Reclassification of Micrococcus aloeverae and Micrococcus yunnanensis as later heterotypic synonyms of Micrococcus luteus

Huang, Chien‐Hsun; Wang, Chunlin; Liou, Jong‐Shian; Lee, Ai-Yun; Blom, Jochen; Huang, Lina; Watanabe, Koichi

doi:10.1099/ijsem.0.003654

Cited by 19 publications

(14 citation statements)

References 29 publications

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“…This genus is commonly retrieved in European caves and the two most frequent species identified were Micrococcus yunnanensis and M. luteus [7,[20][21][22][23]. However, Huang et al [24] proposed M. yunnanensis as later heterotypic synonym of M. luteus, based on the study of the whole-genome sequencing. In fact, both species are phenotypically and genotypically closely related and were differentiated by DNA-DNA hybridization, although for operative purposes were distinguished by their 16S rRNA sequences and the oxidase test, negative for M. yunnanensis and positive for M. luteus.…”

Section: Discussionmentioning

confidence: 99%

“…In fact, both species are phenotypically and genotypically closely related and were differentiated by DNA-DNA hybridization, although for operative purposes were distinguished by their 16S rRNA sequences and the oxidase test, negative for M. yunnanensis and positive for M. luteus. Huang et al [24], in addition to the reclassification as a single species, further considered M. luteus as oxidase-variable.…”

Section: Discussionmentioning

confidence: 99%

“…The wide distribution of M. yunnanensis in caves relies on the ability to grow at temperature as low as 4 °C (with an optimal growth temperature of 28°C), while M. luteus requires higher temperatures and the optimal growth temperature is 37°C. In their reclassification of Micrococcus species, Huang et al [24] extended the temperature range of M. luteus from 4 to 45°C.…”

Section: Discussionmentioning

confidence: 99%

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Airborne bacteria in show caves from Southern Spain

Domínguez-Moñino¹,

Jurado²,

Candelera³

et al. 2021

Microb Cell

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This work presents a study on the airborne bacteria recorded in three Andalusian show caves, subjected to different managements. The main differences within the caves were the absence of lighting and phototrophic biofilms in Cueva de Ardales, the periodic maintenance and low occurrence of phototrophic biofilms in Gruta de las Maravillas, and the abundance of phototrophic biofilms in speleothems and walls in Cueva del Tesoro. These factors conditioned the diversity of bacteria in the caves and therefore there are large differences among the CFU m-3, determined using a suction impact collector, equipment widely used in aerobiological studies. The study of the bacterial diversity, inside and outside the caves, indicates that the air is mostly populated by bacteria thriving in the subterranean environment. In addition, the diversity seems to be related with the presence of abundant phototrophic biofilms, but not with the number of visitors received by each cave.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Airborne bacteria in show caves from Southern Spain

Domínguez-Moñino¹,

Jurado²,

Candelera³

et al. 2021

Microb Cell

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“…Nevertheless, the low DNA–DNA relatedness could occur as a result of high experimental error [35]. Furthermore, such minor phenotypic differences are also noted in previous studies [39–41], that could arise either due to different habitats or intraspecies differences. The genetic markers for osmotic stress, respiration, fatty acids and lipids were similar (Table S7) suggesting that minor phenotypic differences could arise due to their different habitats such as soil and haddock tissue, which may lead to expression of different transcriptional modulators, thus affecting the phenotypes.…”

Section: Full-textmentioning

confidence: 84%

Genome based reclassification of Deinococcus swuensis as a heterotypic synonym of Deinococcus radiopugnans

Lakra

Verma

Talwar

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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Deinococcus species are widely studied due to their utility in bioremediation of sites contaminated with radioactive elements. In the present study, we re-evaluated the taxonomic placement of two species of the genus Deinococcus namely D. swuensis DY59T and D. radiopugnans ATCC 19172T based on whole genome analyses. The 16S rRNA gene analysis revealed a 99.58% sequence similarity between this species pair that is above the recommended threshold value for species delineation. These two species also clustered together in both the 16S rRNA gene and core genome based phylogenies depicting their close relatedness. Furthermore, more than 98% of genes were shared between D. swuensi s DY59T and D. radiopugnans ATCC 19172T. Interestingly, D. swuensis DY59T and D. radiopugnans ATCC 19172T shared high genome similarity in different genomic indices. They displayed an average nucleotide identity value of 97.63%, an average amino acid identity value of 97% and a digital DNA–DNA hybridization value equal to 79.50%, all of which are well above the cut-off for species delineation. Altogether, based on these evidences, D. swuensis DY59T and D. radiopugnans ATCC 19172T constitute a single species. Hence, as per the priority of publication, we propose that Deinococcus swuensis Lee et al. 2015 should be reclassified as a later heterotypic synonym of Deinococcus radiopugnans .

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“…These three bacterial taxa are known skin commensals providing several beneficial properties for healthy-looking skin, such as the secretion of antimicrobial peptides by S. epidermidis and S. hominis. [23][24][25] M. yunnanensis belongs to the Micrococcus luteus group as both are phenotypically and genotypically closely related [26]. This species is known to be able to withstand high levels of UV radiation and to produce carotenoids providing important antioxidant and antibacterial activities [27,28].…”

Section: Discussionmentioning

confidence: 99%

5‐α reductase inhibition by Epilobioum fleischeri extract modulates facial microbiota structure

Sfriso

Claypool

Roche³

et al. 2022

Intern J of Cosmetic Sci

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Background: Facial skin is a particularly complex environment made of different skin types such as sebaceous (forehead) and dry (cheeks). The skin microbiota composition on different facial sites has not yet been addressed. Methods:We conducted a 4-week-long, single-centre, randomized and placebocontrolled clinical study involving 23 Caucasian females. We assessed both bacterial composition on five different facial areas and the microbiome modulatory effects resulting from the topical application of a plant extract (Epilobium fleischeri). Skin microbiome samples were collected before and after 4 weeks of product application. Microbiota profiling was performed via 16S rRNA gene sequencing, and relative abundance data were used to calculate differentials via a multinomial regression model. Results:Via 'reference frames', we observed shifts in microbial composition after 4 weeks of twice-daily product application and identify certain microbiota species, which were positively associated with the application of the product containing the Epilobium fleischeri extract. Staphylococcus hominis, Staphylococcus epidermidis, and Micrococcus yunnanensis appeared to be significantly enriched in the final microbiota composition of the active treatment group. Conclusion:Facial skin was found to be colonized by an heterogenous microbiota, and the Epilobium fleischeri extract had a modulatory effect on commensal bacteria on the different facial sites.

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Reclassification of Micrococcus aloeverae and Micrococcus yunnanensis as later heterotypic synonyms of Micrococcus luteus

Cited by 19 publications

References 29 publications

Airborne bacteria in show caves from Southern Spain

Airborne bacteria in show caves from Southern Spain

Genome based reclassification of Deinococcus swuensis as a heterotypic synonym of Deinococcus radiopugnans

5‐α reductase inhibition by Epilobioum fleischeri extract modulates facial microbiota structure

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