Articles
HYPERSENSITIVITY OF PRUNUS DOMESTICA L. ‘JOJO’ WAS CHANGED BY PPV-D STRAIN INTO VERY HIGH SENSITIVITY
Article number
899_10
Pages
87 – 93
Language
English
Abstract
Trees of Prunus domestica Jojo were inoculated by grafting with PPV-M, PPV-Rec, and PPV-D strains.
Trees of Jojo inoculated with PPV-M and PPV-Rec died in the year after inoculation.
Plum trees inoculated with PPV-D strain survived graft inoculation.
Stunting and partial death of shoots were observed in the first year after inoculation of trees with PPV-D. Only one of four trees inoculated with PPV-D died in the second year after inoculation.
Recovering of another three trees was observed in the following years.
Necrotic plates were observed on trunks of two trees of Jojo, and the presence of PPV was confirmed close to necrotic plates both by ELISA and RT-PCR.
Very severe systemic symptoms of PPV appeared in leaves and in fruits of the third surviving tree of Jojo. The presence of PPV was confirmed both by ELISA and RT-PCR in diffuse spots and rings of infected leaves and in fruits showing severe PPV symptoms.
Severe systemic infection was observed in the years 2004-2010 in Jojo plum tree infected with PPV-D. Low pathogenic PPV-D strain changed the hypersensitive reaction of Jojo plum into the systemic reaction expressing severe PPV symptoms.
Trees of Jojo inoculated with PPV-M and PPV-Rec died in the year after inoculation.
Plum trees inoculated with PPV-D strain survived graft inoculation.
Stunting and partial death of shoots were observed in the first year after inoculation of trees with PPV-D. Only one of four trees inoculated with PPV-D died in the second year after inoculation.
Recovering of another three trees was observed in the following years.
Necrotic plates were observed on trunks of two trees of Jojo, and the presence of PPV was confirmed close to necrotic plates both by ELISA and RT-PCR.
Very severe systemic symptoms of PPV appeared in leaves and in fruits of the third surviving tree of Jojo. The presence of PPV was confirmed both by ELISA and RT-PCR in diffuse spots and rings of infected leaves and in fruits showing severe PPV symptoms.
Severe systemic infection was observed in the years 2004-2010 in Jojo plum tree infected with PPV-D. Low pathogenic PPV-D strain changed the hypersensitive reaction of Jojo plum into the systemic reaction expressing severe PPV symptoms.
Publication
Authors
J. Polák, J. Jarošová
Keywords
sharka disease, PPV strains, plum, hypersensitivity, high sensitivity, systemic symptoms
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