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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">agronauka</journal-id><journal-title-group><journal-title xml:lang="ru">Аграрная наука Евро-Северо-Востока</journal-title><trans-title-group xml:lang="en"><trans-title>Agricultural Science Euro-North-East</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-9081</issn><issn pub-type="epub">2500-1396</issn><publisher><publisher-name>FARC North-East</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30766/2072-9081.2023.24.1.66-76</article-id><article-id custom-type="elpub" pub-id-type="custom">agronauka-1248</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>ОРИГИНАЛЬНЫЕ СТАТЬИ: РАСТЕНИЕВОДСТВО</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ОRIGINAL SCIENTIFIC ARTICLES: PLANT GROWING</subject></subj-group></article-categories><title-group><article-title>Работа фотосистемы II листьев ярового ячменя под воздействием ионов марганца</article-title><trans-title-group xml:lang="en"><trans-title>Activity of photosystem II in spring barley leaves under the action of manganese ions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3125-3604</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лисицын</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lisitsyn</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лисицын Евгений Михайлович, доктор биол. наук, ведущий научный сотрудник, зав. отделом</p><p>ул. Ленина, д. 166а, г. Киров, 610007</p></bio><bio xml:lang="en"><p>Eugeny M. Lisitsyn, DSc in Biology, leading researcher, Head of the Department</p><p>Lenin str., 166a, Kirov, 610007</p></bio><email xlink:type="simple">edaphic@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/0000-0003-3900-5258</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чуракова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Churakova</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чуракова Светлана Алексеевна, младший научный сотрудник</p><p>ул. Ленина, д. 166а, г. Киров, 610007</p></bio><bio xml:lang="en"><p>Svetlana A. Churakova, junior researcher</p><p>Lenin str., 166a, Kirov, 610007</p></bio><email xlink:type="simple">priemnaya@fanc-sv.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Федеральный аграрный научный центр Северо-Востока имени Н. В. Рудницкого»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Agricultural Research Center of the North-East named N.V. Rudnitsky</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>22</day><month>02</month><year>2023</year></pub-date><volume>24</volume><issue>1</issue><fpage>66</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лисицын Е.М., Чуракова С.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Лисицын Е.М., Чуракова С.А.</copyright-holder><copyright-holder xml:lang="en">Lisitsyn E.M., Churakova S.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://www.agronauka-sv.ru/jour/article/view/1248">https://www.agronauka-sv.ru/jour/article/view/1248</self-uri><abstract><p>На растениях шести сортов ярового ячменя (стандарт – сорт Белгородский 100) оценено влияние ионов марганца на работу фотосистемы II (PSII) листьев. Растения в контроле (0 мг/л Mn) и опыте (30, 60, 90 мг/л Mn) выращивали на полной питательной среде Кнопа в условиях естественного освещения. На листьях 14-дневных растений регистрировали параметры быстрой флуоресценции хлорофилла с помощью флуорометра Fluor Pen FP 110/S. Обнаружено, что чувствительность различных структурных частей PSII варьирует в зависимости от концентрации ионов Mn и используемого генотипа. Так, потоки поглощенной энергии возросли у сорта Боярин при 30 и 60 мг/л Mn (на 7,9 и 14,1 %), сорта Фермер при 60 и 90 мг/л (на 15,8 и 16,1 %), но снизились у сортов Добряк при 30 и 90 мг/л (на 9,7 и 9,0 %), Фермер при 30 мг/л (на 15,8 %) и Бионик при 60 и 90 мг/л (на 8,0 и 6,8 %). Поток энергии, запасаемой в первичных фотохимических реакциях, у сорта Бионик усилился при 30 мг/л марганца (на 6,3 %), но снизился при 60 (на 6,8 %) и 90 мг/л (на 5,3 %), при 30 мг/л Mn повысился у сорта Боярин (на 6,4 %), однако снизился у сорта Форвард (на 11,7 %). Электронный транспорт, приводящий к фиксации СО2, повышался у сортов Фермер при всех