Разнообразие культивируемых бактерий-деструкторов монохлорированных бифенилов в почвах охраняемого ландшафта

Автор: Королев Н.А., Кирьянова Т.Д., Егорова Д.О.

Журнал: Вестник Пермского университета. Серия: Биология @vestnik-psu-bio

Статья в выпуске: 3, 2024 года.

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В работе использованы аэробные бактериальные штаммы из рабочей коллекции лаборатории микробиологии техногенных экосистем «ИЭГМ УрО РАН», выделенные ранее из почв охраняемого ландшафта ООПТ Осинская лесная дача. Наибольший деструктивный потенциал в отношении бифенила и его хлорированных производных выявлен у 16 штаммов. На основании анализа нуклеотидной последовательности гена 16S рРНК установлена филогенетическая принадлежность данных штаммов. Показано, что доля представителей рода Achromobacter составила 56.25%, Rhodococcus - 18.75%, Pseudomonas - 12.5%, Delftia и Stenotrophomonas - по 6.25%. Штаммы родов Achromobacter и Rhodococcus осуществляли деструкцию 2-хлор-, 3-хлор- и 4-хлорированных бифенилов с эффективностью 13-100% и 43-100% соответственно. Эффективность деструкции монохлорбифенилов для представителей рода Pseudomonas составляла выше 80%, за исключением 69%-го разложения 4-хлорбифенила штаммом Pseudomonas sp. Osa 27. Штамм Stenotrophomonas sp. Osa 13 наиболее активно (71%) разлагал 4-хлорбифенил, но проявлял наименьшую активность (34%) в отношении 3-хлорированного бифенила. Штамм Delftia sp. Osa 20 осуществлял полную деструкцию 3-хлор- и 4-хлорбифенилов, но не осуществлял трансформацию 2-хлорбифенила. Таким образом, аэробные бактериальные культуры, выделенные из почв охраняемого ландшафта, обладают способностью окислять сложные ароматические соединения, опасные для окружающей среды.

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Монохлорированные бифенилы, achromobacter, rhodococcus, pseudomonas, stenotrophomonas, delftia, биодеструкция

Короткий адрес: https://sciup.org/147246119

IDR: 147246119 | DOI: 10.17072/1994-9952-2024-3-285-299

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