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Maize lethal necrosis disease (MLN disease, MLND, corn lethal necrosis) is a viral disease affecting maize (corn) predominantly in East Africa, Southeast Asia and South America, which was recognised in 2010. It is caused by simultaneous infection with two viruses, maize chlorotic mottle virus (MCMoV) of the Tombusviridae family and a virus from the Potyviridae group: maize dwarf mosaic virus (MDMV), wheat streak mosaic virus (WSMV), sugarcane mosaic virus (SCMV), Johnsongrass mosaic virus (JGMV) or others.
Spread of the disease is driven by expansion in the range of maize chlorotic mottle virus, which is thought to be transmitted by species of thrips including maize thrips (Frankliniella williamsi) and possibly western flower thrips, Frankliniella occidentalis. The potyviruses responsible for MLN are transmitted by several species of aphids and, in the case of wheat streak mosaic virus, wheat curl mite. Disease is associated with the presence of maize thrips and the growth of several crops of maize annually.
In late 2014, it was reported that MLND could cut Kenya's maize production by as much as 30%. In early March 2015, the middle of the rainy season, losses were estimated at 10%.
referencePosted on 28 Sep 2024, this text provides information on Miscellaneous in Disease related to Disease. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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