Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cassia yellow spot potyvirus

Index

• Nomenclature
• Host range, transmission and symptoms
• Physical and biochemical properties
• Taxonomy and relationships
• Comments and References

Data collated by A.A. Brunt and O. Lovisolo, 1992.

Nomenclature

Synonyms

cassia yellow blotch virus.

Acronym

CasYSV

ICTV decimal code

57.0.1.T.015

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Cassia hoffmanseggi - chlorotic leaf blotching.

Transmission

Transmitted by a vector; an insect; Myzus persicae, Uroleucon ambrosiae; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; transmitted by seed (in Cassia occidentalis (Souto et al., 1990)).

Geographical distribution

Found, but with no evidence of spread, in Brazil (Pernambuco State).

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show systemic mosaic, crinkle and growth reduction, necrotic local lesions.

Diagnostically susceptible 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.

Diagnostically insusceptible host species

Gomphrena globosa, Cucumis melo, Pisum sativum, Nicotiana glutinosa, N. tabacum.

Maintenance and propagation hosts

Phaseolus vulgaris.

Assay hosts (Local lesions or Whole plants)

Phaseolus vulgaris (L and W), Chenopodium amaranticolor (L), Canavalia ensiformis (W), Crotalaria juncea (W).

Susceptible host species

• 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

Insusceptible host species

• 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

Families containing susceptible hosts

• Chenopodiaceae (1/1)
• Cucurbitaceae (1/3)
• Leguminosae-Caesalpinioideae (2/3)
• Leguminosae-Papilionoideae (8/11)
• Pedaliaceae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Compositae (2/2)
• Cruciferae (1/1)
• Cucurbitaceae (2/3)
• Leguminosae-Caesalpinioideae (1/3)
• Leguminosae-Papilionoideae (4/11)
• Solanaceae (3/3)

Sources of host-range data

Souto (1990).

Physical and biochemical properties

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 700 nm. Axial canal obscure.

Cytopathology

Virions found in leaves and mesophyll; in cytoplasm. Inclusions present in infected cells; are pinwheels.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically related virions

Bean common mosaic, canavalia acronecrosis, carnation vein mottle and passionfruit woodiness viruses.

Virus(es) with serologically unrelated virions

Blackeye cowpea mosaic, papaya ringspot and watermelon mosaic viruses (Lovisolo and Kitajima, 1992; Lovisolo et al., 1991).

Comments and References

General comments

This virus was first designated cassia yellow blotch virus (Paguio and Kitajima, 1980 and 1981) but, to avoid confusion with cassia yellow blotch bromovirus, 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.A.A., 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, A.F. (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.

Cite this publication as: Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.) (1996 onwards). `Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 20^th August 1996.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.