Maize lethal necrosis

Maize plants showing maize lethal necrosis (MLN). This disease results from combined infection by two viruses: maize chlorotic mottle virus (MCMV) and either maize dwarf mosaic virus (MDMV) or wheat streak mosaic virus (WSMV). No lethal necrosis will develop if only MDMV and WSMV occur together. Infected plants are short. The leaves show chlorosis and die at about flowering time.

 

Photo credit: CIMMYT.

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