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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/achb.902</article-id><article-id custom-type="edn" pub-id-type="custom">MAEZIW</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-1183</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>ФИЗИКО-ХИМИЧЕСКАЯ БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Изучение влияния ионов меди на состав фитостеринов  вакуолярной мембраны Beta vulgaris L.</article-title><trans-title-group xml:lang="en"><trans-title>Effect of copper ions on the composition of phytosterols  of the vacuolar membrane of Beta vulgaris L.</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7440-5658</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Спиридонова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Spiridonona</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Спиридонова Екатерина Владимировна, к.б.н., научный сотрудник</p><p>664033, г. Иркутск, ул. Лермонтова, 132</p></bio><bio xml:lang="en"><p>Ekaterina V. Spiridonona, Cand. Sci. (Biology), Researcher</p><p>132, Lermontov St., Irkutsk, 664033</p></bio><email xlink:type="simple">yatakol@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5159-9816</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капустина</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapustina</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Капустина Ирина Сергеевна, к.б.н., старший научный сотрудник</p><p>664033, г. Иркутск, ул. Лермонтова, 132</p></bio><bio xml:lang="en"><p>Irina S. Kapustina, Cand. Sci. (Biology), Senior Researcher</p><p>132, Lermontov St., Irkutsk, 664033</p><p>   </p></bio><email xlink:type="simple">nirinka24@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7552-0818</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гурина</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gurina</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гурина Вероника Валериевна, к.б.н., научный сотрудник</p><p>664033, г. Иркутск, ул. Лермонтова, 132</p></bio><bio xml:lang="en"><p>Veronica V. Gurina, Cand. Sci. (Biology), Researcher</p><p>132, Lermontov St., Irkutsk, 664033</p><p>   </p></bio><email xlink:type="simple">nichka.g@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1076-3944</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семёнова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Semyonova</surname><given-names>N.  V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семёнова Наталья Викторовна, к.б.н., научный сотрудник</p><p>664033, г. Иркутск, ул. Лермонтова, 132</p></bio><bio xml:lang="en"><p>Natalia V. Semyonova, Cand. Sci. (Biology), Researcher</p><p>132, Lermontov St., Irkutsk, 664033</p><p>   </p></bio><email xlink:type="simple">tashasemyonova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0436-8166</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Озолина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ozolina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Озолина Наталья Владимировна, д.б.н., заведующий лабораторией</p><p>664033, г. Иркутск, ул. Лермонтова, 132</p></bio><bio xml:lang="en"><p>Natalia V. Ozolina, Dr. Sci. (Biology), Head of the Laboratory</p><p>132, Lermontov St., Irkutsk, 664033</p><p>   </p></bio><email xlink:type="simple">ozol@sifibr.irk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский институт физиологии и биохимии растений СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian Institute of Plant Physiology and Biochemistry SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>28</day><month>03</month><year>2024</year></pub-date><volume>14</volume><issue>1</issue><fpage>90</fpage><lpage>98</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Спиридонова Е.В., Капустина И.С., Гурина В.В., Семёнова Н.В., Озолина Н.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Спиридонова Е.В., Капустина И.С., Гурина В.В., Семёнова Н.В., Озолина Н.В.</copyright-holder><copyright-holder xml:lang="en">Spiridonona E.V., Kapustina I.S., Gurina V.V., Semyonova N.V., Ozolina N.V.