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Open AccessArticle

Genetic Diversity of Potyviruses Associated with Tulip Breaking Syndrome

1
Department of Plant Pathology, Faculty of Horticultural Science, Szent István University, 1118 Budapest, Hungary
2
Department of Agriculture, Faculty of Horticulture and Rural Development, John von Neumann University, 6000 Kecskemét, Hungary
3
Plant Protection Institute, Centre for Agricultural Research, 1022 Budapest, Hungary
*
Author to whom correspondence should be addressed.
Plants 2020, 9(12), 1807; https://doi.org/10.3390/plants9121807
Received: 27 November 2020 / Revised: 12 December 2020 / Accepted: 16 December 2020 / Published: 19 December 2020
Tulip breaking is economically the most important viral disease of modern-day tulip growing. It is characterized by irregular flame and feather-like patterns in the flowers and mosaic on the foliage. Thirty-two leaf samples were collected from cultivated tulip plants showing tulip breaking syndrome from Hungary in 2017 and 2018. Virus identification was performed by serological (ELISA) and molecular (RT-PCR) methods. All samples proved to be infected with a potyvirus and evidence was provided that three potyvirus species could be identified in the samples: Lily mottle virus (LMoV), Tulip breaking virus (TBV) and Rembrandt tulip-breaking virus (ReTBV). Recombination prediction accomplished with Recombination Detection Program (RDP) v4.98 revealed potential intraspecies recombination in the case of TBV and LMoV. Phylogenetic analyses of the coat protein (CP) regions proved the monophyletic origin of these viruses and verified them as three different species according to current International Committee on Taxonomy of Viruses (ICTV) species demarcation criteria. Based on these results, we analyzed taxonomic relations concerning potyviruses associated with tulip breaking syndrome. We propose the elevation of ReTBV to species level, and emergence of two new subgroups in ReTBV. View Full-Text
Keywords: tulip; Tulipa; Potyvirus; tulip breaking syndrome; Tulip breaking virus; Lily mottle virus; Rembrandt tulip-breaking virus; recombination; RDP; Hungary tulip; Tulipa; Potyvirus; tulip breaking syndrome; Tulip breaking virus; Lily mottle virus; Rembrandt tulip-breaking virus; recombination; RDP; Hungary
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MDPI and ACS Style

Ágoston, J.; Almási, A.; Salánki, K.; Palkovics, L. Genetic Diversity of Potyviruses Associated with Tulip Breaking Syndrome. Plants 2020, 9, 1807. https://doi.org/10.3390/plants9121807

AMA Style

Ágoston J, Almási A, Salánki K, Palkovics L. Genetic Diversity of Potyviruses Associated with Tulip Breaking Syndrome. Plants. 2020; 9(12):1807. https://doi.org/10.3390/plants9121807

Chicago/Turabian Style

Ágoston, János; Almási, Asztéria; Salánki, Katalin; Palkovics, László. 2020. "Genetic Diversity of Potyviruses Associated with Tulip Breaking Syndrome" Plants 9, no. 12: 1807. https://doi.org/10.3390/plants9121807

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