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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">geomgou</journal-id><journal-title-group><journal-title xml:lang="ru">Географическая среда и живые системы</journal-title><trans-title-group xml:lang="en"><trans-title>Geographical Environment and Living Systems</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2712-7613</issn><issn pub-type="epub">2712-7621</issn><publisher><publisher-name>Московский государственный областной университет</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">geomgou-394</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>РАЗДЕЛ I БИОЛОГИЧЕСКИЕ НАУКИ</subject></subj-group></article-categories><title-group><article-title>АНАЛИЗ РОСТА МУТАНТА ARABIDOPSIS THALIANA ПО ГЕНАМ, КОНТРОЛИРУЮЩИМ СКОРОСТЬ СИНТЕЗА ЦИТОКИНИНОВ</article-title><trans-title-group xml:lang="en"><trans-title>ANALISIS OF GROWTH OF ARABIDOPSIS THALIANA MUTANTS WITH REDUCED RATE OF CYTOKININ SYNTHESIS</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>Филин</surname><given-names>Алексей Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Filin</surname><given-names>A. .</given-names></name></name-alternatives><email xlink:type="simple">79269129409@ya.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физиологии растений им. К.А.Тимирязева РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Timiryazev Institute of Plant Physiology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>06</day><month>05</month><year>2022</year></pub-date><volume>0</volume><issue>2</issue><fpage>14</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Филин А.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Филин А.Н.</copyright-holder><copyright-holder xml:lang="en">Filin 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.geoecosreda.ru/jour/article/view/394">https://www.geoecosreda.ru/jour/article/view/394</self-uri><abstract><p>В статье рассмотрено использование методики анализа роста корней на клеточном уровне у растений Arabidosis thaliana. Для сравнения взяты растения дикого типа и мутант с нарушеной экспрессией генов, ответственных за синтез ферментов АТФ/ АДФ-изопентилтрансераз, которые катализируют первый этап биосинтеза цитокининов. Эта мутация приводит к сокращению концентрации цитокининов в корне. Показана возможность использования данного мутанта для выяснения роли цитокининов в регуляции длительности клеточного цикла. По результатам эксперимента проведен расчет длительности клеточного цикла с использованием формулы В.Б. Иванова.</p></abstract><trans-abstract xml:lang="en"><p>We report an example of applying the method for analyzing root growth at a cellular level in Arabidopsis thaliana mutants with reduced cytokinin concentration in roots due to impaired expression of the genes encoding the enzyme ATP/ADP isopentenyl transferase which catalyses the first reaction of cytokinin biosynthesis pathway, as well as in wild type plants. We prove the possibility of using this mutant to unravel the role of cytokinins in the regulation of cell cycle duration. A formula for calculating cell cycle duration is also provided.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биология развития</kwd><kwd>клеточный цикл</kwd><kwd>фитогормоны</kwd><kwd>цитокинины</kwd><kwd>пролиферация</kwd><kwd>корень растения</kwd><kwd>Arabidosis thaliana</kwd><kwd>developmental biology</kwd><kwd>cell cycle</kwd><kwd>phytohormones</kwd><kwd>cytokinins</kwd><kwd>proliferation</kwd><kwd>plant roots</kwd><kwd>Arabidopsis thaliana</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">Иванов В.Б. Клеточные основы роста растений. - М.: Наука, 1974. -223 с.</mixed-citation><mixed-citation xml:lang="en">Иванов В.Б. 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