ORIGINAL ARTICLE
Incidence and genetic diversity of Raspberry bushy dwarf virus and Raspberry leaf blotch virus isolates in red raspberry in Ukraine
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1
Department of Virology, Sanitation and Propagation of Fruit and Berry Crops, Institute of Horticulture, NAAS of Ukraine,, Sadova Str. 23, 03027, Kyiv, Ukraine
2
Gene pool, Research and Breeding Institute of Pomology Holovousy Ltd.,, Holovousy 129, 508 01, Holovousy, Czech Republic
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2024-10-01
Acceptance date: 2025-02-18
Online publication date: 2025-03-03
Corresponding author
Iryna Riaba
Department of Virology, Sanitation and Propagation of Fruit and Berry Crops, Institute of Horticulture, NAAS of Ukraine,, Sadova Str. 23, 03027, Kyiv, Ukraine
HIGHLIGHTS
- The study analysed RBDV and RLBV isolates in Ukraine using molecular-genetic methods
- Surveys in nine regions revealed a 33.3% infection rate in raspberry plants
- Fragments of four RBDV and two RLBV isolates were sequenced and deposited in GenBank
- Phylogenetic analysis showed a high genetic diversity of isolates from Ukraine
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ABSTRACT
The objective of this study was to assess the prevalence and genetic diversity of raspberry bushy dwarf virus (RBDV) and raspberry leaf blotch virus (RLBV) in Ukrainian raspberry plantations. A survey of viral symptoms, including yellow leaf blotch, leaf distortion, mottling, and crumbly fruits, was conducted across several regions. Crumbly fruits were linked to RBDV infection, while yellow leaf blotch and leaf distortion were associated with RLBV and the presence of eriophyid mites, which serve as RLBV vectors. To detect the presence of these viruses, 195 symptomatic and asymptomatic leaf samples were collected from cultivated raspberry fields and tested using RT-PCR. The overall infection rate was 33.3%, with RBDV detected in 29.2% of the samples and RLBV in 4%. Comparison of sequences of the Ukrainian RBDV isolates showed high nucleotide and amino acid identity and grouped them with isolates from Belarus, Sweden, and Kazakhstan. RLBV isolates from Ukraine displayed notable genetic variability, clustering with isolates from Finland, Serbia, and Slovakia. These findings highlight a high level of virus infections in raspberry plantations in Ukraine. Despite the obligatory certification of planting material, RBDV remains a significant threat to raspberry farming. Furthermore, the emergence and spread of RLBV in Ukraine could further worsen the situation.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.