Fusarium rot of melon is caused by several Fusarium species. (13th December 2020)

• Record Type: Journal Article
• Authors: Medeiros Araújo, Maria B.; Moreira, Gláucia M.; Nascimento, Luan Vítor; Nogueira, Geovane de Almeida; Nascimento, Selma Rogéria de C.; Pfenning, Ludwig H.; Ambrósio, Márcia Michelle de Q.
• Is Part Of: Plant pathology. Volume 70:Number 3(2021)
• Page Start: 712
• Page End: 721
• Publication Date: 2020-12-13
• Subjects: Cucumis melo -- molecular phylogeny -- pathogenicity -- postharvest disease; Agricultural pests -- Periodicals; Plant diseases -- Periodicals; 632
• DOI: 10.1111/ppa.13328
• Languages: English
• ISSNs: 0032-0862

Abstract

Abstract: Fusarium rot of melon, caused by species of the genus Fusarium, has become an important postharvest disease for many Brazilian producers. Due to the delayed onset of symptoms, this disease is often only detected when fruits arrive at the importing country, thus generating economic loss for the exportation of the fruit. This study was developed with the aim of investigating which Fusarium species cause fruit rot in melon and to evaluate any differences in aggressiveness and development of symptoms. Species were identified through phylogenetic analysis of two loci and morphological markers. The 28 isolates obtained from diseased melon fruits of different commercial cultivars were identified as Fusarium falciforme (FSSC), F . sulawesiense, F. pernambucanum (FIESC), and F. kalimantanense (FOSC). Three isolates belong to a new phylogenetic lineage within the F. fujikuroi species complex (FFSC). All isolates were tested for pathogenicity, and first symptoms of rot in Canary melon were observed 2 days after inoculation. Isolates of F. falciforme and F. sulawesiense were shown to be more aggressive. Our results extend information on Fusarium species that cause fruit rot in melon and support the development of management strategies, as there is currently no efficient control for this disease. To our knowledge, this is the first report of the occurrence of species of the FSSC, FOSC, and FFSC from muskmelon fruits in Brazil. Abstract : Fusarium rot of melon is caused by the species F. falciforme, F. sulawesiense, F. pernambucanum, F. kalimantanense, and a new phylogenetic lineage within the Fusarium fujikuroi species complex.