Sporulation of Bacillus subtilis in binary cultures with ultramicrobacteria

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• 作者：A. P. Shorokhova ; N. E. Suzina ; V. N. Polivtseva ; T. Z. Esikova ; D. V. Ross…
• 关键词：ultramicrobacteria ; cell ultrastructure ; biodiversity of ultramicrobacteria ; inhibition of bacterial sporulation ; intermicrobial parasitism
• 刊名：Microbiology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：86
• 期：1
• 页码：42-48
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Microbiology; Medical Microbiology;
• 出版者：Pleiades Publishing
• ISSN：1608-3237
• 卷排序：86

文摘

The effect of ultramicrobacterial epibionts of the genera Kaistia (strain NF1), Chryseobacterium (strain NF4), and Stenotrophomonas (strain FM3) on the process of sporulation of Bacillus subtilis ATCC 6633 was studied. The investigated strains of ultramicrobacteria (UMB) were found to inhibit the sporulation process of B. subtilis ATCC 6633 in binary mixed cultures, exhibiting a 3-day delay of the onset of sporulation compared to the control one, an extended period of the prospore maturation, formation of the fraction of immature spores, and development of ultrastructural defects in many endospores. Thus, investigation of binary mixed cultures of B. subtilis and UMB revealed that, apart from suppression of reproduction and lysis of host vegetative cells, inhibition of spore formation and destruction of endospores was yet another feature of intermicrobial parasitism. The UMB parasites of the studied genera are assumed to participate in the regulation of development and reproduction of B. subtilis in natural habitats of this spore-forming bacterium.