Article
Environmental Sciences
Oumayma Kahla, Sondes Melliti Ben Garali, Fatma Karray, Manel Ben Abdallah, Najwa Kallel, Najla Mhiri, Hatem Zaghden, Badreddine Barhoumi, Olivier Pringault, Marianne Quemeneur, Marc Tedetti, Sami Sayadi, Asma Sakka Hlaili
Summary: The efficiency of a benthic diatom-associated bacteria in removing BaP and Flt was investigated in this study. Results showed a co-metabolic synergy between microalgae and associated bacteria in biodegrading PAHs, suggesting their potential application in the bioremediation of contaminated sites.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Tingyu Zheng, Rui Liu, Jianjun Chen, Xuejun Gu, Jian Wang, Lingmei Li, Liqun Hou, Na Li, Yajie Wang
Summary: This study investigated the mechanisms of plant mediated microbial degradation of pyrene in soils contaminated with different levels of the pollutant. It found that pyrene degradation occurred through both double-oxygen and single-oxygen pathways in the rhizosphere of Fire Phoenix, with important microbial genes such as RHD alpha-GP, nidA, and nidB playing a key role in the degradation process. Furthermore, the expression of these genes was significantly correlated with the residual amount of pyrene and total PAH metabolites in the soil, suggesting their importance in the biodegradation of pyrene in the rhizosphere.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xiuping Chen, Yajie Hou, Hua Cheng, Mutai Bao, Yiming Li
Summary: The study found that using PAH-ATP modified bacteria can effectively emulsify oil and facilitate subsequent biodegradation. PAH-ATP can capture bacteria to the surface of oil droplets, significantly improving the degradation efficiency of oil pollution. Furthermore, the presence of PAH-ATP does not inhibit the activity and reproduction of bacteria.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Microbiology
Natalia Maria Silva, Camila Lopes Romagnoli, Caio Rafael do Nascimento Santiago, Joao Paulo Amorim de Lacerda, Sylvia Cardoso Leao, Luciano Antonio Digiampietri, Cristina Viana-Niero
Summary: This study evaluated the pyrene degradation ability of five isolates of Mycolicibacterium austroafricanum using DCPIP assay, CG/MS, and genomic analyses. Two isolates (MYC038 and MYC040) showed pyrene degradation indexes of 96% and 88% respectively over a seven-day incubation period. Genomic analyses revealed that these isolates lack nid genes involved in PAH degradation, suggesting the involvement of cyp150 genes or other unidentified genes in pyrene degradation. To our knowledge, this is the first report of isolates without nid genes demonstrating pyrene degradation ability.
Article
Microbiology
Zhong-Zhi Sun, Bo-Wen Ji, Ning Zheng, Meng Wang, Ye Cao, Lu Wan, Yi-Song Li, Jin-Cheng Rong, Hai-Lun He, Xiu-Lan Chen, Yu-Zhong Zhang, Bin-Bin Xie
Summary: Deconstruction of polysaccharides is important in their conversion, with polysaccharide-degrading enzymes playing a key role. This study investigated the phylogenetic distribution and correlations of nine types of these enzymes in marine bacterial genomes, revealing coding potentials and conservation at the genus level. The utilization of polysaccharides may contribute to the ecological differentiation of marine bacteria, with significant correlations observed between different enzymes.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Caixia Sun, Jiahui Xiao, Liang Bai, Junji Bai, Jingxuan Liu, Li Geng, Yulan Zhang
Summary: This study investigated the effects of different concentrations of a fresh PAH mixture and an aged natural PAH mixture on bacterial communities and PAH degradation potential in the Echinacea purpurea rhizosphere. The results showed that the enrichment of Actinobacteria and Patescibacteria in the rhizosphere was associated with enhanced PAH degradation potential, and different PAH mixtures favored different PAH-degrading bacteria. The study also highlighted the importance of soil nutrients and pH in shaping the PAH-degrading bacterial community in the rhizosphere.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Engineering, Environmental
Heting Fang, Akashdeep Singh Oberoi, Zhiqing He, Samir Kumar Khanal, Hui Lu
Summary: A CIP-degrading bacterial strain, Paraclostridium sp., was isolated from SRB-enriched sludge and optimized for maximum CIP removal. The study investigated the pathway and kinetics of CIP removal, proposing biotransformation reactions catalyzed by cytochrome P450 and dehydrogenases. The findings could aid in developing bioaugmentation strategy for treating CIP-laden wastewater.
