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Regulation and Action Mechanism of Marine Microorganisms in Ecosystem
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Regulation and Action Mechanism of Marine Microorganisms in Ecosystem

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

Deadline for manuscript submissions: closed (25 February 2023) | Viewed by 6707

Special Issue Editors

Dr. Jin Zhou

E-Mail Website
Guest Editor
Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
Interests: microbial communities and function; regulation mechanisms; ecological process; network interactions; matter cycles
Prof. Dr. Yongyu Zhang

E-Mail Website
Guest Editor
1. Joint Laboratory of Microbial Oceanography, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
2. University of Chinese Academy of Sciences, Beijing, China
Interests: viromics; algae-bacteria-phage interactions; aquatic viral ecology; phage therapy; microbially driven carbon cycle
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Microorganisms (algae, bacteria, archaea, fungi, and viruses) drive major biogeochemical cycles (C, N, P, S, Fe, etc.) and support higher food-webs globally; they are vital components of the marine ecosystem. However, the most important characteristic of microorganisms is that they do not work alone. Their function depends on group effects. A topic of concern is the elucidation of what drives these group effects. These include biological signals, chemical signals and environmental signals. In order to better understand the role of microorganisms in the marine ecosystem, it is necessary to know their behavioral processes and regulatory mechanisms.

This Special Issue focuses on the regulation mechanisms of microbial communities with regard to the marine ecosystem. We seek contributions from authors that include, but are not limited to, the following areas:

(1) The driver factors of microbial communities or functions affecting various marine ecosystems (mangrove, coral reefs, seagrass bed, and salt marshand).

(2) The roles of regulatory signals (such as quorum sensing, hormone, and metabolites, etc.) on microbial behavior (biofilm, mat, assemblage and succession).

(3) Microbial response to a rapidly changing marine environment or ecological events.

(4) Modeling of ecosystems-based actional data and microbiome regulation mechanisms-based multi-omic analyses.

(5) Microbial interactions and their effects on marine environments.

Dr. Jin Zhou
Prof. Dr. Yongyu Zhang
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.

Published Papers (3 papers)

