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  1. Article ; Online: How Did Host Domestication Modify Life History Traits of Its Pathogens?

    De Gracia, Marie / Cascales, Mathilde / Expert, Pascale / Bellanger, Marie-Noelle / Le Cam, Bruno / Lemaire, Christophe

    PloS one

    2015  Volume 10, Issue 6, Page(s) e0122909

    Abstract: Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis ... ...

    Abstract Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis during domestication of the apple. Life traits linked to fungal dispersal were compared between 60 strains that were sampled in domestic and wild habitats in Kazakhstan, the center of origin of both host and pathogen. Our two main findings are that transition from wild to agro-ecosystems was associated with an increase of both spore size and sporulation capacity; and that distribution of quantitative traits of the domestic population mostly overlapped with those of the wild population. Our results suggest that apple domestication had a considerable impact on fungal characters linked to its dispersal through selection from standing phenotypic diversity. We showed that pestification of V. inaequalis in orchards led to an enhanced allocation in colonization ability from standing variation in the wild area. This study emphasizes the potential threat that pathogenic fungal populations living in wild environments represent for durability of resistance in agro-ecosystems.
    MeSH term(s) Biological Evolution ; Ecosystem ; Host-Pathogen Interactions ; Malus ; Phenotype ; Plant Diseases/microbiology ; Quantitative Trait, Heritable
    Language English
    Publishing date 2015-06-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0122909
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Emergence of new virulent populations of apple scab from nonagricultural disease reservoirs.

    Lemaire, Christophe / De Gracia, Marie / Leroy, Thibault / Michalecka, Monika / Lindhard-Pedersen, Hanne / Guerin, Fabien / Gladieux, Pierre / Le Cam, Bruno

    The New phytologist

    2015  Volume 209, Issue 3, Page(s) 1220–1229

    Abstract: Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used ... ...

    Abstract Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used multilocus microsatellite typing, molecular epidemiology tools and a large collection of isolates from cultivated, wild and ornamental apples to investigate the origin of new virulent populations of Venturia inaequalis, an ascomycete fungus causing apple scab on varieties carrying the Rvi6 resistance gene. We demonstrated a common origin at the European scale of populations infecting apples (Malus × domestica) carrying the Rvi6 resistance and Malus floribunda, the progenitor of the Rvi6 resistance. Demographic modeling indicated that the Rvi6-virulent lineage separated several thousands of years ago from populations infecting non-Rvi6 hosts, without detectable gene flow between the two lineages. These findings show that 'breakdowns' of plant resistance genes can be caused by the selection and migration of virulent genotypes from standing genetic variation maintained in environmental disease reservoirs, here ornamental crabapples. This work stresses the need to take better account of pathogen diversity in resistance screenings of breeding lines and in resistance deployment strategies, in order to enhance sustainable disease management.
    MeSH term(s) Agriculture ; Ascomycota/genetics ; Ascomycota/pathogenicity ; Bayes Theorem ; Biological Evolution ; Discriminant Analysis ; Disease Reservoirs/microbiology ; Gene Flow ; Genetic Variation ; Haplotypes/genetics ; Malus/microbiology ; Microsatellite Repeats/genetics ; Multivariate Analysis ; Mutation/genetics ; Plant Diseases/microbiology ; Principal Component Analysis ; Virulence
    Language English
    Publishing date 2015-10-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 208885-x
    ISSN 1469-8137 ; 0028-646X
    ISSN (online) 1469-8137
    ISSN 0028-646X
    DOI 10.1111/nph.13658
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  3. Article ; Online: Population Genome Sequencing of the Scab Fungal Species

    Le Cam, Bruno / Sargent, Dan / Gouzy, Jérôme / Amselem, Joëlle / Bellanger, Marie-Noëlle / Bouchez, Olivier / Brown, Spencer / Caffier, Valérie / De Gracia, Marie / Debuchy, Robert / Duvaux, Ludovic / Payen, Thibaut / Sannier, Mélanie / Shiller, Jason / Collemare, Jérôme / Lemaire, Christophe

    G3 (Bethesda, Md.)

