Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Pokeweed mosaic 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 P. Jeyanandarajah, 1991.

Nomenclature

Acronym

PkMV

ICTV decimal code

57.0.1.0.055

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Phytolacca americana - chlorotic leaf mottling.

Transmission

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

Geographical distribution

Spreads in the USA (central, southern and eastern states).

Experimental host range

Few (<3) families susceptible.

Diagnostically susceptible host species and symptoms

• Phytolacca americana - systemic chlorotic mottling and malformation.
• Chenopodium quinoa - chlorotic local lesions; not systemic.
• Gomphrena globosa - chlorosis and necrotic spotting of systemically infected leaves.

Maintenance and propagation hosts

Phytolacca americana.

Assay hosts (Local lesions or Whole plants)

Chenopodium quinoa (L).

Susceptible host species

• Chenopodium quinoa
• Gomphrena globosa
• Phytolacca americana

Insusceptible host species

• Antirrhinum majus
• Beta vulgaris
• Brassica oleracea var. capitata
• Capsicum frutescens
• Celosia argentea
• Chenopodium amaranticolor
• Chenopodium capitatum
• Citrullus lanatus
• Cucumis sativus
• Cucurbita pepo
• Dahlia pinnata
• Datura stramonium
• Lycopersicon esculentum
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana tabacum
• Phaseolus vulgaris
• Pisum sativum
• Solanum melongena
• Spinacia oleracea
• Vigna unguiculata
• Zinnia elegans

Families containing susceptible hosts

• Amaranthaceae (1/2)
• Chenopodiaceae (1/5)
• Phytolaccaceae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (1/2)
• Chenopodiaceae (4/5)
• Compositae (2/2)
• Cruciferae (1/1)
• Cucurbitaceae (3/3)
• Leguminosae-Papilionoideae (3/3)
• Scrophulariaceae (1/1)
• Solanaceae (7/7)

Physical and biochemical properties

Properties of particles in sap

TIP: 70-75 °C. LIV: 10 days (at 25ºC). DEP: log₁₀ minus 5-6.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 776 nm; 12-13 nm wide. Axial canal obscure. Basic helix obscure.

Cytopathology

Inclusions present in infected cells; are pinwheels; they do not contain virions.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically related virions

Henbane mosaic, potato Y and tobacco etch viruses.

Comments and References

References

• Shepherd, R.J., Fulton, J.P. and Wakeman, R.J. (1969). Phytopathology 59: 219.
• Woods, A.F. (1902). Bull. Bur. Pl. Ind. US Dep. Agric. 18: 24.

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.