Mixed Infection of Hard Red Winter Wheat with High Plains Virus and Wheat Streak Mosaic Virus from Wheat Curl Mites in Nebraska

Mahmood, Tariq; Hein, Gary L.; Jensen, S. G.

doi:10.1094/pdis.1998.82.3.311

Cited by 42 publications

(29 citation statements)

References 12 publications

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“…WSMV and HPV, the two viruses known to be transmitted by WCMs before TriMV's discovery, are widespread in the Great Plains (8,16). Recent studies have shown that co-infection of wheat with WSMV and TriMV results in synergism that increases symptom severity, elevates titers of both viruses (26), and exacerbates biomass and yield loss (2,28).…”

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

et al. 2013

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“…HPV was identiÞed from wheat and corn throughout the Great Plains in the mid-1990s Lane 1994, Jensen et al 1996), and TriMV was recently identiÞed from wheat in Kansas (Seifers et al 2008). Because the wheat curl mite transmits all of these viruses, they are often found together in mixed infections in the Þeld (Mahmood et al 1998, Seifers et al 2008. The extent of the interaction of the viruses is not known; however, it is clear that where one or more viruses are present, the resulting disease complex signiÞcantly impacts wheat (Tatineni et al 2010, Byamukama et al 2012.…”

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Genetic Characterization of North American Populations of the Wheat Curl Mite and Dry Bulb Mite

et al. 2012

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The wheat curl mite, Aceria tosichella Keifer, transmits at least three harmful viruses, wheat streak mosaic virus (WSMV), high plains virus (HPV), and Triticum mosaic virus (TriMV) to wheat (Triticum aestivum L.) throughout the Great Plains. This virus complex is considered to be the most serious disease of winter wheat in the western Great Plains. One component of managing this disease has been developing mite resistance in wheat; however, identification of mite biotypes has complicated deployment and stability of resistance. This biotypic variability in mites and differential virus transmission by different mite populations underscores the need to better understand mite identity. However, A. tosichella has a history of serious taxonomic confusion, especially as it relates to A. tulipae Keifer, the dry bulb mite. Molecular techniques were used to genetically characterize multiple A. tosichella populations and compare them to populations of A. tulipae. DNA from these populations was polymerase chain reaction amplified and the ribosomal ITS2 region sequenced and compared. These results indicated limited variability between these two species, but two distinct types within A. tosichella were found that corresponded to previous work with Australian mite populations. Further work using sequencing of several mitochondrial DNA genes also demonstrated two distinct types of A. tosichella populations. Furthermore, the separation between these two A. tosichella types is comparable to their separation with A. tulipae, suggesting that species scale differences exist between these two types ofA. tosichella. These genetic differences correspond to important biological differences between the types (e.g., biotypic and virus transmission differences). In light of these differences, it is important that future studies on biological response differences account for these mite differences.

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“…Symptoms caused by WSMV infection can be confused with chlorotic symptoms caused by nutritional deficiencies and certain pest infestations (Shahwan and Hill 1984). Moreover, WSMV infection may occur in combination with other wheat viruses such as BYDV, the High Plains virus, or Agropyron mosaic virus (Montana et al 1994;Mahmood et al 1998). This might confuse the detection of WSM symptoms both in the greenhouse and the field.…”

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confidence: 99%

“…Nevertheless, the symptoms caused by WSMV can be indistinguishable from chlorosis arising from nutritional deficiency, other viral pathogens and certain pest infestations (Shahwan and Hill 1984;Montana et al 1994;Mahmood et al 1998). Moreover, narrow and dark pigmented leaves often appear in seedlings of wild relatives of wheat as well as their amphiploids, making it difficult to visually assess WSM symptoms (Stoddard et al 1987b).…”

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confidence: 99%

Promising genetic resources for resistance to wheat streak mosaic virus and the wheat curl mite in wheat-Thinopyrum partial amphiploids and their derivatives

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et al. 2005

Genet Resour Crop Evol

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Wheat streak mosaic virus (WSMV), vectored by the wheat curl mite (WCM), Aceria tosichella Keifer, is one of the most destructive viral diseases of wheat found in many wheat producing areas of the world. Host resistance is the most effective method for controlling this disease and its vector. Symptomatological analysis and enzymelinked immunosorbent assay (ELISA) were used to characterize WSMV-resistance in wheat-alien partial amphiploid lines and their derivatives. The results showed that most of partial amphiploids derived from Thinopyrum ponticum and Th. intermedium were free of systemic symptoms with very low ELISA readings that were similar to that of the non-inoculated Chinese Spring control. While the partial amphiploid lines 693 and PWM706 were identified as new genetic resources of resistance to WSMV. The present study demonstrated that both symptomatological and ELISA methods efficiently assessed WSMV-resistance in the wheat-alien hybrids and systemic symptom incidence and ELISA absorbance readings were highly correlated (r 2 ¼ 0.8658-0.9323) over time following inoculation. The ELISA results also indicated that the virus did not buildup in the plant tissues of these virus-resistant partial amphiploids. Similar results were observed in chromosome translocation and substitution lines that have the gene Wsm1 conferring WSMV resistance. However, the lines containing the gene Wsm1 and all the partial amphiploid lines, except Agrotana, were susceptible to the WCM. One line derived from a cross of wheat and Agrotana, was effective in controlling the spread of WSMV and was highly resistant to the WCM. Another line and an accession of Triticum dicoccoides (Koern.) Schweinf. were highly susceptible to WSMV and WCM. Early disease development was delayed in a new hard red winter cultivar McClintock. The partial WSMV-resistance of McClintock was demonstrated by initially low ELISA readings, and a lower percentage of infected plants than other WSMV-susceptible wheat. The use of the identified promising sources of resistance to WSMV and the WCM in wheat breeding is discussed.

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Mixed Infection of Hard Red Winter Wheat with High Plains Virus and Wheat Streak Mosaic Virus from Wheat Curl Mites in Nebraska

Cited by 42 publications

References 12 publications

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

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

Genetic Characterization of North American Populations of the Wheat Curl Mite and Dry Bulb Mite

Promising genetic resources for resistance to wheat streak mosaic virus and the wheat curl mite in wheat-Thinopyrum partial amphiploids and their derivatives

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