, potato virus Y.
title_full_unstemmed	The recent recombinant evolution of a major crop pathogen, potato virus Y.
title_sort	recent recombinant evolution of a major crop pathogen, potato virus y.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/7e49964fe9d6489d817373a47c97a60c
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The recent recombinant evolution of a major crop pathogen, potato virus Y.

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