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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="brief-report" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of microbiology, epidemiology and immunobiology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of microbiology, epidemiology and immunobiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал микробиологии, эпидемиологии и иммунобиологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0372-9311</issn><issn publication-format="electronic">2686-7613</issn><publisher><publisher-name xml:lang="en">Central Research Institute for Epidemiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">13875</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Short Communication</subject></subj-group></article-categories><title-group><article-title xml:lang="en">FEATURES OF DYNAMICS OF GROWTH AND FORMATION OF UNCULTIVABLE FORMS IN LACTOCOCCUS LACTIS</article-title><trans-title-group xml:lang="ru"><trans-title>ОСОБЕННОСТИ ДИНАМИКИ РОСТА И ОБРАЗОВАНИЯ НЕКУЛЬТИВИРУЕМЫХ ФОРМ У LACTOCOCCUS LACTIS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pakhomov</surname><given-names>Yu. D</given-names></name><name xml:lang="ru"><surname>Пахомов</surname><given-names>Ю. Д</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Blinkova</surname><given-names>L. P</given-names></name><name xml:lang="ru"><surname>Блинкова</surname><given-names>Л. П</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dmitrieva</surname><given-names>O. V</given-names></name><name xml:lang="ru"><surname>Дмитриева</surname><given-names>О. В</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stoyanova</surname><given-names>L. G</given-names></name><name xml:lang="ru"><surname>Стоянова</surname><given-names>Л. Г</given-names></name></name-alternatives><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Mechnikov Research Institute of Vaccines and Sera, Moscow, Russia</institution></aff><aff><institution xml:lang="ru">НИИ вакцин и сывороток им. И.И.Мечникова, Москва</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University, Russia</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В.Ломоносова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2013-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2013</year></pub-date><volume>90</volume><issue>3</issue><issue-title xml:lang="en">NO3 (2013)</issue-title><issue-title xml:lang="ru">№3 (2013)</issue-title><fpage>92</fpage><lpage>96</lpage><history><date date-type="received" iso-8601-date="2023-06-09"><day>09</day><month>06</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2013, Pakhomov Y.D., Blinkova L.P., Dmitrieva O.V., Stoyanova L.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2013, Пахомов Ю.Д., Блинкова Л.П., Дмитриева О.В., Стоянова Л.Г.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="en">Pakhomov Y.D., Blinkova L.P., Dmitrieva O.V., Stoyanova L.G.</copyright-holder><copyright-holder xml:lang="ru">Пахомов Ю.Д., Блинкова Л.П., Дмитриева О.В., Стоянова Л.Г.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://microbiol.crie.ru/jour/article/view/13875">https://microbiol.crie.ru/jour/article/view/13875</self-uri><abstract xml:lang="en"><p>Aim. Study strain differences in dynamics of viability and formation of uncultivable forms of Lactococcus lactis. Materials and methods. 3 strains of L. lactis - MSU, 729 and F116 were used in the study. Uncultivable forms were obtained by prolonged incubation of cultures of lactococcus in synthetic medium under conditions of carbohydrate deprivation. Medium was inoculated by cultures grown in Elliker broth, washed by saline and without washing. The populations obtained were incubated at 30°C without mixing for 4 months. Samples of cultures were studied periodically for viability and cultivability. Results. In cultures obtained by using unwashed inoculate active growth of quantity of bacteria in the first days after seeding was noted. Speed of formation of uncultivable forms is the faster the higher the level of metabolic activity of cells in the population. A fact of phenotypic dissociation in lactococcus culture under stress was detected. Conclusion. The speed of formation of uncultivable forms of L. lactis, as well as stability of their existence may probably depend on the strain, cultivation conditions and metabolic activity of cells in the population.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Изучение штаммовых различий динамики жизнеспособности и образования некультивируемых форм Lactococcus lactis. Материалы и методы. В работе использованы 3 штамма L. lactis МГУ, 729 и F116. Некультивируемые формы получали при длительной инкубации культур лактококков в синтетической среде в условиях углеводного голодания. Среду инокулировали культурами, выращенными на бульоне Элликера, отмытыми физраствором и без отмывки. Полученные популяции инкубировали при 30°С без перемешивания в течение 4 месяцев. Пробы культур периодически исследовали на жизнеспособность и высеваемость. Результаты. В культурах, полученных с использованием неотмытого инокулята, наблюдался активный рост численности бактерий в первые дни после посева. Показано, что скорость образования некультивируемых форм тем быстрее, чем выше уровень метаболической активности клеток в популяции. Выявлен факт фенотипической диссоциации в культуре лактококков в стрессовых условиях. Заключение. Скорость образования некультивируемых форм L. lactis, а также стабильность их существования, вероятно, зависит от штамма, условий культивирования и метаболической активности клеток в популяции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Lactococcus lactis</kwd><kwd>uncultivable forms</kwd><kwd>viability</kwd><kwd>strains</kwd><kwd>carbohydrate deprivation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>некультивируемые формы</kwd><kwd>жизнеспособность</kwd><kwd>штаммы</kwd><kwd>углеводное голодание</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Блинкова Л.П., Пахомов Ю.Д., Стоянова Л.Г. Свойства некультивируемых и покоящихся форм микроорганизмов. 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