Article
Engineering, Marine
Janardan Ausuri, Filippo Dell'Anno, Giovanni Andrea Vitale, Fortunato Palma Esposito, Valerio Funari, Gianluigi Franci, Massimiliano Galdiero, Gerardo Della Sala, Pietro Tedesco, Daniela Coppola, Donatella de Pascale
Summary: This study reports a psychrophilic bacterium, Dietzia psychralcaliphila JI1D, isolated from Antarctica, which is able to tolerate high concentrations of heavy metals and facilitate their removal from polluted water. Genome analysis has revealed the detoxification mechanisms of this bacterium.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Environmental Sciences
Manar K. K. Abd Elnabi, Nehal E. E. Elkaliny, Maha M. M. Elyazied, Shimaa H. H. Azab, Shawky A. A. Elkhalifa, Sohaila Elmasry, Moustafa S. S. Mouhamed, Ebrahim M. M. Shalamesh, Naira A. A. Alhorieny, Abeer E. E. Abd Elaty, Ibrahim M. M. Elgendy, Alaa E. E. Etman, Kholod E. E. Saad, Konstantina Tsigkou, Sameh S. S. Ali, Michael Kornaros, Yehia A. -G. Mahmoud
Summary: The accumulation of both natural and anthropogenic sources of metals in the ecosystem has led to increasing concerns over heavy metal (HM) pollution. Human exposure to HMs, such as mercury, arsenic, lead, chromium, and cadmium, has become a significant environmental and health issue. These HMs can cause acute or chronic poisoning through water, air, or food. Their bioaccumulation in the body leads to various toxic effects on organs and tissues, primarily through the production of reactive oxygen species, enzyme inactivation, and oxidative stress. Conventional techniques for HM removal are limited, especially when the HM concentration is low. Microbial bioremediation, utilizing organisms like fungi and bacteria, has emerged as a potential solution due to their superior biosorption and bioaccumulation capabilities. This review aims to provide insights into HM uptake, toxicity mechanisms, and the management of metal poisoning through the selection of microbial remediation technology.
Review
Biotechnology & Applied Microbiology
Hai Lin, Mengying Zhou, Bing Li, Yingbo Dong
Summary: Heavy metal pollution is a serious threat to the environment and human health, and microbial mineralization technology has been widely studied for its remediation. This paper reviews the mechanisms and application examples of microbial-induced carbonate precipitation (MICP), microbial-induced phosphate precipitation (MIPP), and microbial-induced sulfide precipitation (MISP) in heavy metal remediation. It was found that MICP is more studied, while MIPP products are more stable in the natural environment and MISP is more suitable for anaerobic environments. The biomineralization effects and mechanisms of environmentally-friendly algae and heavy metal-tolerant fungi should be further studied.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Article
Microbiology
Jewel C. De Padua, Thomas Edison E. dela Cruz
Summary: The study identified 23 strains of Trichoderma with tolerance to nickel contamination, six of which exhibited the highest radial growth on TSM with 50-ppm Ni. Among these, T. asperellum (S03), T. virens (SG18 and SF22), and T. inhamatum (MW25) showed up to 68% uptake efficiency in PDB supplemented with 50-ppm Ni. Observation with SEM indicated minimal damage on hyphal and conidial surface morphology, highlighting the potential of terrestrial and marine Trichoderma strains for nickel pollution bioremediation.
Article
Biology
Mingwei Cai, Changhai Duan, Xinxu Zhang, Jie Pan, Yang Liu, Cuijing Zhang, Meng Li
Summary: Theionarchaea, a recently described archaeal class within the Euryarchaeota, was found in sediment ecosystems with potential metabolic capabilities including detoxifying proteins and amino acids. Through metagenomics and metatranscriptomics, Theionarchaea's role in marine ecosystems and its syntrophic relationship with fermenters and methanogens were revealed.
