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Frontiers in Marine Microbiological Research
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Frontiers in Marine Microbiological Research

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Marine Biology".

Deadline for manuscript submissions: closed (30 December 2022) | Viewed by 7368

Special Issue Editors

Prof. Dr. Zhenming Chi

E-Mail Website
Guest Editor
Department of Marine Biology, Ocean University of China, Qingdao 266003, China
Interests: bioresource; genomics; genome editing; synthetic biology; metabolic engineering and biotechnology of marine microorganisms
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zhe Chi

E-Mail Website
Guest Editor
Department of Marine Biology, Ocean University of China, Qingdao 266003, China
Interests: marine fungi; synthetic biology; bioactive materials
Prof. Dr. Guang-Lei Liu

E-Mail Website
Guest Editor
College of Marine Life Sciences, Ocean University of China, Qingdao 266101, China
Interests: biotechnology; microbiology; metabolic engineering

Special Issue Information

Dear Colleagues,

This Special Issue will mainly present review articles and research papers. The topics include: 1. Resources, biodiversity and distributions of marine bacteria, marine actinomyces, and marine-derived fungi and yeasts; 2. Their ecological functions in marine environments; 3. Their genomes and genome editing techniques; 4. Their metabolites and potential applications; 5. The genetics, synthetic pathways, and regulation of their metabolites.

Prof. Dr. Zhenming Chi
Prof. Dr. Zhe Chi
Prof. Dr. Guang-Lei Liu
Guest Editors

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. Journal of Marine Science and Engineering 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 2600 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 microorganism
  • biodiversity
  • ecological functions
  • metabolites
  • synthetic pathways
  • potential pathways

Published Papers (3 papers)

