Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Asystasia gangetica mottle (?) potyvirus

Index

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

Data collated by J.-C.Thouvenel, 1986. Revised 1989.

Nomenclature

Acronym

AGMoV

ICTV decimal code

57.0.1.T.007

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Asystasia gangetica - vein mottle, lines and ringspots.

Transmission

Transmitted by a vector; an insect; Aphis spiraecola; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; transmitted by grafting; not transmitted by seed.

Geographical distribution

Spreads in the African region; the Congo, Cote d'Ivoire, and Guinea.

Experimental host range

Several (3-9) families susceptible. Experimentally infected plants mostly show local lesions, mosaics, ringspots.

Diagnostically susceptible host species and symptoms

• Chenopodium amaranticolor, Tetragonia tetragonioides - necrotic local lesions; not systemic.
• Nicotiana benthamiana - systemic mosaic, leaf curling.
• Nicotiana megalosiphon - systemic mottling.
• Nicotiana tabacum cvs Samsun NN and Xanthi-nc - necrotic ringspots and line pattern.
• Antirrhinum majus, Phaseolus vulgaris - systemic chlorosis.
• Sesamum indicum - systemic chlorotic spotting.

Diagnostically insusceptible host species

Cucurbita spp., Cucumis spp., Nicotiana glutinosa, Vigna unguiculata.

Maintenance and propagation hosts

Nicotiana benthamiana.

Assay hosts (Local lesions or Whole plants)

Nicotiana benthamiana (W), Chenopodium amaranticolor (L).

Susceptible host species

• Antirrhinum majus
• Asystasia gangetica
• Chenopodium amaranticolor
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana megalosiphon
• Nicotiana tabacum
• Phaseolus vulgaris
• Sesamum indicum
• Solanum nigrum
• Tetragonia tetragonioides

Insusceptible host species

• Abelmoschus esculentus
• Arachis hypogaea
• Cucumis melo
• Cucumis sativus
• Cucurbita maxima
• Cucurbita moschata
• Cucurbita pepo
• Momordica balsamina
• Nicotiana glutinosa
• Vigna unguiculata
• Vigna unguiculata ssp. cylindrica
• Zea mays

Families containing susceptible hosts

• Acanthaceae (1/1)
• Chenopodiaceae (1/1)
• Leguminosae-Papilionoideae (1/4)
• Pedaliaceae (1/1)
• Scrophulariaceae (1/1)
• Solanaceae (5/6)
• Tetragoniaceae (1/1)

Families containing insusceptible hosts

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

Sources of host-range data

Thouvenel et al. (1988).

Physical and biochemical properties

Properties of particles in sap

TIP: 70-75 °C. LIV: 3 days. DEP: log₁₀ minus 3-4. Infectivity of sap not changed by treatment with di-ethyl ether. Leaf sap contains few virions.

Purification method

Thouvenel et al. (1982).

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 750 nm; 13 nm wide. Axial canal obscure. Basic helix obscure.

Physical properties

One sedimenting component in purified preparations.

Biochemical properties

Virions contain 5 % nucleic acid; 95 % protein.

Features of proteins

Virion protein(s) one; M_r 33000; coat protein. Amino acid composition: Fauquet and Thouvenel (1987).

Cytopathology

Virions found in all parts of the host plant. Inclusions present in infected cells; are pinwheels.

Taxonomy and relationships

Possible Potyvirus: Potyviridae

Virus(es) with serologically unrelated virions

30 other group members tested.

Comments and References

References

• Fauquet, C. and Thouvenel, J.-C. (1987). In: Plant Viral Diseases in the Ivory Coast, pp. 228; Initiations, Documentations, Techniques. No.46. ORSTOM. Paris.
• Thouvenel, J.-C. Fauquet, C. and Monsarrat, A. (1982). C.r. Acad. Sci. Paris 295: 213.
• Thouvenel, J.-C., Fauquet, C. and Fargette, D. (1988). Ann. appl. Biol. 112: 127.

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.