candidatus phytoplasma solani candidatus phytoplasma solani "candidatus phytoplasma solani" is a phytopathogenic bacterial phytoplasma species of the 16srxii group, the causal agent of the black wood of grapevine. the black wood of grapevine disease is classified as part of the grapevine yellows. candidatus phytoplasma solani candidatus phytoplasma solani on grape scientific classification domain: bacteria phylum: mycoplasmatota class: mollicutes order: acholeplasmatales family: acholeplasmataceae genus: candidatus phytoplasma species: ca. p. solani binomial name candidatus phytoplasma solaniquaglino et al. 2013 "candidatus phytoplasma solani"common names black wood of grapevine bois noir maize redness metabolbur parastolbur stolbur of potato stolbur of tobacco stolbur of tomato tree peony yellows disease causal agents"candidatus phytoplasma solani"hostsvine, maize, potato, tobacco, tomato, tree peonyvectorshyalesthes obsoletuseppo codephypsodistributionfrance, china "ca. phytoplasma solani" is also associated with the tree peony (paeonia suffruticosa) yellows disease in china and tobacco (nicotiana tabacum) leaf abnormality in turkey.