VRVolodymyr Rudas

Volodymyr Rudas

*This is an algorithmically generated author record based on publicly available information.

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Volodymyr Rudas has a total of 27 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Stability of Biologically Active Human Interferon α-2b in Transgenic “Long-Shelf Life” Tomatoes and Their Progeny

    by Volodymyr Rudas, Olga Ovcharenko, Olha Yaroshko, Nadiia Zholobak, Vladyslav Moseiko, Nataliia Shcherbak, Bogdan Morgun, Taras Pasternak, Mykola Kuchuk

    Human interferon α-2b (HuIFNα-2b) is a cytokine with antiviral and antiproliferative activities and is widely used as a therapeutic protein. Here, we investigated the production of biologically active HuIFNα-2b in transgenic tomato plants. Long-shelf-life Solanum lycopersicum L. cv. ‘Shedevr 1’ plants were transformed via an Agrobacterium-mediated protocol using the binary vector pCB124 carrying nptII and HuIFNα-2b genes. PCR and RT-PCR analyses confirmed transgenes presence and expression in regenerated kanamycin-resistant plants. Antiviral activity was evaluated in vitro by the inhibition of vesicular stomatitis virus replication in MA-104 epithelial cells. Interferon activity reached 14.90 × 103 IU g−1 FW in fresh fruit pulp and 854.00 × 103 IU g−1 FW in leaves. Importantly, transgenic fruits retained substantial activity (2.42 × 103–6.72 × 103 IU g−1 FW) after three months of storage, with detectable activity (0.36 × 103 IU g−1 FW) remaining after five months. Transgene inheritance and interferon activity were confirmed in the T1 and T2 generations. These results demonstrate the potential of long-shelf-life transgenic tomatoes as a platform for the production and extended storage of biologically active recombinant proteins, potentially reducing dependence on costly purification and cold storage procedures.

  • Open Access

    Ефективний метод генетичної трансформації картоплі та створення in vitro колекції її сортів з генами, що підвищують стійкість до абіотичних і біотичних стресів

    by O.O. Ovcharenko, В.а. Рудас, N.L. Shcherbak, O.M. Kishchenko, Б.в. Моргун, M.V. Kuchuk

    Сьогодні різноманітні сільськогосподарські види рослин зазнають впливу численних стресових факторів довкілля — засолення, посухи, екстремальних температур, дефіциту або надлишку мінеральних речовин тощо. Картопля (Solanum tuberosum) є важливою продовольчою, кормовою та технічною культурою в Україні й усьому світі. Поліплоїдія культурного Solanum tuberosum є серйозною перешкодою в його селекції. Порівняно з традиційною селекцією генетична інженерія має певні переваги у підвищенні стійкості цієї культури до стресових впливів і дає змогу швидко створювати стійкі рослини на основі наявних комерційних сортів. Стратегії сталого виробництва потребують оптимізації чинних протоколів трансформації картоплі та перенесення генів, що підвищують стійкість до стресів, є актуальними і становлять мету дослідження. Гени двох ізоформ вакуолярного Na+/H+-антипортера з ячменю (HvNHX2 і HvNHX3) сприяють підвищенню стійкості до посухи, засолення та залуженння ґрунту. Короткий антисенсовий сегмент гена проліндегідрогенази (PDH ex1) з Arabidopsis thaliana завдяки частковому пригніченню гена PDH знижує активність цього ферменту, що зумовлює підвищення вмісту проліну і стійкості трансгенних рослин до посухи, холоду, важких металів та засолення. Ген цитохрому P450 з кори наднирників великої рогатої худоби (CYP11A1) підвищує врожайність і стійкість до фітопатогенних грибів. Гени екстраклітинної РНКазицинії (ZRNase) та панкреатичної РНКази бика (bov) підвищують стійкість рослин до вірусних інфекцій. Комерційні сорти картоплі було трансформовано за допомогою Agrobacterium tumefacience з використанням векторів зі згаданими вище генами. Отримана колекція трансгенних ліній картоплі є цінним матеріалом для подальшого дослідження стресостійкості і дає змогу порівняти вплив різних чужорідних генів на основі низки комерційних сортів.

