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Wheat dwarf virus in Ukraine: occurrence, molecular characterization and impact on the yield

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Abstract

Wheat dwarf virus (WDV) causes one of the most serious cereal diseases in many countries. In spring 2020, we observed wheat plants with symptoms of severe dwarfism, no heading/reduced heading, leaf streaking and yellowing in five regions located in western, central and northern parts of Ukraine. The aim of the study was to identify the virus causing mentioned symptoms, investigate its impact on wheat yield and perform phylogenetic analysis of the detected viral isolates. Using double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) and polymerase chain reaction, WDV was confirmed in 14 varieties of winter and spring wheat. CP gene regions of two WDV isolates were sequenced: Khm-K-Ukr, MW176036 (from winter wheat var. Kolonia, Khmelnytskyi region) and MIP-12-Ukr, MW176037 (winter wheat D-12-1, Kyiv region). Phylogenetic analysis showed that Khm-K-Ukr and MIP-12-Ukr belong to the clade E. These isolates have the highest level of sequence identity with the barley isolate WDV-Lip from Poland (KY781940), the Ukrainian wheat isolate WDV-Uk-Miron (FN806784) and the isolate from Estonia (MK193742) and clustered on the same branch indicating their possible common origin. The isolate MIP-12-Ukr has 1 unique aa substitution and Khm-K-Ukr has 4 aa mutations in the studied CP gene region in comparison with other 52 WDVs from GenBank. It was found that WDV significantly reduced the number of seeds per spike 2.6–3.4 -fold, the weight of seeds per spike (3.8–4.2-fold), while weight of 1000 grains was also decreased (by 2.6–3.5 times). These results indicate that WDV is a big threat to wheat crops in Ukraine.

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Availability of data and materials

All data generated or analyzed during this study are included in this published article (and its additional files). The Khm-K-Ukr and MIP-12-Ukr sequences have been deposited in the NCBI GenBank [accession numbers MW176036 and MW176037] and have not been released to the public database yet but are available from the corresponding author on reasonable request.

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Acknowledgements

The authors acknowledge Oleg Skufinskyi of the "Agrotorg-Podillya" for providing samples of diseased wheat and significant interest in the work.

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LM designed the study; LM, AD, AD, OM and IM prepared material for the experiments and collected data; LM, AD, AD and TK conducted the experiments; AD wrote the manuscript. All authors analyzed all data, drafted the figures, commented, reviewed and approved the final manuscript.

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Correspondence to Lidiya T. Mishchenko.

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Mishchenko, L.T., Dunich, A.A., Mishchenko, I.A. et al. Wheat dwarf virus in Ukraine: occurrence, molecular characterization and impact on the yield. J Plant Dis Prot 129, 107–116 (2022). https://doi.org/10.1007/s41348-021-00552-w

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  • DOI: https://doi.org/10.1007/s41348-021-00552-w

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