Summary of the Known Host Range of the Wheat Streak-Mosaic Virus

Sill, W. H.; Connin, R. V.

doi:10.2307/3625622

Cited by 23 publications

(8 citation statements)

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“…tices. Contrary to previous results (12,28,31), this study indicated that, in winter wheat, fall inoculation with WSMV does not necessarily result in higher infection rates or yield impacts when compared with spring inoculation. Instead, spring inoculation was associated with an up to 10-fold increase in infection rates, and was more likely to affect yields and grain quality than fall inoculation.…”

Section: Discussioncontrasting

confidence: 85%

“…Evidence suggests that, similar to other cereal viruses (5,21), wheat resistance and tolerance to WSMV increase with plant age (i.e., growth stage). In a greenhouse experiment, symptoms and damage were severe when wheat was inoculated prior to tillering but were less frequent and relatively mild when wheat was inoculated later (28). In winter wheat grown in the central and southern Great Plains, impacts of fall exposure are severe whereas the effects of spring exposure are relatively mild (12,27).…”

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confidence: 97%

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Impacts of Crop Variety and Time of Inoculation on the Susceptibility and Tolerance of Winter Wheat to Wheat streak mosaic virus

Miller¹,

Menalled²,

Ito

et al. 2014

Plant Disease

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Miller, Z., Menalled, F., Ito, D., Moffet, M., and Burrows, M. 2014. Impacts of crop variety and time of inoculation on the susceptibility and tolerance of winter wheat to Wheat streak mosaic virus. Plant Dis. 98:1060-1065.Plant genotype, age, size, and environmental factors can modify susceptibility and tolerance to disease. Understanding the individual and combined impacts of these factors is needed to define improved disease management strategies. In the case of Wheat streak mosaic virus (WSMV) in winter wheat, yield losses and plant susceptibility have been found to be greatest when the crop is exposed to the virus in the fall in the central and southern Great Plains. However, the seasonal dynamics of disease risk may be different in the northern Great Plains, a region characterized by a relatively cooler fall conditions, because temperature is known to modify plant-virus interactions. In a 2-year field study conducted in south-central Montana, we compared the impact of fall and spring WSMV inoculations on the susceptibility, tolerance, yield, and grain quality of 10 winter wheat varieties. Contrary to previous studies, resistance and yields were lower in the spring than in the fall inoculation. In all, 5 to 7% of fall-inoculated wheat plants were infected with WSMV and yields were often similar to uninoculated controls. Spring inoculation resulted in 45 to 57% infection and yields that were 15 to 32% lower than controls. Although all varieties were similarly susceptible to WSMV, variations in tolerance (i.e., yield losses following exposure to the virus) were observed. These results support observations that disease risk and impacts differ across the Great Plains. Possible mechanisms include variation in climate and in the genetic composition of winter wheat and WSMV across the region.

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Section: Discussioncontrasting

confidence: 85%

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confidence: 97%

Impacts of Crop Variety and Time of Inoculation on the Susceptibility and Tolerance of Winter Wheat to Wheat streak mosaic virus

Miller¹,

Menalled²,

Ito

et al. 2014

Plant Disease

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“…Jointed goatgrass is a known host for WSMV (22) and was shown to be susceptible to TriMV in an experimental host range study (18). In this study, TriMV occurrence in jointed goatgrass was a result of natural infection, indicating that this grass species can be a reservoir of TriMV in addition to WSMV.…”

Section: Discussionmentioning

confidence: 77%

Occurrence and Distribution of Triticum mosaic virus in the Central Great Plains

et al. 2013

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Wheat curl mite (WCM)-transmitted viruses—namely, Wheat streak mosaic virus (WSMV), Triticum mosaic virus (TriMV), and the High Plains virus (HPV)—are three of the wheat-infecting viruses in the central Great Plains of the United States. TriMV is newly discovered and its prevalence and incidence are largely unknown. Field surveys were carried out in Colorado, Kansas, Nebraska, and South Dakota in spring and fall 2010 and 2011 to determine TriMV prevalence and incidence and the frequency of TriMV co-infection with WSMV or HPV in winter wheat. WSMV was the most prevalent and was detected in 83% of 185 season–counties (= s-counties), 73% of 420 season–fields (= s-fields), and 35% of 12,973 samples. TriMV was detected in 32, 6, and 6% of s-counties, s-fields, and samples, respectively. HPV was detected in 34, 15, and 4% of s-counties, s-fields, and samples, respectively. TriMV was detected in all four states. In all, 91% of TriMV-positive samples were co-infected with WSMV, whereas WSMV and HPV were mainly detected as single infections. The results from this study indicate that TriMV occurs in winter wheat predominantly as a double infection with WSMV, which will complicate breeding for resistance to WCM-transmitted viruses.

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“…However, it is unclear what the source of infection in that study was and whether the plant community could be a significant source of viral inocu!um to the crop. It is !ike!y that the importance of grass species as a source of WSMV and the WCM vades according to geographic region (44) and cropping practices. From the resu!ts of our study, we conc!ude that, at !east in the northem Great P!ains, winter annua!…”

Section: Host Speciesmentioning

confidence: 99%

Relative Susceptibility Among Alternative Host Species Prevalent in the Great Plains to Wheat streak mosaic virus

Ito

Miller

Menalled³

et al. 2012

Plant Disease

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Ito, D., IVIiller, Z., Menaüed, F., Moffet, M., and Burrows, M. 2012. Re!ative susceptibiüty among a!temative host species preva!ent in the Great P!ains to Wheat streak mosaic virus. Plant Dis. 96:1185-1192.Wild grasses, crops, and grassy weeds are known to host Wheat streak mosaic virus (WSMV) and its vector, the wheat cur! mite (WCM). Their relative importance as a source of WSMV was evaluated. A survey of smaü-grain fie!ds throughout Montana was conducted between 2008 and 2009. Cheatgrass was the most preva!ent grassy weed and the most frequent vira! host, with 6% infection by WSMV in 2008 {n = 125) and 15% in 2009 {n = 358). By mechanically inoculating plants with WSMV in the greenhouse, the highest susceptibiüty was found in rye brome (52.1%), jointed goatgrass (80.9%), and wi!d oat (53.9%). Quackgrass, not previous!y reported as a host, was susceptib!e to WSMV (12.7%). Mite transmission efficiency from susceptib!e grass species was lower than from wheat, and grass species must be a host for both WSMV and the WCM to serve as a virus source. WCM transmission was more efficient than mechanical transmission. Overall, results indicate that grass species can serve as a viral reservoir, regional variation in a weed species' susceptibiüty to WSMV cannot exp!ain geographic variation in epidemic intensity, and crop species and c!ose!y re!ated weeds (e.g., jointed goatgrass) remain the best reservoirs for both WSMV and the WCM.

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Summary of the Known Host Range of the Wheat Streak-Mosaic Virus

Cited by 23 publications

References 0 publications

Impacts of Crop Variety and Time of Inoculation on the Susceptibility and Tolerance of Winter Wheat to Wheat streak mosaic virus

Impacts of Crop Variety and Time of Inoculation on the Susceptibility and Tolerance of Winter Wheat to Wheat streak mosaic virus

Occurrence and Distribution of Triticum mosaic virus in the Central Great Plains

Relative Susceptibility Among Alternative Host Species Prevalent in the Great Plains to Wheat streak mosaic virus

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