Journal of Phytopathology (2008) 156, 190-192

G. Parrella (2008)
Interveinal yellowing caused by Tomato infectious chlorosis virus in lettuce and escarole in southern Italy
Journal of Phytopathology 156 (3), 190-192
Abstract: In 2005 and 2006, a severe disease of lettuce and escarole, characterized by interveinal yellowing of the leaves, was observed in the Calabria region (Southern Italy). Samples collected were positive in RT-PCR assay when specific primers for Crinivirus were used. The identity of the virus was determined by using Tomato infectious chlorosis virus (TICV)-specific primers and probe. An amplicon of the same size (501 bp) as that from TICV-infected tomato controls, corresponding to the partial Hsp70 viral gene, was obtained from 36 of 40 lettuce samples and from 19 of 24 escarole samples tested in 2005. The sequences obtained had 99-100% nucleotide sequence identity with other TICV sequences. In an extensive survey carried out in 2006 with TICV-specific probe, 92% of symptomatic lettuce and 89% of escarole samples were infected with TICV. Adults of Trialeurodes vaporariorum, harvested from symptomatic lettuce and escarole plants, transmitted the virus to healthy plants of the same species. This is the first evidence of a disease caused by TICV in lettuce in Italy and the first record of TICV infection in escarole.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Giuseppe Parrella

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Trialeurodes vaporariorum	Lettuce (Lactuca)	Italy
	Trialeurodes vaporariorum	Chicory/endive (Cichorium)	Italy
	Tomato infectious chlorosis virus	Lettuce (Lactuca)	Italy
	Tomato infectious chlorosis virus	Chicory/endive (Cichorium)	Italy