Publications by authors named "Dulce Guillen-Matus"

3 Publications

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Six novel species of the obligate marine actinobacterium , sp. nov., sp. nov., sp. nov., sp. nov., sp. nov. and sp. nov., and emended description of the genus .

Int J Syst Evol Microbiol 2020 Aug 23;70(8):4668-4682. Epub 2020 Jul 23.

Departamento de Microbiología y Genética, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain.

Ten representative actinobacterial strains isolated from marine sediments collected worldwide were studied to determine their taxonomic status. The strains were previously identified as members of the genus and shared >99 % 16S rRNA gene sequence similarity to the three currently recognized species. Comparative genomic analyses resulted in the delineation of six new species based on average nucleotide identity and digital DNA-DNA hybridization values below 95 and 70 %, respectively. The species status of the six new groups was supported by a core-genome phylogeny reconstructed from 2106 orthologs detected in 118 publicly available genomes. Chemotaxonomic and physiological studies were used to complete the phenotypic characterization of the strains. The fatty acid profiles contained the major components iso-C, C, iso- and anteiso C. Galactose and xylose were common in all whole-sugar patterns but differences were found between the six groups of strains. Polar lipid compositions were also unique for each species. Distinguishable physiological and biochemical characteristics were also recorded. The names proposed are sp. nov., CNY-202 (=DSM 108615=CECT 9739); sp. nov., CNT-569 (=DSM 108614=CECT 9740); sp. nov., CNY-666 (=DSM 108616=CECT 9738); sp. nov., CNT-150 (=DSM 45549=CECT 9741); sp. nov., CNT-138 (=DSM 45547=CECT 9742); and sp. nov., CNT-148 (=DSM 45548=CECT 9743).
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http://dx.doi.org/10.1099/ijsem.0.004330DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7660244PMC
August 2020

Extending the Salinilactone Family.

Chembiochem 2020 06 10;21(11):1629-1632. Epub 2020 Mar 10.

Institut für Organische Chemie, TU Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.

Five new members of the salinilactone family, salinilactones D-H, are reported. These bicyclic lactones are produced by Salinispora bacteria and display extended or shortened alkyl side chains relative to the recently reported salinilactones A-C. They were identified by GC/MS, gas chromatographic retention index, and comparison with synthetic samples. We further investigated the occurrence of salinilactones across six newly proposed Salinispora species to gain insight into how compound production varies among taxa. The growth-inhibiting effect of this compound family on multiple biological systems including non-Salinispora actinomycetes was analyzed. Additionally, we found strong evidence for significant cytotoxicity of the title compounds.
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http://dx.doi.org/10.1002/cbic.201900764DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7317194PMC
June 2020
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