Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis
The worldwide destructive epidemic of the fungus #Mycosphaerella fijiensis# on banana started recently, spreading from South-East Asia. The founder effects detected in the global population structure of #M. fijiensis# reflected rare migration events among continents through movements of infected plant material. The main objective of this work was to infer gene flow and dispersal processes of #M. fijiensis# at the continental scale from population structure analysis in recently invaded regions. Samples of isolates were collected from banana plantations in 13 countries in Latin America and the Caribbean and in Africa. The isolates were analysed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and microsatellite molecular markers. The results indicate that a high level of genetic diversity was maintained at the plantation and the plant scales. The loci were at gametic equilibrium in most of the samples analysed, supporting the hypothesis of the existence of random-mating populations of #M. fijiensis#, even at the plant scale. A low level of gene diversity was observed in some populations from the Africa and Latin America-Caribbean regions. Nearly half the populations analysed showed a significant deviation from mutation-drift equilibrium with gene diversity excess. Finally, a high level of genetic differentiation was detected between populations from Africa (Fst = 0.19) and from the Latin America-Caribbean region (Fst = 0.30). These results show that founder effects accompanied the recent invasion of #M. fijiensis# in both regions, suggesting stochastic spread of the disease at the continental scale. This spread might be caused by either the limited dispersal of ascospores or by movements of infected plant material.
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dig-cirad-fr-5187622024-01-28T12:12:24Z http://agritrop.cirad.fr/518762/ http://agritrop.cirad.fr/518762/ Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis. Rivas Gonzalo Galilaeo, Zapater Marie-Françoise, Abadie Catherine, Carlier Jean. 2004. Molecular Ecology, 13 (2) : 471-482.https://doi.org/10.1046/j.1365-294X.2003.02043.x <https://doi.org/10.1046/j.1365-294X.2003.02043.x> Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis Rivas, Gonzalo Galilaeo Zapater, Marie-Françoise Abadie, Catherine Carlier, Jean eng 2004 Molecular Ecology H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 Afrique Caraïbes Amérique latine Asie du Sud-Est http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 The worldwide destructive epidemic of the fungus #Mycosphaerella fijiensis# on banana started recently, spreading from South-East Asia. The founder effects detected in the global population structure of #M. fijiensis# reflected rare migration events among continents through movements of infected plant material. The main objective of this work was to infer gene flow and dispersal processes of #M. fijiensis# at the continental scale from population structure analysis in recently invaded regions. Samples of isolates were collected from banana plantations in 13 countries in Latin America and the Caribbean and in Africa. The isolates were analysed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and microsatellite molecular markers. The results indicate that a high level of genetic diversity was maintained at the plantation and the plant scales. The loci were at gametic equilibrium in most of the samples analysed, supporting the hypothesis of the existence of random-mating populations of #M. fijiensis#, even at the plant scale. A low level of gene diversity was observed in some populations from the Africa and Latin America-Caribbean regions. Nearly half the populations analysed showed a significant deviation from mutation-drift equilibrium with gene diversity excess. Finally, a high level of genetic differentiation was detected between populations from Africa (Fst = 0.19) and from the Latin America-Caribbean region (Fst = 0.30). These results show that founder effects accompanied the recent invasion of #M. fijiensis# in both regions, suggesting stochastic spread of the disease at the continental scale. This spread might be caused by either the limited dispersal of ascospores or by movements of infected plant material. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/518762/1/document_518762.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1046/j.1365-294X.2003.02043.x 10.1046/j.1365-294X.2003.02043.x info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-294X.2003.02043.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1046/j.1365-294X.2003.02043.x |
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H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 |
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H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 Rivas, Gonzalo Galilaeo Zapater, Marie-Françoise Abadie, Catherine Carlier, Jean Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
description |
The worldwide destructive epidemic of the fungus #Mycosphaerella fijiensis# on banana started recently, spreading from South-East Asia. The founder effects detected in the global population structure of #M. fijiensis# reflected rare migration events among continents through movements of infected plant material. The main objective of this work was to infer gene flow and dispersal processes of #M. fijiensis# at the continental scale from population structure analysis in recently invaded regions. Samples of isolates were collected from banana plantations in 13 countries in Latin America and the Caribbean and in Africa. The isolates were analysed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and microsatellite molecular markers. The results indicate that a high level of genetic diversity was maintained at the plantation and the plant scales. The loci were at gametic equilibrium in most of the samples analysed, supporting the hypothesis of the existence of random-mating populations of #M. fijiensis#, even at the plant scale. A low level of gene diversity was observed in some populations from the Africa and Latin America-Caribbean regions. Nearly half the populations analysed showed a significant deviation from mutation-drift equilibrium with gene diversity excess. Finally, a high level of genetic differentiation was detected between populations from Africa (Fst = 0.19) and from the Latin America-Caribbean region (Fst = 0.30). These results show that founder effects accompanied the recent invasion of #M. fijiensis# in both regions, suggesting stochastic spread of the disease at the continental scale. This spread might be caused by either the limited dispersal of ascospores or by movements of infected plant material. |
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article |
topic_facet |
H20 - Maladies des plantes F30 - Génétique et amélioration des plantes Musa (bananes) Musa (plantains) Mycosphaerella fijiensis maladie fongique spore fongique flux de gènes ressource génétique marqueur génétique infection microsatellite génétique moléculaire structure de la population génétique des populations http://aims.fao.org/aos/agrovoc/c_29128 http://aims.fao.org/aos/agrovoc/c_29127 http://aims.fao.org/aos/agrovoc/c_27259 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_37331 http://aims.fao.org/aos/agrovoc/c_3218 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_27577 http://aims.fao.org/aos/agrovoc/c_6115 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_1320 http://aims.fao.org/aos/agrovoc/c_4221 http://aims.fao.org/aos/agrovoc/c_7260 |
author |
Rivas, Gonzalo Galilaeo Zapater, Marie-Françoise Abadie, Catherine Carlier, Jean |
author_facet |
Rivas, Gonzalo Galilaeo Zapater, Marie-Françoise Abadie, Catherine Carlier, Jean |
author_sort |
Rivas, Gonzalo Galilaeo |
title |
Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
title_short |
Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
title_full |
Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
title_fullStr |
Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
title_full_unstemmed |
Founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas Mycosphaerella fijiensis |
title_sort |
founder effects and stochastic dispersal at the continental scale of the fungal pathogen of bananas mycosphaerella fijiensis |
url |
http://agritrop.cirad.fr/518762/ http://agritrop.cirad.fr/518762/1/document_518762.pdf |
work_keys_str_mv |
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