Article
Soil Science
Chao Lu, Yang Hong, Emmanuel Stephen Odinga, Juan Liu, Daniel C. W. Tsang, Yanzheng Gao
Summary: This study investigated the interactive relationships among PAHs, PDGs, and bacterial communities in the rhizosphere soil and rice grain in PAH-contaminated paddy soil. It was found that PAHs played a critical role in shifting community composition in both soil and rice grain, while the abundance and diversity of PDB varied between the two environments. Additionally, different keystone species were identified in the soil and rice grain, with Pseudomonas and Sphingomonas being highlighted as important bacteria associated with PAH degradation in rice grain.
APPLIED SOIL ECOLOGY
(2021)
Article
Agronomy
Jakub Dobrzynski, Barbara Wrobel, Ewa Beata Gorska
Summary: Cellulolytic enzymes produced by Bacillus sp. 8E1A, a spore-forming bacterium, may be a potential solution for the degradation of lignocellulosic waste. The highest production of carboxymethyl cellulase (CMCase), filter paper hydrolase (FPase), and microcrystalline cellulose Avicel hydrolase (Avicelase) by Bacillus sp. 8E1A was observed when using carboxymethyl cellulose, Avicel cellulose, and carboxymethyl cellulose, respectively. The optimal temperature and pH for the enzyme activity varied depending on the type of cellulase.
Article
Soil Science
Guichi Zhang, Jian Wang, Hui Zhao, Juan Liu, Wanting Ling
Summary: The study demonstrated that a composite of six PAH-degrading endophytic bacterial strains effectively reduced PAH contents in plants, increased the abundances of PAH catabolic genes, and contributed to the reduction of PAH contents in vegetated soils and plants.
APPLIED SOIL ECOLOGY
(2021)
Article
Microbiology
Abdulkhaleg M. Alfaify, Mushtaq Ahmad Mir, Sulaiman A. Alrumman
Summary: In this study, a strain of Klebsiella oxytoca with efficient pyrene degradation ability was isolated from petroleum-contaminated soil. Through various experiments and analysis, the mechanism and pathway of pyrene degradation by K. oxytoca were elucidated, demonstrating its potential for soil aromatic hydrocarbon removal.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Engineering, Chemical
Yanina Delegan, Svetlana Sushkova, Tatiana Minkina, Andrey Filonov, Yulia Kocharovskaya, Konstantin Demin, Andrey Gorovtsov, Vishnu D. Rajput, Inna Zamulina, Tatiana Grigoryeva, Tamara Dudnikova, Andrey Barbashev, Aleksey Maksimov
Summary: This study conducted metagenomic analysis on industrially contaminated soils, revealing that the abundance of PAH degradation genes and taxa did not differ significantly between soils with different pollution levels. The most abundant taxa carrying PAH degradation genes were actinobacteria from the Terrabacteria group. In addition to well-known PAH degraders such as Gordonia and Rhodococcus, other microbes like Azoarcus, Burkholderia, and Variovorax were found to possess genes related to PAH degradation, highlighting the non-specific and multifunctional nature of metabolic pathways encoded in these microorganisms.
Article
Biochemistry & Molecular Biology
Reiji Tanaka, Yu Kurishiba, Hideo Miyake, Toshiyuki Shibata
Summary: This study successfully isolated and identified 13 bacteria capable of degrading ulvan from marine environments. Four genera that can degrade ulvan were isolated for the first time from marine environments. One isolate showed the ability to produce ulvan lyase and to be located externally or on the cell surface.
