[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.

00.057.0.71.005. Amaranthus mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.71.005. Amaranthus 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: Delhi; India.

Host of Isolate and Habitat Details
Source of isolate: Amaranthus lividus and A. viridis.

Natural host and symptoms
Amaranthus lividus, A. viridis — systemic blotchy mosaic and mottle, sometimes with severe vein yellowing.

A. caudatus, A. tricolor — systemic mosaic, leaves puckered.

Reference to Isolation Report
Phatak (1965).

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: 00.057.0.71.005. Virus accession number: 57071005. Obsolete virus code: 57.0.1.DE.05; superceded accession number: 5701de05.

Name, Synonyms and Lineage

The taxon is not listed in the current ICTV Report.

Synonym(s): pigweed mosaic virus (Singh et al., 1972). Virus is not listed in the 7th ICTV Report, but is considered to be a species. Virus is of the genus 00.057.0.01. Potyvirus; 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 700-728 nm and a width of 14 nm.

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

Physicochemical and Physical Properties

The thermal inactivation point (TIP) is at 55-60°C. The longevity in vitro (LIV) is 1 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 1-2.

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

Phatak (1965) reported a mosaic disease of Amaranthus lividus and A. viridis from Delhi, India in 1965 and called it amaranthus mosaic virus. This has been regarded as the type culture of AMV. Subsequently a variant has been reported by Govindaswamy et al. (1967) from Coimbatore, Tamil Nadu, India in naturally infected A. caudatus and A. tricolor. The Coimbatore isolate differs from the type culture (strain) in infecting Gomphrena globosa and Petunia x hybrida. Singh et al. (1972) reported its virion morphology and it has since been considered a member of the family Potyviridae (Mali, 1985), but its possible relationship with amaranthus leaf mottle virus (Hollings and Brunt, 1981; Lovisolo and Lisa, 1976) needs to be tested.

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 mechanical inoculation; transmitted by grafting.

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 Amaranthaceae, Solanaceae. The following species were susceptible to experimental virus infection: Amaranthus caudatus, Amaranthus cruentus, Amaranthus dilatum, Amaranthus leucocarpus, Amaranthus lividus, Amaranthus tricolor, Amaranthus viridis, Gomphrena globosa, Petunia x hybrida.

Host:
Experimentally infected hosts mainly show symptoms of mosaics and mottling.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Chenopodiaceae, Compositae, Cucurbitaceae, Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Beta vulgaris, Capsicum annuum, Chenopodium album, Chenopodium amaranticolor, Chenopodium murale, Cucumis melo, Cucurbita moschata, Cyamopsis tetragonoloba, Datura stramonium, Helianthus annuus, Nicandra physalodes, Nicotiana glutinosa, Nicotiana tabacum, Solanum melongena, Solanum nigrum.

Diagnostic Hosts

Diagnostic host species and symptoms:

Amaranthus cruentus, A dilatum, A leucocarpus, A tricolor — systemic mosaic and mottling. Diagnostic host: insusceptible host species Chenopodium album, C. amaranticolor, Capsicum annuum, Nicotiana glutinosa, N. tabacum, Nicandra physalodes, Solanum nigrum.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Amaranthus viridis, A caudatus and A. tricolor.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Amaranthus caudatus (W).

References to host data: Govindaswamy et al. (1967). Phatak (1965). Singh et al. (1972).

Geographical Distribution

The virus spreads in Central Asia. The virus occurs in India (Coimbatore (Tamil Nadu) and Delhi (Andhra Pradesh)).

Ecology, Epidemiology and Control

Studies reported by Govindaswamy et al. (1967, Mali (1985, Phatak (1965, Singh et al. (1972).

List of Strains and Isolates in the Species

Coimbatore strain (Govindaswamy et al., 1967).

References

Govindasamy, C.V., Mariappan, V., Kandaswamy, T.K. and Padmanabham, C. (1967). Madras Agric. J. 54: 35.

Hollings, M. and Brunt, A.A. (1981). CMI/AAB Descr. Pl. Viruses No. 245, 7 pp.

Lovisolo, O. and Lisa, V. (1976). 4th Congr. Medit. Phytopath. Union, Poljopr Znanst Smotra 39: 553.

Mali, V.R. (1985). Int. J. Trop. Pl. Dis. 3: 93.

Phatak, H.C. (1965). Curr. Sci. 34: 645.

Singh, S., Varma, A, Chenulu, V.V. and Verma, V.S. (1972). Phytopath. Z. 75: 82.

The following generic references are cited in the most recent ICTV Report.
A description of this taxon can also be found on the web at VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description; VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 16 by V.R. Mali, 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