Wind-mediated spread of Rice Yellow Mottle Virus (RYMV) in irrigated rice crops

S. Sarra, P. Oevering, S. Guindo, D. Peters

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A study was carried out to demonstrate that Rice yellow mottle virus (RYMV), a virus known to be transmitted by beetles, can spread between rice plants by direct leaf contact caused by wind. Almost all healthy plants surrounding an infected plant became infected when exposed to a fan blowing for 15 min at a distance of 50 cm. Spread of RYMV by plant contact, mediated by wind, was also demonstrated in field experiments, the extent of spread depending on plant density. Infection was almost 10 times higher in plots with a density of 33 plants m(-2) than in plots with 16 plants m(-2). Less spread was observed in plots protected by 1.5 m high windscreens. It is suggested that wind-mediated spread of RYMV may result from abrasive contact between leaves of plants.
Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalPlant Pathology
Issue number2
Publication statusPublished - 2004


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