The rise and fall of genes: origins and functions of plant pathogen pangenomes.
Identifieur interne : 000021 ( Main/Exploration ); précédent : 000020; suivant : 000022The rise and fall of genes: origins and functions of plant pathogen pangenomes.
Auteurs : Thomas Badet [Suisse] ; Daniel Croll [Suisse]Source :
- Current opinion in plant biology [ 1879-0356 ] ; 2020.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Maladies des plantes, Plantes.
- Virulence.
English descriptors
- KwdEn :
- MESH :
- genetics : Plant Diseases, Plants.
- Virulence.
Abstract
Plant pathogens can rapidly overcome resistance of their hosts by mutating key pathogenicity genes encoding for effectors. Pathogen adaptation is fuelled by extensive genetic variability in populations and different strains may not share the same set of genes. Recently, such an intra-specific variation in gene content became formalized as pangenomes distinguishing core genes (i.e. shared) and accessory genes (i.e. lineage or strain-specific). Across pathogens species, key effectors tend to be part of the rapidly evolving accessory genome. Here, we show how the construction and analysis of pathogen pangenomes provide deep insights into the dynamic host adaptation process. We also discuss how pangenomes should ideally be built and how geography, niche and lifestyle likely determine pangenome sizes.
DOI: 10.1016/j.pbi.2020.04.009
PubMed: 32480355
Affiliations:
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Pathogen adaptation is fuelled by extensive genetic variability in populations and different strains may not share the same set of genes. Recently, such an intra-specific variation in gene content became formalized as pangenomes distinguishing core genes (i.e. shared) and accessory genes (i.e. lineage or strain-specific). Across pathogens species, key effectors tend to be part of the rapidly evolving accessory genome. Here, we show how the construction and analysis of pathogen pangenomes provide deep insights into the dynamic host adaptation process. We also discuss how pangenomes should ideally be built and how geography, niche and lifestyle likely determine pangenome sizes.</AbstractText><CopyrightInformation>Copyright © 2020 The Authors. Published by Elsevier Ltd.. 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