[Home] [ICTV Taxonomy - Index of Viruses] [Virus Descriptions] [Character List] [Picture Gallery]
[Tutorial] [Online Data Retrieval & Identification] [Virus Isolate Registration & Submission] [Search]
Descriptions are generated automatically from the ICTVdB database including links. Some descriptions are only very basic and links may point to documents that are not yet published on the Web.

00.057.0.81.049. Malva vein clearing virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.81.049. Malva vein clearing 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: Germany.

Host of Isolate and Habitat Details
Source of isolate: Malva sylvestris.

Natural host and symptoms
Malva neglecta, M. nicaensis, M. parviflora, M. rotundifolia, M. sylvestris, Lavatera assurgentiflora, L. cretica, L. trimestris — vein clearing and yellow mosaic.

Reference to Isolation Report
Hein (1957).

Classification

This is a description of a plant virus at the species level.

ICTVdB Virus Code: 00.057.0.81.049. Virus accession number: 57081049. Obsolete virus code: 57.0.1.T.049; superceded accession number: 5701t049.

Name, Synonyms and Lineage

Synonym(s): malva green mosaic virus, malva yellow vein mosaic virus, malva mosaic virus. ICTV approved acronym: MVCV. 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 850-860 nm and a width of 12 nm. Axial canal is indistinct. Basic helix is obscure.

Electron microscopic preparation and references: Virus preparation contains few virions.

Physicochemical and Physical Properties

There are presumably 1 sedimenting component(s) found in purified preparations. The thermal inactivation point (TIP) is at 60-65°C. The longevity in vitro (LIV) is 1-8 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 2-3.

Nucleic Acid

The Mr of the genome constitutes c. 5% of the virion by weight. The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered.

Proteins

Proteins constitute about c. 95% of the particle weight.

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

Non-Structural Proteins: Virus-coded non-structural proteins have been isolated and probably 3 non-structural protein(s) are found.

Lipids

Lipids are not reported.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms).

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; Aphis umbrella (syn. Aphis malvae Koch) and Myzus persicae are vectors, whereas Acyrthosiphon solani, Coloradoa rufomaculata, Macrosiphum euphorbiae, Myzus ornatus, M. ascalonicus and Aulocorthum circumflexum are non-vectors. Virus is transmitted in a non-persistent manner.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in few families (and only some genera of the Malvaceae are infected). Susceptible host species are found in the Family Malvaceae. The following species were susceptible to experimental virus infection: Abutilon indicum, Abutilon theophrasti, Althaea officinalis, Althaea sinensis, Anoda cristata, Anoda dillerriana, Anoda lavateroides, Gossypium barbadense, Hibiscus cannabinus, Hibiscus sabdariffa, Hibiscus trionum, Kitaibelia vitifolia, Lavatera ambigua, Lavatera arborea, Lavatera assurgentiflora, Lavatera cretica, Lavatera trimestris, Malva alcea, Malva crispa, Malva meluca, Malva moschata, Malva neglecta, Malva nicaensis, Malva parviflora, Malva rotundifolia, Malva sylvestris, Malva verticillata, Malvastrum capense, Napaea dioica, Sida napaeae, Sida rhombifolia, Sidalcea malvaefolia, Urocarpidium peruvianum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Amaranthaceae, Caryophyllaceae, or Chenopodiaceae, Cucurbitaceae, Dipsacaceae, Labiatae, or Leguminosae-Papilionoideae, Malvaceae, Plumbaginaceae, Ranunculaceae, Resedaceae, Solanaceae, Umbelliferae. Species inoculated with virus that do not show signs of susceptibility: Abelmoschus esculentus, Althaea rosea, Amaranthus retroflexus, Armeria vulgaris, Astrocarpa sesmoides, Beta maritima, Beta vulgaris, Capsicum annuum, Chenopodium amaranticolor, Chenopodium quinoa, Consolida ajacis, Coriandrum sativum, Cucumis sativus, Cucurbita pepo, Datura stramonium, Gomphrena globosa, Gossypium hirsutum, Lamium purpureum, Lycopersicon esculentum, Melandrium nodiflorum, Nicotiana glutinosa, Nicotiana sylvestris, Nicotiana tabacum, Phaseolus vulgaris, Salsola kali, Scabiosa columbaria, Schizanthus pinnatus, Stellaria media.

Diagnostic Hosts

Diagnostic host species and symptoms:

Malva parviflora, M. neglecta, M. sylvestris, M. rotundifolia, Lavatera assurgentiflora.

Diagnostic host: insusceptible host species Abelmoschus esculentus, Chenopodium amaranticolor, Cucumis sativus, Datura stramonium, Gossypium hirsutum.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Malva parviflora (W, M. neglecta (W, M. sylvestris (W, M. rotundifolia (W, Lavatera assurgentiflora (W).

References to host data: Hein (1957, Horváth et al. (1979).

Histopathology: Virus can be best detected in all parts of the host plant. 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 crystals and pinwheels. Inclusions are and scrolls. Inclusions do not contain mature virions.

Geographical Distribution

The virus occurs in Australia (Tasmania), or Brazil, or Czechoslovakia (former), or Germany, or Israel, or Italy, or Portugal, or the United States of America (California), or the USSR (former), or Yugoslavia.

List of Strains and Isolates in the Species

Hein (1957) distinguishes two strains, that are the yellow vein mosaic and green mosaic strains of Costa and Duffus (1957).

References

Costa, AS. and Duffus, JE (1957). Pl. Dis. Reptr 41: 1006

Hein, A (1957). Phytopath. Z. 28: 205.

Horváth, J., Mamula, D., Besada, W.H. and JureticH, N. (1979). Phytopath. Z. 95: 51.

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 479 by G.R. Johnstone, 1987.



Limit search to: Title & Body Title Document Path
Show Reverse Sort

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

ICTVdB and DELTA related References

Comments to ICTVdB Management
Last updated on 25 April 2006 by Cornelia Büchen-Osmond
Copyright © 2002    International Committee on Taxonomy of Viruses.    All rights reserved.


Additional access points to virus species lists, descriptions and images on the web:

Species catalogue                     iSpecies.org - a species search engine           a species search engine

Google Analytics      Google Analytics: activity view