Article
Environmental Sciences
Guilherme Pinto Cauduro, Ana Lusia Leal, Marcela Marmitt, Leticia Gomes de Avila, Gabriela Kern, Patricia Doerr Quadros, Eshwar Mahenthiralingam, Victor Hugo Valiati
Summary: The study isolated bacteria resistant to polyaromatic hydrocarbons from activated sludge in a Petrochemical Wastewater Treatment Plant, demonstrating the biotechnological potential of Burkholderia cepacia complex strains for use in wastewater treatment and bioremediation.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Polymer Science
Hao Li, Minqi Zhang, Yuanhao Zhang, Xueming Xu, Ying Zhao, Xueping Jiang, Ran Zhang, Zhongzheng Gui
Summary: In this study, cellulose-degrading bacteria were isolated from silkworm excrement and a highly cellulolytic strain, Bacillus subtilis DC-11, was identified. The strain showed high cellulase activity, acid and heat resistance, and significantly improved cellulose degradation rate in bioaugmentation tests. This strain has the potential to be used in the safe and rapid composting of silkworm excrement.
Article
Multidisciplinary Sciences
Alexandra L. Emmons, Amy Z. Mundorff, Sarah W. Keenan, Jonathan Davoren, Janna Andronowski, David O. Carter, Jennifer M. DeBruyn
Article
Environmental Sciences
Henry Y. Sintim, Andy Bary, Douglas G. Hayes, Larry C. Wadsworth, Marife B. Anunciado, Marie E. English, Sreejata Bandopadhyay, Sean M. Schaeffer, Jennifer M. DeBruyn, Carol A. Miles, John P. Reganold, Markus Flury
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Microbiology
Jennifer M. DeBruyn, Katharina M. Hoeland, Lois S. Taylor, Jessica D. Stevens, Michelle A. Moats, Sreejata Bandopadhyay, Stephen P. Dearth, Hector F. Castro, Kaitlin K. Hewitt, Shawn R. Campagna, Angela M. Dautartas, Giovanna M. Vidoli, Amy Z. Mundorff, Dawnie W. Steadman
Summary: Research has shown that human and pig decomposition differ in their impacts on soil biogeochemistry and microbial activities. By conducting two seasonal trials, it was observed that both human and pig decomposition led to elevated levels of microbial respiration, protease activity, and ammonium in the soil, indicating enhanced microbial activity during decomposition. Soil respiration remained comparable between seasons, but the magnitude of decomposition products was greater in the summer.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Jialin Hu, Virginia L. Jin, Julie Y. M. Konkel, Sean M. Schaeffer, Liesel G. Schneider, Jennifer M. DeBruyn
Summary: The study shows that soil microbial transformations of nitrogen are influenced by different soil health management practices. Leguminous cover crop hairy vetch can effectively promote the expression of key functional genes involved in soil nitrogen cycling, leading to lasting effects on microbial activity throughout the growing season.
Article
Engineering, Environmental
Marife B. Anunciado, Douglas G. Hayes, Anton F. Astner, Larry C. Wadsworth, Christina Danielle Cowan-Banker, Jose E. Liquet y Gonzalez, Jennifer M. DeBruyn
Summary: This study compared the biodegradability of agriculturally weathered and unweathered biodegradable plastic mulch films in soil and compost. The research showed that environmental weathering enhances the biodegradation of the films, and the polymeric constituents of the mulch also influence microbial degradation, especially for bacterial communities.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Xiuwen Li, Sutie Xu, Avishesh Neupane, Nourredine Abdoulmoumine, Jennifer M. DeBruyn, Forbes R. Walker, Sindhu Jagadamma
Summary: The study showed that different types of biochar have varied effects on soil nitrogen management, with biochar high in CEC reducing nitrate concentration and biochar high in ash content reducing N2O emissions. When combined with urea, biochar with higher CEC decreased ammonification and nitrification rates, while biochar with higher ash content reduced N2O emissions.
