Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Hordeiviruses
Index
Nomenclature
ICTV reference
Definitive species
Host range and
symptoms
Natural host range and symptoms
Symptoms
persist (3), or disappear soon after infection (1).
Transmission
Transmitted by means not involving a vector
(1/1). Virus transmitted by mechanical inoculation; transmitted by grafting
(1/1); transmitted by seed (2/3), or not transmitted by seed (1/3); transmitted
by pollen to the pollinated plant (1/1).
Experimental host range
Many (>9) families susceptible
(1/3), or several (3-9) families susceptible (1/3), or few (<3) families
susceptible (1/3).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Physical and
biochemical properties
Properties of particles in sap
TIP:
60-65.5-68 °C. LIV: 15-69.25-120 days. DEP: log10 minus 2 (1/2), or 3 (2/2),
or 4 (1/2). Leaf sap contains few virions (1/1).
Particle morphology
Virions rod-shaped; not enveloped;
usually straight; with a clear modal length (2), or with no clear modal length
(1), or with clear modal lengths (1); of 100-144-175 nm; 18-23.25-25 nm wide.
Axial canal obvious (2/2); 3-3.5-4 nm in diameter. Basic helix obvious (3/3);
pitch of basic helix 2.5-2.55-2.6 nm.
Physical properties
Three sedimenting components in
purified preparations (1/1); sedimentation coefficient 199 S; of the
other(s) 166-180-194 S. Isoelectric point pH 4.5. A260/A280 ratio
0.99.
Biochemical properties
Virions contain 3.8-4.45-5 %
nucleic acid; 95-95.5-96 % protein; 0 % lipid.
Genome consists of RNA (3/3); single-stranded (3/3); linear (2/2). Total
genome size 9-11.62-15.6 kb. Genome of three parts (2/3), or of four parts
(1/3); largest (or only) genome part 3.8-4.1-4.5 kb; the 2nd largest
3.289-3.529-4 kb; the 3rd largest 3-3.254-3.6 kb; the 4th largest 3.5 kb. Base
composition 20.3-21.9-23.5 % G; 27-28.95-30.9 % A; 19.4-20.45-21.5 % C;
28-28.7-29.4 % U. 5´ terminus of RNA has a methylated nucleotide cap (1/1).
Poly A region present (1/1). Genome has tRNA-like activity (1/1).
Features of the genome
Non-genomic nucleic acid
found in the virions (1/1); is tRNA (1/1).
Features of proteins
Virion protein(s) one (3/3);
Mr 21500-22500-23000. Virion proteins glycosylated (1/1).
Virus-coded non-virion proteins identified by genomic sequence
analysis (1/1); three proteins found (1/1). Mr 58080. Mr of
2nd largest 17370. Mr of 3rd 14110.
Replication
Replication does not depend on a helper virus
(2/2).
Cytopathology
Virions found in cytoplasm (2/2), or in
nuclei (1/2). Inclusions absent from infected cells (1/1).
Taxonomy and relationships
No data available.
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: 20th August 1996.' 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
