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- Title
Co-Localization of Resistance and Metabolic Quantitative Trait Loci on Carrot Genome Reveals Fungitoxic Terpenes and Related Candidate Genes Associated with the Resistance to Alternaria dauci.
- Authors
Koutouan, Claude Emmanuel; Le Clerc, Valérie; Suel, Anita; Hamama, Latifa; Claudel, Patricia; Halter, David; Baltenweck, Raymonde; Hugueney, Philippe; Chich, Jean-François; Moussa, Sitti Anlati; Champlain, Clémentine; Huet, Sébastien; Voisine, Linda; Pelletier, Sandra; Balzergue, Sandrine; Chevalier, Wilfried; Geoffriau, Emmanuel; Briard, Mathilde
- Abstract
Alternaria leaf blight, caused by the fungus Alternaria dauci, is the most damaging foliar disease of carrot. Some carrot genotypes exhibit partial resistance to this pathogen and resistance Quantitative Trait Loci (rQTL) have been identified. Co-localization of metabolic QTL and rQTL identified camphene, α-pinene, α-bisabolene, β-cubebene, caryophyllene, germacrene D and α-humulene as terpenes potentially involved in carrot resistance against ALB. By combining genomic and transcriptomic analyses, we identified, under the co-localization regions, terpene-related genes which are differentially expressed between a resistant and a susceptible carrot genotype. These genes include five terpene synthases and twenty transcription factors. In addition, significant mycelial growth inhibition was observed in the presence of α-humulene and caryophyllene.
- Subjects
LOCUS (Genetics); CARROTS; ALTERNARIA; TERPENES; GENOMICS; GENOMES
- Publication
Metabolites (2218-1989), 2023, Vol 13, Issue 1, p71
- ISSN
2218-1989
- Publication type
Article
- DOI
10.3390/metabo13010071