Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Squash leaf curl bigeminivirus

Index

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

Data collated by A.A. Brunt, S. Molyneux and S. Cohen, 1986.

Nomenclature

Synonyms

probably muskmelon necrotic mosaic virus.

Acronym

SLCV

ICTV decimal code

29.0.3.0.035

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Cucurbita pepo - severe stunting and leaf curl.
• Cucurbita moschata, C. pepo, Phaseolus vulgaris.

Transmission

Transmitted by a vector; an insect; Bemisia tabaci; Aleyrodidae. Transmitted in a persistent manner. Virus not transmitted by mechanical inoculation.

Ecology and control

Studies reported by Cohen et al. (1983).

Geographical distribution

Spreads in the USA (California).

Diagnostically susceptible host species and symptoms

• Cucurbita pepo, Cucurbita maxima, Cucurbita moschata - severe stunting and leaf curling.
• Phaseolus vulgaris - green mosaic leaf symptoms and deformation.

Diagnostically insusceptible host species

Beta vulgaris, Cucumis melo, Cucumis sativus, Lycopersicon esculentum, Pisum sativum.

Maintenance and propagation hosts

Cucurbita pepo.

Assay hosts (Local lesions or Whole plants)

Cucurbita maxima (W), Cucurbita moschata (W), Cucurbita pepo (W), Phaseolus vulgaris (W).

Susceptible host species

• Cucurbita maxima
• Cucurbita moschata
• Cucurbita pepo
• Phaseolus vulgaris

Insusceptible host species

• Abelmoschus esculentus
• Beta macrocarpa
• Beta vulgaris
• Brassica oleracea var. botrytis
• Capsella bursa-pastoris
• Carthamus tinctorius
• Chenopodium murale
• Cichorium endiva
• Citrullus vulgaris
• Cucumis melo
• Cucumis sativus
• Daucus carota
• Gossypium hirsutum
• Helianthus annuus
• Lactuca sativa
• Lycopersicon esculentum
• Medicago sativa
• Pisum sativum
• Sonchus oleraceus
• Spinacia oleracea
• Trifolium subterraneum
• Zinnia elegans

Families containing susceptible hosts

• Cucurbitaceae (3/6)
• Leguminosae-Papilionoideae (1/4)

Families containing insusceptible hosts

• Chenopodiaceae (4/4)
• Compositae (6/6)
• Cruciferae (2/2)
• Cucurbitaceae (3/6)
• Leguminosae-Papilionoideae (3/4)
• Malvaceae (2/2)
• Solanaceae (1/1)
• Umbelliferae (1/1)

Purification method

Cohen et al. (1983).

Physical and biochemical properties

Particle morphology

Virions geminate; 22 nm in diameter.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• L20240 Em(40)_vi:CPBR1A Gb(84)_vi:SQLBR1A Squash leaf curl virus movement protein (BR1) gene, complete cds. 11/93 765bp.
• L27272 Em(40)_vi:GESQLAC1A Gb(84)_vi:SQLAC1A Squash leaf curl virus replication-associated protein (AC1) gene, partial cds. 1/94 279bp.
• L27273 Em(40)_vi:GESQLBC1A Gb(84)_vi:SQLBC1A Squash leaf curl virus movement protein (BC1) gene, partial cds. 1/94 141bp.
• M38182 Em(40)_vi:GESQLCVE Gb(84)_vi:SQLCVE Squash leaf curl virus circular viral B component DNA. 6/92 2,607bp.
• M38183 Em(40)_vi:GESQLCVEA Gb(84)_vi:SQLCVEA Squash leaf curl virus circular viral A component DNA. 6/92 2,634bp.
• M63155 Em(40)_vi:GESQLC01 Gb(84)_vi:SQLCVRAA Squash leaf curl virus A component DNA. 8/93 212bp.
• M63156 Em(40)_vi:GESQLCVR Gb(84)_vi:SQLCVRAB Squash leaf curl virus B component DNA. 3/91 214bp.
• M63157 Em(40)_vi:GESQLC03 Gb(84)_vi:SQLCVEAA Squash leaf curl virus A component DNA. 8/93 228bp.
• M63158 Em(40)_vi:GESQLC02 Gb(84)_vi:SQLCVEAB Squash leaf curl virus B component DNA. 3/91 229bp. 9 sequences.
• S77090 Gb(90)_un:S77090 CP=coat protein (Chinese squash leaf curl virus SqLCV-C, Genomic, 771 nt). 7/95 771bp.

Taxonomy and relationships

bigeminivirus: Geminiviridae

Virus(es) with serologically related virions

African cassava mosaic virus.

Virus(es) with serologically unrelated virions

Bean golden mosaic, beet curly top and tobacco yellow dwarf viruses.

Comments and References

References

• Cohen, S., Duffus, J.E., Larsen, R.C., Liu, H.Y. and Flock, R.A. (1983). Phytopathology 73: 1669.

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.