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New or Unusual Disease Reports

First report of camellia ring spot associated virus 3 in Camellia japonica in Europe

Francesco DESIDERIO
Institute for Bioscience and Bioresources, National Research Council (IBBR-CNR), 90146, Palermo, Italy
Myeonghwan KWAK
Department of Plant Medicals, Gyeongkuk National University, 36729 Andong, Republic of Korea
Eui-Joon KIL
Department of Plant Medicals, Gyeongkuk National University, 36729 Andong, Republic of Korea
Giuseppe PARRELLA
Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), 80055 Portici (NA), Italy
Categories

Published 2026-07-12

Keywords

  • CRSaV-3,
  • High Throughput Sequencing,
  • leaf variegation,
  • chlorotic spots,
  • virus detection

How to Cite

[1]
F. DESIDERIO, M. KWAK, E.-J. KIL, and G. PARRELLA, “First report of camellia ring spot associated virus 3 in Camellia japonica in Europe”, Phytopathol. Mediterr., pp. 191–196, Jul. 2026.

Funding data

Abstract

Numerous viruses have been described in camellia, often found in association, and a variety of symptoms have been associated with these infections. In this study, a plant with chlorotic spots, including complete yellowing of the leaves, was subjected to high-throughput sequencing (HTS). Three viral contigs were identified by HTS, and complete genome sequences of a new isolate of camellia ring spot associated virus 3 (CRSaV-3) were determined using nested PCR to bridge the gap between discontinuous contigs. The new CRSaV-3 isolate shared the highest percentage of nucleotide identity (87.1%) with the American isolate CJ5_676. This represents the first report of CRSaV-3 in symptomatic camellia in Europe and, since only this virus was diagnosed, for the first time it was possible to reliably associate the symptoms observed in camellia to a specific CRSaV-3 isolate.

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