"Candidatus Phytoplasma solani" is a phytopathogenic bacterial Phytoplasma species[2] 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.[citation needed]
^'Candidatus Phytoplasma solani', a novel taxon associated with stolbur- and bois noir-related diseases of plants. Quaglino F, Zhao Y, Casati P, Bulgari D, Bianco PA, Wei W and Davis RE, Int J Syst Evol Microbiol., August 2013, volume 63 (Pt 8), pages 2879-2894, doi:10.1099/ijs.0.044750-0
^Identification of ‘Candidatus Phytoplasma solani’ Associated with Tree Peony Yellows Disease in China. Ying Gao, Ping-Ping Qiu, Wen-Hao Liu, Wen-Min Su, Shu-Peng Gai, Yuan-Cun Liang and Xiao-Ping Zhu, Journal of Phytopathology, March 2013, Volume 161, Issue 3, pages 197–200, doi:10.1111/jph.12025