Article
Chemistry, Physical
Pengyi Lv, Bohui Wei, Wenkai Ma, Xiao Luo
Summary: This research discovered a novel aerobic denitrifier, Pseudomonas sp. 41, which could rapidly degrade high concentrations of nitrate at low temperatures. The strain demonstrated excellent nitrate removal performance and showed optimal nitrogen removal under specific conditions. Additionally, the immobilized strain 41 significantly improved denitrification efficiency and shortened reaction time.
Article
Energy & Fuels
Jin Gao, Jie Ming, Meng Xu, Xinge Fu, Liang-Feng Duan, Cong-Chao Xu, Yu Gao, Jian-Liang Xue, Xin-Feng Xiao
Summary: In the past 50 years, marine oil spills have caused serious environmental pollution globally. This study isolated 12 petroleum-degrading strains from the seawater in Jiaozhou Bay, China, with strain MJ4 showing the highest diesel-degrading rate. Single-factor experiments and response surface methodology were used to optimize the environmental factors affecting the diesel oil degradation process of Bacillus sp. MJ4.
Article
Microbiology
Ritu Rani Archana Kujur, Subrata K. Das
Summary: This study describes a bacterium strain RBPA9 capable of degrading phenol, proposed as a novel species of Pseudomonas. The genome size is 3.92 Mb with a G+C content of 64.64%. Phylogenetic analysis revealed that strain RBPA9 clustered with Pseudomonas stutzeri ATCC 17588(T). It was found that RBPA9 expresses all the genes required in the phenol degradation pathway.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Microbiology
Yingning Wang, Fang Ma, Jixian Yang, Haijuan Guo, Delin Su
Summary: A novel species of the genus Xanthobacter, named Xanthobacter dioxanivorans sp. nov., was isolated and characterized in this study. This bacterium is capable of degrading 1,4-dioxane and exhibits a wide range of growth conditions.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Environmental Sciences
Shuaiguo Li, Kejian Tian, Qing Qiu, Yue Yu, Han Li, Menghan Chang, Xuejian Sun, Jinming Gu, Fenglin Zhang, Yibing Wang, Hongliang Huo
Summary: As a widespread pollutant, BPA poses a serious threat to the ecosystem and human health. This study discovered that Pseudomonas sp. P1 has a high BPA degradation rate, with 96.89% degradation within 120 hours. Whole genome sequencing revealed that strain P1 has a single circular chromosome with 6.17 Mb length and 5636 predicted coding genes. Comparative genomic analysis showed that strain P1 contains 210 functional genes related to BPA degradation. Furthermore, the study identified the degradation pathways of BPA by Pseudomonas and discovered a new metabolite, 4-vinylphenol.
Article
Environmental Sciences
Tingchen Cui, Peng Wang, Jialu Li, YaoMing Su, Na Liu, Mei Hong
Summary: Strain NB-1, identified as Pseudomonas frederiksbergensis, efficiently degrades nitrobenzene and shows high adaptability to cold and alkaline conditions. Response surface methodology using the Haldane-Andrews model was applied to guide the treatment of nitrobenzene wastewater by NB-1, optimizing the growth conditions under different nitrobenzene concentrations.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Zhao Jiang, Qi Shao, Yuxin Chu, Ning An, Bo Cao, Zheyi Ren, Jin Li, Jianhua Qu, Maofeng Dong, Ying Zhang
Summary: This study explores the alleviation of atrazine toxicity in soybeans through co-inoculation of atrazine-degrading bacterium Arthrobacter sp. DNS10 and/or inorganic phosphorus-solubilizing bacterium Enterobacter sp. P1. The results show that co-inoculated strains can accelerate atrazine removal from soil, enhance phosphorus accumulation in leaves, increase chlorophyll content, and regulate plant transcriptome, thus mitigating atrazine-induced oxidative stress on soybeans.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Lingmin Jiang, Yuxin Peng, Jiyoon Seo, Doeun Jeon, Mi Gyeong Jo, Ju Huck Lee, Jae Cheol Jeong, Cha Young Kim, Hyeong Cheol Park, Jiyoung Lee
Summary: A novel strain of bacteria AK-R2A1-2(T) was isolated from the needle leaves of Abies koreana tree and its genome was sequenced. The results showed that this strain can survive at low temperatures and significantly improve the growth of rice seedlings.
