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Abstract In 2021, plants exhibiting characteristic virus-like symptoms were observed both inside and close vicinity of a plastic tunnel used for pepper ( Capsicum annuum ) breeding. Inside the plastic tunnel various pepper breeding lines were cultivated, while different perennial woody ornamental plant species were located in the surrounding area. The presence of tomato spotted wilt orthotospovirus ( Orthotospovirus tomatomaculae , TSWV) was detected by RT-PCR assays from all the collected samples, including samples from Prunus tenella (syn. Amygdalus nana ), Parthenocissus quinquefolia , Hypericum calycinum and the pepper breeding lines. Nucleotide sequence analysis of the nonstructural protein encoding NSs gene revealed the presence of genetically diverse TSWV isolates both inside and outside of the plastic tunnel. This is the first report of TSWV from these perennial ornamental species labelling them as new hosts of TSWV. This suggests their potential role as reservoirs of the virus and emphasizes the importance of monitoring virus presence in non-crop vegetation to minimize the sanitary risks.
Almási et al. (Wed,) studied this question.