Catherine Abadie

Catherine Abadie
Cirad - La recherche agronomique pour le développement | CIRAD · Unité Mixte de Recherche Biologie et Génétique des Interactions Plantes-Parasites (BGPI)

About

52
Publications
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761
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April 2006 - present
Cirad - La recherche agronomique pour le développement
Position
  • Researcher

Publications

Publications (52)
Article
Plant pathogens often adapt to plant genetic resistance so characterization of the architecture underlying such an adaptation is required to understand the adaptive potential of pathogen populations. Erosion of banana quantitative resistance to a major leaf disease caused by polygenic adaptation of the causal agent, the fungus Pseudocercospora fiji...
Preprint
Plant pathogens often adapt to plant genetic resistance so characterization of the architecture under-lying such an adaptation is required to understand the adaptive potential of pathogen populations. Erosion of banana quantitative resistance to a major leaf disease caused by polygenic adaptation of the causal agent, the fungus Pseudocercospora fij...
Article
Full-text available
In Guadeloupe, a French overseas territory located in the Eastern Caribbean, infectious and non-infectious diseases, loss of biodiversity, natural disasters and global change threaten the health and well-being of animals, plants, and people. Implementing the“One Health” (OH) approach is crucial to reduce the archipelago’s vulnerability to these hea...
Article
Full-text available
In Guadeloupe, a French overseas territory located in the Eastern Caribbean, infectious and non-infectious diseases, loss of biodiversity, natural disasters and global change threaten the health and well-being of animals, plants, and people. Implementing the “One Health” (OH) approach is crucial to reduce the archipelago’s vulnerability to these he...
Article
Full-text available
Plant pathogens can adapt to quantitative resistance, eroding its effectiveness. The aim of this work was to reveal the genomic basis of adaptation to such a resistance in populations of the fungus Pseudocercospora fijiensis, a major devastating pathogen of banana, by studying convergent adaptation on different cultivars. Samples from P. fijiensis...
Article
Among the emerging fungal diseases threatening food security, the Pseudocercospora fijiensis fungus causing black leaf streak disease of banana is one of the most marked examples of a recent worldwide pandemic on a major crop. We assessed how this pathogen spread throughout the latest invaded region, i.e. Central America and the Caribbean. We retra...
Article
Full-text available
Black Leaf Streak Disease (BLSD) is the most severe foliar disease of banana and plantain. BLSD is caused by Pseudocercospora fi-jiensis , an ascomycete fungus which produces wind-borne spores responsible for its spatial dispersal. In order to evaluate the BLSD long-distance dispersal and to better understand the effect of environmental factors on...
Article
Full-text available
Understanding the mechanisms involved in pathogen adaptation to quantitative resistance in plants has a key role to play in establishing durable strategies for resistance deployment, especially in perennial crops. The erosion of quantitative resistance has been recently suspected in Cuba and the Dominican Republic for a major fungal pathogen of suc...
Article
Full-text available
Black leaf streak disease, or black Sigatoka, is caused by the fungus Pseudocercospora fijiensis, and has been identified as a major constraint to global production of banana and plantain. We fitted a climatic niche model (CLIMEX) for P. fijiensis to gain an understanding of the patterns of climate suitability, and hence hazard from this disease. W...
Article
Black leaf streak disease (BLSD), caused by the fungal pathogen Mycosphaerella fijiensis, is considered as the most destructive foliar disease of banana. To advance our knowledge of the dynamics of the disease at plant scale as well as of the components of varietal resistance, we designed, calibrated and evaluated a mechanistic model to simulate th...
Poster
Full-text available
Black Leaf Streak Disease (BLSD) is considered as the most serious threat of the banana production in the Latin American-Caribbean region. The cultivation of resistant hybrids is considered as an appropriate control practice for many growers. The BLSD severity at plant scale is closely related to the varietal susceptibility to BLSD and to the growt...
Article
Full-text available
Bananas are usually harvested at a green preclimacteric stage prior to sale. The preclimacteric phase is called green life (GL), which is defined as the number of days between harvesting and initiation of the natural ripening process. Sigatoka disease (SD) has previously been shown to influence the postharvest behaviour of banana fruit. This work w...
Article
Full-text available
Introduction. Bananas are harvested at the green preclimacteric stage prior to sale. The time between harvest and the initiation of the natural ripening process is called green life. Black Leaf Streak Disease and Sigatoka Disease are the main foliar diseases affecting banana production. Sigatoka Disease (SD) is due to Mycosphaerella musicola, which...
Conference Paper
Black sigatoka (BS), caused by the fungal pathogen Mycosphaerella �- jiensis, is considered as the most destructive foliar disease of banana and plantains. Controlling BS is essential to the export production because of the important damages caused to fruit quality. The main current control consists in frequent aerial fungicide applications and del...
Article
Reconstructing and characterizing introduction routes is a key step towards understanding the ecological and evolutionary factors underlying successful invasions and disease emergence. Here, we aimed to decipher scenarios of introduction and stochastic demographic events associated with the global spread of an emerging disease of bananas caused by...
Article
Full-text available
Background and aims Banana (Musa acuminata) is a crop contributing to global food security. Many varieties lack resistance to biotic stresses, due to sterility and narrow genetic background. The objective of this study was to develop an expressed sequence tag (EST) database of transcripts expressed during compatible and incompatible banana–Mycospha...
Article
Full-text available
