Article
Environmental Sciences
Fulin Sun, Youshao Wang, Zhaoyu Jiang, Cuici Sun, Yutu Wang, Meilin Wu
Summary: This study explored the abundance and diversity of Roseobacter group DMSP degradation genes in the South China Sea. The results showed a higher abundance of dmdA and dddP genes in surface water above 75 m, and demethylation was the main degradation pathway. High-throughput sequencing analysis revealed a significant layering structure in the distribution of the dmdA gene and high taxonomic diversity in near-surface waters. Different sites and water depths influenced the specificity of dmdA genes in the Roseobacter group. The South China Sea harbors a high diversity of DMSP-degrading bacteria.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Robert Wagner, Luisa Ickes, Allan K. Bertram, Nora Els, Elena Gorokhova, Ottmar Mohler, Benjamin J. Murray, Nsikanabasi Silas Umo, Matthew E. Salter
Summary: Sea spray aerosol particles are recognized as a type of ice-nucleating particles under mixed-phase cloud conditions, with marine microorganisms and organic matter playing a significant role in their heterogeneous ice nucleation ability. Experimental studies have shown that under cirrus conditions, crystalline inorganic salt constituents can also contribute to heterogeneous ice formation at temperatures below 220 K. The density of ice nucleation active surface sites was observed to be lower at temperatures between 220 and 235 K, where only organic matter and/or algal cells and cell debris were found to contribute to ice formation.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Environmental
Lei Xue, David J. Kieber
Summary: Research has identified a new source of acrylate in seawater as a product of the photolysis of dissolved organic matter (DOM). Photochemical production rates are positively correlated with seawater absorption coefficient and are mainly initiated by UV radiation, with UV-B and UV-A contributing to the total production.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Shengwei Zhang, Yanxia Li, Linshu Jiang, Wei Han, Yan Zhao, Xiaoman Jiang, Jing Li, Wenzhuo Shi, Xuelian Zhang
Summary: The use of organic fertilizers in land is an important sustainable method for resource utilization, which can affect the behavior of microplastics in soil. A culture experiment showed that microplastics generally had weak weight loss and specific etiolation on the surface during the culture, especially polyvinyl-chloride and polyhydroxyalkanoates (PHA). The addition of organic fertilizers enriched the bacterial biofilm diversity on multiple microplastic surfaces.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Jianjun Ren, Liujie Deng, Chunyu Li, Liping Dong, Zhijie Li, Jian Zhao, Huhetaoli, Jin Zhang, Dongze Niu
Summary: The hydrothermal treatment is effective in destroying the lactam structure of penicillin, subsequently reducing the absolute copies of antibiotic resistance genes (ARGs) and the relative abundance of bacteria related to pathogens during composting. The bacterial community composition also changes during composting process, with a decrease in symbiotic or pathogenic bacteria and an increase in bacteria related to ureolysis and cellulolysis.
ENVIRONMENTAL POLLUTION
(2021)
Article
Microbiology
Hao Sun, Ji Liu, Siyin Tan, Yanfen Zheng, Xiaolei Wang, Jinchang Liang, Jonathan D. Todd, Xiao-Hua Zhang
Summary: In the Changjiang Estuary, bacterial DMSP producers and their related genes show higher abundance and transcription levels in seawater samples compared to freshwater samples along the salinity gradient, with a more prominent presence in summer than in winter samples. DMSP cleavage is likely the dominant catabolic pathway, with DMSP lyase genes being significantly more abundant than the demethylase gene dmdA. This study serves as a model for future research on microbial DMSP cycling in estuarine environments.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Md Nurul Haider, Md Mehedi Iqbal, Masahiko Nishimura, Eiko Ikemoto, Minoru Ijichi, Kazuhiro Kogure
Summary: Microcosm experiments were conducted to investigate the changes in bacterial growth pattern and community structure by adding labile organic compounds in different oceanic environments. The results showed that the bacterial community structure and growth pattern varied significantly depending on the environmental conditions. Temperature played a crucial role in the growth and succession of bacteria.
