Genomic characterization of cycad leaf necrosis virus, the first badnavirus identified in a gymnosperm

R. A. Alvarez-Quinto; B. E.L. Lockhart; J. L. Fetzer; N. E. Olszewski

doi:10.1007/s00705-020-04630-6

Genomic characterization of cycad leaf necrosis virus, the first badnavirus identified in a gymnosperm

R. A. Alvarez-Quinto, B. E.L. Lockhart, J. L. Fetzer, N. E. Olszewski

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Abstract

A previously undescribed badnavirus was isolated from Zamia fischeri showing symptoms of chlorosis, necrosis, and ringspot. The virus has bacilliform virions 30 nm in diameter and averaging 120 nm in length. The viral genome is 9227 bp in length and contains three open reading frames characteristic of members of the genus Badnavirus. The largest open reading frame (ORF3) encodes a putative polyprotein, with predicted domains including zinc finger, aspartic protease, reverse transcriptase (RT) and RNase H. The virus is tentatively named "cycad leaf necrosis virus" (CLNV). Within the genus Badnavirus, CLNV was most closely related to sugarcane bacilliform Guadeloupe D virus (FJ439817), sharing 69% identity at the nucleotide level in the RT + RNase H region. This virus is the first badnavirus reported to infect cycads, and it has the largest genome among the currently characterized badnaviruses.

Original language	English (US)
Pages (from-to)	1671-1673
Number of pages	3
Journal	Archives of Virology
Volume	165
Issue number	7
DOIs	https://doi.org/10.1007/s00705-020-04630-6
State	Published - Jul 1 2020

Bibliographical note

Funding Information:
This work was supported by the USDA National Institute of Food and Agriculture, Hatch project #1009997 and the University of Minnesota, Twin Cities. Alvarez-Quinto R.A is supported by the Republic of Ecuador through the Ecuadorean Science and Technology Secretariat (SENESCYT).

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© 2020, Springer-Verlag GmbH Austria, part of Springer Nature.

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abstract = "A previously undescribed badnavirus was isolated from Zamia fischeri showing symptoms of chlorosis, necrosis, and ringspot. The virus has bacilliform virions 30 nm in diameter and averaging 120 nm in length. The viral genome is 9227 bp in length and contains three open reading frames characteristic of members of the genus Badnavirus. The largest open reading frame (ORF3) encodes a putative polyprotein, with predicted domains including zinc finger, aspartic protease, reverse transcriptase (RT) and RNase H. The virus is tentatively named {"}cycad leaf necrosis virus{"} (CLNV). Within the genus Badnavirus, CLNV was most closely related to sugarcane bacilliform Guadeloupe D virus (FJ439817), sharing 69% identity at the nucleotide level in the RT + RNase H region. This virus is the first badnavirus reported to infect cycads, and it has the largest genome among the currently characterized badnaviruses.",

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note = "Funding Information: This work was supported by the USDA National Institute of Food and Agriculture, Hatch project #1009997 and the University of Minnesota, Twin Cities. Alvarez-Quinto R.A is supported by the Republic of Ecuador through the Ecuadorean Science and Technology Secretariat (SENESCYT). Publisher Copyright: {\textcopyright} 2020, Springer-Verlag GmbH Austria, part of Springer Nature.",

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N2 - A previously undescribed badnavirus was isolated from Zamia fischeri showing symptoms of chlorosis, necrosis, and ringspot. The virus has bacilliform virions 30 nm in diameter and averaging 120 nm in length. The viral genome is 9227 bp in length and contains three open reading frames characteristic of members of the genus Badnavirus. The largest open reading frame (ORF3) encodes a putative polyprotein, with predicted domains including zinc finger, aspartic protease, reverse transcriptase (RT) and RNase H. The virus is tentatively named "cycad leaf necrosis virus" (CLNV). Within the genus Badnavirus, CLNV was most closely related to sugarcane bacilliform Guadeloupe D virus (FJ439817), sharing 69% identity at the nucleotide level in the RT + RNase H region. This virus is the first badnavirus reported to infect cycads, and it has the largest genome among the currently characterized badnaviruses.

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Genomic characterization of cycad leaf necrosis virus, the first badnavirus identified in a gymnosperm

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Genomic characterization of cycad leaf necrosis virus, the first badnavirus identified in a gymnosperm

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