Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Potyviruses:
Potyviridae
Index
Nomenclature
ICTV reference
Definitive species
Tentative species
Host range and
symptoms
Natural host range and symptoms
Symptoms
persist (86/99), or vary cyclically over a few weeks (3/99), or vary seasonally
(9/99), or disappear soon after infection (7/99), or none (3/99).
Transmission
Transmitted by a vector (105/106), or means
not involving a vector (1/106); an insect (105/105); Aphididae (105/105).
Transmitted in a non-persistent manner (99/99). Virus does not require a
helper virus for vector transmission (8/8), or can help the vector transmission
of another virus (2/8); transmitted by mechanical inoculation (111/113), or not
transmitted by mechanical inoculation (2/113); transmitted by grafting (30/32),
or not transmitted by grafting (2/32); transmitted by contact between plants
(2/38), or not transmitted by contact between plants (36/38); transmitted by
seed (16/68), or not transmitted by seed (52/68); transmitted by pollen to the
seed (3/20), or transmitted by pollen to the pollinated plant (1/20), or not
transmitted by pollen (17/20).
Experimental host range
Many (>9) families susceptible
(8/111), or several (3-9) families susceptible (53/111), or few (<3) families
susceptible (50/111).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Physical and
biochemical properties
Properties of particles in sap
TIP:
44-59.1-90 °C. LIV: 0.125-7.283-64 days. DEP: log10 minus 1 (5/91), or 2
(23/91), or 3-4 (49/91), or 5 (25/91), or 6 (12/91), or 7 (2/91), or 8 (1/91).
Infectivity of sap increased by treatment with di-ethyl ether (2/13), or
decreased by treatment with di-ethyl ether (1/13), or not changed by
treatment with di-ethyl ether (11/13). Leaf sap contains few virions (76/87),
or contains many virions (12/87).
Particle morphology
Virions filamentous (120/120); not
enveloped (99/99); usually flexuous (116/116); with a clear modal length
(109/111), or with no clear modal length (2/111); of 650-758.4-900 nm;
11-12.86-20 nm wide. Axial canal obvious (5/84), or obscure (79/84); 2-2.5-3 nm
in diameter. Basic helix obvious (5/71), or obscure (66/71); pitch of basic
helix 3.3-3.38-3.4 nm.
Physical properties
One sedimenting component in purified
preparations (61/61), or two sedimenting components in purified preparations
(2/61); sedimentation coefficient 140-151.4-180 S; of the other(s)
150-155-160 S. Density 1.26-1.316-1.336 g cm-3 in CsCl. Density
1.326-1.328-1.33 g cm-3 in sucrose. Isoelectric point pH 4.3-4.65-5.3.
A260/A280 ratio 0.77-1.417-2.9.
Biochemical properties
Virions contain 4-5.466-7 %
nucleic acid; 93-94.63-96 % protein; 0 % lipid.
Genome consists of RNA (46/46); single-stranded (46/46); linear (25/25).
Total genome size 9-10.08-12 kb. Genome unipartite (29/29); largest (or only)
genome part 9-10.08-12 kb. Base composition 21-23.51-26 % G; 23-30.15-44 % A;
14.9-22.41-28 % C; 15.6-24.41-30.9 % U. 5´ terminus of RNA has a VPg (4/4).
Infectivity retained when deproteinised with proteases (1/3), or decreased when
deproteinised with proteases (2/3), or lost when deproteinised with proteases
(1/3); retained when deproteinised with phenol or detergent (7/7). Poly A region
present (9/9). Additional factor not required for infectivity (5/5).
Features of the genome
Non-genomic nucleic acid
not found in the virions (7/7). Sub-genomic mRNA not found in infected
cells (1/1).
Features of proteins
Virion protein(s) one (45/49),
or two (2/49), or three (1/49), or five (1/49); Mr 28300-33940-54100.
Mr of 2nd largest 29000-34630-39900. Mr of 3rd largest
27000-30500-34000. Mr of 4th largest 33000. Mr of 5th
largest 32000.
Virus-coded non-virion proteins isolated (8/12), or identified by
genomic sequence analysis (4/12); one protein found (2/12), or two proteins
found (5/12), or three proteins found (1/12), or four proteins found (1/12), or
five proteins found (1/12), or seven proteins found (2/12). Mr
39000-63900-81000. Mr of 2nd largest 49000-53750-70000. Mr
of 3rd 47000-50000-53000. Mr of 4th 49000-59750-70000. Mr of
5th and smaller 34000-45830-69000.
Replication
Genome replicates in cytoplasm (3/3).
Replication does not depend on a helper virus (29/29). Acts as helper for
another virus (1/1).
Cytopathology
Virions found in cytoplasm (78/79), or in
nuclei (1/79), or in chloroplasts (1/79), or in Golgi apparatus (1/79), or in
cell vacuoles (2/79), or in unusual sites (2/79). Inclusions present in infected
cells (93/95), or absent from infected cells (2/95); are crystals in the
cytoplasm (9/94), or crystals in the nucleus (8/94), or amorphous X-bodies
(6/94), or membranous bodies (1/94), or viroplasms (2/94), or pinwheels (84/94),
or unusual in shape (34/94); they contain virions (7/65), or they do not contain
virions (59/65).
Taxonomy and
relationships
Viral family : Potyviridae.
Illustrations
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: 16th January 1997.' URL
http://biology.anu.edu.au/Groups/MES/vide/
Dallwitz (1980)
and
Dallwitz, Paine and Zurcher (1993)
should also be cited.
Please send comments, corrections and suggestions to:
vide-manager@biology.anu.edu.au
