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Marine Drugs
Special Issues
Genomic Studies on Marine Extreme Microbes
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Genomic Studies on Marine Extreme Microbes

A special issue of Marine Drugs (ISSN 1660-3397). This special issue belongs to the section "Marine Biotechnology Related to Drug Discovery or Production".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 3857

Special Issue Editor

Dr. Olafur Fridjonsson

E-Mail Website
Guest Editor
Matís Ohf., Reykjavik, Iceland
Interests: biotechnology; genome/metagenome analysis; marine enzymes; marine polysaccharides; bioactive compounds
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Microorganisms represent the majority of the ocean biomass, and they are a fundamental part of marine ecosystems. In recent years, high-throughput sequencing has been used to study the marine biosphere, improving knowledge on the biodiversity and ecosystem dynamics. Analyses of marine microbial genomes/metagenomes have so far revealed novel functions and enormous biodiversity. Nevertheless, we have only scratched the surface, and their extensive biodiversity remains to be explored. Current and future genomic studies will be important as they will contribute to sustainable marine development. Further, they will continue to provide resources for applications in the biotechnology, food/feed, cosmetics, pharmaceutical, and medical sectors.

This Special Issue on “Genomic Studies on Marine Extreme Microbes”, planned for publication in the journal Marine Drugs, will focus on studies on marine bacteria and archaea, providing insight into genome features, revealing core- and pan-genomes, biodiversity, adapted metabolism, microbial interactions, and ecological functions. In addition, articles are invited that describe genome bioprospecting for identification and retrieval of functional clusters or separate genes encoding enzymes of interest.

Dr. Olafur Fridjonsson
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Marine Drugs is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • marine bacteria and archaea
  • extreme marine environment
  • genome/metagenome sequence analysis
  • biodiversity
  • metabolism
  • bioprospecting
  • genome functional clusters
  • adaptations
  • ecological functions
  • sustainable marine development and exploitation

Published Papers (2 papers)

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Research

19 pages, 8245 KiB  
Article
Comparative Genomic Analysis of Cold-Water Coral-Derived Sulfitobacter faviae: Insights into Their Habitat Adaptation and Metabolism
by Shituan Lin, Yunxue Guo, Zixian Huang, Kaihao Tang and Xiaoxue Wang
Mar. Drugs 2023, 21(5), 309; https://doi.org/10.3390/md21050309 - 19 May 2023
Viewed by 1644
Abstract
Sulfitobacter is one of the major sulfite-oxidizing alphaproteobacterial groups and is often associated with marine algae and corals. Their association with the eukaryotic host cell may have important ecological contexts due to their complex lifestyle and metabolism. However, the role of Sulfitobacter in [...] Read more.
Sulfitobacter is one of the major sulfite-oxidizing alphaproteobacterial groups and is often associated with marine algae and corals. Their association with the eukaryotic host cell may have important ecological contexts due to their complex lifestyle and metabolism. However, the role of Sulfitobacter in cold-water corals remains largely unexplored. In this study, we explored the metabolism and mobile genetic elements (MGEs) in two closely related Sulfitobacter faviae strains isolated from cold-water black corals at a depth of ~1000 m by comparative genomic analysis. The two strains shared high sequence similarity in chromosomes, including two megaplasmids and two prophages, while both contained several distinct MGEs, including prophages and megaplasmids. Additionally, several toxin-antitoxin systems and other types of antiphage elements were also identified in both strains, potentially helping Sulfitobacter faviae overcome the threat of diverse lytic phages. Furthermore, the two strains shared similar secondary metabolite biosynthetic gene clusters and genes involved in dimethylsulfoniopropionate (DMSP) degradation pathways. Our results provide insight into the adaptive strategy of Sulfitobacter strains to thrive in ecological niches such as cold-water corals at the genomic level. Full article
(This article belongs to the Special Issue Genomic Studies on Marine Extreme Microbes)
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14 pages, 6073 KiB  
Article
Description and Genomic Characterization of Oceaniferula flavus sp. nov., a Novel Potential Polysaccharide-Degrading Candidate of the Difficult-to-Cultivate Phylum Verrucomicrobiota Isolated from Seaweed
by Meng-Qi Ye, Chuan-Bo Jin, Xin-Jiang Liu, Xin-Yun Tan, Yu-Qi Ye and Zong-Jun Du
Mar. Drugs 2023, 21(1), 31; https://doi.org/10.3390/md21010031 - 29 Dec 2022
Cited by 2 | Viewed by 1828
Abstract
A novel strain, isolate 5K15T, which belongs to difficult-to-cultivate phylum Verrucomicrobiota, was recovered from kelp collected from Li Island, Rongcheng, China. The genome sequence of the strain (genome size 3.95 Mbp) showed the presence of four putative biosynthetic gene clusters [...] Read more.
A novel strain, isolate 5K15T, which belongs to difficult-to-cultivate phylum Verrucomicrobiota, was recovered from kelp collected from Li Island, Rongcheng, China. The genome sequence of the strain (genome size 3.95 Mbp) showed the presence of four putative biosynthetic gene clusters (BGCs), namely, two terpene biosynthetic gene clusters, one aryl polyene biosynthetic cluster, and one type III PKS cluster. Genomic analysis revealed 79 sulfatase-encoded genes, 24 sulfatase-like hydrolase/transferase-encoded genes, and 25 arylsulfatase-encoded genes, which indicated the great potential of 5K15T to degrade sulfated polysaccharides. Comparative analysis of 16S rRNA gene sequence showed that the novel strain was most closely related to Oceaniferula marina N1E253T (96.4%). On the basis of evidence from a polyphasic study, it is proposed that the strain 5K15T (= KCTC 82748T = MCCC 1H00442T = SDUM 810003T) be classified as Oceaniferula flavus sp. nov. The strain has the ability of carbohydrate transport and metabolism. This ability allows it to survive in carbohydrate-rich materials such as kelp. It has the potential to be used in the marine drug industry using seaweed. Full article
(This article belongs to the Special Issue Genomic Studies on Marine Extreme Microbes)
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