Nerine latent virus explained

Nerine latent virus (NeLV) is a plant pathogenic virus. It infects Nerine, Narcissus, Hippeastrum and Ismene plants.

Taxonomy

NeLV was first described in 1972.^{[1] [2]} In 2004 it was placed in the Carlavirus genus within the family Flexiviridae.^{[2] [3]} When that family was split in 2009, Carlavirus and NeLV were placed in the family Betaflexiviridae.

Narcissus symptomless virus

Narcissus symptomless virus was described as a separate virus taxon in 2006.^[4] Subsequently, in 2016 it became apparent that the nucleotide sequence identities between Narcissus symptomless virus and the partial genome sequences of Nerine latent virus are 94-97% for coat protein and replicase, well above the threshold 72% set for speciation of flexiviruses. Consequently, these two viruses can be considered to be the same taxon, and since NeLV has priority, Narcissus symptomless virus should be reduced to a synonym.^{[2] [5]}

Bibliography

• Maat DZ, Huttinga H, Hakkaart FA (1978) Nerine latent virus, some properties and serological detectability in Nerine bowdenii. Neth J Plant Pathol 84:47–59

Notes and References

1. Hakkaart FA (1972) Virusziekten van Nerine. Jversl Inst Plziektenk Onderz, Wageningen 1971:105–106
2. http://talk.ictvonline.org/files/ictv_official_taxonomy_updates_since_the_8th_report/m/plant-official/4457/download.aspx Remove (abolish) the species Narcissus symptomless virus in the genus Carlavirus, family Betaflexiviridae. 2012
3. Adams . MJ . Antinow . JF . Bar-Joseph . M . Brunt . AA . Candresse . T . Foster . GD . Martelli . GP . Milne . RG . Fauquet . CM . 2004 . The new plant family Flexiviridae and assessment of molecular criteria for species demarcation . Arch Virol . 149 . 5. 1045–1060 . 10.1007/s00705-004-0304-0 . 15098118 . 34493607 . free .
4. Chen. J.. Shi. Y.-H.. Lu. Y.-W.. Adams. M. J.. Chen. J.-P.. Narcissus symptomless virus: a new carlavirus of daffodils. Archives of Virology. 9 June 2006. 151. 11. 2261–2267. 10.1007/s00705-006-0801-4. 16763730. 19997956.
5. Wylie SJ, Jones MGK (2012) Complete genome sequences of seven carlavirus and potyvirus isolates on Narcissus and Hippeastrum plants in Australia, and proposals to clarify their naming. Archives of Virology (available online 12 May 2012. DOI: 10.1007/s00705-012- 1319-6)