First report of Rhizopus stolonifer causing fruit rot in jackfruit (Artocarpus heterophyllus) in Mexico.
The jackfruit tree (Artocarpus heterophyllus) is a popular tropical tree because its flowers, fruits, and seeds have nutritional properties. In July 2018, 10 young diseased fruits were collected in the state of Nayarit, Mexico. Diseased fruits exhibited visible soft rot with cottony white mycelia with profuse black sporulation which, in some cases, covered the entire fruit and often contained a white fringe formed by young sporangia on the lesion edge. The causal pathogen was isolated and identified as Rhizopus stolonifer based on morphological characteristics and pathogenicity test, as well as the sequence analysis of the 28S large ribosomal subunit (LSU) and phylogenetic analysis. This is thought to be the first report of soft rot in jackfruit caused by R. stolonifer in Mexico.