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JMSE
Special Issues
Response of Marine Microorganisms to Changing Environment
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Response of Marine Microorganisms to Changing Environment

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 (5 September 2023) | Viewed by 5191

Special Issue Editor

Dr. Qilong Qin

E-Mail Website
Guest Editor
State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266000, China
Interests: marine microorganisms; communities diversity; genomic evolution; adaptation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The ocean is the largest ecosystem on Earth and contains large amounts of various microorganisms. These marine microorganisms play important roles in energy transfer and organic matter cycling in the ocean and contribute fundamentally to the stability of the oceanic ecosystem. The marine environment undergoes continuous change due to natural and/or anthropic influences. It is interesting and important to understand how marine microorganisms will respond to the change of environmental factors. This Special Issue aims to investigate the responses of marine microorganisms (e.g., community composition and physiological function) to changed environmental conditions (controlled and naturally occurred). New methods and concepts are encouraged. All article types are welcome.

Dr. Qilong Qin
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. 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 microorganisms
  • community
  • diversity
  • function
  • assembly
  • metagenomic

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Published Papers (2 papers)

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Research

18 pages, 14589 KiB  
Article
The Symbiodiniaceae and Bacterial Dynamic Composition of the Coral Echinopora gemmacea on Wuzhizhou Island
by Zhuoran Li, Yushan Li, Wentao Zhu, Xiangbo Liu, Rou-Wen Chen, Aimin Wang and Xiubao Li
J. Mar. Sci. Eng. 2023, 11(12), 2262; https://doi.org/10.3390/jmse11122262 - 29 Nov 2023
Viewed by 1144
Abstract
Coral’s susceptibility to bleaching is determined by the strength of the intricate mutual relationships among coral symbionts. However, there is limited knowledge about how the symbiotic members of the scleractinian coral Echinopora gemmacea respond to changes in their surrounding environmental conditions. In this [...] Read more.
Coral’s susceptibility to bleaching is determined by the strength of the intricate mutual relationships among coral symbionts. However, there is limited knowledge about how the symbiotic members of the scleractinian coral Echinopora gemmacea respond to changes in their surrounding environmental conditions. In this study, we conducted a survey of seawater characteristics in the south and north zones of Wuzhizhou (WZZ) Island, measured symbiotic microalgal density and chlorophyll-a content in the corals, and performed metabarcoding of the Symbiodiniaceae and bacteria communities within coral tissue. Our findings demonstrated that the seawater in the north zone of WZZ Island had higher levels of turbidity, temperature, salinity, and dissolved oxygen content compared to the south zone. This indicated that the corals in the two zones were subjected to distinctive environmental conditions. Analysis of the Symbiodiniaceae composition revealed that Cladocopium sp. C1 and Cladocopium sp. C17 were the dominant species in the southern E. gemmacea, whereas Durusdinium sp. D1a and Cladocopium sp. C17 prevailed in the northern E. gemmacea. Consequently, symbiotic microalgal density and chlorophyll-a content were diminished in the northern E. gemmacea. Furthermore, correlation network analysis revealed the presence of intricate bacterial interactions that potentially mediate coral’s adaptation to environmental stress. This study provides insights into the differences in symbiotic members, including Symbiodiniaceae and bacteria, within E. gemmacea, and contributes to fundamental knowledge for coral conservation efforts. Full article
(This article belongs to the Special Issue Response of Marine Microorganisms to Changing Environment)
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12 pages, 1744 KiB  
Article
Seasonal and Spatial Variations of Bacterial Community Structure in the Bailang River Estuary
by Wenxun Dong, Zhengguo Cui, Mengjuan Zhao and Junfeng Li
J. Mar. Sci. Eng. 2023, 11(4), 825; https://doi.org/10.3390/jmse11040825 - 13 Apr 2023
Cited by 3 | Viewed by 1702
Abstract
Planktonic cells are a vital part of biogeochemical nutrient cycling and play an extremely important role in maintaining the balance of water ecosystems. In this study, surface water samples were collected in three seasons (spring, summer, and winter) 10 km along the estuary [...] Read more.
Planktonic cells are a vital part of biogeochemical nutrient cycling and play an extremely important role in maintaining the balance of water ecosystems. In this study, surface water samples were collected in three seasons (spring, summer, and winter) 10 km along the estuary of the Bailang River to assess the relationship between environmental factors and the bacterial community structure, which was determined by high-throughput sequencing. The physicochemical properties of the samples, including the pH, salinity, and inorganic nitrogen (NH4+, NO3−, and NO2−), exhibited significant seasonal variations, and the diversity and structure of the bacterial community also varied seasonally. A redundancy analysis showed that the inorganic nitrogen (NH4+, NO3−, NO2−), pH, and salinity are key factors in shaping the bacterial community composition. Among the different seasons, the core taxa of bacterial communities were the same, and Actinobacteria, Cyanobacteria, and Proteobacteria were the key components during the three seasons. The bacterial diversity and structure also varied seasonally, but there were no significant differences in spatial composition. Based on a phylogenetic investigation of communities by reconstruction of unobserved states analysis, nitrogen-cycle-related processes include four dominant processes: nitrogen mineralization, nitrogen fixation, dissimilatory nitrate reduction, and denitrification. These results suggest that the bacterial community structure in the waters of the Bailang River estuary is subject to seasonal rather than spatial variation. These findings provide new evidence for studies of the seasonal variation of bacterial communities in estuaries. Full article
(This article belongs to the Special Issue Response of Marine Microorganisms to Changing Environment)
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