Diospyros dichrophylla Diospyros dichrophylla Diospyros dichrophylla (Gand.) De Winter aka poison star-apple is a Southern African tree belonging to the ebony family of Ebenaceae and closely related to the Persimmon ("Diospyros kaki"). Some authors describe it as being poisonous, which is puzzling as generally ripe fruits from this genus are quite tasty and edible, though green fruits are rich in tannins. The genus of "Diospyros" includes some 700 species, many of which are ornamental and many which bear edible and often cultivated fruit. This species grows into a medium-sized tree of up to 15 m tall. It is multi-stemmed and forms a
Genetically modified tomato cold and drought tolerance in transgenic "Arabidopsis thaliana" plants, was inserted into the tomato. This resulted in increased drought tolerance, but did not appear to have any effect on cold tolerance. Overexpressing a vacuolar Na/H antiport ("AtNHX1") from "A. thaliana" lead to salt accumulating in the leaves of the plants, but not in the fruit and allowed them to grow more in salt solutions than wildtype plants. They were the first salt-tolerant, edible plants ever created. Tobacco osmotic genes overexpressed in tomatoes produced plants that held a higher water content than wildtype plants increasing tolerance to drought and salt stress.