MyrotheciumLeafSpot Of Watermelon: What Is WatermelonMyrotheciumLeafSpot. There's a fungus among us! Myrotheciumleafspot of watermelon is a mouthful to say but, luckily, it does minimal damage to those sweet, juicy fruits. This is the first report of Myrotheciumleafspot on watermelon naturally occurring in commercial greenhouses.(2003) found that the M. roridum infecting watermelon produced white colonies with flat mycelium producing black sporodochia. Sections of symptomatic tissue were plated, and M. roridum was reisolated. Although M. roridum is a common pathogen of melons and cucumber, to our knowledge, this is the first field report of a leafspot caused by M. roridum on watermelon in the United States. Discover the impact of Myrothecium roridum on watermelon and other cucurbits. Explore susceptibility levels and differential resistance among cultivars. Uncover the truth about interior lesions and natural infection. Detection of Myrotheciumleafspot, a new disease of watermelon. The Plant Pathology Journal, 19(4), 200–202. Pathogen: Myrothecium roridum. Hosts: Lamium, Molucella, Rudbeckia, Salvia, New Guinea impatiens. Symptoms: This disease causes leafspots, concentric rings may develop in the lesions. 1. Leafspot on watermelon caused by Myrothecium roridum. (A) Early phase showing irregular shaped lesions and a yellow halo around the perimeter. (B) Shot-hole appearance of leafspots. Myrothecium roridum LeafSpot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak. 2017. First report of leafspot caused by Myrothecium roridum on watermelon in Pakistan. Plant Dis. 101 (6): 1053.2003. Detection of Myrotheciumleafspot, a new disease of watermelon. Plant Pathol. J. 19: 200–202. Recently, the incidence of Myrotheciumleafspot, a foliar disease of watermelon, has increased in South Carolina.Another important finding was that none of the isolates were identified as P. roridum, the species considered to be the only causal agent of Myrotheciumleafspot on cucurbits. Seebold KW, Langston DB (2005) First report of a leafspot and stem canker caused by Myrothecium roridum on watermelon in the United States. Plant Disease 89:342. Silva JC, Meyer MC (2006) Mancha de mirotécio em algodoeiro causada por Myrothecium roridum. 1988. Myrotheciumleafspot of bittergourd in Pakistan. Pakistan Journal of Agricultural Research, 9: 598-600.2005. First report of a leafspot and stem canker caused by Myrothecium roridum on watermelon in the United States.
