Carreel Françoise, Martin Guillaume, Ravel Sébastien, Roussel Véronique, Pagès Christine, Habas Rémy, Cantagrel Théo, Guiougou Chantal, Delos Jean-Marie Eric, Hervouet Catherine, Mournet Pierre, D'Hont Angélique, Yahiaoui Nabila, Salmon Frédéric. 2024. Identification of Resistance QTLs to Black Leaf Streak Disease (Due to Pseudocercospora fijiensis) in Diploid Bananas (Musa acuminata). Horticulturae, 10, n.spéc. Developments in the Genetics and Breeding of Banana Species:608, 18 p.
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Résumé : Black Leaf Streak Disease (BLSD), caused by the fungus Pseudocercospora fijiensis, is a recent pandemic and the most economically and environmentally important leaf disease of banana. To assist breeding of varieties with durable resistance to the rapidly evolving P. fijiensis, we used a diploid genitor 'IDN 110' with partial resistance to BLSD to search for QTLs. We assessed diploid progeny of 73 hybrids between 'IDN 110' and the diploid cultivar 'Khai Nai On', which is susceptible to BLSD. Hybrids were phenotyped with artificial inoculation under controlled conditions. This method allowed us to focus on resistance in the early stages of the interaction already identified as strongly influencing BLSD epidemiology. Progeny were genotyped by sequencing. As both parents are heterozygous for large reciprocal translocations, the distribution of recombination was assessed and revealed regions with low recombination rates. Fourteen non-overlapping QTLs of resistance to BLSD were identified of which four main QTLs from the 'IDN110' parent, located on chromosomes 06, 07, 08, and 09, were shown to be of interest for marker-assisted selection. Genes that underline those four QTLs are discussed in the light of previous literature.
Mots-clés Agrovoc : Musa acuminata, résistance aux maladies, Musa, Pseudocercospora, épidémiologie, maladie des raies noires, phénotype, Musa (bananes), diploïdie, locus des caractères quantitatifs, variété, carte génétique, contrôle de maladies
Mots-clés géographiques Agrovoc : Guadeloupe, France
Mots-clés libres : Banana, Black leaf streak disease, Black sigatoka, Musa, Pseudocercospora fijiensis, QTL
Agences de financement hors UE : Office Français de la Biodiversité, Compte d'affectation spécial Développement agricole et rural
Projets sur financement : (FRA) DUREBAN, (FRA) Seeds
Auteurs et affiliations
- Carreel Françoise, CIRAD-BIOS-UMR AGAP (FRA) - auteur correspondant
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Martin Guillaume, CIRAD-BIOS-UMR AGAP (GLP)
ORCID: 0000-0002-1801-7500
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Ravel Sébastien, CIRAD-BIOS-UMR PHIM (FRA)
ORCID: 0000-0001-6663-782X
- Roussel Véronique, CIRAD-BIOS-UMR PHIM (FRA)
- Pagès Christine, CIRAD-BIOS-UMR PHIM (FRA)
- Habas Rémy, CIRAD-BIOS-UMR PHIM (FRA)
- Cantagrel Théo, Université de Montpellier (FRA)
- Guiougou Chantal, CIRAD-BIOS-UMR AGAP (GLP)
- Delos Jean-Marie Eric, CIRAD-BIOS-UMR AGAP (GLP)
- Hervouet Catherine, CIRAD-BIOS-UMR AGAP (FRA)
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Mournet Pierre, CIRAD-BIOS-UMR AGAP (FRA)
ORCID: 0000-0001-8011-8647
- D'Hont Angélique, CIRAD-BIOS-UMR AGAP (FRA)
- Yahiaoui Nabila, CIRAD-BIOS-UMR AGAP (FRA)
- Salmon Frédéric, CIRAD-BIOS-UMR AGAP (GLP)
Source : Cirad-Agritrop (https://agritrop.cirad.fr/609644/)
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