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00.056.0.01.017. Potato aucuba mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.056.0.01.017. Potato aucuba mosaic virus. In: ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA

Cite this site as: ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/

Table of Contents

Isolate Description

Location: the Netherlands (and the U.K).

Host of Isolate and Habitat Details
Source of isolate: Solanum tuberosum.

Natural host and symptoms
Solanum tuberosum — chlorotic local lesions on older leaves, necrotic on younger, systemic (top) necrosis (Clinch, 1941). Stored tubers develop necrosis in the cortex and pith with irregular brown or sunken patches on the surface.

Reference to Isolation Report
Quanjer (1921, Clinch et al. (1936).

Classification

This is a description of a plant virus at the species level with data on all virus properties from morphology to genome, replication, antigenicity and biological properties.

ICTVdB Virus Code: 00.056.0.01.017. Virus accession number: 56001017. Obsolete virus code: 56.0.1.0.017; superceded accession number: 56010017.
NCBI Taxon Identifier NCBI Taxonomy ID: 12182.

Name, Synonyms and Lineage

Synonym(s): potato G virus, potato virus F, tuber blotch virus. ICTV approved acronym: PAMV. Virus is an ICTV approved species of the genus 00.056.0.01. Potexvirus in the family 00.056. Flexiviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid/nucleocapsid is elongated with helical symmetry. The capsid is filamentous, flexuous with a length of 580 nm and a width of 11 nm.

Electron microscopic preparation and references: Reference for electron microscopic methods: Govier and Kassanis (1972).

Physicochemical and Physical Properties

There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 130 S20w. The thermal inactivation point (TIP) is at 65-70°C. The longevity in vitro (LIV) is 30-60 days (at 18-20°C; Kollmer and Larson, 1960). Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 5-6.

Nucleic Acid

The Mr of the genome constitutes 5% of the virion by weight. The genome is monopartite, only one particle size is recovered of linear, positive-sense, single-stranded RNA, is fully and partially sequenced. Sequence has the accession number [S73580] Gb(89)_un:S73580 putative polymerase. capsid protein potato aucuba mosaic virus PAMV. Genomic RNA Complete.

The genome has a base ratio of 25 % guanine; 30 % adenine; 24 % cytosine; 21 % uracil.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 95% of the particle weight.

The viral genome encodes structural proteins and non-structural proteins. Virions consist of 1 structural protein(s).

Lipids

Lipids are not reported.

Transcription: The virus codes for 5 ORF(s).

Coding Strategy of Segment 1: Sequence has a gene block. Sequence has triple gene block sequence (TGB). Encodes proteins involved in cell to cell movement.

Diagnostics and Reference Collections

The best tests for diagnosis are The symptoms in potato resemble those of potato mop-top virus (PMTV, both cause necrosis on the tuber surface, but those of PAMV are less clearly patterned than the raised necrotic rings caused by first-year infection with PMTV; however, PAMV sometimes causes necrotic rings. PAMV, but not PMTV, infects Capsicum annuum systemically, they have virions of different sizes (Harrison and Jones, 1970).

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms, Class Magnoliopsida (Dicotyledonae).

Class Magnoliopsida (Dicotyledonae)
Subclass ASTERIDAE.

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is transmitted by mechanical inoculation.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Myzus persicae. Virus is transmitted in a non-persistent manner; requires, for vector transmission, a helper virus (any potyvirus, such as potato viruses A and Y; Kassanis and Govier, 1971a;b).

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in few families. Susceptible host species are found in the Family Solanaceae. The following species were susceptible to experimental virus infection: Capsicum annuum, Capsicum frutescens, Datura stramonium, Lycopersicon esculentum, Nicotiana glutinosa, Nicotiana tabacum, Petunia x hybrida, Solanum tuberosum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Commelinaceae. Species inoculated with virus that do not show signs of susceptibility: Tinantia erecta.

Diagnostic Hosts

Diagnostic host species and symptoms:

Capsicum annuum, C. frutescens — necrotic local lesions then epinasty, systemic mosaic or necrosis, young plants killed.

Nicotiana glutinosa — light green mottle with dark green vein-banding.

Lycopersicon esculentum — small chlorotic local lesions.

Nicotiana tabacum cvs White Burley and Xanthi-nc, Datura stramonium and Petunia sp. — systemic infection but usually symptomless.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Nicotiana tabacum cv. Xanthi-nc.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Capsicum annuum cv. Long Red (L/W), C. frutescens cv. Early Calwonder (L/W).

Histopathology: Virus can be best detected in all parts of the host plant. Virions are found in the cytoplasm (sometimes in dense aggregates).

Geographical Distribution

The virus is probably distributed worldwide (but uncommon).

List of Strains and Isolates in the Species

Potato virus F, synonym of tuber blotch virus (Clinch et al., 1936).

References

Clinch, P.J. (1941). Scient. Proc. R. Dubl. Soc. N. S. 22: 435.

Clinch, P.J., Loughnane, J.B. and Murphy, P.A. (1936). Scient. Proc. R. Dubl. Sco. N. S. 21: 431.

Harrison, BD and Jones, R.A.C. (1970). Ann. appl. Biol. 65: 393.

Kassanis, B. and Govier, D.A. (1971a). J. gen. Virol. 10: 99.

Kassanis, B. and Govier, D.A. (1971b). J. gen. Virol. 13: 221013.

Kassanis, B. and Govier, D.A. (1972). CMI/AAB Descr. Pl. Viruses No. 98, 4 pp.

Kollmer, G.F. and Larson, RH (1960). Res. Bull. agric. Exp. Stn Univ. Wis. 223.

Quanjer, H.M. (1921). R. hort. Soc., Lond. Rep. int. Potato Conf. 127.

The following generic references are cited in the most recent ICTV Report.

PubMed References.

VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 642 by C. Büchen-Osmond and D.A. Govier, 1987.
A description of the virus is found in DPV, a database for plant viruses developed by the Association of Applied Biologists (AAB), with the number 98.



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DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia. ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses by Dr Cornelia Büchen-Osmond is written in DELTA. The virus descriptions in ICTVdB are coded by, or using data from experts in the field of virology or members ICTV. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations are automatically generated and formatted for display on the Web from the descriptions in DELTA-format. The description has been generated automatically from DELTA files. DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia.

ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses (ICTV) by Dr Cornelia Büchen-Osmond, is written in DELTA. The virus descriptions in ICTVdB are coded by ICTV members and experts, or by the ICTVdB Management using data provided by the experts, the literature or the latest ICTV Report. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations from the encoded descriptions are automatically generated and formatted for display on the Web.

Developer of the DELTA software: M. J. Dallwitz, T. Paine and E. Zurcher

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Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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