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Genomics analysis of Aphanomyces spp. identifies a new class of oomycete effector associated with host adaptation

Overview of attention for article published in BMC Biology, April 2018
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Title
Genomics analysis of Aphanomyces spp. identifies a new class of oomycete effector associated with host adaptation
Published in
BMC Biology, April 2018
DOI 10.1186/s12915-018-0508-5
Pubmed ID
Authors

Elodie Gaulin, Michiel J. C. Pel, Laurent Camborde, Hélène San-Clemente, Sarah Courbier, Marie-Alexane Dupouy, Juliette Lengellé, Marine Veyssiere, Aurélie Le Ru, Frédéric Grandjean, Richard Cordaux, Bouziane Moumen, Clément Gilbert, Liliana M. Cano, Jean-Marc Aury, Julie Guy, Patrick Wincker, Olivier Bouchez, Christophe Klopp, Bernard Dumas

Abstract

Oomycetes are a group of filamentous eukaryotic microorganisms that have colonized all terrestrial and oceanic ecosystems, and they include prominent plant pathogens. The Aphanomyces genus is unique in its ability to infect both plant and animal species, and as such exemplifies oomycete versatility in adapting to different hosts and environments. Dissecting the underpinnings of oomycete diversity provides insights into their specificity and pathogenic mechanisms. By carrying out genomic analyses of the plant pathogen A. euteiches and the crustacean pathogen A. astaci, we show that host specialization is correlated with specialized secretomes that are adapted to the deconstruction of the plant cell wall in A. euteiches and protein degradation in A. astaci. The A. euteiches genome is characterized by a large repertoire of small secreted protein (SSP)-encoding genes that are highly induced during plant infection, and are not detected in other oomycetes. Functional analysis revealed an SSP from A. euteiches containing a predicted nuclear-localization signal which shuttles to the plant nucleus and increases plant susceptibility to infection. Collectively, our results show that Aphanomyces host adaptation is associated with evolution of specialized secretomes and identify SSPs as a new class of putative oomycete effectors.

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Geographical breakdown

Country Count As %
Unknown 69 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 14 20%
Researcher 12 17%
Student > Master 10 14%
Student > Doctoral Student 5 7%
Student > Bachelor 3 4%
Other 4 6%
Unknown 21 30%
Readers by discipline Count As %
Agricultural and Biological Sciences 27 39%
Biochemistry, Genetics and Molecular Biology 12 17%
Environmental Science 5 7%
Computer Science 2 3%
Pharmacology, Toxicology and Pharmaceutical Science 1 1%
Other 1 1%
Unknown 21 30%