Effects of Single and Double Infections of Winter Wheat by <i>Triticum mosaic virus</i> and <i>Wheat streak mosaic virus</i> on Yield Determinants

Byamukama, Emmanuel; Satyanarayana, T.; Hein, Gary L.; Graybosch, Robert A.; Baenziger, P. Stephen; French, Ron; Wegulo, Stephen N.

doi:10.1094/pdis-11-11-0957-re

Cited by 34 publications

(25 citation statements)

References 34 publications

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“…Tatineni et al (26) demonstrated increased symptom severity and titer of each virus when winter wheat was co-infected with TriMV and WSMV. Similarly, Byamukama et al (2) and Wegulo et al (28) showed that, under greenhouse and field conditions, coinfection of a WSMV-susceptible winter wheat cultivar with TriMV and WSMV significantly reduced yield and yield determinants and components compared with single infections.…”

Section: Discussionmentioning

confidence: 86%

“…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). Therefore, knowing the extent of the distribution of TriMV and the frequency of its co-infection of wheat with WSMV or HPV will assist in estimating the potential risk TriMV poses to wheat production.…”

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confidence: 99%

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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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Section: Discussionmentioning

confidence: 86%

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confidence: 99%

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

et al. 2013

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“…Mace is resistant to WSMV at temperatures below 19°C [53]. Mace’s resistance to WSMV is conditioned by the Wsm -1 gene, which is also found to provide similar levels of resistance to TriMV [8], [52]. Wsm-1 was introduced to wheat from the related perennial grass Thinopyrum intermedium (Host) Barkworth & D.R.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Small RNA Profiles of Virus and Host Origin in Wheat Cultivars Synergistically Infected by Wheat Streak Mosaic Virus and Triticum Mosaic Virus: Virus Infection Caused a Drastic Shift in the Endogenous Small RNA Profile

et al. 2014

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Co-infection of wheat (Triticum aestivum L.) by Wheat streak mosaic virus (WSMV, a Tritimovirus) and Triticum mosaic virus (TriMV, a Poacevirus) of the family Potyviridae causes synergistic interaction. In this study, the effects of the synergistic interaction between WSMV and TriMV on endogenous and virus-derived small interfering RNAs (vsiRNAs) were examined in susceptible (‘Arapahoe’) and temperature-sensitive resistant (‘Mace’) wheat cultivars at 18°C and 27°C. Single and double infections in wheat caused a shift in the profile of endogenous small RNAs from 24 nt being the most predominant in healthy plants to 21 nt in infected wheat. Massive amounts of 21 and 22 nt vsiRNAs accumulated in singly and doubly infected Arapahoe at both temperatures and in Mace at 27°C but not 18°C. The plus- and minus-sense vsiRNAs were distributed throughout the genomic RNAs in Arapahoe at both temperature regimens and in Mace at 27°C, although some regions served as hot-spots, spawning an excessive number of vsiRNAs. The vsiRNA peaks were conserved among cultivars, suggesting that the Dicer-like enzymes in susceptible and resistant cultivars similarly accessed the genomic RNAs of WSMV or TriMV. Accumulation of large amounts of vsiRNAs in doubly infected plants suggests that the silencing suppressor proteins encoded by TriMV and WSMV do not prevent the formation of vsiRNAs; thus, the synergistic effect observed is independent from RNA-silencing mediated vsiRNA biogenesis. The high-resolution map of endogenous and vsiRNAs from WSMV- and/or TriMV-infected wheat cultivars may form a foundation for understanding the virus-host interactions, the effect of synergistic interactions on host defense, and virus resistance mechanisms in wheat.

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“…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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Effects of Single and Double Infections of Winter Wheat by Triticum mosaic virus and Wheat streak mosaic virus on Yield Determinants

Cited by 34 publications

References 34 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

Dynamics of Small RNA Profiles of Virus and Host Origin in Wheat Cultivars Synergistically Infected by Wheat Streak Mosaic Virus and Triticum Mosaic Virus: Virus Infection Caused a Drastic Shift in the Endogenous Small RNA Profile

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

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