Studies on Marine Microbial Ecology (2nd Edition)

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 (15 December 2024) | Viewed by 930

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Korea Research Institute of Bioscience and Biotechnology, Yusong, Jeongeup-si, Republic of Korea
Interests: fungal genetics; microbial diversity; fungal ecology
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Special Issue Information

Dear Colleagues,

Marine microorganisms originate from the marine environment and exhibit remarkable survival capabilities, thriving and reproducing under extreme conditions such as low temperatures, high pressures, elevated temperatures, and high salinity. This category includes various microorganisms, such as eukaryotic organisms like fungi, algae, and protozoa, as well as prokaryotic entities like marine bacteria, marine actinomycetes, and marine cyanobacteria. Additionally, cell-free agents such as viruses are also part of this marine microbial domain. Notably, microorganisms constitute a vital component of marine ecosystems, engaging in intricate interactions with their surroundings. Investigating the interplay between marine microorganisms and marine ecology holds immense potential for enhancing marine biodiversity and safeguarding marine ecosystems. This Special Issue also explores the factors affecting the distribution of marine microorganisms, such as physicochemical variables, anthropogenic pollutants, and biological interactions, along with advancements in methodologies for studying these microorganisms.

This Special Issue aims to provide a comprehensive overview of the environmental factors that shape the distribution of marine microorganisms, including the roles of temperature, salinity, and nutrient availability. It also examines the impact of human activities, such as pollution and habitat destruction, on marine microbial communities and their ecological functions. Furthermore, this Special Issue highlights the latest technological advancements and methodological approaches that have revolutionized the study of marine microorganisms, from genomic sequencing to in situ observation techniques. We also seek to uncover the complex interactions between marine microorganisms and their environment, focusing on how these interactions influence ecosystem health and resilience. Contributions are invited that address the adaptive mechanisms of marine microorganisms to extreme environmental conditions, such as high pressure and low light, and their implications for microbial ecology and evolution. This Special Issue will feature interdisciplinary studies that integrate microbiology, oceanography, and environmental science to advance our understanding of marine microbial dynamics. Emphasis will also be placed on novel biotechnological applications of marine microorganisms, including their potential in bioremediation and the production of bioactive compounds. We encourage submissions that provide insights into the diversity and functionality of marine microbial communities across different oceanic regions and depths.

In light of these considerations, the primary objective of this Special Issue is to assemble contributions centered around the following focal areas: the ecological evolution of novel marine microorganisms; the extent of marine microbial diversity; the intricate interrelationships between the marine environment and microorganisms; and the dynamics of planktonic microorganisms. Due to the success of this topic, we are pleased to announce the second edition of this Special Issue.

Dr. Zhun Li
Dr. Mi-Kyung Lee
Guest Editors

Manuscript Submission Information

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Keywords

  • novel marine microorganisms (marine bacteria, marine actinomycetes, and marine phytoplankton)
  • marine microbial ecology
  • marine pollution
  • microbial culture engineering
  • microbial diversity
  • anthropogenic pollutants
  • biological interactions
  • biotechnology

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Published Papers (1 paper)

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Research

13 pages, 2181 KiB  
Article
Resting Cysts of the Toxic Dinoflagellate Gymnodinium catenatum (Dinophyceae) Ubiquitously Distribute along the Entire Coast of China, with Higher Abundance in Bloom-Prone Areas
by Xiaohan Liu, Zhe Tao, Yuyang Liu, Zhangxi Hu, Yunyan Deng, Lixia Shang, Po-Teen Lim, Zhaoyang Chai and Ying-Zhong Tang
J. Mar. Sci. Eng. 2024, 12(9), 1651; https://doi.org/10.3390/jmse12091651 - 14 Sep 2024
Viewed by 649
Abstract
Blooms of Gymnodinium catenatum have occurred occasionally in different areas of China and caused tremendous economic loss and even threatened human health. Not only is G. catenatum an important harmful-algal-bloom (HAB)-causing species, but also the only gymnodinioid dinoflagellate known to produce paralytic shellfish [...] Read more.
Blooms of Gymnodinium catenatum have occurred occasionally in different areas of China and caused tremendous economic loss and even threatened human health. Not only is G. catenatum an important harmful-algal-bloom (HAB)-causing species, but also the only gymnodinioid dinoflagellate known to produce paralytic shellfish poisoning toxins (PSTs). Due to the germination of resting cysts, which often initiates blooms, the distribution and abundance of cysts in sediments and particularly the confirmation of cyst beds are important information for understanding and predicting dinoflagellate blooms. In this research, 199 sediment samples were collected from China’s coastal seas, ranging from the Beidaihe in the Bohai Sea (BS) to the southernmost sample from the Nansha Islands of the South China Sea (SCS). TaqMan quantitative PCR (qPCR) assays with species-specific primers and probes were developed to specifically detect the distribution and abundance of cysts in the 199 samples. The detection revealed that G. catenatum cysts were widely present in the sediments (126 of the 199 samples), with 93.55%, 74.65%, 42.37%, and 50% of the samples detected positively from the BS, YS, ECS and SCS, respectively, and covering the vast sea area from Nansha Islands to the Beidaihe area. The single-cyst morpho-molecular identification in the samples from Beidaihe confirmed the existence of G. catenatum cysts in the BS, and the positive detections of G. catenatum cysts using the qPCR methods. While G. catenatum cysts were widely distributed in all four seas of China, the average abundance was relatively low (1.0 cyst per gram of wet sediment). Three samples from the East China Sea (ECS), however, contained G. catenatum cysts at a relatively higher level (23 cysts g−1 wet sediment) than other sea areas, suggesting a pertinence of cyst abundance to the frequent occurrences of G. catenatum blooms in the area during recent years. Collectively, for G. catenatum being such an important toxic and HAB-causing species globally, the ubiquitous distribution of its cysts along the coastal waters of China and higher abundance in the bloom-prone areas warns us of a risk that cyst beds, although currently low in abundance, may seed HABs in any and many sea areas of China at any forthcoming year, and particularly those areas with records of frequent HABs outbreaks in the past. Full article
(This article belongs to the Special Issue Studies on Marine Microbial Ecology (2nd Edition))
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