SCIENTIFIC REPORTS
(2023)
Article
Microbiology
Ekaterina M. Semenova, Tamara L. Babich, Diyana S. Sokolova, Alexey P. Ershov, Yeva Raievska, Salimat K. Bidzhieva, Alexey L. Stepanov, Maria Korneykova, Vladimir A. Myazin, Tamara N. Nazina
Summary: The development of Arctic regions leads to pollution of marine and coastal environments with oil and petroleum products. This study focused on determining the microbial diversity in seawater, littoral and coastal soil, and isolating oil-degrading bacteria. High-throughput sequencing revealed that bacteria dominated polar communities, while archaea made up less than 2% of the total sequences. The potential functional characteristics of the prokaryotic communities were predicted, indicating their involvement in nitrogen and sulfur cycles as well as the degradation of various hydrocarbons. Furthermore, several bacterial strains capable of growing in seawater and degrading crude oil were isolated.
Article
Microbiology
Marta Royo-Llonch, Pablo Sanchez, Clara Ruiz-Gonzalez, Guillem Salazar, Carlos Pedros-Alio, Marta Sebastian, Karine Labadie, Lucas Paoli, Federico M. Ibarbalz, Lucie Zinger, Benjamin Churcheward, Samuel Chaffron, Damien Eveillard, Eric Karsenti, Shinichi Sunagawa, Patrick Wincker, Lee Karp-Boss, Chris Bowler, Silvia G. Acinas
Summary: Using genome-resolved metagenomics, this study identified uncultured Arctic bacterial and archaeal metagenome-assembled genomes (MAGs) and analyzed their gene expression patterns, habitat preferences, and metabolic potential. The results suggest that marine microorganisms in the Arctic Ocean play a crucial role in climate regulation, and the adaptation of Arctic MAGs to a copiotrophic lifestyle in nutrient-rich waters may influence the ecosystem. The Arctic MAGs catalogue provides insights into polar microorganisms driving global biogeochemical cycles.
NATURE MICROBIOLOGY
(2021)
Article
Environmental Sciences
Jong-Ku Gal, Bo Kyung Kim, Hyoung Min Joo, Chorom Shim, Boyeon Lee, Il-Nam Kim, Jinyoung Jung, Kyung-Hoon Shin, Sun-Yong Ha
Summary: The study investigated the concentrations of n-alkanes and sterols in marine particulate matter in Kongsfjorden in early spring, revealing differences in environmental factors and phytoplankton cell density between the inner and outer fjord. Certain sterols showed correlations with chlorophyll a and POC concentrations, while short-chain alkanes were found to have significantly higher concentrations in the surface layer compared to the subsurface. The distribution of lipid biomarkers in the water column provides important information for understanding the origin and transport of organic matter in the Arctic fjord.
