European Journal of Plant Pathology (2017) 149, 743-750

Vanina Alemandri, María Fernanda Mattio, Sandra Mónica Rodriguez and Graciela Truol (2017)
Geographical distribution and first molecular detection of an Emaravirus, High Plains wheat mosaic virus, in Argentina
European Journal of Plant Pathology 149 (3), 743-750
Abstract: High Plains wheat mosaic virus (HPWMoV) has recently been assigned to genus Emaravirus and is the causal agent of High Plains disease. In this work the geographical distribution and first molecular detection of HPWMoV in Argentina are reported. The virus was detected in six provinces and nine hosts, including wheat, corn, oat and barley, as well as weeds, which play an important role in the epidemiology of this disease. Molecular and phylogenetic analyses of a portion of RNA3 nucleoprotein gene sequence showed that five HPWMoV isolates from different wheat growing regions of Argentina were identical, and suggest a single introduction of HPWMoV to this country, possibly through corn seeds. To the best of our knowledge, this is the first molecular detection of HPWMoV in South America. These results highlight the importance of certification of viruses-free cereal seeds and strict controls for material transfer between different countries to prevent the entry not only of new pathogens but also of new variants or strain at sites where the pest has already been detected.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Emaravirus tritici	Barley (Hordeum vulgare)	Argentina
	Emaravirus tritici	Maize/corn (Zea mays)	Argentina
	Emaravirus tritici	Oat (Avena sativa)	Argentina
	Emaravirus tritici	Wheat (Triticum)	Argentina