Staff View: Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola

Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola

Invasive pathogens can be a threat when they affect human health, food production or ecosystem services, by displacing resident species, and we need to understand the cause of their establishment. We studied the patterns and causes of the establishment of the pathogen Dickeya solani that recently in...

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Main Authors:	Blin, Pauline, Robic, Kevin, Khayi, Slimane, Cigna, Jeremy, Munier, Euphrasie, Dewaegeneire, Pauline, Laurent, Angelique, Jaszczyszyn, Yan, Hong, Kar-Wai, Chan, Kok-Gan, Beury, Amelie, Reverchon, Sylvie, Giraud, Tatiana, Helias, Valerie, Faure, Denis
Format:	Article
Published:	Blackwell Publishing 2021
Subjects:	GE Environmental Sciences QD Chemistry QR Microbiology
Online Access:	http://eprints.um.edu.my/34590/
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spelling	my.um.eprints.345902022-09-15T06:05:05Z http://eprints.um.edu.my/34590/ Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola Blin, Pauline Robic, Kevin Khayi, Slimane Cigna, Jeremy Munier, Euphrasie Dewaegeneire, Pauline Laurent, Angelique Jaszczyszyn, Yan Hong, Kar-Wai Chan, Kok-Gan Beury, Amelie Reverchon, Sylvie Giraud, Tatiana Helias, Valerie Faure, Denis GE Environmental Sciences QD Chemistry QR Microbiology Invasive pathogens can be a threat when they affect human health, food production or ecosystem services, by displacing resident species, and we need to understand the cause of their establishment. We studied the patterns and causes of the establishment of the pathogen Dickeya solani that recently invaded potato agrosystems in Europe by assessing its invasion dynamics and its competitive ability against the closely related resident D. dianthicola species. Epidemiological records over one decade in France revealed the establishment of D. solani and the maintenance of the resident D. dianthicola in potato fields exhibiting blackleg symptoms. Using experimentations, we showed that D. dianthicola caused a higher symptom incidence on aerial parts of potato plants than D. solani, while D. solani was more aggressive on tubers (i.e. with more severe symptoms). In co-infection assays, D. dianthicola outcompeted D. solani in aerial parts, while the two species co-existed in tubers. A comparison of 76 D. solani genomes (56 of which have been sequenced here) revealed balanced frequencies of two previously uncharacterized alleles, VfmB(Pro) and VfmB(Ser), at the vfmB virulence gene. Experimental inoculations showed that the VfmB(Ser) population was more aggressive on tubers, while the VfmB(Pro) population outcompeted the VfmB(Ser) population in stem lesions, suggesting an important role of the vfmB virulence gene in the ecology of the pathogens. This study thus brings novel insights allowing a better understanding of the pattern and causes of the D.solani invasion into potato production agrosystems, and the reasons why the endemic D. dianthicola nevertheless persisted. Blackwell Publishing 2021-01 Article PeerReviewed Blin, Pauline and Robic, Kevin and Khayi, Slimane and Cigna, Jeremy and Munier, Euphrasie and Dewaegeneire, Pauline and Laurent, Angelique and Jaszczyszyn, Yan and Hong, Kar-Wai and Chan, Kok-Gan and Beury, Amelie and Reverchon, Sylvie and Giraud, Tatiana and Helias, Valerie and Faure, Denis (2021) Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola. Molecular Ecology, 30 (2). pp. 608-624. ISSN 0962-1083, DOI https://doi.org/10.1111/mec.15751 <https://doi.org/10.1111/mec.15751>. 10.1111/mec.15751
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	GE Environmental Sciences QD Chemistry QR Microbiology
spellingShingle	GE Environmental Sciences QD Chemistry QR Microbiology Blin, Pauline Robic, Kevin Khayi, Slimane Cigna, Jeremy Munier, Euphrasie Dewaegeneire, Pauline Laurent, Angelique Jaszczyszyn, Yan Hong, Kar-Wai Chan, Kok-Gan Beury, Amelie Reverchon, Sylvie Giraud, Tatiana Helias, Valerie Faure, Denis Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
description	Invasive pathogens can be a threat when they affect human health, food production or ecosystem services, by displacing resident species, and we need to understand the cause of their establishment. We studied the patterns and causes of the establishment of the pathogen Dickeya solani that recently invaded potato agrosystems in Europe by assessing its invasion dynamics and its competitive ability against the closely related resident D. dianthicola species. Epidemiological records over one decade in France revealed the establishment of D. solani and the maintenance of the resident D. dianthicola in potato fields exhibiting blackleg symptoms. Using experimentations, we showed that D. dianthicola caused a higher symptom incidence on aerial parts of potato plants than D. solani, while D. solani was more aggressive on tubers (i.e. with more severe symptoms). In co-infection assays, D. dianthicola outcompeted D. solani in aerial parts, while the two species co-existed in tubers. A comparison of 76 D. solani genomes (56 of which have been sequenced here) revealed balanced frequencies of two previously uncharacterized alleles, VfmB(Pro) and VfmB(Ser), at the vfmB virulence gene. Experimental inoculations showed that the VfmB(Ser) population was more aggressive on tubers, while the VfmB(Pro) population outcompeted the VfmB(Ser) population in stem lesions, suggesting an important role of the vfmB virulence gene in the ecology of the pathogens. This study thus brings novel insights allowing a better understanding of the pattern and causes of the D.solani invasion into potato production agrosystems, and the reasons why the endemic D. dianthicola nevertheless persisted.
format	Article
author	Blin, Pauline Robic, Kevin Khayi, Slimane Cigna, Jeremy Munier, Euphrasie Dewaegeneire, Pauline Laurent, Angelique Jaszczyszyn, Yan Hong, Kar-Wai Chan, Kok-Gan Beury, Amelie Reverchon, Sylvie Giraud, Tatiana Helias, Valerie Faure, Denis
author_facet	Blin, Pauline Robic, Kevin Khayi, Slimane Cigna, Jeremy Munier, Euphrasie Dewaegeneire, Pauline Laurent, Angelique Jaszczyszyn, Yan Hong, Kar-Wai Chan, Kok-Gan Beury, Amelie Reverchon, Sylvie Giraud, Tatiana Helias, Valerie Faure, Denis
author_sort	Blin, Pauline
title	Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
title_short	Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
title_full	Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
title_fullStr	Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
title_full_unstemmed	Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola
title_sort	pattern and causes of the establishment of the invasive bacterial potato pathogen dickeya solani and of the maintenance of the resident pathogen d. dianthicola
publisher	Blackwell Publishing
publishDate	2021
url	http://eprints.um.edu.my/34590/
_version_	1744649188625350656
score	13.211869

Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola

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