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Research

14 pages, 3540 KiB  
Article
Promoting the Growth of Haematococcus lacustris under High Light Intensity through the Combination of Light/Dark Cycle and Light Color
by Lu Liu, Kezhen Ying, Kebi Wu, Si Tang, Jin Zhou and Zhonghua Cai
J. Mar. Sci. Eng. 2022, 10(7), 839; https://doi.org/10.3390/jmse10070839 - 21 Jun 2022
Cited by 3 | Viewed by 2121
Abstract
The unicellular microalgae Haematococcus lacustris is an astaxanthin-rich organism that is widely used for commercial cultivation, but its main limitation is its relatively low biomass yield. It is widely accepted that the use of appropriate high light intensity could promote algal growth; however, [...] Read more.
The unicellular microalgae Haematococcus lacustris is an astaxanthin-rich organism that is widely used for commercial cultivation, but its main limitation is its relatively low biomass yield. It is widely accepted that the use of appropriate high light intensity could promote algal growth; however, H. lacustris is very sensitive to high-intensity light, and its growth can be readily arrested by inappropriate illumination. To exploit the growth-promoting benefit of higher light intensities while avoiding growth arrestment, we examined the growth of H. lacustris under high light intensities using various light profiles, including different light colors and light/dark cycles. The results show that light color treatments could not alleviate cellular stress under high light intensities; however, it was interesting to find that red light was favored the most by cells out of all the colors. In terms of the light/dark cycle, the 2/2 h light/dark cycle treatment was shown to lead to the highest specific growth rate, which was 46% higher than that achieved in the control treatment (18 μmol/m2·s light intensity, white light). Therefore, in further experiments, the 2/2 h light/dark cycle with red-light treatment was examined. The results show that this combination enabled a significantly higher specific growth rate, which was 66.5% higher than that achieved in the control treatment (18 μmol/m2·s light intensity, white light). These findings offer new strategies for the optimization of illumination for the growth of H. lacustris and lay the foundations for more reasonable lighting utilization for the cultivation of commercially valuable algal species. Full article
(This article belongs to the Special Issue Regulation and Action Mechanism of Marine Microorganisms in Ecosystem)
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15 pages, 3293 KiB  
Article
Response of Size-Fractionated Chlorophyll a to Upwelling and Kuroshio in Northeastern South China Sea
by Danyang Li, Shuang Yang, Yuqiu Wei, Xingzhou Wang, Yingjie Mao, Congcong Guo and Jun Sun
J. Mar. Sci. Eng. 2022, 10(6), 784; https://doi.org/10.3390/jmse10060784 - 06 Jun 2022
Cited by 2 | Viewed by 1669
Abstract
The variability of size-fractionated chlorophyll a (Chl a) biomass and related environmental variables was investigated in a survey conducted in the northeastern South China Sea (NESCS), to assess their responses to upwelling, Kuroshio, and nutrients in the summer of 2017. The depth-weighted [...] Read more.
The variability of size-fractionated chlorophyll a (Chl a) biomass and related environmental variables was investigated in a survey conducted in the northeastern South China Sea (NESCS), to assess their responses to upwelling, Kuroshio, and nutrients in the summer of 2017. The depth-weighted total Chl a concentration varied from 0.057 to 0.496 μg/L. The contribution of size-fractionated Chl a to total Chl a biomass was determined, with the contributions of pico-Chl a (0.2–2 μm), nano-Chl a (2–20 μm), and micro-Chl a (>20 μm) found to be 52.87%, 38.54%, and 8.59%, respectively. We found that nano-Chl a contributes more to total-Chl a than pico-Chl a in areas affected by upwelling. In addition, the results indicated an upward shift in the deep chlorophyll maximum (DCM) content in the upwelling area and the Kuroshio intrusion area. The Chl a biomass was increased in the physical process. Overall, correlation analysis showed that environmental variables (temperature, salinity, phosphate, silicate, nitrate, nitrite, ammonium) significantly influenced the phytoplankton biomass. However, physical processes determined the changes in environmental variables, with upwelling and Kuroshio being the main factors regulating the distribution of Chl a. Full article
(This article belongs to the Special Issue Regulation and Action Mechanism of Marine Microorganisms in Ecosystem)
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15 pages, 1147 KiB  
Article
Hydrogen Sulfide Production with a Microbial Consortium Isolated from Marine Sediments Offshore
by Roberto Briones-Gallardo, Muriel González-Muñoz, Itza García-Bautista, David Valdés-Lozano, Tanit Toledano-Thompson, Erik Polanco-Lugo, Renata Rivera-Madrid and Ruby Valdez-Ojeda
J. Mar. Sci. Eng. 2022, 10(3), 436; https://doi.org/10.3390/jmse10030436 - 17 Mar 2022
Cited by 5 | Viewed by 2231
Abstract
Hydrogen, electric energy production, and metal toxic bioremediation are some of the biotechnological applications of sulfate-reducing organisms, which potentially depend on the sulfide produced. In this study, offshore of Yucatan, the capacity to produce hydrogen sulfide using microbial consortia from marine sediment (SC469, [...] Read more.
Hydrogen, electric energy production, and metal toxic bioremediation are some of the biotechnological applications of sulfate-reducing organisms, which potentially depend on the sulfide produced. In this study, offshore of Yucatan, the capacity to produce hydrogen sulfide using microbial consortia from marine sediment (SC469, PD102, SD636) in batch reactors was evaluated. Kinetic tests were characterized by lactate oxidation to acetate, propionate, CO2 and methane. The inoculum SC469, located in open-ocean, differed strongly in microbial diversity and showed better performance in substrate utilization with the highest hydrogen sulfide production (246 mmolg−1 VSS) at a specific hydrogen sulfide rate of 113 mmol g−1 VSS d−1 with a 0.79 molar ratio of sulfate/lactate. Sulfate-reducing microbial consortia enriched in the laboratory from marine sediments collected offshore in Yucatan and with a moderate eutrophication index, differed strongly in microbial diversity with loss of microorganisms with greater capacity for degradation of organic macromolecules. The sulfate-reducing microorganisms were characterized using Illumina MiSeq technology and were mainly Desulfomicrobium, Clostridium and Desulfobacter. Full article
(This article belongs to the Special Issue Regulation and Action Mechanism of Marine Microorganisms in Ecosystem)
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