</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://vuzbiochemi.elpub.ru/jour/article/view/1183">https://vuzbiochemi.elpub.ru/jour/article/view/1183</self-uri><abstract><p>Целью исследования являлось изучение влияния различных концентраций ионов меди на состав фитостеринов вакуолярной мембраны (тонопласта) корнеплодов столовой свеклы (Beta vulgaris L.). Для характеристики стресса, вызванного действием ионов меди, проводилось кондуктометрическое изучение проницаемости клеточных мембран и определение уровня перекисного окисления липидов. В результате установлено, что в присутствии меди происходит увеличение этих показателей в тканях корнеплодов столовой свеклы. Среди фитостеринов тонопласта были изучены β-ситостерин, стигмастерин, кампестерин и холестерин. В составе клеточных мембран они выполняют структурную функцию, вносят вклад в образование липидных микродоменов, оказывают влияние на рост и развитие растений, а также участвуют в ответных реакциях растений на стресс. Изучение влияния ионов меди на фитостерины тонопласта показало, что большую часть из них занимает свободная форма. В присутствии 100 мкМ меди было выявлено существенное увеличение содержания кампестерина. Важным показателем состояния растительных мембран являются отношения стигмастерина/β-ситостерина и 24-метил-/этилстеринов, которые могут влиять на ответ растений на стресс. Выявленные увеличения в соотношениях стигмастерина/β-ситостерина и 24-метил-/этилстеринов, вероятно, выступают в роли одного из механизмов регулирования функционирования тонопласта в условиях стресса, вызванного ионами меди. Таким образом, полученные результаты могут говорить об участии клеточных мембран, в том числе тонопласта, в механизмах адаптации клеток тканей корнеплодов столовой свеклы к стрессу, вызванному ионами меди.</p></abstract><trans-abstract xml:lang="en"><p>The study set out to investigate the effect of different concentrations of copper ions on the composition of phytosterols of the vacuolar membrane (tonoplast) of beetroot (Beta vulgaris L.). To characterise the stress caused by the action of copper ions, a conductometric study of the permeability of cell membranes and the level of lipid peroxidation was carried out. The results demonstrate an increase in these indicators in beetroot tissues. Among tonoplast phytosterols, β-sitosterol, stigmasterol, campesterol, and cholesterol were studied. In cell membranes, these phytosterols perform a structural function, contributing to lipid microdomain formation, influencing plant growth and development, and participating in plant responses to stress. The study of the effect of copper ions on tonoplast phytosterols showed most of them to be occupied by the free form. In the presence of 100 μM copper, a significant increase in campesterol content was detected. The ratio of stigmasterol/β-sitosterol and 24-methyl-/ ethylsterol, which may influence the stress response of plants, is an important indicator of plant membrane health. The observed increases in the ratios of stigmasterol/β-sitosterol and 24-methyl-/ethylsterols can be explained in terms of mechanisms for regulating the functioning of the tonoplast under stress caused by copper ions. Thus, the obtained results may indicate the participation of cell membranes, including tonoplast, in the mechanisms of adaptation of beetroot tissue cells to stress caused by copper ions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Beta vulgaris L.</kwd><kwd>медь</kwd><kwd>стресс</kwd><kwd>вакуолярная мембрана (тонопласт)</kwd><kwd>стерины</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Beta vulgaris L.</kwd><kwd>copper</kwd><kwd>stress</kwd><kwd>vacuolar membrane (tonoplast)</kwd><kwd>sterols</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет средств гранта Российского научного фонда № 23-26-00208 (https://rscf.ru/project/23-26-00208/) на оборудовании Центра коллективного пользования «Биоаналитика» Сибирского института физиологии и биохимии растений СО РАН (г. Иркутск, Российская Федерация).</funding-statement><funding-statement xml:lang="en">The study was funded by the grant of the Russian Science Foundation no. 23-26-00208, https://rscf.ru/ project/23-26-00208/. The equipment of the Bioanalytica Center for Collective Use of the Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences (Irkutsk) was used.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Rahman Z., Singh V.P. The relative impact of toxic heavy metals (THMs) (arsenic (As), cadmium (Cd), chromium (Cr) (VI), mercury (Hg), and lead (Pb)) on the total environment: an overview // Environmental Monitoring and Assessment. 2019. Vol. 191. P. 419. DOI: 10.1007/s10661-019-7528-7.</mixed-citation><mixed-citation xml:lang="en">Rahman Z., Singh V.P. 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