Pineapple mycobiome related to fruitlet core rot occurrence and the influence of fungal species dispersion patterns

Vignassa Manon, Meile Jean-Christophe, Chiroleu Frédéric, Soria Christian, Leneveu-Jenvrin Charlène, Schorr-Galindo Sabine, Chillet Marc. 2021. Pineapple mycobiome related to fruitlet core rot occurrence and the influence of fungal species dispersion patterns. Journal of Fungi, 7 (3), n.spéc. Fungal Biodiversity and Ecology:175, 29 p.

Url - autres données associées : https://CRAN.R-project.org/package=factoextra

Quartile : Q1, Sujet : MYCOLOGY / Quartile : Q2, Sujet : MICROBIOLOGY

Résumé : Fruitlet Core Rot (FCR) is a fungal disease that negatively impacts the quality of pineapple, in particular the 'Queen Victoria' cultivar. The main FCR causal agent has been identified as Fusariumananatum. This study focused on the correlation between FCR disease occurrence, fungal diversity, and environmental factors. FCR incidence and fungal species repartition patterns were spatially contextualized with specific surrounding parameters of the experimental plots. The mycobiome composition of healthy and diseased fruitlets was compared in order to search for potential fungal markers. A total of 240 pineapple fruits were sampled, and 344 fungal isolates were identified as belonging to 49 species among 17 genera. FCR symptom distribution revealed a significant gradient that correlated to that of the most abundant fungal species. The association of wind direction and the position of proximal cultivated crops sharing pathogens constituted an elevated risk of FCR incidence. Five highly represented species were assayed by Koch's postulates, and their pathogenicity was confirmed. These novel pathogens belonging to Fusariumfujikuroi and Talaromycespurpureogenus species complexes were identified, unravelling the complexity of the FCR pathosystem and the difficulty of apprehending the pathogenesis over the last several decades. This study revealed that FCR is an airborne disease characterized by a multi-partite pathosystem.

Mots-clés Agrovoc : maladie des plantes, maladie fongique, Ananas comosus, pourriture, pouvoir pathogène

Mots-clés géographiques Agrovoc : La Réunion, France

Mots-clés complémentaires : mycobiome, fusarium ananatum

Mots-clés libres : Fusarium verticillioides, Pathogenic fungi, Pineapple disease, Talaromyces

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Regional Development Fund

Auteurs et affiliations

• Vignassa Manon, CIRAD-PERSYST-UMR Qualisud (REU) - auteur correspondant
• Meile Jean-Christophe, CIRAD-PERSYST-UMR Qualisud (REU) ORCID: 0000-0002-6747-2104
• Chiroleu Frédéric, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0002-4874-5357
• Soria Christian, CIRAD-PERSYST-UMR Qualisud (REU) ORCID: 0000-0002-7235-7872
• Leneveu-Jenvrin Charlène, Université de la Réunion (REU)
• Schorr-Galindo Sabine, UM2 (FRA)
• Chillet Marc, CIRAD-PERSYST-UMR Qualisud (REU)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/598593/)

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