Location: Subtropical Plant Pathology ResearchTitle: First report of Cactus virus X in Hylocereus undatus (dragon fruit) in Florida
|GAZIS, ROMINA - University Of Florida|
|POUDEL, BINDU - University Of Florida|
|DEY, KISHORE - Florida Department Of Agriculture And Consumer Services|
|ZHANG, SHOUAN - University Of Florida|
|PALMATEER, AARON - University Of Florida|
|CAMPOVERDE, VANESSA - University Of Florida|
|BAKER, CARLYE - Florida Department Of Agriculture And Consumer Services|
Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/12/2018
Publication Date: 11/21/2018
Citation: Gazis, R., Poudel, B., Dey, K.K., Zhang, S., Palmateer, A., Campoverde, V.E., Baker, C.A., Adkins, S.T. 2018. First report of Cactus virus X in Hylocereus undatus (dragon fruit) in Florida. Plant Disease. 102:2666. https://doi.org/10.1094/PDIS-05-18-0725-PDN.
Interpretive Summary: This is the first Florida report of Cactus virus X infecting dragon fruit, a crop of increasing importance in the state. A description of the symptoms caused and diagnostic methods are included. This report provides a timely account of this virus and its potential to cause economic losses in cactus crops to growers, Extension personnel and state and Federal regulatory and research scientists.
Technical Abstract: Stem symptoms suggestive of virus infection were recently observed on the cactus crop dragon fruit (Hylocereus spp.) in Florida. Symptoms included irregular chlorotic spots, pale yellow-green mosaic and deformed spines. Electron microscopy revealed flexuous rod shaped virus particles typical of potexviruses. Several sets of degenerate potexvirus primers amplified products of the expected size by RT-PCR. Sequences of these amplicons were highly identical to Cactus virus X. This virus was detected in multiple dragon fruit plant samples from 2010 through 2018.