Citrus exocortis

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Citrus exocortis is a disease of citrus plants, caused by the Citrus exocortis viroid (CEVd). It can cause stunted growth and reduced yields in affected plants. The disease is also sometimes called "scalybutt".[1]

CEVd can also infect tomato plants. The resulting disease is sometimes called "tomato bunchy top disease."[2]

CEVd can be identified with bark shelling on trees grown on P. trifoliata or P. trifoliata hybrids. Other symptoms include leaf epinasty, stunting, and necrosis of the leaf midvein.[3]

See also[edit]


  1. ^ "Citrus exocortis" (PDF). NSW Department of Primary industries. Retrieved 3 October 2011.
  2. ^ Mishra MD, Hammond RW, Owens RA, Smith DR, Diener TO (August 1991). "Indian bunchy top disease of tomato plants is caused by a distinct strain of citrus exocortis viroid". Journal of General Virology. 72 (8): 1781–5. doi:10.1099/0022-1317-72-8-1781. PMID 1875190.
  3. ^ "Citrus exocortis". Retrieved 24 October 2017.