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![Symptoms of viral infection on Sambucus nigra plants: a,b -chlorotic foliage symptoms; c -leaf rolling Number of affected plants accounted for over 20% of surveyed wild elderberry. It should be noted that analysis of world scientific literature on elderberry viruses showed that the most common symptom is chlorotic mottling ('blotching') and induced by many viruses [3, 20, 22]. But the chlorotic foliage symptom is not found in any report. Filamentous virions 650±50 × 12 nm were found in the elderberry leaves conducting the transmission electron microscopy method. It was marked higher concentration of virions in plants with leaf rolling symptom compared with chlorotic. In addition, earlier PVM and PVY were identified by us in tomatoes with leaf rolling symptoms for the same agroecological conditions (in Poltava and Kiev regions) [16]. Such morphology is characteristic for viruses from the genus Potyvirus (Potyviridae) and Carlavirus (Betaflexiviri-](profile/Oksana-Taran/publication/324008934/figure/fig1/AS:825147229474816@1573741838437/Symptoms-of-viral-infection-on-Sambucus-nigra-plants-a-b-chlorotic-foliage-symptoms-c.png)
Symptoms of viral infection on Sambucus nigra plants: a,b -chlorotic foliage symptoms; c -leaf rolling Number of affected plants accounted for over 20% of surveyed wild elderberry. It should be noted that analysis of world scientific literature on elderberry viruses showed that the most common symptom is chlorotic mottling ('blotching') and induced by many viruses [3, 20, 22]. But the chlorotic foliage symptom is not found in any report. Filamentous virions 650±50 × 12 nm were found in the elderberry leaves conducting the transmission electron microscopy method. It was marked higher concentration of virions in plants with leaf rolling symptom compared with chlorotic. In addition, earlier PVM and PVY were identified by us in tomatoes with leaf rolling symptoms for the same agroecological conditions (in Poltava and Kiev regions) [16]. Such morphology is characteristic for viruses from the genus Potyvirus (Potyviridae) and Carlavirus (Betaflexiviri-
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For the first time viral disease of elderberry (Sambucus nigra L.) was detected in Ukraine. Symptomatology of the disease and morphological properties of the virus are studied. Based on scientific literature data, screening of viruses that can infect elderberry plants in Ukraine is conducted. Antigens of PVY, PVM, SMV, AMV, and BYMV in elderberry p...
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... and discussion. Under observations of wild elderberry plants in Poltava (2015Poltava ( -2016 and Kyiv (2016) regions we detected plants with chlorotic symptoms (a, b) and rolling of leaf tops (c) and twisting up the edges of the leaves (Fig.1). It should be noted that analysis of world scientific literature on elderberry viruses showed that the most common symptom is chlorotic mottling ('blotching') and induced by many viruses [3,20,22]. ...
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... Under observations of wild elderberry plants in Poltava (2015Poltava ( -2016 and Kyiv (2016) regions we detected plants with chlorotic symptoms, mosaic and ringspotting ( Figure 1). As well, plants rolling of leaf tops and twisting up the edges of the leaves were identified (Mishchenko et al., 2016). ...
For the first time in Ukraine, a virus disease of elderberry (Sambucus nigra L.) was found. Plants with symptoms of a viral infection were found in 2015–2016 in the Poltava region, in 2016 the same symptoms on elder plants were disfigured in the Kiev region. The symptoms of the disease and the morphological properties of the virus were studied. We found plants with chlorotic symptoms, mosaic and chain mail, plants rolling on the tops of leaves, and twisting the edges. In the leaves of infected plants, filamentous virions with a particle length of 650 ±50 nm were detected by the method of electron microscopy. Based on the scientific literature data, viruses that can infect elder plants in Ukraine are screened. The levels of lipid peroxidation in older plants under conditions of viral infection and heat stress were studied. It is shown that a viral infection significantly reduces the content of TBA-active products in elder plants. The content of malonic dialdehyde significantly increased under conditions of heat stress in plants with symptoms of viral infection. At the same time, the content of TBA-active products in the leaves of healthy plants was insignificant. This indicates a negative effect of viral infection on the antioxidant system of elder plants. Further studies are needed to establish the systematic position of the detected viral particles and to create diagnosticums for the detection of these viruses. It is also necessary to study the ecological links of viruses identified in elderberry
