Wheat streak mosaic virus
wheat streak
Wheat streak mosaic potyvirus
Worldwide
Widespread in wheat regions
2023-08-25
virus
China, Korea, Chile
Primarily a virus of wheat. Other grasses and grains, such as oats, rye, barley, and millet may act as reservoirs for the virus. Not common in maize, though it has been reported in some cultivars.
WSMV00
The wheat curl mite (Aceria tosichella,K.), is the only known vector for Wheat streak mosaic virus. When symptoms are present, confirm the causal agent with laboratory diagnoses. Symptoms of this disease may be similar to other viral diseases or inconspicuous under unfavorable climatic conditions or plant physiological stress, requiring thorough laboratory analysis. Latency resulting in asymptotic plants, though documented (WSMV00-4), is not common. Expression may vary with climatic conditions, plant genetics, physiological stress, and plant pathogen strain. Literature showing that random sampling of apparently healthy plants to detect latent populations of this pathogen has not been found.
6 Known Hosts
Avena sativa
oat
No
This crop may act as reservoirs for the mite vector and virus. No references found indicating seed is a pathway
Hordeum vulgare
barley
No
This crop may act as reservoirs for the mite vector and virus. No references found indicating seed is a pathway.
Panicum miliaceum
millet
No
WSMV00-6
This crop may act as a reservoir for the mite vector and virus. No references were found indicating seed is a pathway.
Pasztor, Gyorgy & Nagyne Dr. Galbacs, Zsuzsanna & Kossuth, Tamas & Demian, Emese & Nadasyne Iharosi, Erzsebet & Takacs, Andras & Varallyay, Eva. (2020). Millet Could Be Both a Weed and Serve as a Virus Reservoir in Crop Fields. Plants. 9. 954. 10.3390/plants9080954.
Secale cereale
rye
No
This crop may act as a reservoir for the mite vectors and virus. No references were found indicating seed is a pathway.
Triticum aestivum
wheat
Yes
WSMV00-2
Seed transmission by this virus is documented and accepted. The virus is transmitted at low levels.
Yes
ELISA and PCR tests
These tests were used in research and have not been validated or standardized.
WSMV00-2
Resistant varieites are available.
Jones RAC, Coutts BA, Mackie AE, Dwyer GI, 2005. Seed transmission of Wheat streak mosaic virus shown unequivocally in wheat. Plant Disease, 89:1048-1050.
Zea mays
corn
No
WSMV00-4
Pathway not proven. This reference is the only one found with evidence of seed transmission and it was only found in one corn variety in laboratory experiments. Transmission rates were less than 0.1% and seed was not directly tested for the virus but indirectly by inoculating sap from seedlings to susceptible hosts before testing by ELISA. No literature found indicating natural infections of this virus. Corn is not an important host of the vector and the virus rarely causes damage to corn.
Hill JH, Martinson CA, Russell WA, 1974. Seed transmission of maize dwarf mosaic and wheat streak mosaic viruses in maize and response of inbred lines. Crop Science, 14:232-235.
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