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Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation
BACKGROUND: Since the first fungal genome sequences became available, investigators have been employing comparative genomics to understand how fungi have evolved to occupy diverse ecological niches. The secretome, i.e. the entirety of all proteins secreted by an organism, is of particular importance...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4161775/ https://www.ncbi.nlm.nih.gov/pubmed/25159997 http://dx.doi.org/10.1186/1471-2164-15-722 |
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author | Krijger, Jorrit-Jan Thon, Michael R Deising, Holger B Wirsel, Stefan GR |
author_facet | Krijger, Jorrit-Jan Thon, Michael R Deising, Holger B Wirsel, Stefan GR |
author_sort | Krijger, Jorrit-Jan |
collection | PubMed |
description | BACKGROUND: Since the first fungal genome sequences became available, investigators have been employing comparative genomics to understand how fungi have evolved to occupy diverse ecological niches. The secretome, i.e. the entirety of all proteins secreted by an organism, is of particular importance, as by these proteins fungi acquire nutrients and communicate with their surroundings. RESULTS: It is generally assumed that fungi with similar nutritional lifestyles have similar secretome compositions. In this study, we test this hypothesis by annotating and comparing the soluble secretomes, defined as the sets of proteins containing classical signal peptides but lacking transmembrane domains of fungi representing a broad diversity of nutritional lifestyles. Secretome size correlates with phylogeny and to a lesser extent with lifestyle. Plant pathogens and saprophytes have larger secretomes than animal pathogens. Small secreted cysteine-rich proteins (SSCPs), which may comprise many effectors important for the interaction of plant pathogens with their hosts, are defined here to have a mature length of ≤ 300 aa residues, at least four cysteines, and a total cysteine content of ≥5%. SSCPs are found enriched in the secretomes of the Pezizomycotina and Basidiomycota in comparison to Saccharomycotina. Relative SSCP content is noticeably higher in plant pathogens than in animal pathogens, while saprophytes were in between and closer to plant pathogens. Expansions and contractions of gene families and in the number of occurrences of functional domains are largely lineage specific, e.g. contraction of glycoside hydrolases in Saccharomycotina, and are only weakly correlated with lifestyle. However, within a given lifestyle a few general trends exist, such as the expansion of secreted family M14 metallopeptidases and chitin-binding proteins in plant pathogenic Pezizomycotina. CONCLUSIONS: While the secretomes of fungi with similar lifestyles share certain characteristics, the expansion and contraction of gene families is largely lineage specific, and not shared among all fungi of a given lifestyle. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1471-2164-15-722) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4161775 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-41617752014-09-19 Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation Krijger, Jorrit-Jan Thon, Michael R Deising, Holger B Wirsel, Stefan GR BMC Genomics Research Article BACKGROUND: Since the first fungal genome sequences became available, investigators have been employing comparative genomics to understand how fungi have evolved to occupy diverse ecological niches. The secretome, i.e. the entirety of all proteins secreted by an organism, is of particular importance, as by these proteins fungi acquire nutrients and communicate with their surroundings. RESULTS: It is generally assumed that fungi with similar nutritional lifestyles have similar secretome compositions. In this study, we test this hypothesis by annotating and comparing the soluble secretomes, defined as the sets of proteins containing classical signal peptides but lacking transmembrane domains of fungi representing a broad diversity of nutritional lifestyles. Secretome size correlates with phylogeny and to a lesser extent with lifestyle. Plant pathogens and saprophytes have larger secretomes than animal pathogens. Small secreted cysteine-rich proteins (SSCPs), which may comprise many effectors important for the interaction of plant pathogens with their hosts, are defined here to have a mature length of ≤ 300 aa residues, at least four cysteines, and a total cysteine content of ≥5%. SSCPs are found enriched in the secretomes of the Pezizomycotina and Basidiomycota in comparison to Saccharomycotina. Relative SSCP content is noticeably higher in plant pathogens than in animal pathogens, while saprophytes were in between and closer to plant pathogens. Expansions and contractions of gene families and in the number of occurrences of functional domains are largely lineage specific, e.g. contraction of glycoside hydrolases in Saccharomycotina, and are only weakly correlated with lifestyle. However, within a given lifestyle a few general trends exist, such as the expansion of secreted family M14 metallopeptidases and chitin-binding proteins in plant pathogenic Pezizomycotina. CONCLUSIONS: While the secretomes of fungi with similar lifestyles share certain characteristics, the expansion and contraction of gene families is largely lineage specific, and not shared among all fungi of a given lifestyle. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1471-2164-15-722) contains supplementary material, which is available to authorized users. BioMed Central 2014-08-27 /pmc/articles/PMC4161775/ /pubmed/25159997 http://dx.doi.org/10.1186/1471-2164-15-722 Text en © Krijger et al.; licensee BioMed Central Ltd. 2014 This article is published under license to BioMed Central Ltd. 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 work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Krijger, Jorrit-Jan Thon, Michael R Deising, Holger B Wirsel, Stefan GR Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title | Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title_full | Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title_fullStr | Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title_full_unstemmed | Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title_short | Compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
title_sort | compositions of fungal secretomes indicate a greater impact of phylogenetic history than lifestyle adaptation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4161775/ https://www.ncbi.nlm.nih.gov/pubmed/25159997 http://dx.doi.org/10.1186/1471-2164-15-722 |
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