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Research

20 pages, 8998 KiB  
Article
Antioxidant and Anti-Colorectal Cancer Properties in Methanolic Extract of Mangrove-Derived Schizochytrium sp.
by Kaliyamoorthy Kalidasan, Laurent Dufossé, Gunasekaran Manivel, Poomalai Senthilraja and Kandasamy Kathiresan
J. Mar. Sci. Eng. 2022, 10(3), 431; https://doi.org/10.3390/jmse10030431 - 16 Mar 2022
Cited by 4 | Viewed by 2396
Abstract
This work studied the antioxidant and anti-colorectal cancer properties of a potential strain of thraustochytrids, Schizochytrium sp. (SMKK1), isolated from mangrove leaf litter. The biomass was extracted with methanol and screened for antioxidant activity using six different assays. The extract exhibited the highest [...] Read more.
This work studied the antioxidant and anti-colorectal cancer properties of a potential strain of thraustochytrids, Schizochytrium sp. (SMKK1), isolated from mangrove leaf litter. The biomass was extracted with methanol and screened for antioxidant activity using six different assays. The extract exhibited the highest total antioxidant activity (87.37 ± 1.22%) and the lowest nitric oxide radical (75.12 ± 2.22%), and the activity increased with the concentration of the extract. The methanolic extract was further tested for in vitro cytotoxicity on the colon cancer cell line (HT29). The extract was also analyzed for polyunsaturated fatty acids using GC-MS. The five predominant HTVS-based compounds, viz., arachidonic acid, linolenic acid (alpha-linolenic acid and gamma-linolenic acid), eicosapentaenoic acid, and docosahexaenoic acid, were identified in the extract, and these were tested against the colon cancer protein IGF binding (IGF-1) using the in silico docking method. The results revealed that all the five compounds were capable of destroying the colon oncoprotein responsible for anti-colon carcinogen, based on activation energy and also good hydrogen bond interaction against IGF binding proteins. Of the compounds, docosahexaenoic acid was the most effective, having a docking score of −10.8 Kcal/mol. All the five fatty acids passed the ADMET test and were hence accepted for further clinical trials towards the development of anticancer drugs. Full article
(This article belongs to the Special Issue Frontiers in Marine Microbiological Research)
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12 pages, 1326 KiB  
Article
Occurrence and Distribution of Strains of Saccharomyces cerevisiae in China Seas
by Bai-Chuan Tian, Guang-Lei Liu, Zhe Chi, Zhong Hu and Zhen-Ming Chi
J. Mar. Sci. Eng. 2021, 9(6), 590; https://doi.org/10.3390/jmse9060590 - 29 May 2021
Cited by 4 | Viewed by 2497
Abstract
The yeast Saccharomyces cerevisiae has been widely applied in fermentation industries, chemical industries and biological research and it is widespread in different environments, especially in sugar-rich environments. However, little is known about the occurrence, distribution and roles of S. cerevisiae in marine environments. [...] Read more.
The yeast Saccharomyces cerevisiae has been widely applied in fermentation industries, chemical industries and biological research and it is widespread in different environments, especially in sugar-rich environments. However, little is known about the occurrence, distribution and roles of S. cerevisiae in marine environments. In this study, only 10 strains among all the yeasts isolated from different marine environments belonged to S. cerevisiae. It was found that most of the strains of S. cerevisiae in marine environments occurred in guts, the surface of marine fish and mangrove trees. In contrast, they were not found in seawater and sediments. All the strains of S. cerevisiae isolated from the marine environments had a lower ability to produce ethanol than the highly alcohol-producing yeast Saccharomyces sp. W0 isolated from fermented rice, but the strains 2E00400, 2E00558, 2E00498, 2E00723, 2E00724 could produce higher concentrations of ethanol than any other marine-derived strains of S. cerevisiae obtained in this study. However, some of them had higher ethanol tolerance and higher trehalose content than Saccharomyces sp. W0. In particular, ethanol tolerance of the yeast strain 2E00498 was higher than that of Saccharomyces sp. W0. This may be related to the harsh marine environments from which they were isolated. Such yeast strains with higher alcohol tolerance could be used to further improve the alcohol tolerance of Saccharomyces sp. W0. Full article
(This article belongs to the Special Issue Frontiers in Marine Microbiological Research)
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13 pages, 4452 KiB  
Article
Microbiome-Metabolomics Reveals Prebiotic Benefits of Fucoidan Supplementation in Mice
by Jingyi Yuan, Song Qin, Wenjun Li, Yubing Zhang, Yuting Wang, Xiulian Chang and Lili Li
J. Mar. Sci. Eng. 2021, 9(5), 505; https://doi.org/10.3390/jmse9050505 - 08 May 2021
Cited by 1 | Viewed by 2370
Abstract
Fucoidan is a kind of polysaccharide with antitumor and antioxidant properties, which is mainly isolated from brown algae. Although there are many reports about the prebiotic effects of polysaccharides on hosts, there are few reports about the effects of fucoidan on blood biochemical [...] Read more.
Fucoidan is a kind of polysaccharide with antitumor and antioxidant properties, which is mainly isolated from brown algae. Although there are many reports about the prebiotic effects of polysaccharides on hosts, there are few reports about the effects of fucoidan on blood biochemical indexes, intestinal microbiome, and metabolic function on healthy hosts. We applied 16S rRNA gene amplicon sequencing and LC-MS/MS metabolomics to evaluate the changes in the gut microbiome and metabolite profiles of fucoidan treatment in mice over 10 weeks. Fucoidan treatment modulated lipid metabolism, including significantly decreasing serum triglyceride level in healthy mice. Fucoidan also significantly inhibited serum lipopolysaccharide-binding protein (LBP) concentration, a biomarker of endotoxemia. Correlation analysis further showed that Lactobacillus animalis populations that were enriched by fucoidan demonstrated significantly negative correlations with serum triglyceride level. The abundance of Lactobacillus gasseri and Lactobacillus reuteri, increased by fucoidan supplementation, demonstrated significantly negative correlation with lipopolysaccharide-binding protein levels. Lactobacillus gasseri also demonstrated significantly positive correlations with three tryptophan-related metabolites, including indoleacrylic acid, 3-indoleacrylic acid, and 5-hydroxytryptamine, which were all increased by fucoidan administration. Combined with the previous evidence, the results indicate that fucoidan exerts prebiotic effects, such as lipid metabolism suppression and metabolic endotoxemia suppression, by modulating the abundance of gut microbiota, such as Lactobacillus animalis, Lactobacillus gasseri, and Lactobacillus reuteri, as well as microbiota-dependent metabolites, such as tryptophan-related metabolites. Full article
(This article belongs to the Special Issue Frontiers in Marine Microbiological Research)
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