  • Peculiarities of Leaf Epiderma in Orchid Bletilla Striata under Ex Vitro Adaptation

    by Mykola Gaponenko, Alla Gnatiuk, Olena Andrushchenko, Kateryna Lystvan, Olga Ovcharenko, Volodymyr Rudas, Dzhamal Rakhmetov

    Bletilla striata ((Thunberg) H. G. Reichenbach) a member of the Orchidaceae Juss. family is grown in greenhouse culture as an ornamental plant, and it is a

  • Open Access

    Increased ribonuclease activity in Solanum tuberosum L. transformed with heterologous genes of apoplastic ribonucleases as a putative approach for production of virus resistant plants

    by Andrii Potrokhov, Daria Sosnovska, Olga Ovcharenko, Irena Budzanivska, Volodymyr Rudas, Mykola Kuchuk

    Viral pathogens seriously decrease the yield of potato (Solanum tuberosum L.) –an important agricultural crop. Therefore, there is a demand for potato cultivars resistant to multiple viruses. Ribonucleases (RNases) are supposed to be engaged to antiviral response in plants. Heterologous RNase gene expression provides a tool for production of cultivars with multiple resistance to viruses and viroids. Transgenic potato cultivars Luhivs’ka and Lasynak with heterologous genes bov and ZRNase II of apoplastic RNases from Bos taurus and Zinnia elegans respectively were obtained via Agrobacterium-mediated transformation. The presence of bov and ZRNase II transgenes was confirmed by PCR analysis. RNase activity was examined by modified Oleshko method. Plants with heterologous ribonuclease genes had higher level of RNase activity compared to nontransgenic ones. Transgenic plants inoculated with Potato virus Y, PVY (genus Potyvirus, family Potyviridae) demonstrated delayed and less severe symptoms of viral infection. DAS-ELISA confirmed the presence of viral antigens both in transformed and control plants. Visual manifestations of viral infection in transgenic potatoes were milder than in control plants and their development was delayed, but complete elimination of the virus did not occur.


  • Open Access

    Obtaining of transgenic potato plants (Solanum tuberosum L.) that contain antisense sequence of prolindehydrogenase gene

    by O. O. Ovcharenko, V. A. Rudas, N. L. Shcherbak, M. V. Kuchuk

    Aim. The aim of our work was to obtain transgenic potato plants of Ukrainian varieties with the expression of a double-stranded RNA suppressor of proline dehydrogenase gene. We propose the decrease of proline degradation level and increase of overall proline concentration in obtained transgenic plants. Methods. The Agrobasterium tumefaciens-mediated method of genetic transformation to obtain transgenic plants of potato was used. Internodes of aseptic potato plants were transformed with a binary vector pBi2E containing an inverted repeats of two copies of proline dehydrogenase gene’s first exon and the gene of neomycin phosphotransferase II (nptII). Results. As a result of experiments kanamycin resistant transgenic potato lines of Deseiree, Belarusian 12 and Slavianka varieties were obtained. The transgenic nature of the obtained plants was confirmed by PCR with primers specific to the first exon of proline dehydrogenase and to nptII genes. Conclusions. The optimized conditions of genetic transformation and used agrobacterial strain allow to obtain the transgenic plants of a model potato variety Désirée, as well as varieties Belorussian 12 and Slovyanka which are of practical interest for cultivation in Ukraine. Keywords: transgenic plants, potatoes (Solanum tuberosum L.), stress resistance, proline.


  • Open Access

    Determination of antioxidant activity in transgenic Dendrobium linguella Rchb. f orchid plants containing bar and cytochrome P450scc cyp11A1 genes

    by M. Shynkarchuk, V. Rudas, O. Markovskyi, T. Kyrpa-Nesmiian, B. Morhun, O. Ovcharenko, R. Ivannikov, O. Sytnik

    Antioxidant activity was determined in 17 transgenic clones of Dendrobium linguella orchids obtained through Agrobacterium-mediated transformation. The plants contained cyp11A1 encoding mitochondrial cytochrome P450scc and the selectable bar gene associated with herbicide resistance. Superoxide dismutase activity was measured using photochemical oxidation of nitroblue tetrazolium. Leaf extracts were prepared in Tris-HCl buffer and centrifuged, and the resulting supernatants were analysed. Absorbance at 550 nm was compared between illuminated reaction mixtures and samples kept in darkness. Enzyme activity was expressed per milligram of protein. Antioxidant activity in transgenic samples differed substantially from the untransformed control. Editorial note (2026): This abstract was prepared for reference purposes using artificial intelligence technology, based on the original publication, without the involvement of the author(s).

  • Open Access

    Production of Basta-resistant transgenic Dendrobium linguella orchids carrying the cytochrome P450scc CYP11A1 gene

    by M. Shynkarchuk, V. Rudas, B. Morhun, O. Markovskyi, O. Ovcharenko, R. Ivannykov

    Dendrobium linguella orchids were genetically transformed with a construct containing the bar gene and the cytochrome P450scc cyp11A1 gene to obtain plants with improved productivity and herbicide resistance. The bar gene served as a bialaphos resistance marker. Following 8–10 months of selection, 17 transformed plants were obtained and analyzed molecularly. PCR using two primer pairs for each gene confirmed integration of bar and cyp11A1 into the genome of all regenerated clones. The study reports production of Dendrobium linguella plants carrying both transgenes. Editorial note (2026): This abstract was prepared for reference purposes using artificial intelligence technology, based on the original publication, without the involvement of the author(s).