ENVIRONMENTAL RESEARCH
(2022)
Article
Limnology
Michaela A. Mausz, Ruth L. Airs, Joanna L. Dixon, Claire E. Widdicombe, Glen A. Tarran, Luca Polimene, Sarah Dashfield, Rachael Beale, David J. Scanlan, Yin Chen
Summary: Choline and glycine betaine are important nutrient sources and osmolytes for marine microbes, and their degradation can produce climate active trace gases. Sea surface temperature, salinity, and the presence of phytoplankton species significantly influence the uptake of these substrates by prokaryotes.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Natalia Gorska, Beata Schmidt, Jan Marcin Weslawski, Milosz Grabowski, Agata Dragan-Gorska, Joanna Szczucka, Agnieszka Beszczynska-Moller
Summary: Kongsfjorden is being impacted by climate warming, leading to an increase in non-endemic Atlantic fish, which may affect the survival of the native polar cod. Therefore, monitoring the impact of climate change on the fjord fish community is crucial.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Polymer Science
Jobu Tateiwa, Satoshi Kimura, Ken-ichi Kasuya, Tadahisa Iwata
Summary: This study investigated the effect of coating a non-biodegradable polymer on the degradation of a biodegradable polymer film. The results showed that the coated films had less degradation in the presence of enzymes, but the surface-deacetylated coated films could be degraded. Additionally, it was found that the coated films underwent deacetylation in seawater and exposed the underlying material, thereby promoting degradation.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Ecology
Vishnu M. K. Sagar, V. M. Kannan, V. G. Gopikrishna, K. P. Krishnan, Mahesh Mohan
Summary: The arctic regions are facing serious environmental threats related to global warming. Heavy metal concentrations are higher in the Kongsfjorden region, possibly influenced by multiple sources of pollution. Geochemical parameters show enrichment of organic carbon, inorganic carbon, total nitrogen, and total phosphorus in the surface sediments of outer fjord regions, indicating higher risk levels in these areas.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
T. Jabir, P. V. Vipindas, K. P. Krishnan, A. A. Mohamed Hatha
Summary: This study investigated the abundance and diversity of diazotrophs in Arctic fjord sediments, revealing dominance of δ-proteobacterial diazotrophs and significant correlations with TOC/TN ratio and total organic carbon content. Glacier runoff introducing low nitrogen content organic matter enhances the abundance and diversity of nitrogen-fixing microorganisms in the fjord sediments.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
Article
Microbiology
Yin-Xin Zeng, Yong Yu, Hui-Rong Li, Wei Luo
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2015)
Article
Biotechnology & Applied Microbiology
Kewei Cao, Meilin He, Weinan Yang, Bo Chen, Wei Luo, Shanmei Zou, Changhai Wang
JOURNAL OF APPLIED PHYCOLOGY
(2016)
Article
Biodiversity Conservation
Li Liao, Xi Sun, Yinxin Zeng, Wei Luo, Yong Yu, Bo Chen
Article
Biodiversity Conservation
Wei Luo, Huirong Li, Shengquan Gao, Yong Yu, Ling Lin, Yinxin Zeng
Article
Agricultural Engineering
Weinan Yang, Shanmei Zou, Meilin He, Cong Fei, Wei Luo, Shiyan Zheng, Bo Chen, Changhai Wang
BIORESOURCE TECHNOLOGY
(2016)
Article
Marine & Freshwater Biology
Wei Luo, Huirong Li, Kiplagat Kotut, Lothar Krienitz
Article
Marine & Freshwater Biology
Lothar Krienitz, Doris Krienitz, Pawan K. Dadheech, Thomas Huebener, Kiplagat Kotut, Wei Luo, Katrin Teubner, Wilferd D. Versfeld
Article
Microbiology
Yin-Xin Zeng, Yong Yu, Hui-Rong Li, Wei Luo
FRONTIERS IN MICROBIOLOGY
(2017)
Article
Marine & Freshwater Biology
Wei Luo, Kiplagat Kotut, Lothar Krienitz
Article
Plant Sciences
Christina Bock, Wei Luo, Wolf-Henning Kusber, Eberhard Hegewald, Marie Pazoutova, Lothar Krienitz
JOURNAL OF PHYCOLOGY
(2013)
Article
Plant Sciences
Lothar Krienitz, Christina Bock, Kiplagat Kotut, Wei Luo
Article
Biochemistry & Molecular Biology
Haitao Ding, Wei Luo, Yong Yu, Bo Chen
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2019)
Article
Biodiversity Conservation
Wei Luo, Haitao Ding, Huirong Li, Zhongqiang Ji, Kaiyao Huang, Wenyu Zhao, Yong Yu, Yinxin Zeng
Article
Biochemistry & Molecular Biology
Hai-Nan Su, Qian-Min Wang, Chun-Yang Li, Kang Li, Wei Luo, Bo Chen, Xi-Ying Zhang, Qi-Long Qin, Bai-Cheng Zhou, Xiu-Lan Chen, Yu-Zhong Zhang, Bin-Bin Xie
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2017)