Characterization of an isolate of Lettuce big-vein associated virus (LBVaV) detected in naturally infected tomato (Solanum lycopersicum L.) in Slovakia

https://doi.org/10.17221/56/2021-PPSCitation:

Tomašechová J., Predajňa L., Mihálik D., Mrkvová M., Cejnar P., Šoltys K., Sabanadzovic S., Glasa M. (2021): Characterization of an isolate of Lettuce big-vein associated virus (LBVaV) detected in naturally infected tomato (Solanum lycopersicum L.) in Slovakia. Plant Protect. Sci., 57: 344–348. 

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A tomato plant (Solanum lycopersicum Linnaeus, labelled KVE) displaying virus-like symptoms, tested negative for common tomato viruses, was subjected to high-throughput sequencing (HTS) on the Illumina MiSeq platform using ribosomal RNA-depleted total RNA as a template. The analysis has revealed the contigs mapping to Lettuce big-vein associated virus (LBVaV). The near complete LBVaV-KVE sequence of RNA1 and RNA2 revealed 95.0 and 94.9% identity with the reference sequence, the same length of translated products and a typical varicosavirus genome organisation. After initial long-term maintenance of LBVaV-KVE in the original plant, the virus could be detected by RT-PCR or nanoLC-ESI-Q-TOF in new plants generated from lateral shoot cuttings or inoculated by stem chips, although not uniformly.  So far, LBVaV was reported to infect lettuce and related species. Our study expands the natural host range of the LBVaV to tomato.

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