SCIENCE CHINA-LIFE SCIENCES
(2022)
Article
Engineering, Environmental
Hillol Chakdar, Shobit Thapa, Amit Srivastava, Pratyoosh Shukla
Summary: Cyanobacteria have emerged as a potential option for bioremediation of heavy metals due to their unique adaptations and robust metabolic machineries. Understanding their physiological responses and regulation at the molecular level is necessary to identify candidate genes and proteins for improving bioremediation efficiency. These approaches might pave new possibilities of implementing genetic engineering strategies in the future.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Microbiology
Filippo Dell'Anno, Eugenio Rastelli, Michael Tangherlini, Cinzia Corinaldesi, Clementina Sansone, Christophe Brunet, Sergio Balzano, Adrianna Ianora, Luigi Musco, Maria Rita Montereali, Antonio Dell'Anno
Summary: Coastal areas impacted by high anthropogenic pressures often have sediment contamination by PAHs and HMs. Microbial-based bioremediation may fail due to poor knowledge of local microbial communities, but this study identified bacteria with potential for bioremediation in highly contaminated sediments.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Ecology
Kun Zhou, Tin Yan Wong, Lexin Long, Karthik Anantharaman, Weipeng Zhang, Wai Chuen Wong, Rui Zhang, Pei-Yuan Qian
Summary: Marine biofilms are complex communities of microorganisms that play a crucial ecological role in oceans. Our study unveiled active viruses in natural biofilms and their complex interplay with prokaryotes. Biofilm prokaryotes have more abundant defence genes than seawater prokaryotes, and the defence gene composition differs between biofilms and the surrounding seawater.
Article
Engineering, Environmental
Eduard Villagrasa, Cristina Palet, Irene Lopez-Gomez, Diana Gutierrez, Isabel Esteve, Alejandro Sanchez-Chardi, Antonio Sole
Summary: The study analyzed the response of Ochrobactrum anthropi DE2010 to heavy metal exposure, including tolerance, removal capacity, and metal localization patterns. The research found that the bacterium exhibited high resistance to the tested metals, and demonstrated good removal and metal sequestration capabilities.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Sreelakshmi Parakkaparambil Kuttan, Anas Abdulaziz, Jasmin Chekidhenkuzhiyil, Devika Raj, Mahesh Mohan, Sujith Athiyanathil
Summary: This study reports the structural characterization, biosynthetic pathway, and potential application of melanin secreted by a sponge-associated bacterium. The melanin showed excellent metal biosorption ability and could potentially be used for removing toxic compounds from water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
M. Blanco-Vieites, D. Suarez-Montes, F. Delgado, M. Alvarez-Gil, A. Hernandez Battez, E. Rodriguez
Summary: This study tested the tolerance capacity of various algae to steel hot-rolling wastewater and found that spirulina could effectively reduce hydrocarbons and iron concentration in the wastewater, making it a potential sustainable bioremediation tool.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
Suyu Qiao, Guoquan Zeng, Xitong Wang, Chenggang Dai, Mingping Sheng, Qun Chen, Fei Xu, Heng Xu
Summary: The study showed that the MICP process could effectively remove common heavy metals in mining areas, such as copper, zinc, nickel, and cadmium.
Article
Microbiology
Filippo Dell'Anno, Eugenio Rastelli, Emanuela Buschi, Giulio Barone, Francesca Beolchini, Antonio Dell'Anno
Summary: The study demonstrates that marine fungi are more effective in bioleaching heavy metals from contaminated marine sediments compared to acidophilic autotrophic and heterotrophic bacteria, especially when used in combination with bacteria. Fungal addition significantly increases the bioleaching yields of metals, particularly for less mobile fractions such as Zn and Cd.
Article
Microbiology
Matilde Ciani, Alessandra Adessi
Summary: This article presents the potential use of cyanobacteria as a biotechnological tool for sustainable and circular solutions. It focuses on the bioremediation of heavy metals and metal recovery and reuse using cyanobacteria. The combination of biosorption and valorization of metal-organic materials can yield valuable compounds, such as metal nanoparticles, expanding the field of phyconanotechnology. These combined approaches could enhance the environmental and economic feasibility of cyanobacteria-based processes, facilitating the transition towards a circular economy.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Engineering, Environmental
Cheng Peng, Xuan Zhao, Xiaowen Ji, Jinhong Wu, Weiyu Liang, Huihui Song, Wei Zhang, Xuedong Wang
Summary: This study investigated the effectiveness and mechanism of mixed bacteria in treating Pb, Cd, and As complex contaminated soil. The optimal medium and conditions were determined, and the mixed bacteria were used to treat the contaminated soil. The results showed that the remediation mechanism involved in adsorption, biomineralization, and oxidation by mixed bacteria.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Medicinal