    2019  Volume 9, Issue 8, Page(s) 2405–2414

    Abstract: ... ...

    Abstract The
    MeSH term(s) Ascomycota/classification ; Ascomycota/genetics ; Computational Biology/methods ; Genome, Fungal ; Genomics/methods ; Molecular Sequence Annotation ; Phylogeny ; Plant Diseases/microbiology ; Polymorphism, Single Nucleotide ; Whole Genome Sequencing
    Language English
    Publishing date 2019-08-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2629978-1
    ISSN 2160-1836 ; 2160-1836
    ISSN (online) 2160-1836
    ISSN 2160-1836
    DOI 10.1534/g3.119.400047
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Emergence of new virulent populations of apple scab from nonagricultural disease reservoirs

    Lemaire, Christophe / De Gracia, Marie / Leroy, Thibault / Michalecka, Monika / Lindhard-Pedersen, Hanne / Guerin, Fabien / Gladieux, Pierre / Le Cam, Bruno

    New Phytologist (on line) 3 (209), 1220-1229. (2016)

    Abstract: Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used ... ...

    Abstract Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used multilocus microsatellite typing, molecular epidemiology tools and a large collection of isolates from cultivated, wild and ornamental apples to investigate the origin of new virulent populations of Venturia inaequalis, an ascomycete fungus causing apple scab on varieties carrying the Rvi6 resistance gene. We demonstrated a common origin at the European scale of populations infecting apples (Malus × domestica) carrying the Rvi6 resistance and Malus floribunda, the progenitor of the Rvi6 resistance. Demographic modeling indicated that the Rvi6-virulent lineage separated several thousands of years ago from populations infecting non-Rvi6 hosts, without detectable gene flow between the two lineages. These findings show that 'breakdowns' of plant resistance genes can be caused by the selection and migration of virulent genotypes from standing genetic variation maintained in environmental disease reservoirs, here ornamental crabapples. This work stresses the need to take better account of pathogen diversity in resistance screenings of breeding lines and in resistance deployment strategies, in order to enhance sustainable disease management.
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: How did host domestication modify life history traits of its pathogens?

    De Gracia, Marie / Cascales, Mathilde / Expert, Pascale / Bellanger, Marie-Noëlle / Le Cam, Bruno / Lemaire, Christophe

    Plos One 6 (10), . (2015)

    Abstract: Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis ... ...

    Abstract Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis during domestication of the apple. Life traits linked to fungal dispersal were compared between 60 strains that were sampled in domestic and wild habitats in Kazakhstan, the center of origin of both host and pathogen. Our two main findings are that transition from wild to agro-ecosystems was associated with an increase of both spore size and sporulation capacity; and that distribution of quantitative traits of the domestic population mostly overlapped with those of the wild population. Our results suggest that apple domestication had a considerable impact on fungal characters linked to its dispersal through selection from standing phenotypic diversity. We showed that pestification of V. inaequalis in orchards led to an enhanced allocation in colonization ability from standing variation in the wild area. This study emphasizes the potential threat that pathogenic fungal populations living in wild environments represent for durability of resistance in agro-ecosystems.
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article: How did host domestication modify life history traits of its pathogens?

    De Gracia, Marie / Cascales, Mathilde / Expert, Pascale / Bellanger, Marie-Noëlle / Le Cam, Bruno / Lemaire, Christophe

    Plos One 6 (10), . (2015)

    Abstract: Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis ... ...

