Identification of genus Deinococcus strains by PCR detection using the gyrB gene and its extension to Bacteria domain.

Autor: Yoon H; Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea., Lee HH; Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea., Noh HS; Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea., Lee SJ; Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea. Electronic address: sungjaelee@khu.ac.kr.
Jazyk: angličtina
Zdroj: Journal of microbiological methods [J Microbiol Methods] 2024 Aug; Vol. 223, pp. 106980. Date of Electronic Publication: 2024 Jun 25.
DOI: 10.1016/j.mimet.2024.106980
Abstrakt: In radiation-resistant bacteria belonging to the genus Deinococcus, transposition events of insertion sequences (IS elements) leading to phenotypic changes from a reddish color to white were detected following exposure to gamma irradiation and hydrogen peroxide treatment. This change resulted from the integration of IS elements into the phytoene desaturase gene, a key enzyme in the carotenoid biosynthesis pathway. To facilitate species identification and distinguish among Deinococcus strains, the gyrB gene encoding the B subunit of DNA gyrase was utilized. The s gnificance of the gyrB gene is well recognized not only in genome replication through the regulation of supercoiling but also in phylogenetic analysis providing support for 16S rRNA-based identification. Its mutation rate surpasses that of the 16S rRNA gene, offering greater resolution between closely related species, particularly those exhibiting >99% similarity. In this study, phylogenetic analysis was conducted comparing the 16S rRNA and gyrB gene sequences of Deinococcus species. Species-specific and genus-specific primers targeting Deinococcus species were designed and experimentally validated for selective amplification and rapid identification of the targeted species. This approach allows for the omission of 16S rRNA sequencing in the targeted Deinococcus species. Therefore, the gyrB gene is useful for identifying bacterial species and genus-level detection from individual microbes or microbial consortia using specialized primer sets for PCR amplification.
Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest.
(Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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