Host of virus belongs to the Domain Eucarya. Host of virus belongs to the Kingdom Plantae.
| Natural Host Range and Symptoms
|
Echinochloa crus-galli, Paspalum thumbergii, Oryza sativa, Alopecurus aequalis
- stunting, white chlorotic specks on leaves. |
| Experimental Host Range and
Symptoms |
Few (<3) families susceptible.
Experimentally infected plants mostly show symptoms of stunting, white
specks on leaves, darker leaf colour. |
| Diagnostic, Propagational
and Assay Host Range |
Diagnostic host: susceptible host
species and symptoms
Alopecurus japonicus, A aequalis, Avena sativa, Echinochloa
crus-galli, Hordeum sativum, Oryza cubensis, O. sativa, Panicum
miliaceum, Poa annua, Secale cereale, Triticum aestivum -
stunting and systemic chlorotic specks.
Diagnostic host: insusceptible host species Andropogon sorghum,
Setaria italica, Zea mays.
Maintenance and propagation host species: Alopecurus japonicus,
Oryza sativa.
Assay hosts (Local lesions or Whole plants) Oryza sativa (W).
|
| Susceptible Hosts |
Experimentally infected species
susceptible to virus: Alopecurus aequalis, or Alopecurus
japonicus, or Avena sativa, or Echinochloa crus-galli,
or Hordeum sativum, or Hordeum vulgare, or
Oryza cubensis, or Oryza sativa, or Panicum miliaceum,
or Paspalum thumbergii, or Poa annua, or
Secale cereale, or Triticum aestivum. |
| Insusceptible Hosts |
Species inoculated with virus, but tested
not to be susceptible: Andropogon sorghum, or Setaria
italica, or Zea mays.
Families containing susceptible hosts: Gramineae (13/16).
Families containing insusceptible hosts: Gramineae (3/16).
Sources of host-range data: Fukushi (1934); Shinkai (1962).
|
| Transmission |
Transmitted by a vector. Virus not
transmitted by mechanical inoculation; not transmitted by contact
between plants; not transmitted by seed; not transmitted by
pollen. Transmitted by an insect; Nephotettix cincticeps,
N. apicalis, N. nigropictus, N. virescens, Recilia dorsalis;
Cicadellidae. Principal natural vector(s): Nephotettix
cincticeps. Transmitted in a persistent manner. Virus retained
when the vector moults; multiplies in the vector; transmitted
congenitally to the progeny of the vector. |
| Geographic Distribution |
Spreads in China, Japan, Korea D.P.R.
(North), Korea Republic, and Nepal. |
| Ecology and Control |
Studies reported by Miyai et al. (1986).
|
| Diagnostic and Methods |
Leaf sap contains many
virions. Method: Iida et al. (1972). |
