Rice ragged stunt virus Rice ragged stunt virus Rice ragged stunt virus (RRSV) is a plant pathogenic virus of the family Reoviridae. RRSV, vectored by the brown planthopper (BPH) (Delphacidae: "Nilaparvata lugens"), causes ragged stunt disease of rice ("Oryza" spp., especially "Oryza sativa"). The virus, first described by Hibino, Ling and Shikata, is also less commonly known as rice infectious gall virus. RRSV has polyhedral particles about 50 nm in diameter possessing spikes (and perhaps a complete outer shell) to a diameter of 65 nm. The particles contain double-stranded RNA in eight segments. RRSV can only infect plants in the family Gramineae, i.e. grasses
Rissoina oryza oblique. This species occurs in the Red Sea and in the South Pacific off the Fiji Islands. Rissoina oryza Rissoina oryza is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. The height of the small, white shell attains 2 mm. The shell has an oblong-ovate shape. It is solid, smooth, and shining, The spire is moderately elevated, and rather rapidly tapering. The apex is obtuse. The 6-7 whorls are flatly convex. The body whoprl is rather large, and slightly compressed beneath. The suture is faintly impressed and broadly margined beneath. The rather