The Santorini Volcanic Complex as a Valuable Source of Enzymes for Bioenergy

Author:

Polymenakou Paraskevi N.ORCID,Nomikou ParaskeviORCID,Zafeiropoulos Haris,Mandalakis ManolisORCID,Anastasiou Thekla I.,Kilias StephanosORCID,Kyrpides Nikos C.ORCID,Kotoulas Georgios,Magoulas Antoniοs

Abstract

Marine microbial communities are an untapped reservoir of genetic and metabolic diversity and a valuable source for the discovery of new natural products of biotechnological interest. The newly discovered hydrothermal vent field of Santorini volcanic complex located in the Aegean Sea is gaining increasing interest for potential biotechnological exploitation. The conditions in these environments, i.e., high temperatures, low pH values and high concentration of heavy metals, often resemble harsh industrial settings. Thus, these environments may serve as pools of enzymes of enhanced catalytic properties that may provide benefits to biotechnology. Here, we screened 11 metagenomic libraries previously constructed from microbial mat samples covering the seafloor and the polymetallic chimneys of Kolumbo volcano as well as mat samples from Santorini caldera, to mine, in silico, genes associated with bioenergy applications. We particularly focused on genes encoding biomass hydrolysis enzymes such as cellulases, hemicellulases and lignin-degrading enzymes. A total of 10,417 genes were found for three specific groups of enzymes—i.e., the endoglucanases, the three different beta-glucosidases BGL, bglX and bglB, and the alpha-galactosidases melA, and rafA. Overall, we concluded that the Santorini–Kolumbo volcanic ecosystems constitute a significant resource of novel genes with potential applications in bioenergy that deserve further investigation.

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous)

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Expedition 398 summary;Proceedings of the International Ocean Discovery Program;2024-07-30

2. Expedition 398 Preliminary Report: Hellenic Arc Volcanic Field;International Ocean Discovery Program Preliminary Report;2024-01-16

3. Metagenomics to unravel the microbial biodiversity and biotechnological potential of extreme high salinity environments;Functional Metagenomics;2024

4. Expedition 398 Scientific Prospectus: Hellenic Arc Volcanic Field;International Ocean Discovery Program Scientific Prospectus;2022-03-17

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