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Microbial communities of the Mediterranean rocky coast: ecology and biotechnological potential

Kristie Tanner, Esther Molina-Menor, Àngela Vidal-Verdú, Juli Peretó, Manuel Porcar
doi: https://doi.org/10.1101/428243
Kristie Tanner
12
2Darwin Bioprospecting Excellence S.L.
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Esther Molina-Menor
12
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Àngela Vidal-Verdú
12
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Juli Peretó
12
3Departament de Bioquímica i Biologia Molecular, Universitat de València
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Manuel Porcar
12
2Darwin Bioprospecting Excellence S.L.
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Abstract

Microbial communities from harsh environments hold great promise as sources of biotechnologically-relevant strains. In the present work, we have deeply characterized the microorganisms from three different rocky locations of the Mediterranean coast, an environment characterised by being subjected to harsh conditions such as high levels of irradiation and large temperature and salinity fluctuations. Through culture-dependent and culture-independent techniques, we have retrieved a complete view of the ecology and functional aspects of these communities and assessed the biotechnological potential of the cultivable microorganisms. A culture-independent approach through high-throughput 16S rRNA amplicon sequencing revealed that all three locations display very similar microbial communities, suggesting that there is a stable community associated to the sampled region, with Stanieria cyanosphaera, Rubrobacter sp. and the families Flammeovirgaceae, Phyllobacteriaceae, Rhodobacteraceae and Trueperaceae being the most abundant taxa. Furthermore, shotgun metagenomic sequencing results were in concordance with the high-thoughput 16S rRNA, and allowed a description of the eukaryotic and archaeal members of the community, which were abundant in Ascomycota and halotolerant archaea, respectively. The culture-dependent approach yielded a collection of 100 isolates (mainly pigmented), out of which 12 displayed high antioxidant activities, as proved with two in vitro (hydrogen peroxide and DPPH) and an in vivo (model organism C. elegans) assays.

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Posted September 26, 2018.
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Microbial communities of the Mediterranean rocky coast: ecology and biotechnological potential
Kristie Tanner, Esther Molina-Menor, Àngela Vidal-Verdú, Juli Peretó, Manuel Porcar
bioRxiv 428243; doi: https://doi.org/10.1101/428243
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Microbial communities of the Mediterranean rocky coast: ecology and biotechnological potential
Kristie Tanner, Esther Molina-Menor, Àngela Vidal-Verdú, Juli Peretó, Manuel Porcar
bioRxiv 428243; doi: https://doi.org/10.1101/428243

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