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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-705</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLE</subject></subj-group></article-categories><title-group><article-title>РАЗВИТИЕ ПОТЕНЦИАЛЬНО ТОКСИЧНОЙ ЦИАНОБАКТЕРИИ DOLICHOSPERMUM FLOS-AQUAE (ANABAENA FLOS-AQUAE) В ВОДЕМАХ БОРЕАЛЬНОЙ ЗОНЫ</article-title><trans-title-group xml:lang="en"><trans-title>GROWTH OF TOXIC CYANOBACTERIA DOLICHOSPERMUM FLOS-AQUAE (ANABAENA FLOS-AQUAE) IN THE WATERS OF BOREAL ZONE</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>Капков</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapkov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Капков Валентин Иванович – доктор биологических наук, профессор кафедры гидробиологии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12 </p></bio><bio xml:lang="en"><p>Department of Hydrobiology</p><p>Leninskiye gory 1–12, Moscow, 119234</p><p> </p></bio><email xlink:type="simple">chelena45@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>Васильева</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilieva</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васильева Светлана Геннадьевна – доктор биологических наук, научный сотрудник кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12 </p></bio><bio xml:lang="en"><p>Department of Bioengineering, School of Biology</p><p>Leninskiye gory 1–12, Moscow, 119234</p></bio><email xlink:type="simple">vankat2009@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>Лобакова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Lobakova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лобакова Елена Сергеевна – доктор биологических наук, профессор, заместитель заведующего кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12 </p></bio><bio xml:lang="en"><p>Department of Bioengineering, School of Biology</p><p>Leninskiye gory 1–12, Moscow, 119234</p></bio><email xlink:type="simple">elena.lobakova@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Московский государственный университет имени М.В. Ломоносова<country>Россия</country></aff><aff xml:lang="en">Lomonosov Moscow State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>18</day><month>03</month><year>2019</year></pub-date><volume>74</volume><issue>1</issue><fpage>19</fpage><lpage>26</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Капков В.И., Васильева С.Г., Лобакова Е.С., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Капков В.И., Васильева С.Г., Лобакова Е.С.</copyright-holder><copyright-holder xml:lang="en">Kapkov V.I., Vasilieva S.G., Lobakova E.S.</copyright-holder><license 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://vestnik-bio-msu.elpub.ru/jour/article/view/705">https://vestnik-bio-msu.elpub.ru/jour/article/view/705</self-uri><abstract><p>Целью настоящей работы стало исследование цикла развития цианобактерии Dolichospermum flos-aquae, вызывающей «цветение» воды в водоемах бореальной зоны. Массовое развитие D. flos-aquae в планктонной стадии обусловлено способностью реализовывать высокий биотический потенциал благодаря комбинации жизненно важных признаков, приобретенных в процессе эволюции, которые отсутствуют у партнеров по планктонному сообществу. К их числу относятся: адаптация к определенной температуре роста; низкая потребность в биогенных элементах; азотофиксация и внутриклеточная аккумуляция фосфатов; способность трихомов к миграции, позволяющей занимать оптимальный для фотосинтеза горизонт в эвфотической зоне. Установлено, что D. flos-aquae во время планктонной стадии развития представляет собой популяцию гетероцитных трихомов, включающую вегетативные клетки разной степени зрелости, гетероцисты и акинеты, соотношение которых изменяется в течение жизненного цикла микроорганизмов. Как полагают в ряде исследований, выделяемые в среду первичные и вторичные метаболиты регулируют как рост собственной популяции D. flos-aquae, включая разрушение клеток на конечной стадии «цветения» и формирование акинет, так и ингибирование развития партнеров по сообществу. При доминировании одного вида токсичные метаболиты, выделение которых возрастает в годы с антициклональным типом погоды, снижают видовое разнообразие в планктоне, упрощая структуру биотического сообщества.</p></abstract><trans-abstract xml:lang="en"><p>The aim of this work was to study the life cycle of cyanobacteria Dolichospermum flos-aquae, causing the «blooming» of waters of the boreal zone. The mass propagation of the D. flos-aquae in the plankton stage occurs due to their ability to realize high biotic potential, defined by the combination of features developed during evolution, which the other partners of the plankton community lack. These include: adaptation to a certain growth temperature; low demand for nutrients; nitrogen fixation and intracellular accumulation of phosphates; the ability of trichomes to migrate, allowing to occupy the optimal parts of euphotic zones for photosynthesis. It is established that during the planktonic stage the trichomes of D. flos-aquae consists of heterocysts and vegetative cells of different maturity, generosity and activity, the ratio of which changes throughout the life cycle of microorganisms. It is believed that the primary and secondary metabolites released by D. flos-aquae into the medium take part in the regulation of own population growth including the cell destruction at the final stage of «blooming», akinetes formation and the simultaneous suppression of propagation of community partners. With the dominance of one species, the released toxic metabolites increase in years with anticyclone type of weather, resulted in the reducing of species diversity and the simplifying of the biotic community structure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цианобактерии</kwd><kwd>«цветение» воды</kwd><kwd>биотический потенциал</kwd><kwd>структура сообщества</kwd><kwd>первичные метаболиты</kwd><kwd>вторичные метаболиты</kwd><kwd>цианотоксины</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cyanobacteria</kwd><kwd>algal blooms</kwd><kwd>biotic potency</kwd><kwd>structure of community</kwd><kwd>primary metabolites</kwd><kwd>secondary metabolites</kwd><kwd>cyanotoxins</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Российский научный фонд (проект № 16-14-00112)</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">Paerl H., Huisman J. 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