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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Microbiology</journal-id><journal-title-group><journal-title xml:lang="en">Microbiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Микробиология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0026-3656</issn><issn publication-format="electronic">3034-5464</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">698755</article-id><article-id pub-id-type="doi">10.7868/S3034546425060102</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>EXPERIMENTAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Analysis of Biofilms Formed by Bacteria of the Genus Azospirillum in Soil</article-title><trans-title-group xml:lang="ru"><trans-title>АНАЛИЗ БИОПЛЕНОК, СФОРМИРОВАННЫХ БАКТЕРИЯМИ РОДА AZOSPIRILLUM, В ПОЧВЕ<sup>1</sup></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shirokov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Широков</surname><given-names>А. А.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mokeev</surname><given-names>D. I.</given-names></name><name xml:lang="ru"><surname>Мокеев</surname><given-names>Д. И.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Volokhina</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Волохина</surname><given-names>И. В.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yevstigneeva</surname><given-names>S. S.</given-names></name><name xml:lang="ru"><surname>Евстинеева</surname><given-names>С. С.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Borisov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Борисов</surname><given-names>И. В.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Filip’echeva</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Филипьечева</surname><given-names>Ю. А.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Matora</surname><given-names>L. Yu.</given-names></name><name xml:lang="ru"><surname>Матора</surname><given-names>Л. Ю.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Muratova</surname><given-names>A. Yu.</given-names></name><name xml:lang="ru"><surname>Муратова</surname><given-names>А. Ю.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Petrova</surname><given-names>L. P.</given-names></name><name xml:lang="ru"><surname>Петрова</surname><given-names>Л. П.</given-names></name></name-alternatives><email>petrova_lp@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shelud’ko</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Шелудько</surname><given-names>А. В.</given-names></name></name-alternatives><email>shel71@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Federal Research Center, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биохимии и физиологии растений и микроорганизмов, ФИЦ “Саратовский научный центр РАН” (ИБФРМ РАН)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Saratov State Medical University named after V.I. Razumovsky, Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">Саратовский государственный медицинский университет имени В.И. Разумовского Министерства здравоохранения Российской Федерации</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-16" publication-format="electronic"><day>16</day><month>12</month><year>2025</year></pub-date><volume>94</volume><issue>6</issue><issue-title xml:lang="en">VOL 94, NO6 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 94, №6 (2025)</issue-title><fpage>605</fpage><lpage>623</lpage><history><date date-type="received" iso-8601-date="2025-12-16"><day>16</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-12-16"/></permissions><self-uri xlink:href="https://snv63.ru/0026-3656/article/view/698755">https://snv63.ru/0026-3656/article/view/698755</self-uri><abstract xml:lang="en"><p>Strains A. baldaniorum Sp245 and A. brasilense Sp7 formed mono- and multilayer biofilms on the surface of wheat roots both under sterile hydroponic conditions and in non-sterile soil. Derivatives of these strains carrying a plasmid with the gene of the fluorescent protein GFP were used to visualize bacterial biofilms in situ. Azospirillum biofilms/their matrix components bound to soil particles, forming aggregates in the soil, which affected not only its structure, but also the adhesion of the soil to plant roots. Under short-term drought conditions, bacteria in biofilms formed on the surface of the root epidermis and root hairs produced GFP in the root system of plants inoculated with Azospirillum. Sowings from the roots of these plants showed that GFP<sup>+</sup> colonies are Azospirillum. Inoculation with strains Sp7 and Sp245 positively affected the relative water content in the leaves of plants exposed to conditions simulating short-term drought in the soil.</p></abstract><trans-abstract xml:lang="ru"><p>Штаммы Azospirillum baldaniorum Sp245 и A. brasilense Sp7 формировали моно- и многослойные биопленки на поверхности корней пшеницы, как в стерильных условиях гидропоники, так и в условиях нестерильной почвы. Для визуализации бактериальных биопленок in situ использовали производные этих штаммов, несущие плазмиду с геном флуоресцирующего белка GFP. Биопленки азоспирилл/компоненты их матрикса связывались с почвенными частицами, образуя в почве агрегаты, что влияло не только на ее структуру, но и на сцепление почвы с корнями растений. В условиях краткосрочной засухи в корневой системе растений, инокулированных азоспириллами, бактерии в биопленках, сформированных на поверхности эпидермиса корня и корневых волосков, продуцировали GFP. Высевы с корней этих растений показали, что колонии GFP<sup>+</sup> являются азоспириллами. Инокуляция штаммами Sp7 и Sp245 положительно влияла на относительное содержание воды в листьях растений, находящихся в условиях, моделирующих краткосрочную засуху в почве.</p></trans-abstract><kwd-group xml:lang="en"><kwd>biofilms</kwd><kwd>microstructure</kwd><kwd>soil</kwd><kwd>Azospirillum</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>биопленки</kwd><kwd>микроструктура</kwd><kwd>почва</kwd><kwd>Azospirillum</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Баймиев Ан.Х., Ямиданов Р.С., Матниязов Р.Т., Благова Д.К., Баймиев Ал.Х., Чемерис А.В. Получение флуоресцентно меченых штаммов клубеньковых бактерий дикорастущих бобовых для их детекции in vivo и in vitro // Мол. биология. 2011. Т. 45. 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