Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Clover yellow mosaic potexvirus

Index

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

Data collated by O.W. Barnett, R.H. Baum, S. Scott, B. Reddick and J.C. Tu, 1981. Revised 1983.

Nomenclature

Synonyms

pea mottle virus.

Acronym

ClYMV

Strains

broad bean mild mosaic virus (Yu, 1979).

ICTV decimal code

56.0.1.0.005

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Trifolium spp., Pisum sativum, Chenopodium album, Malus pumila, Medicago alba, M. sativa, Vicia sativa, Stellaria media - mosaic with necrotic streaks.

Transmission

Not transmitted by Acyrthosiphon pisum, Anuraphis bakeri (Pratt 1961; Purcifull 1968). Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in Canada (in the south-west), the USA (in the north-west).

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show chlorotic or necrotic local lesions, systemic mosaic.

Diagnostically susceptible host species and symptoms

• Chenopodium quinoa, Gomphrena globosa - systemic mosaic.
• Medicago sativa - local lesions (some strains only).
• Pisum sativum - necrotic local lesions, systemic mosaic.
• Vigna unguiculata - local infection.

Maintenance and propagation hosts

Phaseolus vulgaris, Pisum sativum.

Assay hosts (Local lesions or Whole plants)

Gomphrena globosa, Chenopodium quinoa.

Susceptible host species

• Amaranthus caudatus
• Arachis hypogaea
• Beta vulgaris
• Catharanthus roseus
• Chenopodium album
• Chenopodium amaranticolor
• Chenopodium quinoa
• Cucumis sativus
• Cucurbita maxima
• Glycine max
• Gomphrena globosa
• Helianthus annuus
• Lablab purpureus
• Lactuca sativa
• Lathyrus odoratus
• Malus pumila
• Medicago alba
• Medicago sativa
• Melilotus albus
• Nicotiana debneyi
• Nicotiana megalosiphon
• Phaseolus lunatus
• Phaseolus vulgaris
• Pisum sativum
• Solanum melongena
• Spinacia oleracea
• Stellaria media
• Tithonia speciosa
• Torenia fournieri
• Trifolium hybridum
• Trifolium incarnatum
• Trifolium pratense
• Trifolium repens
• Vicia faba
• Vicia sativa
• Vicia villosa
• Vigna radiata
• Vigna unguiculata
• Vigna unguiculata ssp. sesquipedalis

Insusceptible host species

• Antirrhinum majus
• Capsicum annuum
• Cassia occidentalis
• Cucumis sativus
• Cucurbita pepo
• Datura stramonium
• Lespedeza stipulacea
• Lilium formosanum
• Lycopersicon esculentum
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana rustica
• Nicotiana tabacum
• Nicotiana × edwardsonii
• Petunia × hybrida
• Raphanus sativus
• Zea mays
• Zinnia elegans

Families containing susceptible hosts

• Amaranthaceae (2/2)
• Apocynaceae (1/1)
• Caryophyllaceae (1/1)
• Chenopodiaceae (5/5)
• Compositae (3/4)
• Cucurbitaceae (2/3)
• Leguminosae-Papilionoideae (20/21)
• Rosaceae (1/1)
• Scrophulariaceae (1 /2)
• Solanaceae (3/12)

Families containing insusceptible hosts

• Compositae (1/4)
• Cruciferae (1/1)
• Cucurbitaceae (2/3)
• Gramineae (1/1)
• Leguminosae-Caesalpinioideae (1/1)
• Leguminosae-Papilionoideae (1/21)
• Liliaceae (1/1)
• Scrophulariaceae (1/2)
• Solanaceae (9 /12)

Sources of host-range data

Pratt (1961); Hampton et al. (1978a); Rao et al. (1980).

Physical and biochemical properties

Properties of particles in sap

TIP: 60-65 °C. LIV: 188 days (or more). DEP: log₁₀ minus 5-6. Leaf sap contains many virions.

Purification method

Barnett and Gibson (1975); Rao et al. (1980); Welsh et al. (1973).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 540 nm; 13 nm wide.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 132 S. Isoelectric point pH 5.3.

Biochemical properties

Genome consists of RNA; single-stranded; linear. Total genome size 7.015 kb. Largest (or only) genome part 7.015 kb.

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• D00485 Em(40)_vi:CYMVCP Gb(84)_vi:CYMVCP Clover yellow mosaic potexvirus genomic RNA, 3´-terminal region. 4/90 1,051bp.
• D29630 Em(40)_vi:CYMRNA Gb(84)_vi:CYMRNA Clover yellow mosaic potexvirus genomic RNA, complete sequence. 3/94 7,015bp.
• M63511 Em(40)_vi:CYMCPFP Gb(84)_vi:CYMCPFP Clover yellow mosaic potexvirus non-structural/coat protein fusion product RNA, complete cds.
• M63512 Em(40)_vi:CYMCPFPD Gb(84)_vi:CYMCPFPD Clover yellow mosaic potexvirus non-structural/coat protein fusion product RNA, complete cds.
• M63513 Em(40)_vi:CYMCPFPG Gb(84)_vi:CYMCPFPG Clover yellow mosaic potexvirus non-structural/coat protein fusion product RNA, complete cds.
• M63514 Em(40)_vi:CYMCPFPS Gb(84)_vi:CYMCPFPS Clover yellow mosaic potexvirus non-structural/coat protein fusion product RNA, complete cds. 6 sequences.

Cytopathology

Virions found in mesophyll and parenchyma cells; in cytoplasm. Inclusions present in infected cells; are unusual in shape; banded and of complex structures; they contain virions.

Taxonomy and relationships

Potexvirus

Virus(es) with serologically related virions

White clover mosaic, cactus X and hydrangea ringspot viruses, but distantly.

Best tests for diagnosis

Often found with white clover mosaic potexvirus (WCMV) but causes systemic mosaic in Chenopodium quinoa, which WCMV infects only locally. By contrast WCMV infects Vigna unguiculata systemically, but CYMV only locally.

Comments and References

References

• Agrawal, H., Bos, L. and Chessin, M. (1962). Phytopathology 62: 517.
• Barnett, O.W. and Gibson, P.B. (1975). Crop Sci. 15: 32.
• Bos, L. (1973). CMI/AAB. Descr. Pl. Viruses No. 111, 4 pp.
• Ford, R.E. (1973). Phytopathology 63: 926.
• Hampton, R., Beczner, L., Hagedorn, D., Bos, L., Inouye, T., Barnett, O., Musil, M. and Meiners, J. (1978). Phytopathology 68: 989.
• Johnson, F. (1942). Phytopathology 32: 103.
• Pratt, M.J. (1961). Can. J. Bot. 39: 655.
• Pratt, M.J. (1967). Can. J. Pl. Sci. 47: 289.
• Pratt, M.J. and Reichmann, M.E. (1961). Proc. Can. Phytop. Soc. 28: 13.
• Purcifull, D.E. (1968). Pl. Dis. Reptr. 52: 759.
• Purcifull, D.E. and Shepherd, R.J. (1964). Phytopathology 54: 1102.
• Rao, D.V., Hiruki, C. and Matsumoto, T. (1980). Phytopath. Z. 98: 260.
• Sit, T.L., White, K.A., Holy, S., Padmanabhan, U., Eweida, M., Heibert, M., Mackie, G.A. and Abouhaidar, M. J. gen. Virol. 71: 1990.
• Welsh, M.F., Stace-Smith, R. and Brennan, E. (1973). Phytopathology 63: 50.
• Yu, Y. (1979). In: Vicia Faba Diseases, Scientific Press, Peking (in Chinese).

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.