Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.

Lateral gene transfers (LGT), species to species transmission of genes by means other than direct inheritance from a common ancestor, have played significant role in shaping prokaryotic genomes and are involved in gain or transfer of important biological processes. Whether LGT significantly contribu...

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Autores principales:	Julien Paganini, Amandine Campan-Fournier, Martine Da Rocha, Philippe Gouret, Pierre Pontarotti, Eric Wajnberg, Pierre Abad, Etienne G J Danchin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5d3134f0e6f949a28ce50c977d4445be
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spelling	oai:doaj.org-article:5d3134f0e6f949a28ce50c977d4445be2021-11-18T08:06:39ZContribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.1932-620310.1371/journal.pone.0050875https://doaj.org/article/5d3134f0e6f949a28ce50c977d4445be2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23226415/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Lateral gene transfers (LGT), species to species transmission of genes by means other than direct inheritance from a common ancestor, have played significant role in shaping prokaryotic genomes and are involved in gain or transfer of important biological processes. Whether LGT significantly contributed to the composition of an animal genome is currently unclear. In nematodes, multiple LGT are suspected to have favored emergence of plant-parasitism. With the availability of whole genome sequences it is now possible to assess whether LGT have significantly contributed to the composition of an animal genome and to establish a comprehensive list of these events. We generated clusters of homologous genes and automated phylogenetic inference, to detect LGT in the genomes of root-knot nematodes and found that up to 3.34% of the genes originate from LGT of non-metazoan origin. After their acquisition, the majority of genes underwent series of duplications. Compared to the rest of the genes in these species, several predicted functional categories showed a skewed distribution in the set of genes acquired via LGT. Interestingly, functions related to metabolism, degradation or modification of carbohydrates or proteins were substantially more frequent. This suggests that genes involved in these processes, related to a parasitic lifestyle, have been more frequently fixed in these parasites after their acquisition. Genes from soil bacteria, including plant-pathogens were the most frequent closest relatives, suggesting donors were preferentially bacteria from the rhizosphere. Several of these bacterial genes are plasmid-borne, pointing to a possible role of these mobile genetic elements in the transfer mechanism. Our analysis provides the first comprehensive description of the ensemble of genes of non-metazoan origin in an animal genome. Besides being involved in important processes regarding plant-parasitism, genes acquired via LGT now constitute a substantial proportion of protein-coding genes in these nematode genomes.Julien PaganiniAmandine Campan-FournierMartine Da RochaPhilippe GouretPierre PontarottiEric WajnbergPierre AbadEtienne G J DanchinPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e50875 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Julien Paganini Amandine Campan-Fournier Martine Da Rocha Philippe Gouret Pierre Pontarotti Eric Wajnberg Pierre Abad Etienne G J Danchin Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
description	Lateral gene transfers (LGT), species to species transmission of genes by means other than direct inheritance from a common ancestor, have played significant role in shaping prokaryotic genomes and are involved in gain or transfer of important biological processes. Whether LGT significantly contributed to the composition of an animal genome is currently unclear. In nematodes, multiple LGT are suspected to have favored emergence of plant-parasitism. With the availability of whole genome sequences it is now possible to assess whether LGT have significantly contributed to the composition of an animal genome and to establish a comprehensive list of these events. We generated clusters of homologous genes and automated phylogenetic inference, to detect LGT in the genomes of root-knot nematodes and found that up to 3.34% of the genes originate from LGT of non-metazoan origin. After their acquisition, the majority of genes underwent series of duplications. Compared to the rest of the genes in these species, several predicted functional categories showed a skewed distribution in the set of genes acquired via LGT. Interestingly, functions related to metabolism, degradation or modification of carbohydrates or proteins were substantially more frequent. This suggests that genes involved in these processes, related to a parasitic lifestyle, have been more frequently fixed in these parasites after their acquisition. Genes from soil bacteria, including plant-pathogens were the most frequent closest relatives, suggesting donors were preferentially bacteria from the rhizosphere. Several of these bacterial genes are plasmid-borne, pointing to a possible role of these mobile genetic elements in the transfer mechanism. Our analysis provides the first comprehensive description of the ensemble of genes of non-metazoan origin in an animal genome. Besides being involved in important processes regarding plant-parasitism, genes acquired via LGT now constitute a substantial proportion of protein-coding genes in these nematode genomes.
format	article
author	Julien Paganini Amandine Campan-Fournier Martine Da Rocha Philippe Gouret Pierre Pontarotti Eric Wajnberg Pierre Abad Etienne G J Danchin
author_facet	Julien Paganini Amandine Campan-Fournier Martine Da Rocha Philippe Gouret Pierre Pontarotti Eric Wajnberg Pierre Abad Etienne G J Danchin
author_sort	Julien Paganini
title	Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
title_short	Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
title_full	Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
title_fullStr	Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
title_full_unstemmed	Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
title_sort	contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/5d3134f0e6f949a28ce50c977d4445be
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Contribution of lateral gene transfers to the genome composition and parasitic ability of root-knot nematodes.

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