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00.057.0.81.015. Cassia yellow spot virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.81.015. Cassia yellow spot 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: Pernambuco State; Brazil.

Host of Isolate and Habitat Details
Source of isolate: Cassia hoffmanseggi.

Natural host and symptoms
Cassia hoffmanseggi — chlorotic leaf blotching.

Reference to Isolation Report
Paguio and Kitajima (1981).

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: 00.057.0.81.015. Virus accession number: 57081015. Obsolete virus code: 57.0.1.T.015; superceded accession number: 5701t015.

Name, Synonyms and Lineage

Synonym(s): cassia yellow blotch virus. ICTV approved acronym: CasYSV. Virus is an ICTV approved species 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 nm. Axial canal is indistinct.

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 bean common mosaic, canavalia acronecrosis, carnation vein mottle and passionfruit woodiness viruses. The virus does not show serological relationships to blackeye cowpea mosaic, papaya ringspot and watermelon mosaic viruses (Lovisolo and Kitajima, 1992; Lovisolo et al., 1991).

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 a vector. Virus is transmitted by mechanical inoculation; transmitted by seeds (in Cassia occidentalis (Souto et al., 1990)).

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Myzus persicae, Uroleucon ambrosiae. Virus is transmitted in a non-persistent manner.

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, Cucurbitaceae, Leguminosae-Caesalpinioideae, Leguminosae-Papilionoideae, Pedaliaceae. The following species were susceptible to experimental virus infection: Canavalia ensiformis, Cassia hoffmanseggi, Cassia occidentalis, Chenopodium amaranticolor, Crotalaria juncea, Crotalaria spectabilis, Cucurbita pepo, Glycine max, Phaseolus lunatus, Phaseolus vulgaris, Sesamum indicum, Vigna radiata, Vigna unguiculata.

Host:
Experimentally infected hosts mainly show symptoms of systemic mosaic, crinkle and growth reduction, necrotic local lesions.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Amaranthaceae, Compositae, Cruciferae, or Cucurbitaceae, Leguminosae-Caesalpinioideae, Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Arachis hypogaea, Capsicum annuum, Cassia tora, Cucumis melo, Cucumis sativus, Gomphrena globosa, Lactuca sativa, Lupinus luteus, Nicotiana glutinosa, Nicotiana tabacum, Phaseolus vulgaris, Pisum sativum, Raphanus sativus, Zinnia elegans.

Diagnostic Hosts

Diagnostic host species and symptoms:

Cassia occidentalis, Phaseolus vulgaris, Canavalia ensiformis — systemic mosaic, crinkle and growth reduction.

Vigna unguiculata (some cvs), Sesamum indicum — mosaic.

Glycine max — latent.

Chenopodium amaranticolor — necrotic local lesions.

Diagnostic host: insusceptible host species Gomphrena globosa, Cucumis melo, Pisum sativum, Nicotiana glutinosa, N. tabacum.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Phaseolus vulgaris.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Phaseolus vulgaris (L and W), Chenopodium amaranticolor (L), Canavalia ensiformis (W), Crotalaria juncea (W).

References to host data: Souto (1990).

Histopathology: Virus can be best detected in leaves and mesophyll. 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.

Geographical Distribution

The virus is found, but with no evidence of proliferation, in Brazil (Pernambuco State).

Comments

This virus was first designated cassia yellow blotch virus (Paguio and Kitajima, 1980 and 1981) but, to avoid confusion with cassia yellow blotch virus, its name was later changed (Souto et al., 1989).

References

Costa, C.L., Kitajima, E.W. and Marinho, V.L.A. (1989). Fitopatol. Bras. 14: 115.

Lovisolo, O. and Kitajima, E.W. (1992). Arch. Virol., Suppl. 5: in press.

Lovisolo, O., De Sa, P.B., Lima, J.AA, Costa, C.L. and Kitajima, E.W. (1991). Fitopatol. Bras. 16: 24.

Lovisolo, O., Marinho, V.L.A., Souto, E., Costa, C.L. and Kitajima, E.W. (1989). Fitopatolo. Bras. 14: 119.

Paguio, D.R. and Kitajima, E.W. (1980). Fitopatol. Bras. 5: 436.

Paguio, D.R. and Kitajima, E.W. (1981). Fitopatol. Bras. 6: 187.

Souto, E.R. (1990). Inst. Cienc. Biol. Univ. de Brasilia, 93 pp.

Souto, E.R. and Kitajima, E.W. (1991). Fitopatol. Bras. 16: in press.

Souto, E.R. and Kitajima, E.W. (1991). Fitopatol. Bras. 16: 256.

Souto, E.R., Costa, C.L. and Kitajima, E.W. (1990). Fitopatol. Bras. 15: 136.

Souto, E.R., Kitajima, E.W., Marinho, V.L.A. and Costa, AF (1988). Fitopatol. Bras. 13: 145.

Souto, E.R., Marinho, V.L.A., Oliveira, C.R.B. and Kitajima, E.W. (1989). Fitopatol. Bras. 14: 114.

The following generic references are cited in the most recent ICTV Report.
A description of this taxon in VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 183 by A.A. Brunt and O. Lovisolo, 1992.



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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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