    Abstract Understanding evolutionary dynamics of pathogens during domestication of their hosts and rise of agro-ecosystems is essential for durable disease management. Here, we investigated changes in life-history traits of the fungal pathogen Venturia inaequalis during domestication of the apple. Life traits linked to fungal dispersal were compared between 60 strains that were sampled in domestic and wild habitats in Kazakhstan, the center of origin of both host and pathogen. Our two main findings are that transition from wild to agro-ecosystems was associated with an increase of both spore size and sporulation capacity; and that distribution of quantitative traits of the domestic population mostly overlapped with those of the wild population. Our results suggest that apple domestication had a considerable impact on fungal characters linked to its dispersal through selection from standing phenotypic diversity. We showed that pestification of V. inaequalis in orchards led to an enhanced allocation in colonization ability from standing variation in the wild area. This study emphasizes the potential threat that pathogenic fungal populations living in wild environments represent for durability of resistance in agro-ecosystems.
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article: Emergence of new virulent populations of apple scab from nonagricultural disease reservoirs

    Lemaire, Christophe / De Gracia, Marie / Leroy, Thibault / Michalecka, Monika / Lindhard-Pedersen, Hanne / Guerin, Fabien / Gladieux, Pierre / Le Cam, Bruno

    New Phytologist (on line) 3 (209), 1220-1229. (2016)

    Abstract: Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used ... ...

    Abstract Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used multilocus microsatellite typing, molecular epidemiology tools and a large collection of isolates from cultivated, wild and ornamental apples to investigate the origin of new virulent populations of Venturia inaequalis, an ascomycete fungus causing apple scab on varieties carrying the Rvi6 resistance gene. We demonstrated a common origin at the European scale of populations infecting apples (Malus × domestica) carrying the Rvi6 resistance and Malus floribunda, the progenitor of the Rvi6 resistance. Demographic modeling indicated that the Rvi6-virulent lineage separated several thousands of years ago from populations infecting non-Rvi6 hosts, without detectable gene flow between the two lineages. These findings show that 'breakdowns' of plant resistance genes can be caused by the selection and migration of virulent genotypes from standing genetic variation maintained in environmental disease reservoirs, here ornamental crabapples. This work stresses the need to take better account of pathogen diversity in resistance screenings of breeding lines and in resistance deployment strategies, in order to enhance sustainable disease management.
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  8. Article: Emergence of new virulent populations of apple scab from nonagricultural disease reservoirs

    Lemaire, Christophe / De Gracia, Marie / Leroy, Thibault / Michalecka, Monika / Lindhard‐Pedersen, Hanne / Guerin, Fabien / Gladieux, Pierre / Le Cam, Bruno

    new phytologist

    Volume v. 209,, Issue no. 3

    Abstract: Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used ... ...

    Abstract Plant pathogens adapt readily to new crop varieties in agrosystems, and it is crucial to understand the factors underlying the epidemic spread of new virulent strains if we are to develop more efficient strategies to control them. In this study we used multilocus microsatellite typing, molecular epidemiology tools and a large collection of isolates from cultivated, wild and ornamental apples to investigate the origin of new virulent populations of Venturia inaequalis, an ascomycete fungus causing apple scab on varieties carrying the Rvi6 resistance gene. We demonstrated a common origin at the European scale of populations infecting apples (Malus × domestica) carrying the Rvi6 resistance and Malus floribunda, the progenitor of the Rvi6 resistance. Demographic modeling indicated that the Rvi6‐virulent lineage separated several thousands of years ago from populations infecting non‐Rvi6 hosts, without detectable gene flow between the two lineages. These findings show that ‘breakdowns’ of plant resistance genes can be caused by the selection and migration of virulent genotypes from standing genetic variation maintained in environmental disease reservoirs, here ornamental crabapples. This work stresses the need to take better account of pathogen diversity in resistance screenings of breeding lines and in resistance deployment strategies, in order to enhance sustainable disease management.
    Keywords breeding lines ; virulent strains ; genes ; gene flow ; microsatellite repeats ; genotype ; disease control ; models ; Malus floribunda ; Venturia inaequalis ; fungi ; genetic variation ; disease reservoirs ; hosts ; virulence ; cultivars ; molecular epidemiology ; apples ; plant pathogens
    Language English
    Document type Article
    ISSN 0028-646X
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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