Comparative genomics reveals insight into virulence strategies of plant pathogenic oomycetes

Adhikari, Bishwo N.; Hamilton, John P.; Zerillo, Marcelo M.; Tisserat, Ned; Lévesque, C. André; Buell, C. Robin

doi:https://open-science.canada.ca/handle/123456789/3316

Comparative genomics reveals insight into virulence strategies of plant pathogenic oomycetes

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creativework.keywords - en: Genomes; Molecular sequence data; Oomycetes; Pythium; Virulence (Microbiology); Plant diseases
creativework.keywords - fr: Génomes; Données de séquences moléculaires; Oomycètes; Pythium; Virulence (Microbiologie); Plantes--Maladies et fléaux
dc.contributor.author: Adhikari, Bishwo N.; Hamilton, John P.; Zerillo, Marcelo M.; Tisserat, Ned; Lévesque, C. André; Buell, C. Robin
dc.date.accepted: 2013-08-08
dc.date.accessioned: 2025-01-13T15:18:00Z
dc.date.available: 2025-01-13T15:18:00Z
dc.date.issued: 2013-10-04
dc.date.submitted: 2013-02-19
dc.description.abstract - en: The kingdom Stramenopile includes diatoms, brown algae, and oomycetes. Plant pathogenic oomycetes, including Phytophthora, Pythium and downy mildew species, cause devastating diseases on a wide range of host species and have a significant impact on agriculture. Here, we report comparative analyses on the genomes of thirteen straminipilous species, including eleven plant pathogenic oomycetes, to explore common features linked to their pathogenic lifestyle. We report the sequencing, assembly, and annotation of six Pythium genomes and comparison with other stramenopiles including photosynthetic diatoms, and other plant pathogenic oomycetes such as Phytophthora species, Hyaloperonospora arabidopsidis, and Pythium ultimum var. ultimum. Novel features of the oomycete genomes include an expansion of genes encoding secreted effectors and plant cell wall degrading enzymes in Phytophthora species and an over-representation of genes involved in proteolytic degradation and signal transduction in Pythium species. A complete lack of classical RxLR effectors was observed in the seven surveyed Pythium genomes along with an overall reduction of pathogenesis-related gene families in H. arabidopsidis. Comparative analyses revealed fewer genes encoding enzymes involved in carbohydrate metabolism in Pythium species and H. arabidopsidis as compared to Phytophthora species, suggesting variation in virulence mechanisms within plant pathogenic oomycete species. Shared features between the oomycetes and diatoms revealed common mechanisms of intracellular signaling and transportation. Our analyses demonstrate the value of comparative genome analyses for exploring the evolution of pathogenesis and survival mechanisms in the oomycetes. The comparative analyses of seven Pythium species with the closely related oomycetes, Phytophthora species and H. arabidopsidis, and distantly related diatoms provide insight into genes that underlie virulence.
dc.identifier.citation: Adhikari, B. N., Hamilton, J. P., Zerillo, M. M., Tisserat, N., Lévesque, C. A., & Buell, C. R. (2013). Comparative genomics reveals insight into virulence strategies of plant pathogenic oomycetes. PLoS ONE, 8(10), Article e75072. https://doi.org/10.1371/journal.pone.0075072
dc.identifier.doi: https://doi.org/10.1371/journal.pone.0075072
dc.identifier.issn: 1932-6203
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/3316
dc.language.iso: en
dc.publisher - en: Public Library of Science
dc.rights - en: Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.rights - fr: Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.rights.uri - en: https://creativecommons.org/licenses/by/4.0/
dc.rights.uri - fr: https://creativecommons.org/licenses/by/4.0/deed.fr
dc.subject - en: Plant diseases; Genomics
dc.subject - fr: Maladie des plantes; Génomique
dc.subject.en - en: Plant diseases; Genomics
dc.subject.fr - fr: Maladie des plantes; Génomique
dc.title - en: Comparative genomics reveals insight into virulence strategies of plant pathogenic oomycetes
dc.type - en: Article
dc.type - fr: Article
local.acceptedmanuscript.articlenum: e75072
local.article.journalissue: 10
local.article.journaltitle - en: PLoS ONE
local.article.journalvolume: 8
local.pagination: 1-15
local.peerreview - en: Yes
local.peerreview - fr: Oui
local.requestdoi: No

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