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00.067.0.81.021. Rottboellia yellowmottle virus

Table of Contents

Taxonomy

Original Source and History of Virus
Virion Properties


Morphology
Physicochemical and Physical Properties
Nucleic Acid
Proteins
Lipids
Carbohydrates

Genome Organization and Replication

Infectivity
Replication
Function of Helper and Satellite Viruses
Cytopathology

Antigenic Properties

Serological Relationships
Diagnosis

Biological Properties

Symptoms and Host Range
Transmission
Geographic Distribution
Ecology and Control
Diagnostic and Methods

Taxonomic Structure
General Comments
References
Data sources and Contributors
Related Databases
Additional Data Sources and Teaching aids

Taxonomy

Virus Code. 00.067.0.81.021. Virus Accession number 67081021.

Virus infects plants.

Virus is presently not recognised by the ICTV. Virus is listed in the plant virus database VIDEdB.

Description is on taxonomic level of species. Virus is an approved species in the genus. Virus belongs to the genus Sobemovirus (VC 00.067.0.01.).

Virus first reported in Rottboellia cochinchinensis syn. R. exaltata. From Nigeria. Reference(s): Thottapilly et al. (1992).

Properties of Virion

Morphology

Virions not enveloped. Nucleocapsids isometric; 29 nm in diameter; appear to be angular.

Physicochemical an Physical Properties

Buoyant density 1.379 g cm-3 in CsCl; density two components in caesium sulphate; 1.29-1.31 and 1.32-1.33 g cm-3. One sedimenting component in purified preparations. Sedimentation coefficient 114 S (decreasing to c. 87S after EDTA treatment. A260/A280 ratio 1.51. Infectivity lost when deproteinised with proteases.

Nucleic Acid

Virions contain one molecule of linear positive-sense single stranded RNA.

Total genome length is 4400 nt. The largest segment 4400 nt. Non-genomic nucleic acid not found in the virions. Genomic nucleic acid isolated by Thottapilly et al., 1992.

Proteins

One structural virion protein found. Protein size 27000 Da. Coat. Method of preparation: Thottapilly et al., 1992.

Genome Organization and Replication

Genomic nucleic acid not infectious.

Cytopathology. Virions found in leaves; in cytoplasm and in cell vacuoles. Inclusions present in infected cells. Inclusions are crystals in the cytoplasm (virion aggregates). They contain virions.

Antigenic Properties

Serological Relationships

Virus(es) with serologically unrelated virions: cocksfoot mild mosaic, cocksfoot mottle, cynosurus mottle, lucerne transient streak, panicum mosaic, rice yellow mottle and sowbane mosaic viruses.

Biological Properties

Symptoms and Host Range

Host of virus belongs to the Domain Eucarya. Host of virus belongs to the Kingdom Plantae.

Natural Host Range and Symptoms

Symptoms persist. Symptoms chlorotic mottling and severe stunting.

Rottboellia cochinchinensis - chlorotic leaf mottling.

Experimental Host Range and Symptoms

Few (<3) families susceptible. Experimentally infected plants mostly show symptoms of systemic chlorotic mottle and stunting.

Diagnostic, Propagational and Assay Host Range


Diagnostic host: susceptible host species and symptoms
Rottboellia cochinchinensis - systemic chlorotic mottle.
Zea mays - chlorotic spots, systemic mottle and stunting.
Diagnostic host: insusceptible host species Chenopodium amaranticolor, Datura stramonium, Glycine max, Oryza sativa, Phaseolus vulgaris, Triticum aestivum.
Maintenance and propagation host species: Rottboellia cochinchinensis.
Assay hosts (Local lesions or Whole plants) Rottboellia cochinchinensis (W), Zea mays (W).

Susceptible Hosts

Experimentally infected species susceptible to virus: Rottboellia cochinchinensis (syn. R. exaltata), or Zea mays.

Insusceptible Hosts

Species inoculated with virus, but tested not to be susceptible: Avena sativa, or Beta vulgaris, or Bromus commutatus, or Bromus sterilis, or Capsicum annuum, or Capsicum frutescens, or Chenopodium amaranticolor, or Chenopodium foliosum, or Chenopodium hybridum, or Cucumis melo, or Cucumis sativus, or Cucurbita maxima, or Cyamopsis tetragonoloba, or Datura stramonium, or Glycine max, or Gomphrena globosa, or Helianthus annuus, or Hordeum vulgare, or Lycopersicon esculentum, or Nicotiana benthamiana, or Nicotiana clevelandii, or Nicotiana glutinosa, or Nicotiana tabacum, or Oryza sativa, or Petunia × hybrida, or Phalaris arundinacea, or Phaseolus lunatus, or Phaseolus vulgaris, or Phleum pratense, or Pisum sativum, or Secale cereale, or Triticum aestivum, or Triticum durum, or Vigna unguiculata.

Families containing susceptible hosts: Gramineae (2/12).

Families containing insusceptible hosts: Amaranthaceae (1/1), or Chenopodiaceae (4/4), or Compositae (1/1), or Cucurbitaceae (3/3), or Gramineae (10/12), or Leguminosae-Papilionoideae (6/6), or Solanaceae (9/9).

Sources of host-range data: Thottapilly et al. (1992).

Transmission

Virus transmitted by mechanical inoculation.

Geographic Distribution

Spreads in Nigeria.

Diagnostic and Methods

Method: Thottapilly et al., 1992.

References

Thottapilly, G., van Lent, J.W.M., Rossel, H.W. and Sehgal, O.P. (1992). Ann. appl. Biol. 120: 405.

Data sources and contributors.

Presented data have been collated for the plant virus database VIDEdB by S.L. Bhattiprolu, 1993.

The description has been generated automatically from DELTA files.

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

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Last updated: 15 June 2004 by Cornelia Büchen-Osmond
Web Page generated from ICTVdB by the DELTA systems.

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