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00.057.0.81.051. Melilotus mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.81.051. Melilotus 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: Aligarh; India.

Host of Isolate and Habitat Details
Source of isolate: Melilotus indicus.

Natural host and symptoms
Melilotus indicus — leaf mosaic, mottling and stunting.

Reference to Isolation Report
Naqvi and Mahmood (1978).

Classification

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

ICTVdB Virus Code: 00.057.0.81.051. Virus accession number: 57081051. Obsolete virus code: 57.0.1.T.051; superceded accession number: 5701t051.

Name, Synonyms and Lineage

ICTV approved acronym: MeMV. Virus is a tentative member 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 length of 600-620 nm and a width of 12 nm.

Electron microscopic preparation and references: Reference for electron microscopic methods: Naqvi and Mahmood (1978).

Physicochemical and Physical Properties

The sedimentation coefficient is 118 S20w. The thermal inactivation point (TIP) is at 60°C. The longevity in vitro (LIV) is 4 days (at 25°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 tobacco etch virus.

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; not transmitted by seeds.

Vector Transmission: Virus is not transmitted by Aphis craccivora, A gossypii.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in several families. Susceptible host species are found in the Family Chenopodiaceae, Leguminosae-Papilionoideae, Solanaceae, Tetragoniaceae, Verbenaceae. The following species were susceptible to experimental virus infection: Cajanus cajan, Chenopodium amaranticolor, Crotalaria medicaginea, Datura stramonium, Lycopersicon esculentum, Melilotus indicus, Nicotiana glutinosa, Nicotiana rustica, Nicotiana tabacum, Petunia x hybrida, Solanum tuberosum, Tetragonia tetragonioides, Verbena hybrida.

Diagnostic Hosts

Diagnostic host species and symptoms:

Chenopodium amaranticolor, Tetragonia tetragonioides, Verbena hybrida — local lesions.

Cajanus cajan, Crotalaria medicaginea, Datura stramonium, Nicotiana glutinosa, N. tabacum, Petunia x hybrida — systemic leaf chlorosis, necrosis and distortion.

Maintenance and Propagation Hosts

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

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Chenopodium amaranticolor (L).

References to host data: Naqvi and Mahmood (1978).

Geographical Distribution

The virus occurs in India.

Comments

Although reported to be serologically related to tobacco etch virus, the virus has unusually short virions for a potyvirus.

References

Naqvi, Q.A. and Mahmood, K. (1978). Phytopath. Z. 93: 249.

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 485 by A.A. Brunt, 1991.



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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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