Introduction. Black Leaf Streak Disease (BLSD) is regarded as the most economically important threat that the banana industry has to face. Effectively, this foliar disease affects leaf photosynthesis but, above all, reduces the greenlife of fruits, that cannot be exported in cases of severe infestation. Main characteristics of Black Leaf Streak Dis...
Article
Full-text available
Dispersal processes of fungal plant pathogens can be inferred from analysis of spatial genetic structures resulting from recent range expansion. The relative importance of long-distance dispersal (LDD) events vs. gradual dispersal in shaping population structures depends on the geographical scale considered. The fungus Mycosphaerella fijiensis, pat...
Article
Full-text available
Mycosphaerella fijiensis Morelet (anamorph Pseudocercospora fijiensis Morelet), the causal agent of black Sigatoka disease of banana, is considered to be the greatest economical threat for export-banana cultivation throughout the world because most cultivars are highly susceptible. The disease has a worldwide distribution throughout the humid tropi...
Article
Full-text available
Mycosphaerella leaf spot diseases of banana caused by Mycosphaerella musicola (Sigatoka leaf spot, SLS) and M. fijiensis (black leaf streak, BLS) are very destructive. The cultivation of resistant banana clones appears to be the most appropriate means to combat disease because genetic resistance is usually more durable than chemical control. Since...
Article
Full-text available
The monoculture of banana can have a serious detrimental impact on the environment as pesticide treatments can lead to surface and groundwater pollution. Different approaches based on IPM (integrated pest management) have been developed in the French West Indies to reduce the use of the pesticides in banana cultivation. These methods have been deve...
Article
Leaf spot diseases of banana caused by Mycosphaerella musicola or Mycosphaerella fijiensis are the main constraints in commercial plantations in most banana-producing countries. In humid, high-rainfall conditions, plantation production of dessert bananas for export can only be achieved through intensive chemical control. The development of chemical...
Article
Full-text available
Sigatoka disease (SD) of bananas is caused by the pathogenic fungus Mycosphaerella musicola Leach. This disease provokes necrotic lesions on leaves and serious infestations can lead to a substantial reduction in the leaf area of infected plants and thus to yield losses. In addition to these effects on yield, SD was found to have an impact on fruit...
Article
Full-text available
Introduction. This protocol aims to diagnose under laboratory conditions the main Mycosphaerella spp. pathogens of bananas and plantains. The three pathogens Mycosphaerella fijiensis (anamorph Paracercospora fijiensis), M. musicola ( anamorph Pseudocercospora musae) and M. eumusae ( anamorph Pseudocercospora eumusae) are, respectively, the causal a...
Article
Full-text available
Introduction. This protocol aims at (i) analysing the nature of host-parasite interactions (resistance or susceptibility), and (ii) studying the variability of the pathogenicity of different pathogen populations (intra/inter-specific) with regard to both virulence and aggressiveness using artificial inoculation with Mycosphaerella fijiensis or Myco...
Conference Paper
Full-text available
Mycosphaerella leaf spot diseases of bananas caused by Mycosphaerella musicola (Sigatoka Disease, SD) and Mycosphaerella fijiensis (Black Leaf Streak Disease, BLSD) are the most destructive leaf spot diseases of bananas. The cultivation of resistant varieties appears as the most appropriate control because it is more durable than the chemical contr...
Article
Sixty strains of Fusarium oxysporum were characterized by (i) in vitro growth parameter estimates on four carbon sources and (ii) vegetative compatibility grouping. Growth was assessed by measuring optical density changes of fungal cultures in microtiter plates. Principal component analyses of growth parameter estimates permitted a good discriminat...
Chapter
Full-text available
Les bananiers, cultivés dans plus de 120 pays de la zone tropicale, constituent une base alimentaire majeure pour plus de 400 millions de personnes. Les cercosporioses, maladies foliaires graves dues à Mycosphaerella fijiensis ou M. musicola, affectent la totalité des zones de culture et sont considérées comme une des contraintes majeures pour les...
Conference Paper
Full-text available
The genetic structure of populations of Mycosphaerella fijiensis was studied by sampling 13 populations from banana plantations in Latin America and Caribbean region and Africa. The isolates were analysed using CAPS (Cleaved Amplified Polymorphic Sequences) and microsatellite molecular markers. The highest levels of genetic diversity in the Latin A...
Article
Full-text available
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 in...
Article
Full-text available
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 in...
Article
Full-text available
Introduction. Plantain is an important crop for food safety in sub-Saharan Africa. In order to treat the research priorities better on a hierarchical basis according to the producer constraints, a permanent observation unit was placed within the framework of an interdisciplinary approach. Materials and methods. A sampling in banana plantations...
Conference Paper
The ascomycete fungus #Mycosphaerella fijiensis# (anamorph #Paracercospora fijiensis#) causes black leaf streak disease (BLSD), the most destructive leaf disease of bananas. Knowledge of the extent and distribution of variability within #M. fijiensis# is necessary for breeding and managment of BLSD resistance. Study of population genetic structure...
Article
Full-text available
Our aim was to assess the level of suppressiveness to fusarium wilt of a palm grove soil from Ivory Coast in relation to the cultivation of a commonly used leguminous cover-plant, Pueraria javanica. The cultivation of P. javanica resulted after 49 and 230d in a significant increase in the amount of suppressiveness. This increase was correlated with...
Article
Full-text available
Seven, treatments were applied (manual weeding, planting with Pueraria, Brachiaria, Acacia, oil palms susceptible to or tolerant of vascular will and empty bunch application) to soils either inoculated or not with 1 × 10 4 Fusarium oxysporumf.sp. elaeidis spores.ml -1. After a year, soil receptivity to oil palm vascular will and soil microbiologica...

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