концентрациях Mn (на 8,1…12,6 %), у сорта Бионик повысился при 30 мг/л (на 7,2 %), но снизился при 90 мг/л (на 7,4 %). Электронный поток, приводящий к окислению конечного акцептора PSI, у исследованных сортов не изменялся под влиянием стрессора. Интегральные показатели активности PSII (индексы PIABS и PIABS_total) в стрессовых условиях определялись генотипом растений. Это свидетельствует, во-первых, о необходимости проведения адресной селекции (к конкретному уровню действующего фактора), во-вторых, о возможности пирамидирования интегрального уровня устойчивости к стрессору путем подбора родителей, отличающихся по уровню изменения отдельных функциональных реакций фотосинтеза.</p></abstract><trans-abstract xml:lang="en"><p>The influence of manganese ions (30, 60 and 90 mg/l) on the functioning of the photosystem II (PSII) in leaves was assessed on plants of six spring barley cultivars (Belgorodsky 100, st.). The plants were grown on a complete Knop medium without (control) and with the addition of manganese ions (experiment) under natural light conditions. On 14-day-old leaves, parameters of chlorophyll's rapid fluorescence were recorded using a Fluor Pen FP 110/S fluorometer. The sensitivity of the different structural parts of PSII was found to vary depending on the concentration of Mn ions and the genotype used. Thus, absorbed energy flows increased in the cv. Boyarin at 30 and 60 mg/l Mn (by 7.9 and 14.1 %), in cv. Farmer at 60 and 90 mg/l  (by 15.8 and 16.1 %), but decreased in cv. Dobryak at 30 and 90 mg/l (by 9.7 and 9.0 %), Farmer at 30 mg/l (by 15.8 %) and Bionic at 60 and 90 mg/l (by 8.0 and 6.8 %). The flow of energy stored in primary photochemical reactions in the cv. Bionic increased at 30 mg/l of manganese (by 6.3 %), but decreased at 60 (by 6.8 %) and 90 mg/l (by 5.3 %); increased in the cv. Boyarin at 30 mg/l of Mn (by 6.4 %), but decreased in the cv. Forward (by 11.7 %). Electronic transport leading to CO2 fixation increased in cv. Farmer at all Mn concentrations (by 8.1...12.6 %), and in cv. Bionic it increased at 30 mg/l (by 7.2 %), but decreased at  90 mg/l (by 7.4 %). The electron flux leading to the oxidation of the finile acceptor of PSI in the studied cultivars did not change under the influence of the stressor. However, the integral parameters of PSII activity (PIABS and PIABS_total indices) under stressful conditions were determined by the plant genotype. This indicates, firstly, the need for targeted selection (to a specific level of the stress factor); secondly, on the possibility of pyramidation of the integral level of resistance to the stressor by selecting parents who differ in the level of change in individual functional reactions of photosynthesis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Hordeum vulgare L.</kwd><kwd>флуоресценция хлорофилла</kwd><kwd>реакционный центр</kwd><kwd>пластохинон</kwd><kwd>электронный транспорт</kwd><kwd>поток световой энергии</kwd><kwd>перформанс-индекс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Hordeum vulgare L.</kwd><kwd>chlorophyll fluorescence</kwd><kwd>reaction center</kwd><kwd>plastoquinone</kwd><kwd>electron transport</kwd><kwd>light energy flux</kwd><kwd>performance index</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Минобрнауки РФ в рамках Государственного задания ФГБНУ «Федеральный аграрный научный центр Северо-Востока имени Н. В. Рудницкого» (тема № FNWE-2022-0007). Авторы благодарят рецензентов за их вклад в экспертную оценку этой работы.</funding-statement><funding-statement xml:lang="en">the research was carried out under the support of the Ministry of Science and Higher Education of the Russian Federation within the state assignment of Federal Agricultural Research Center of the North-East named N. V. Rudnitsky (theme No. FNWE-2022-0007).  The authors thank the reviewers for their contribution to the peer review of this work</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">Dorsaf A., Anis B.-A., Chedly A. Leaf photosynthesis, chlorophyll fluorescence and ion content of barley (Hordeum vulgare) in response to salinity. Journal of Plant Nutrition. 2018;41(4):497-508. 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