Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Arracacha Y 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 S. Phillips, 1986.

Nomenclature

Acronym

AVY.

ICTV decimal code

57.0.1.T.006

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Arracacia xanthorrhiza - leaf chlorosis.

Transmission

Transmitted by a vector; an insect; Myzus persicae, Aphis gossypii; Aphididae. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; not transmitted by contact between plants; not transmitted by seed; not transmitted by pollen.

Geographical distribution

Spreads in the South and Central American region; Peru.

Experimental host range

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

Diagnostically susceptible host species and symptoms

• Chenopodium amaranticolor, C. quinoa - chlorotic or necrotic local lesions; not systemic.
• Nicotiana clevelandii - systemic veinal chlorosis.
• N. benthamiana - systemic chlorosis and malformation.
• N. tabacum, N. sylvestris - chlorotic local lesions; not systemic.

Diagnostically insusceptible host species

Vigna unguiculata, Gomphrena globosa, Ullucus tuberosus.

Maintenance and propagation hosts

Nicotiana clevelandii, Nicotiana benthamiana.

Assay hosts (Local lesions or Whole plants)

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

Susceptible host species

• Arracacia xanthorrhiza
• Chenopodium amaranticolor
• Chenopodium murale
• Chenopodium quinoa
• Nicotiana benthamiana
• Nicotiana clevelandii
• Nicotiana sylvestris
• Nicotiana tabacum
• Tetragonia tetragonioides

Insusceptible host species

• Brassica campestris ssp. pekinensis
• Cucumis sativus
• Datura metel
• Datura stramonium
• Gomphrena globosa
• Lycopersicon esculentum
• Phaseolus vulgaris
• Pisum sativum
• Solanum demissum
• Trifolium incarnatum
• Ullucus tuberosus
• Vicia faba
• Vigna unguiculata

Families containing susceptible hosts

• Chenopodiaceae (3/3)
• Solanaceae (4/8)
• Tetragoniaceae (1/1)
• Umbelliferae (1/1)

Families containing insusceptible hosts

• Amaranthaceae (1/1)
• Basellaceae (1/1)
• Cruciferae (1/1)
• Cucurbitaceae (1/1)
• Leguminosae-Papilionoideae (5/5)
• Solanaceae (4/8)

Physical and biochemical properties

Properties of particles in sap

TIP: 65-70 °C (in Nicotiana clevelandii sap). LIV: 32 days. DEP: log₁₀ minus 3. Leaf sap contains few virions.

Purification method

A.A. Brunt and R.S. Phillips: blend the leaves in 0.067 M P0₄ + 0.1% mercapto acetic acid, clarify with 8.0% butanol and then differentially centrifuge twice.

Particle morphology

Virions filamentous; not enveloped; usually flexuous; with a clear modal length; of 750 nm; 12 nm wide. Axial canal obscure. Basic helix obscure.

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in all parts of the host plant.

Taxonomy and relationships

Potyvirus: Potyviridae

Virus(es) with serologically related virions

Datura shoestring (SDI 6), sweet potato feathery mottle (SDI 2-3), ullucus mosaic (SDI 7) and watermelon mosaic 2 (SDI 7) viruses.

Virus(es) with serologically unrelated virions

Bean common mosaic, bean yellow mosaic, beet mosaic, bidens mottle, carnation vein mottle, clover yellow vein, commelina mosaic, freesia mosaic, henbane mosaic, hippeastrum mosaic, iris mild mosaic, lettuce mosaic, passion fruit woodiness, peanut mottle, pepper veinal mottle, potato Y, tobacco etch, tulip breaking and turnip mosaic viruses.

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.