First report of High Plains wheat mosaic virus on different hosts in Ukraine

Snihur, Halyna; Pozhylov, Illia; Budzanivska, I. G.; Shevchenko, Oleksiy

doi:10.1007/s42161-019-00435-y

Cited by 14 publications

(17 citation statements)

References 4 publications

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“…However, HPWMoV was not identified in the remaining screened regions where WSMV was abundant. This is in agreement with our previous report on HPWMoV occurrence in Ukraine [35].…”

Section: Occurrence Of Wsmv and Hpwmovsupporting

confidence: 94%

“…Historically, WSMV was mainly spread in the eastern part of Ukraine, but available data suggest that WSMV may now be considered the most prevalent cereal virus in Ukraine, having 'replaced' barley yellow dwarf virus, which was dominant back in the 1990s [33,34]. In addition, recently, we have also confirmed the circulation of HPWMoV in cereal crops in several eastern regions of Ukraine, which was the first report of this pathogen detected in Europe [35]. As WSMV can possibly co-infect wheat plants in combination with HPWMoV and other virus(es) inducing similar symptoms, here we identified and evaluated the spread of WSMV in agriecosystems of Ukraine to establish patterns of its circulation in winter wheat (mono-and/or mixed infection), the geographical spread of the pathogen(s), wheat cultivar susceptibility, as well as phylogenetic properties of identified virus isolates found in mono-or mixed infection.…”

Section: Introductionsupporting

confidence: 62%

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Occurrence and Characterization of Wheat Streak Mosaic Virus Found in Mono- and Mixed Infection with High Plains Wheat Mosaic Virus in Winter Wheat in Ukraine

Pozhylov

Snihur

Shevchenko

et al. 2022

Viruses

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Although wheat streak mosaic virus (WSMV) is a well-known pathogen inducing significant crop losses and endangering wheat production worldwide, the recent discovery of High Plains wheat mosaic virus (HPWMoV) in Ukraine raises questions on the co-existence of these two viruses having a similar host range and the same mite vector. Here we report on the screening of winter wheat industrial plantings in several important regions of Ukraine for WSMV and HPWMoV. WSMV was identified in an extremely high number of symptomatic plants (>85%) as compared to HPWMoV detected in 40% of wheat samples. Importantly, the preferred mode of HPWMoV circulation in Ukraine was mixed infection with WSMV (>30%) as opposed to WSMV, which was typically found in monoinfection (60%). Screening wheat varieties for possible virus resistance indicated that all but one were susceptible to WSMV, whereas over 50% of the same varieties were not naturally infected with HPWMoV. Overall, phylogenetic analysis of the collected WSMV and HPWMoV isolates indicated their high identity and similarity to other known isolates of the respective viruses. Here we first characterize WSMV isolates found in winter wheat plants in mono- or mixed infection with HPWMoV, which was recently reported as a typical wheat pathogen in Ukraine.

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“…However, HPWMoV was not identified in the remaining screened regions where WSMV was abundant. This is in agreement with our previous report on HPWMoV occurrence in Ukraine [35].…”

Section: Occurrence Of Wsmv and Hpwmovsupporting

confidence: 94%

Section: Introductionsupporting

confidence: 62%

Occurrence and Characterization of Wheat Streak Mosaic Virus Found in Mono- and Mixed Infection with High Plains Wheat Mosaic Virus in Winter Wheat in Ukraine

Pozhylov

Snihur

Shevchenko

et al. 2022

Viruses

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“…Phytosanitary certificate is required to import grains of genera Triticum L., Secale L. and xTriticale Wittm ex A. Camus from several countries, including the USA in which HPWMoV has been reported to be present (2019/2072, Annex XI, A, 1). Interestingly, the Ukrainian wheat and maize isolates of HPWMoV, recently reported for the first time in Europe, were found in distant geographic regions and showed significant sequence diversity from each other, suggesting possible multiple introductions in this country (Snihur et al, 2020 ), either through seeds for sowing or through viruliferous mites. Possible entry by natural means (i.e.…”

Section: Pest Categorisationmentioning

confidence: 94%

“…HPWMoV was then reported in Australia (Skare et al, 2006 ; Coutts et al, 2014 ) and, in 2017, in Argentina and Canada (Alemandri et al, 2017 ; Abdullahi et al, 2020 ). The recent report of HPWMoV in Ukraine, on wheat from four regions (Dnipropetrovsk, Donetsk, Zaporizhia and Kharkiv) and on maize from another region (Vinnytsia) (Snihur et al, 2020 ), shows that the virus is now present and established also in one European country (Figure 1 ).…”

Section: Pest Categorisationmentioning

confidence: 96%

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Pest categorisation of High Plains wheat mosaic virus

Bragard¹,

Baptista²,

Chatzivassiliou³

et al. 2022

EFS2

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The EFSA Panel on Plant Health conducted a pest categorisation of High Plains wheat mosaic virus (HPWMoV) for the EU territory. The identity of HPWMoV, a member of the genus Emaravirus (family Fimoviridae ), is well established and reliable identification methods are available. The pathogen is not included in the EU Commission Implementing Regulation 2019/2072. HPWMoV has been reported from Argentina, Australia, Canada, Ukraine and USA, and it is not known to be present in the EU. HPWMoV infects plant species of the family Poaceae (i.e. wheat, maize and several other cultivated or wild Poaceae species). It is the causal agent of High Plains disease of wheat and maize, inducing symptoms ranging from mild to severe mosaic, chlorosis and necrosis in wheat, and chlorotic streaks in maize plants. The virus is transmitted by the wheat curl mite Aceria tosichella, which is present in the EU. HPWMoV transmission via seeds was reported to occur in sweet corn. Sweet corn seeds for sowing were identified as the most relevant pathway for entry of HPWMoV into the EU. Seeds from other hosts and viruliferous wheat curl mites were identified as entry pathways associated with uncertainties. Machinery not appropriately cleaned may move infected seeds and/or parts of cereals infested by viruliferous mites. Cultivated and wild hosts of HPWMoV are distributed across the EU. Would the pest enter and establish in the EU territory, economic impact on the production of cultivated hosts is expected. Phytosanitary measures are available to prevent entry and spread of the virus in the EU. HPWMoV fulfils the criteria that are within the remit of EFSA to assess for it to be regarded as a potential Union quarantine pest.

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