02110nam a2200265Ia 4500 MX-MdCICY 20260521091726.0 CICY B-20206 Colletotrichum brevisporum causing anthracnose of papaya (Carica papaya L.)in Mexico Canadian Journal of Plant Pathology, 45(4), p.360-366, 2023 Papaya fruit cv. Maradol showing typical symptoms of anthracnose were observed in a commercial orchard located in the municipality of Pinotepa Nacional at the coastal region of Oaxaca, Mexico in September 2020. The incidence rate of anthracnose reached 60 percent . The symptoms consisted of sunken, water-soaked lesions with salmon-coloured conidia masses on the surface of papaya fruit. The aim of this study was to identify the causal agent of papaya anthracnose based on the phylogenetic analysis of four concatenated datasets. The isolate exhibited sparse white to greyish aerial mycelium and clearly shaped concentric rings with exudate of orange conidia on potato dextrose agar. The fungus was identified as Colletotrichum brevisporum using sequence data of the internal transcribed spacer (ITS)region, and part of the actin (act), glyceraldehyde-3-phosphate dehydrogenase (gapdh), and chitin synthase (chs-1)genes. The fungus isolated from diseased fruit produced lesions on wounded fruit and unwounded fruit. The pathogen was re-isolated from lesions on inoculated fruit to fulfill Koch's postulates. To our knowledge, this is the first report of C. brevisporum causing anthracnose disease on papaya fruit in Mexico. ANTHRACNOSE COLLETOTRICHUM BREVISPORUM PAPAYA PATHOGENICITY PHYLOGENY Pacheco-Esteva, M. C. Soto-Castro, D. Vásquez-López, A. Tovar-Pedraza, J. M. https://drive.google.com/file/d/149j48t3KwTJSBDzeTD5ezD-Y2M6cxmCc/view?usp=drivesdk Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx Loc REF1 250602s9999 xx |||||s2 |||| ||und|d 30248 30248 0 0 Loc 0 0 F1 CICY CICY RE 2025-06-25 0 B-20206 2025-06-25 16:24:44 2025-06-25 REF1