Striga hermonthica Striga hermonthica Striga hermonthica, commonly known as purple witchweed or giant witchweed, is a hemiparasitic plant that belongs to the family Orobanchaceae. It is devastating to major crops such as sorghum ("Sorghum bicolor") and rice ("Oryza sativa"). In sub-Saharan Africa, apart from sorghum and rice, it also infests maize ("Zea mays"), pearl millet ("Pennisetum glaucum"), and sugar cane ("Saccharum officinarum"). "Striga hermonthica" has undergone horizontal gene transfer from "Sorghum" to its nuclear genome. The "S. hermonthica" gene, "ShContig9483", is most like a "Sorghum bicolor" gene, and additionally shows significant but lesser similarity to a gene from "Oryza sativa". It shows
Rissoina oryza 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 large aperture is oblique and has a sub-ovate shape. The thick peristome is dilated. The columella is