Shimei Wu, Ge Liu, Shengnan Zhou, Zhenxia Sha, Chaomin Sun
Article
Ecology
Jing Zhang, Rui Liu, Shichuan Xi, Ruining Cai, Xin Zhang, Chaomin Sun
Article
Microbiology
Rui Liu, Rikuan Zheng, Ge Liu, Chaomin Sun
ENVIRONMENTAL MICROBIOLOGY
(2020)
Article
Biotechnology & Applied Microbiology
Z. Wu, R. Zheng, J. Zhang, S. Wu
Summary: This study investigated the anti-biofilm and anti-infection mechanism of EPS273 on a transcriptional level using an RNA-Seq approach. The results showed that EPS273 can reduce biofilm formation and infection of P. aeruginosa by downregulating the expression of the PhoP-PhoQ and QS systems.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Shengnan Zhou, Ge Liu, Rikuan Zheng, Chaomin Sun, Shimei Wu
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2020)
Article
Microbiology
Ning Ma, Zhongli Sha, Chaomin Sun
Summary: The addition of cysteine enhances the Cd tolerance and removal efficiency of deep-sea bacterium Idiomarina sp. OT37-5b, leading to the formation of CdS nanoparticles which promote nitrogen reduction and energy production. The presence of CdS nanoparticles significantly boosts the growth and energy utilization of the bacterium under light exposure.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Microbiology
Zuodong Wu, Rikuan Zheng, Ge Liu, Rui Liu, Shimei Wu, Chaomin Sun
Summary: The marine bacterium Bacillus sp. 98 has evolved a strategy to alleviate Cd-toxicity by recruiting calcium to reduce intracellular nitric oxide and enhance iron acquisition. Proteomic analysis revealed that the expression of NO synthase was down-regulated while NO dioxygenase and iron uptake proteins were up-regulated when calcium was supplemented. Additionally, calcium protected bacteria against stresses from other heavy metals and this strategy was also observed in zebrafish, suggesting potential for developing calcium-associated products against heavy metals toxicity in the future.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Microbiology
Rikuan Zheng, Shimei Wu, Chaomin Sun
Summary: Through transcriptomics and proteomics analysis, MerF was found to play a key role in bacterial flagellum biogenesis and motility by directly binding to the promoter of fliS. Expression of merF and fliS could be simultaneously upregulated by different heavy metals, indicating the importance of MerF in both bacterial and archaeal domains.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Microbiology
Rikuan Zheng, Chaomin Sun
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2020)
Article
Biotechnology & Applied Microbiology
Ruining Cai, Jing Zhang, Rui Liu, Chaomin Sun
Summary: This study obtained 20 high-quality DPANN archaeal genomes from deep-sea hydrothermal vent sediments, revealing their broad diversity and metabolic characteristics in this special environment. Despite the small genome size and some incomplete biological processes, DPANN archaea have alternate strategies to address deficiencies and the potential to assimilate nitrogen and sulfur compounds.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Editorial Material
Environmental Sciences
Ning Ma, Chaomin Sun
Summary: The study found that the addition of cysteine can enhance bacterial resistance to cadmium and promote energy production; biofilm formation plays a positive role in bacterial cadmium resistance; when facing cadmium stress, the expression of genes related to biofilm formation will be significantly upregulated.
ENVIRONMENTAL MICROBIOLOGY REPORTS
(2021)
Article
Ecology
Rikuan Zheng, Rui Liu, Yeqi Shan, Ruining Cai, Ge Liu, Chaomin Sun
Summary: This study successfully isolated a representative strain of Izemoplasma from a deep-sea methane seep, providing detailed insights into its physiological, genomic, and metabolic characteristics. The novel strain demonstrated strong DNA-degradation potentials and the ability to utilize extracellular DNA for growth. The proposed new species and genus Xianfuyuplasma coldseepsis based on the description of strain zrk13 contributes to a better understanding of the metabolic potential and ecological role of Izemoplasma bacteria in deep ocean biogeochemical cycling.
Article
Chemistry, Medicinal
Yun Wang, Ge Liu, Rui Liu, Maosheng Wei, Jinxiang Zhang, Chaomin Sun
Summary: EPS364, a novel exopolysaccharide purified from Vibrio alginolyticus 364, displayed significant antitumor activity in liver cancer cells by inducing apoptosis, disrupting MMP, and generating ROS, possibly through targeting the FGF19-FGFR4 signaling pathway. These findings suggest that EPS364 is a promising antitumor agent for pharmacotherapy.
Article
Microbiology
Chenchen Guo, Rikuan Zheng, Ruining Cai, Chaomin Sun, Shimei Wu
Summary: The study identified a novel bacterial strain, Pseudomonas marinensis gcc21, isolated from deep-sea cold seep sediment, which exhibited high catalytic activity of cold-active lipases at 4 degrees C. The strain's genome contained two novel encoding genes for cold-active lipases, Lipase 1 and Lipase 2.
