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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">sevin</journal-id><journal-title-group><journal-title xml:lang="ru">ПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛ</journal-title><trans-title-group xml:lang="en"><trans-title>Povolzhskiy Journal of Ecology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1684-7318</issn><issn pub-type="epub">2541-8963</issn><publisher><publisher-name>Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35885/1684-7318-2021-3-310-318</article-id><article-id custom-type="elpub" pub-id-type="custom">sevin-279</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Оценка воздействия солей тяжелых металлов на фотосинтетическую активность водных растений</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of the effect of heavy metal salts on the photosynthetic activity of aquatic plants</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4054-2934</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лобкова</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lobkova</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лобкова Галина Викторовна</p><p>410054, г. Саратов, ул. Политехническая, д. 77</p></bio><bio xml:lang="en"><p>Galina V. Lobkova</p><p>77 Politechnicheskaya St., Saratov 410054</p></bio><email xlink:type="simple">galinlobkova@ya.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/0000-0001-6030-7344</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тихомирова</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tikhomirova</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тихомирова Елена Ивановна - кафедра «Экология и техносферная безопасность»</p><p>410054, г. Саратов, ул. Политехническая, д. 77</p></bio><bio xml:lang="en"><p>Elena I. Tikhomirova - Department Ecology and Technosphere safety</p><p>77 Politechnicheskaya St., Saratov 410054</p></bio><email xlink:type="simple">tichomirova_ei@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/0000-0002-2353-1547</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Симонова</surname><given-names>З. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Simonova</surname><given-names>Z. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Симонова Зоя Александровна</p><p>410054, г. Саратов, ул. Политехническая, д. 77</p></bio><bio xml:lang="en"><p>Zoya A. Simonova</p><p>77 Politechnicheskaya St., Saratov 410054</p></bio><email xlink:type="simple">simonovaza@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Саратовский государственный технический университет имени Гагарина Ю. А.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Yuri Gagarin State Technical University of Saratov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>23</day><month>11</month><year>2021</year></pub-date><volume>0</volume><issue>3</issue><fpage>310</fpage><lpage>318</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лобкова Г.В., Тихомирова Е.И., Симонова З.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Лобкова Г.В., Тихомирова Е.И., Симонова З.А.</copyright-holder><copyright-holder xml:lang="en">Lobkova G.V., Tikhomirova E.I., Simonova Z.A.</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://sevin.elpub.ru/jour/article/view/279">https://sevin.elpub.ru/jour/article/view/279</self-uri><abstract><p>Проведена оценка состояния фотосинтетических пигментов у водных растений Lemna minor L. и Elodea canadensis Michx. при действии на них ацетатов Ni2+, Co2+, Сu2+ и Pb2+ в концентрациях 5.00, 2.50, 1.25, 0.62, 0.31, 0.15, 0.07, 0.03 мг/л по изменению интенсивности флуоресценции хлорофиллов а и b и по их соотношению. Установлено, что ацетат никеля в исходных растворах во всех вышеперечисленных концентрациях вызывает у L. minor увеличение интенсивности флуоресценции хлорофиллов а и b по отношению к контролю, а соль свинца подавляет её. Ацетат Co2+ ингибирует флуоресценцию хлорофилла а при концентрациях исходных растворов 0.03 – 0.15 и 2.50 мг/л и хлорофилла b при всех концентрациях, кроме 0.62, 1.25 и 2.50 мг/л. Для E. canadensis установлено, что соли всех металлов во всех концентрациях вызывают снижение интенсивности флуоресценции хлорофилла a относительно контроля и увеличивают её в случае хлорофилла b. Исключение составляет действие ацетатов меди и свинца с концентрацией 1.25 мг/л, при которых интенсивность флуоресценции хлорофилла b сохраняется на уровне контроля. Присутствие в культивационной среде ацетатов Ni2+, Co2+, Cu2+, Pb2+ во всех концентрациях оказывает влияние на количественные и качественные характеристики хлорофиллов a и b, что свидетельствует о нарушении процесса фотосинтеза. Данные по изменению соотношения хлорофиллов a/b позволяют сделать вывод о деградации хлорофилла а по отношению к хлорофиллу b при воздействии металлов. </p></abstract><trans-abstract xml:lang="en"><p>The status of the photosynthetic pigments in the aquatic plants Lemna minor L. and Elodea canadensis Michx. under the action of Ni2+, Co2+, Cu2+ and Pb2+ acetate in concentrations 5.00, 2.50, 1.25, 0.62, 0.31, 0.15, 0.07, and 0.03 mg/L was assessed by changes in the fluorescence intensity of chlorophyll a and b and their ratio. It was established that nickel acetate in original solutions in all the above concentrations caused an increase in the fluorescence intensity of chlorophylls a and b in L. minor in relation to the control while the lead salt suppressed it. Co2+ acetate inhibits the fluorescence of chlorophyll a with concentrations in the initial solutions of 0.03 to 0.15 and 2.50 mg/L and that of chlorophyll b at all concentrations, except 0.62, 1.25 and 2.50 mg/L. For E. canadensis it was found that the salts of all metals at all concentrations caused a reduction of the fluorescence intensity of chlorophyll a relative to the control and increased it in the case of chlorophyll b. The exception is the effect of copper and lead acetates with a concentration of 1.25 mg/L, when the fluorescence intensity of chlorophyll b is maintained at the control level. The presence of Ni2+, Co2+, Cu2+, and Pb2+ acetates in all concentrations in the culture medium influences the quantitative and qualitative characteristics of chlorophyll a and b, which indicates a violation of the photosynthesis process. Our data on the change in the chlorophyll a / b ratio leads to a conclusion about degradation of chlorophyll a relative to chlorophyll b after the effect of heavy metals.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Lemna minor</kwd><kwd>Elodea canadensis</kwd><kwd>тяжелые металлы</kwd><kwd>фотосистемы I и II</kwd><kwd>интенсивность флуоресценции</kwd><kwd>соотношение хлорофиллов а / b</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lemna minor</kwd><kwd>Elodea canadensis</kwd><kwd>heavy metals</kwd><kwd>photosystem I and II</kwd><kwd>fluorescence intensity</kwd><kwd>the chlorophyll a / b ratio</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при частичной финансовой поддержке Российского научного фонда (проект № 20-64-46018).</funding-statement><funding-statement xml:lang="en">The reported study was funded by Russian Science Foundation (project number 20-64- 46018).</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">Абрамова Э. 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