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00.057.0.81.034. Eggplant green mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.81.034. Eggplant green 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: South part; Nigeria.

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

Natural host and symptoms
Solanum melongena — green mosaic.

Reference to Isolation Report
Ladipo (1976).

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: 00.057.0.81.034. Virus accession number: 57081034. Obsolete virus code: 57.0.1.T.034; superceded accession number: 5701t034.

Name, Synonyms and Lineage

ICTV approved acronym: EGMV. Virus is an ICTV approved species of the genus 00.057.0.01. Potyvirus in the family 00.057. Potyviridae.

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 clear modal length with a length of 820 nm. Axial canal is indistinct. Basic helix is obscure.

Electron microscopic preparation and references: Virus preparation contains few virions. Reference for electron microscopic methods: Ladipo et al. (1976).

Physicochemical and Physical Properties

The thermal inactivation point (TIP) is at 60°C. The longevity in vitro (LIV) is 4 days (at 25-28°C). Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 4.

Nucleic Acid

The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered.

Proteins

The viral genome encodes structural proteins and non-structural proteins.

Lipids

Lipids are not reported.

Antigenicity

The virus is serologically related to dioscorea green-banding, groundnut eyespot, zucchini yellow mosaic and an unnamed potyvirus from tomato in Taiwan. The virus does not show serological relationships to datura Colombian, henbane mosaic, pepper mottle, pepper veinal mottle, tomato (Peru), potato A, potato Y, tobacco etch and wild potato mosaic viruses.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation.

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: Lycopersicon esculentum, Nicandra physalodes, Nicotiana benthamiana, Nicotiana clevelandii, Nicotiana debneyi, Nicotiana glutinosa, Nicotiana megalosiphon, Nicotiana occidentalis, Nicotiana rustica, Nicotiana sylvestris, Nicotiana tabacum, Petunia x hybrida, Physalis floridana, Physalis peruviana, Solanum melongena, Solanum nigrum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Amaranthaceae, Apocynaceae, or Chenopodiaceae, Cucurbitaceae, Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Capsicum annuum, Capsicum frutescens, Catharanthus roseus, Chenopodium album, Chenopodium amaranticolor, Cucumis sativus, Datura stramonium, Gomphrena globosa, Vigna unguiculata, Vigna unguiculata ssp. cylindrica.

Diagnostic Hosts

Diagnostic host species and symptoms:

Lycopersicon esculentum — mild systemic chlorosis.

Nicandra physalodes — necrotic local lesions, then systemic chlorosis and necrotic spotting.

Nicotiana megalosiphon, N. occidentalis, N. rustica, N. sylvestris — necrotic local lesions, then systemic necrotic spotting and veinal necrosis.

N. tabacum cvs White Burley, Xanthi-nc — systemic chlorotic spotting and vein necrosis.

N. glutinosa — systemic vein clearing and mottling.

Petunia x hybrida — chlorotic local lesions, then systemic veinal chlorosis and necrosis.

Physalis peruviana — chlorotic rings and lesions, systemic mottling.

Diagnostic host: insusceptible host species Chenopodium amaranticolor, Cucumis sativus, Datura stramonium, Gomphrena globosa, Vigna unguiculata.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Nicotiana glutinosa, N. clevelandii.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Nicotiana megalosiphon (L), N. sylvestris (L), N. occidentalis (L), N. rustica (L).

References to host data: Ladipo (1976, Ladipo et al. (1988).

Histopathology: Virus can be best detected in leaves. Virions are found in the cytoplasm.

Cytopathology: Inclusions are present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm. Cytoplasmic inclusions are pinwheels. Inclusions do not contain mature virions. Other cellular changes include masses of endoplasmic reticulum, microbodies, lipid droplets, mitochondria and abnormal vesicles in cytoplasm.

Geographical Distribution

The virus occurs in Nigeria.

References

Ladipo, J.L. (1976). Pl. Dis. Reptr 60: 1068.

Ladipo, J.L., Lesemann, D.E. and Koenig, R. (1988). J. Phytopath. 121: 159.

The following generic references are cited in the most recent ICTV Report.
VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 316 by A.A. Brunt, D.E. Lesemann and R. Koenig, 1988.



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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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