Descriptions and Lists from
the VIDE Database
Data collated by M.J. Adams, 1990.
barley yellow mosaic virus mechanically
transmissible strain, BaYMV - Streatley strain.
two serotypes have been reported from Japan.
ICTV decimal code
Host range and symptoms First reported
in Hordeum vulgare; from Germany; by Huth et al. (1984).
Natural host range and symptoms
Symptoms vary seasonally
(in winter or early spring only). Symptoms yellow streaks, brown necrosis.
- Hordeum vulgare - yellow streaks, especially in younger
leaves and sometimes in leaf sheath, also brown necrotic patches. Leaves may
roll making the plant look `spiky'.
Transmitted by a vector; a fungus;
Polymyxa graminis (Mastigomycotina); Plasmodiophorales. Principal natural
vector(s): Polymyxa graminis. Virus transmitted by mechanical
inoculation; not transmitted by contact between plants; not transmitted by seed;
not transmitted by pollen.
Ecology and control
reported by Huth (1989).
Belgium, France, Germany, Italy, Japan, the Netherlands, and the UK.
Experimental host range
Few (<3) families susceptible.
Experimentally infected plants mostly show yellow streaks.
Diagnostically susceptible host species and symptoms
- Hordeum vulgare, Lagurus ovatus, Eremopyrum hirsutum, Aegilops kotschyi,
A. searsii, A. speltoides - systemic leaf streaking.
Diagnostically insusceptible host species
Oryza sativa, Secale cereale, Triticum aestivum, Zea mays.
Maintenance and propagation hosts
(but some cultivars are immune).
Assay hosts (Local lesions or Whole plants)
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Sources of host-range data
Properties of particles in sap
log10 minus 4. Leaf sap contains few virions.
al. (1984); Adams et al. (1987); Pröls et al. (1990).
Virions filamentous; not enveloped;
slightly usually flexuous; with clear modal lengths (two); of 270-290 nm, or
570-600 nm; 12 nm wide (PTA), or 15 nm wide (UA). Axial canal obscure. Basic
Density 1.314 g cm-3 in CsCl.
Genome consists of RNA;
single-stranded; linear. Total genome size c. 12 kb. Genome of two
parts; largest (or only) genome part the larger 8 kb (approximately); the 2nd
largest c. 4 kb. Genomic nucleic acid isolated by Batista et al.
(1989). Infectivity retained when deproteinised with phenol or detergent. Poly A
region present; found at the 3´ end of both genome segments. Additional
factor not required for infectivity.
Sequence database accession code(s)
Em(40)_vi:BMMNA1 Gb(84)_vi:BMMNA1 Barley mild mosaic virus RNA 1, polyprotein
precursor, partial sequence. 1/93 3,464bp.
- D10949 Em(40)_vi:BMMKA1
Gb(84)_vi:BMMKA1 Barley mild mosaic virus RNA 1, polyprotein precursor, partial
sequence. 1/93 3,946bp.
- X69204 Em(40)_vi:BMPOLYPRO Gb(84)_vi:BMPOLYPRO
Barley Mild Mosaic Virus sequence for polyprotein, 3´ terminus. 11/92 2,095bp
- X74095 Em(40)_vi:BAMMVRNA1 Gb(84)_vi:BAMMVRNA1 Barley mild mosaic virus
(BaMMV) RNA-1 (3´ region) ORF for coat protein. 8/93 1,476bp
Em(43)_vi:Bammvrna2 Gb(89)_vi:Bammvrna2 Barley mild mosaic virus complete
sequence of RNA2. 11/94 3,524bp.
- X82625 Em(43)_vi:Bmmvp1p2
Gb(89)_vi:Bmmvp1p2 Barley mild mosaic virus mRNA for RNA2 polyprotein. 4/95
- X84802 Em(44)n:Bmmvrna2a Barley mild mosaic virus RNA 2 complete
sequence. 7/95 2,428bp.
Features of the genome
Non-genomic nucleic acid
not found in the virions.
Features of proteins
Virion protein(s) one;
Mr 35000. Method of preparation: Huth et al. (1984); Ehlers and
Virus-coded non-virion proteins isolated (Ehlers (1987)); one protein
found. Mr 72000; possibly pinwheel inclusion protein.
Replication does not depend on a helper
Virions found in leaves, roots, mesophyll,
epidermis, vascular parenchyma and the companion cells; in cytoplasm. Inclusions
present in infected cells; are membranous bodies and pinwheels; they do not
contain virions (but virions may be attached to pinwheels).
Virus(es) with serologically unrelated virions
Barley yellow mosaic, wheat spindle streak mosaic (syn. wheat yellow
mosaic) and oat mosaic viruses.
Additional comments on relationships
The virus was reported to have virions serologically related to those
of bean yellow mosaic potyvirus and those of one isolate of turnip mosaic
potyvirus (Stanarius et al., 1989) but was not confirmed by Chen and
Best tests for diagnosis
Longitudinal streaks on unfurling leaves in winter or early spring distinguish
this from barley yellow dwarf luteovirus. Serological tests or sequencing are
necessary to distinguish it from barley yellow mosaic bymovirus.
- Adams, M.J. (1991).
Pl. Path. 40: 53.
- Adams, M.J., Jones, P. and Swaby, A.G.
(1987). Ann. appl. Biol. 110: 321.
- Batista, M.F., Antoniw,
J.F., Swaby, A.G., Jones, P. and Adams, M.J. (1989). Pl. Path. 38:
- Chen, J. and Adams, M.J. (1991). Pl. Path. 40: 226.
- Ehlers, V. (1987). Ph.D. Thesis, Technischen Universitat
Carlo-Wilhelmina, Braunschweig, Germany.
- Huth, W. (1988). In: Viruses
with Fungal Vectors, p. 61; eds J.I. Cooper and M.J.C. Asher. Association of
Applied Biologists, Wellesbourne, U.K.
- Huth, W. (1989). EPPO Bulletin
- Huth, W. and Adams, M.J. (1990). Intervirology
- Huth, W., Lesemann, D.-E. and Paul, H.L. (1984).
Phytopath. Z. 111: 37.
- Proeseler, G. (1988). Arch.
Phytopath. Pflanzen. 24: 267.
- Pröls, M., Davidson, A.,
Schell, J. and Steinbiss, H.-H. (1990). J. Phytopath. 130: 249.
- Stanarius, A., Proeseler, G. and Richter, J. (1989). Arch. Phytopath.
Pflanzen. 25: 303.
Cite this publication as:
Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.)
`Plant Viruses Online: Descriptions and Lists from the VIDE Database.
Version: 16th January 1997.' URL
Dallwitz, Paine and Zurcher (1993)
should also be cited.
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