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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">10.29235/1561-8323-2022-66-2-199-205</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1055</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>Особенности действия брассиностероидов на растения в условиях солевого стресса</article-title><trans-title-group xml:lang="en"><trans-title>Features of the brassinosteroid effect on plants under salt stress</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>Ламан</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Laman</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ламан Николай Афанасьевич – академик, доктор биологических наук, профессор, заведующий лабораторией</p><p>ул. Академическая, 27, 220072, Минск</p></bio><bio xml:lang="en"><p>Laman Nikolai A. – Academician, D. Sc. (Biology), Professor, Head of the Laboratory</p><p>27, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">nikolai.laman@gmail.com</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>Кем</surname><given-names>К. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kem</surname><given-names>K. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кем Карина Робертовна – научный сотрудник</p><p>ул. Академическая, 27, 220072, Минск</p></bio><bio xml:lang="en"><p>Kem Karina R. – Researcher</p><p>27, Akademicheskaya Str., 220072, Minsk</p></bio><email xlink:type="simple">kem-666@mail.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>Аникеев</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Anikeev</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аникеев Владимир Иванович – старший научный сотрудник</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Anikeev Vladimir I. – Senior Researcher</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">vz@iboch.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жабинский</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhabinskii</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жабинский Владимир Николаевич – член-корреспондент, д-р хим. наук, доцент, главный научный сотрудник</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Zhabinskii Vladimir N. – Corresponding Member, D. Sc. (Chemistry), Assistant Professor, Chief Researcher</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">vz@iboch.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хрипач</surname><given-names>Н. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khripach</surname><given-names>N. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хрипач Наталья Борисовна – кандидат химических наук, ведущий специалист</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Khripach Natalia B. – Ph. D. (Chemistry), Leading Specialist</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">nkhripach@iboch.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт экспериментальной ботаники имени В. Ф. Купревича Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>V. F. Kuprevich Institute of Experimental Botany of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт биоорганической химии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Bioorganic Chemistry of the National Academy of Science of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>05</month><year>2022</year></pub-date><volume>66</volume><issue>2</issue><fpage>199</fpage><lpage>205</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ламан Н.А., Кем К.Р., Аникеев В.И., Жабинский В.Н., Хрипач Н.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ламан Н.А., Кем К.Р., Аникеев В.И., Жабинский В.Н., Хрипач Н.Б.</copyright-holder><copyright-holder xml:lang="en">Laman N.A., Kem K.R., Anikeev V.I., Zhabinskii V.N., Khripach N.B.</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/1055">https://doklady.belnauka.by/jour/article/view/1055</self-uri><abstract><p>Исследована зависимость протекторного действия брассиностероидов (БС) в широком диапазоне концентраций на рост корневой системы проростков льна-долгунца (Linum usitatissimum L.) и ярового ячменя (Hordeum vulgare L.) в условиях солевого стресса. Выявлены узкие диапазоны концентраций БС (6,9 ⋅ 10–7–5,9 ⋅ 10–8 М для льна-долгунца и 2,8 ⋅ 10–7–2,4 ⋅ 10–8 М для ярового ячменя), в которых они вызывают ослабление ингибирующего эффекта засоления на корневую систему проростков. Отмечено практически полное совпадение диапазонов концентраций БС, в которых наблюдалось максимальное стресс-протекторное действие фитогормонов для обеих культур. В опыте с озимой пшеницей (Triticum aestivum L.), длившемся 19 суток, уже на 6-е сутки, до помещения растений в стрессовые условия, было отмечено удлинение проростков, обработанных экзогенными брассиностероидами, а к концу эксперимента (в фазу развертывания второго листа) все брассиностероиды показали выраженный защитностимулирующий эффект в условиях засоления, зависящий от химической структуры гормона и изменяющийся в ряду брассинолид &gt; гомобрассинолид &gt; гомокастастерон &gt; эпибрассинолид.</p><p> </p></abstract><trans-abstract xml:lang="en"><p>The dependence of the protective effect of brassinosteroids (BS) in a wide range of concentrations on the growth of the root system of fiber flax (Linum usitatissimum L.) and spring barley (Hordeum vulgare L.) seedlings under salt stress was studied. A narrow range of BS concentrations was revealed, in which they cause a weakening of the inhibitory effect of salinity on the root system of seedlings. An almost complete coincidence of the BS concentration ranges was noted, in which the maximum stress-protective effect of phytohormones was observed for the both crops (6,9 ⋅ 10–7–5,9 ⋅ 10–8 М for fiber flax and 2,8 ⋅ 10–7–2,4 ⋅ 10–8 М for spring barley). In the experiment with winter wheat (Triticum aestivum L.), which lasted 19 days, already on the 6th day before the seedlings were placed under stress conditions, the elongation of the seedlings treated with exogenous brassinosteroids was noted. By the end of the experiment (in the second leaf unfolding phase), all brassinosteroids showed a pronounced protective-stimulating effect under the salinity conditions that depended on the chemical structure of the hormone and changed in the brassinolide &gt; homobrassinolide &gt; homocastasterone &gt; epibrassinolide series.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ячмень</kwd><kwd>озимая пшеница</kwd><kwd>лен-долгунец</kwd><kwd>засоление</kwd><kwd>солевой стресс</kwd><kwd>брассиностероиды</kwd><kwd>брассинолид</kwd><kwd>эпибрассинолид</kwd><kwd>гомобрассинолид</kwd><kwd>гомокастастерон</kwd><kwd>инкрустация</kwd><kwd>ингибирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>barley</kwd><kwd>winter wheat</kwd><kwd>fiber flax</kwd><kwd>salinization</kwd><kwd>salt stress</kwd><kwd>brassinosteroids</kwd><kwd>brassinolide</kwd><kwd>epibrassinolide</kwd><kwd>homobrassinolide</kwd><kwd>homocastasterone</kwd><kwd>incrustation</kwd><kwd>inhibition</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">Khripach, V. 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