Article
Microbiology
Alexandra L. Emmons, Amy Z. Mundorff, Katharina M. Hoeland, Jonathan Davoren, Sarah W. Keenan, David O. Carter, Shawn R. Campagna, Jennifer M. DeBruyn
Summary: Microbial communities in postmortem bone are different from those in soil and human gut, with depositional environment influencing the bone microbiome.
Article
Education, Scientific Disciplines
Benjamin H. Holt, Alison Buchan, Jennifer M. DeBruyn, Heidi Goodrich-Blair, Elizabeth McPherson, Veronica A. Brown
JOURNAL OF MICROBIOLOGY & BIOLOGY EDUCATION
(2022)
Article
Microbiology
Allison R. Mason, Hayden S. McKee-Zech, Katharina M. Hoeland, Mary C. Davis, Shawn R. Campagna, Dawnie W. Steadman, Jennifer M. DeBruyn
Summary: Microorganisms play a key role in the decomposition of vertebrate mortalities. This study investigates the effects of intrinsic factors, such as age, sex, diseases, and body mass index (BMI), on soil chemistry and microbial changes in decomposition-impacted soils. The results show that BMI can explain some variation in soil pH and microbial response to human decomposition.
Article
Microbiology
Ning Duan, Mark Radosevich, Jie Zhuang, Jennifer. M. M. DeBruyn, Margaret Staton, Sean. M. M. Schaeffer
Summary: Soil viral infection can impact soil microbial structure and functions, which are vital to global biogeochemical cycling. In long-term conservation agricultural management, viral diversity, community structure, and the correlation with bacteria are influenced by nitrogen fertilization.
Article
Multidisciplinary Sciences
Lois C. Taylor, Adrian Gonzalez, Michael Z. Essington, Scott W. Lenaghan, C. Neal M. Stewart, Amy E. Mundorff, Dawnie E. Steadman, Jennifer E. DeBruyn
Summary: Mammalian decomposition creates temporary hotspots of nutrient cycling in the local ecosystem through pulses of organic matter. This study focused on evaluating temporal changes in dissolved soil elements during human decomposition, including abundant mineral elements in the human body, trace elements, and common soil elements.
Article
Agriculture, Multidisciplinary
Kaushik Adhikari, Anton F. Astner, Jennifer M. DeBruyn, Yingxue Yu, Douglas G. Hayes, Brian T. O'Callahan, Markus Flury
Summary: This study investigated the interactions between earthworms and microplastics in a natural environment. The results showed that microplastics did not have adverse effects on earthworms at environmentally realistic concentrations.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Beant Kapoor, Aaron Onufrak, William Klingeman III, Jennifer M. Debruyn, Melissa A. Cregger, Emma Willcox, Robert Trigiano, Denita Hadziabdic
Summary: Prescribed burn influences forest plant communities and their associated microorganisms. However, its effects on the microbial communities of important tree species, such as flowering dogwood, are not well understood, particularly in aboveground plant tissues.
Article
Microbiology
Daniel J. Wieczynski, Kristin M. Yoshimura, Elizabeth R. Denison, Stefan Geisen, Jennifer M. DeBruyn, A. Jonathan Shaw, David J. Weston, Dale A. Pelletier, Steven W. Wilhelm, Jean P. Gibert
Summary: We provide a roadmap for understanding the impact of viral infections within microbial food webs on ecosystem carbon and nutrient cycling in the context of global warming. Microorganisms play a crucial role in carbon and nutrient cycles and act as a link between ecosystems and climate. However, viral infections within complex microbial food webs pose a significant challenge in predicting and understanding ecosystem responses to warming. We highlight the need for further research on virus-microbe-temperature interactions and their effects on ecosystem functioning in the face of climate change.
FEMS MICROBIOLOGY ECOLOGY
(2023)
Review
Microbiology
Allison R. Mason, Lois S. Taylor, Jennifer M. DeBruyn
Summary: Decomposing carcasses host dynamic microbial communities that recycle carbon and nutrients, serving as indicators of time since death. However, research on these microbial communities is often limited to forensic applications, neglecting the larger ecological context.
FEMS MICROBIOLOGY ECOLOGY
(2023)