Abstract
Strain K001 was isolated from a cyanobacterial culture derived from Abrolhos, a reef bank microbial mat (South Atlantic Ocean—Brazil). Cells of K001 are Gram stain–negative, catalase and oxidase-positive, non-motile, rod-shaped, and with or without appendages. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain K001 belongs to the genus Muricauda. The highest strain K001 16S rRNA gene identity, ANI, and dDDH, respectively, are with M. aquimarina (98.90%, 79.23, 21.60%), M. ruestringensis (98.20%, 80.82, 23.40%), and M. lutimaris (97.86%, 79.23, 22.70%). The strain grows at 15–37 °C and between 0.5 and 10% NaCl. The major fatty acids of strain K001 are iso-C15:0, iso-C15:1 G, iso-C17:0 3-OH, and summed feature 3 (C16:1 ω6c and/or C16:1 ω7c). The polar lipids are represented by phosphatidylethanolamine, three unidentified aminolipids, and three unidentified polar lipids. The major respiratory quinone is MK-6. The G+C content of the DNA of strain K001 is 41.62 mol%. Based on polyphasic analysis of strain K001, it was identified as a novel representative of the genus Muricauda and was named Muricauda brasiliensis sp. nov. The type strain is K001 (=CBMAI 2315T = CBAS 752T).
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Abbreviations
- MA:
-
marine agar DIFCO 2216
- MB:
-
marine broth DIFCO 2216
- MALDI-TOF:
-
matrix-assisted laser desorption/ionization
- MS:
-
mass spectrogram
- dDDH:
-
digital DNA–DNA hybridization
- ANI:
-
average nucleotide identity
- TYGS:
-
Type Strain Genome Server
- MIDI:
-
Sherlock Microbial Identification System
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Acknowledgments
We thank the Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, University of Brasilia (Brazil), for the infrastructure to maintain the cultures and to perform some analyses. We thank the DNA Services Facility in Research Resources Center, University of Illinois at Chicago, Chicago (USA) for the sequencing service. We are grateful to the Microscopy and Microanalysis Laboratory of the University of Brasilia (Brazil), for their collaboration in carrying out the scanning electron microscopy analysis. We thank the Laboratory of Toxinology (Department of Physiological Sciences, Biological Sciences Institute, University of Brasilia, Brazil), the Laboratories of Graduate Program in Genomics Science and Biotechnology (Catholic University of Brasilia, Brasilia, Brazil), Laboratory of Mass Spectrometry (EMBRAPA Genetic Resources and Biotechnology, Brasilia, Brazil), and the Laboratories of the Department of Microbiology (Federal University of Viçosa, Viçosa, Brazil) for the infrastructure to perform part of the experiments of this work. We thank Dr. Manuela da Silva for the K001 microbial collections deposition efforts.
Funding
This research was supported by a grant from BioTecMar (no. 408339/2013-6) of CNPq (Ministry of Science, Technology, Innovations and Communications—Brazil), the Foundation for Research Support of the Federal District (FAP-DF), and Coordination for the Improvement of Higher Education Personnel (CAPES).
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Accession numbers: The GenBank/EMBL/DDBJ accession numbers of K001T strain for the 16S rRNA gene sequence is MN996941, and the draft genome sequence is QBTW00000000.
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Vizzotto, C.S., Peixoto, J., Green, S.J. et al. Muricauda brasiliensis sp. nov., isolated from a mat-forming cyanobacterial culture. Braz J Microbiol 52, 325–333 (2021). https://doi.org/10.1007/s42770-020-00400-3
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DOI: https://doi.org/10.1007/s42770-020-00400-3