Jostaberry Jostaberry The jostaberry ("Ribes" × "nidigrolaria") is a complex-cross fruit bush in the genus "Ribes", involving three original species, the black currant "R. nigrum", the North American coastal black gooseberry "R. divaricatum", and the European gooseberry "R. uva-crispa". It is similar to "Ribes × culverwellii", the Jochelbeere, which is descended from just two of these species, "R. nigrum" and "R. uva-crispa". The cultivated plants are tetraploid. They are descended from two separate first-generation crosses, both of which produced very few fruit. Fertile tetraploids were produced using colchicine. The name "Jostaberry" was created via combining the German words for blackcurrant and
Epicoccum nigrum pigments currently used in food. It produces a variety of pigments, ranging from darker oranges to yellows and greens. These pigments were synthesized by nonpathogenic strains of "E. nigrum". In Brazil, "E. nigrum" is used to support root growth and control sugarcane pathogens. It is a biocontrol antifungal agent active against brown rot in stone fruit, caused the species "Monilinia laxa" and "Monilinia fructigena". In contrast to these uses for "E. nigrum" metabolites, there has been an investigation into methods of controlling "E. nigrum" fungal colonies that have contaminated historic and cultural artifacts. The fungus was found to be quite