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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2025-69-6-488-497</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1284</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Экспрессия генов R1 и PR1 в листьях картофеля (Solanum tuberosum L.) сортов белорусской селекции, различных по устойчивости к фитофторозу</article-title><trans-title-group xml:lang="en"><trans-title>Expression of R1 and PR1 genes in leaves of belarusianbreeded potato (Solanum tuberosum L.) varieties with different resistance to late blight</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнов Андрей Александрович – мл. науч. cотрудник </p><p>ул. Академическая, 27, 220072, Минск </p></bio><bio xml:lang="en"><p>Smirnov Andrei A. – Junior Researcher</p><p>27, Akademicheskaya Str., 220072, Minsk </p></bio><email xlink:type="simple">aasm96@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кабачевская</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kabachevskaya</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кабачевская Елена Михайловна – канд. биол. наук, доцент, заведующий лабораторией</p><p>ул. Академическая, 27, 220072, Минск </p></bio><bio xml:lang="en"><p>Kabachevskaya Elena M. – Ph. D. (Biology), Associate Professor, Head of the Laboratory</p><p>27, Akademicheskaya Str., 220072, Minsk </p></bio><email xlink:type="simple">kabachevskaya@ibce.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волотовский</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Volotovsky</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волотовский Игорь Дмитриевич – академик, д-р биол. наук, профессор, гл. науч. сотрудник</p><p>ул. Академическая, 27, 220072, Минск </p></bio><bio xml:lang="en"><p>Volotovsky Igor D. – Academician, D. Sc. (Biology), Professor, Chief Researcher</p><p>27, Akademicheskaya Str., 220072, Minsk </p></bio><email xlink:type="simple">volotovski@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биофизики и клеточной инженерии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>05</day><month>01</month><year>2026</year></pub-date><volume>69</volume><issue>6</issue><fpage>488</fpage><lpage>497</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнов А.А., Кабачевская Е.М., Волотовский И.Д., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Смирнов А.А., Кабачевская Е.М., Волотовский И.Д.</copyright-holder><copyright-holder xml:lang="en">Smirnov A.A., Kabachevskaya E.M., Volotovsky I.D.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/1284">https://doklady.belnauka.by/jour/article/view/1284</self-uri><abstract><p>Проведено исследование динамики экспрессии генов R1 и PR1 в тканях листьев картофеля (Solanum tuberosum L.) высокоустойчивого к фитофторозу сорта Вектар и низкоустойчивого сорта Уладар в норме и при их заражении в течение 3 суток Phytophthora infestans (Mont.) de Bary, определены общие и сортоспецифические закономерности в защитных ответах на уровне относительной экспрессии изученных генов. Обнаружено, что в отсутствии заражения в листьях сорта Вектар детектируется экспрессия R1, которая незначительно возрастает после заражения листьев фитофторой. В неустойчивом сорте Уладар экспрессия R1 не зафиксирована ни в здоровых, ни в зараженных листьях. Экспрессия PR1 в сорте Вектар присутствует в клетках незараженных листьев и увеличивается при заражении. Сорт Уладар характеризуется существенно более низким уровнем экспрессии PR1 в незараженных и зараженных листьях по сравнению с сортом Вектар, однако более существенной в сравнении с ним ее активацией в ответ на атаку патогена. Обнаружено, что экзогенный донор этилена этефон оказывает стимулирующее влияние на экспрессию R1 в сорте Вектар и экспрессию PR1 в обоих сортах. Салициловая кислота оказывает существенное положительное влияние на экспрессию R1 и PR1 в сорте Вектар, но ингибирует накопление транскриптов PR1 в сорте Уладар. Синтетический брассиностероид эпин оказывает отрицательное действие на транскрипцию R1 и PR1 в обоих сортах. Полученные профили экспрессии генов R1 и PR1 у чувствительного и устойчивого сортов картофеля к действию фитофторы на фоне одновременного действия фитогормонов могут стать основой для ранней оценки чувствительности селекционных сортов картофеля к действию указанного фитопатогена.</p></abstract><trans-abstract xml:lang="en"><p>The dynamics of R1 and PR1 gene expression in leaves of potato (Solanum tuberosum L.) highly resistant cultivar Vectar and susceptible to late blight cultivar Uladar under normal conditions and after 3-day infection with Phytophthora infestans (Mont.) de Bary was studied. In the absence of infection, the expression of R1 was detected in the leaves of the Vectar, which was slightly increased after infection of leaves with late blight. In the susceptible Uladar R1 expression was not detected in either healthy or infected leaves. PR1 expression in the Vectar was present in the cells of uninfected leaves and increased during infection. The Uladar was characterized by a significantly lower level of PR1 expression in uninfected and infected leaves as compared to Vectar, but activation of PR1 expression in response to the pathogen attack was more significant in the Uladar than in the Vectar. The exogenous ethylene donor ethephon has a stimulating effect on expression of R1 in the Vectar and expression of PR1 in both cultivars. Exogenous salicylic acid has a significant positive effect on the expression of R1 and PR1 in the Vectar, but inhibited the accumulation of PR1 transcripts in the Uladar. The synthetic brassinosteroid epin has an inhibitory effect on the transcription of R1 and PR1 in both cultivars. The obtained data reflect general and cultivar-specific patterns in defense responses at the level of relative expression of the studied genes. The obtained expression profiles of the R1 and PR1 genes in potato varieties sensitive and resistant to the action of phytopathogenic microflora, against the background of the simultaneous action of phytohormones, can become the basis for an early assessment of the sensitivity of breeding potato varieties to the action of the specified microflora.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>картофель (Solanum tuberosum L.)</kwd><kwd>фитофтороз</kwd><kwd>R-гены</kwd><kwd>PR-гены</kwd><kwd>салициловая кислота</kwd><kwd>этилен</kwd><kwd>брассиностериоды</kwd></kwd-group><kwd-group xml:lang="en"><kwd>potato (Solanum tuberosum L.)</kwd><kwd>late blight</kwd><kwd>R-genes</kwd><kwd>PR-genes</kwd><kwd>salicylic acid</kwd><kwd>ethylene</kwd><kwd>brassinosteroids</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Global expression patterns of R-genes in tomato and potato / J. 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