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Identification and characterization of Potato spindle tuber viroid infecting tomato in Italy. (Abstract/Poster in atti di convegno)

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Identification and characterization of Potato spindle tuber viroid infecting tomato in Italy. (Abstract/Poster in atti di convegno) (literal)

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Navarro, B., Silletti, M.R., Trisciuzzi, V.N. & Di Serio, F. (2009)
Identification and characterization of Potato spindle tuber viroid infecting tomato in Italy.
in XV Congresso della Società Italiana di Patologia Vegetale, Locorotondo (Bari)
(literal)

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Potato spindle tuber viroid (PSTVd), a quarantine plant pathogen in Europe, has been detected in tomato plants in Northern Italy. Infected plants, showing shortened internodes, deformed and necrotic leaves, and abnormal fruit maturation, were grown close to symptomless Solanum jasminoides plants also infected by PSTVd. Molecular characterization of field isolates, biological assays with cDNA viroid infectious clones and sequence analyses of the resulting progenies support the possibility of PSTVd transmission to tomato plants from the neighbouring infected S. jasminoides plants. This is the first report of tomato plants infected by PSTVd in Italy and the first well-supported evidence on the risk of PSTVd epidemic spread from symptomless ornamental Solanaceae to susceptible horticultural crops when prophylactic measures are not enforced. These results also suggest that occasional PSTVd outbreaks in tomato crops reported in several European countries in the last two decades could have a similar origin. (literal)

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