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Abstract— <p>The physiology and taxonomic structure of prokaryotic communities in various volcanogenic deposits have been studied. The samples of fumarole and pyroclastic deposits, as well as primitive soils (Leptic Cryosols), have been collected in such poorly studied areas as fumarole fields on the summits of volcanoes in Kamchatka, the Caucasus, and Japan, as well as on cinder fields on the slopes of a volcanic structure in Antarctica. In this work, a microbiological characterization of culturable aerobic heterotrophic bacteria from the fumarole field of the Hertz crater on the summit of Ushkovsky Volcano (Kamchatka, Russia) is presented for the first time. A collection of isolates has been created, including 105 strains of aerobic heterotrophic bacteria representatives of <i>Bacillus, Cupriavidus, Labedella, Microbacterium, Paenibacillus, Peribacillus, Plantibacter, Pseudomonas,</i> and <i>Staphylococcus</i> genera. Also, for the first time, an analysis of the physiological characteristics of isolated strains, such as temperature conditions of cultivation, pH of the medium, and NaCl concentration has been performed. Our study suggests that tolerance to two or more stress factors is characteristic of 57.1% of isolated strains, and tolerance to all three factors is characteristic of 24.8% of isolated strains.</p>

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Physiological Characteristics of Culturable Prokaryotic Communities of Fumarole Fields in the Permafrost Zone

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • A. N. Kasatkina,
  • A. A. Abramov,
  • A. A. Belov

摘要

Abstract—

The physiology and taxonomic structure of prokaryotic communities in various volcanogenic deposits have been studied. The samples of fumarole and pyroclastic deposits, as well as primitive soils (Leptic Cryosols), have been collected in such poorly studied areas as fumarole fields on the summits of volcanoes in Kamchatka, the Caucasus, and Japan, as well as on cinder fields on the slopes of a volcanic structure in Antarctica. In this work, a microbiological characterization of culturable aerobic heterotrophic bacteria from the fumarole field of the Hertz crater on the summit of Ushkovsky Volcano (Kamchatka, Russia) is presented for the first time. A collection of isolates has been created, including 105 strains of aerobic heterotrophic bacteria representatives of Bacillus, Cupriavidus, Labedella, Microbacterium, Paenibacillus, Peribacillus, Plantibacter, Pseudomonas, and Staphylococcus genera. Also, for the first time, an analysis of the physiological characteristics of isolated strains, such as temperature conditions of cultivation, pH of the medium, and NaCl concentration has been performed. Our study suggests that tolerance to two or more stress factors is characteristic of 57.1% of isolated strains, and tolerance to all three factors is characteristic of 24.8% of isolated strains.