SCIENTIFIC REPORTS
(2022)
Article
Biotechnology & Applied Microbiology
Rupesh Kumar Sinha, K. P. Krishnan, P. John Kurian
Summary: The genome of Alcanivorax sp. IO_7, a deep-sea bacteria capable of degrading alkanes, was sequenced and analyzed, revealing gene clusters for alkane degradation and biosurfactant production. The strain showed the ability to grow on hexadecane as its sole carbon source, suggesting efficient hydrocarbon degradation mechanisms. Presence of genes for heavy metal and multidrug resistance indicate survival strategies in hydrothermally influenced deep-sea environment.
Article
Microbiology
Yaxuan Yuan, Kexin Wang, Yihe Liu, Maoting Jiang, Yinhu Jiang, Jiguo Qiu
Summary: In this study, a novel phenacetin-degrading strain PNT-23 was isolated from municipal wastewater and identified as a Rhodococcus sp. The isolated strain could completely degrade 100 mg/L phenacetin within 80 h, utilizing it as its sole carbon source for growth. Two key intermediates, N-acetyl-4-aminophenol and 4-aminophenol, were identified during the phenacetin biodegradation by strain PNT-23. This study provides new insights into phenacetin biodegradation and presents a potential candidate for its microbial removal in various environments.
Article
Environmental Sciences
Jie Yang, Yujun Gu, Zhigao Chen, Yao Song, Fengfei Sun, Juan Liu, Michael Gatheru Waigi
Summary: This study found that rhizosphere bacterium Pyrene-degrading bacterium has a positive impact on the plant uptake of pyrene, promoting plant growth and reducing the content and translocation of pyrene, providing a potential solution for alleviating plant pyrene pollution. This finding is of great significance for the safety of agricultural products and human health in PAH-contaminated sites.
Article
Environmental Sciences
Chunhui Yan, Manjun Zhan, Kewei Xv, Siyuan Zhang, Ting Liang, Ran Yu
Summary: In this study, a cold-tolerant Bdellovibrio sp. CLL13 strain was screened, which significantly improved the dewaterability of waste activated sludge (WAS) by reducing viscosity and mitigating the negative effects of low temperature.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Hui Zhao, Yujun Gu, Xiangyu Liu, Juan Liu, Michael Gatheru Waigi
Summary: The study shows that root-associated bacterium Phe15 can degrade PAHs in contaminated soil and has good colonization and performance in white clover plants, which may help reduce plant pollution from PAHs in contaminated areas.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Yue Wang, Xi Chen, Bowen Wu, Tian Ma, Hanyi Jiang, Yaozu Mi, Cheng Jiang, Hailian Zang, Xinyue Zhao, Chunyan Li
Summary: For the bioremediation of black liquor in pulp and paper mills at low temperatures, a cold-adapted lignin-degrading bacterium Arthrobacter sp. C2 was employed. It exhibited excellent cold adaptability and lignin degradation ability, with a high lignin degradation rate and mineralization rate at 15 degrees C. The study revealed the cold regulation mechanism and lignin degradation pathway in strain C2, providing a feasible alternative strategy for the bioremediation of papermaking black liquor in cold regions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Multidisciplinary Sciences
Sang Weon Na, Byung Hee Chun, Seok-Hyeon Beak, Shehzad Abid Khan, Md. Najmul Haque, Jae Sung Lee, Che Ok Jeon, Sang-Suk Lee, Myunggi Baik
Summary: This study isolated a novel Gram-negative bacterium Pseudoprevotella muciniphila with mucin-degrading capabilities from the rumen epithelium of Korean cattle. The bacterium showed specific growth conditions and contained unique fatty acids, polar lipids, and respiratory quinones. Functional annotation of the genome revealed potential virulence factors that allow the bacterium to adhere to host cells and evade immune responses.
Article
Ecology
Peike Gao, Yu Li, Huimei Tian, Guoqiang Li, Feng Zhao, Wenjie Xia, Xunli Pan, Ji-Dong Gu, Jianjun Le, Chuanxing Jia, Ting Ma
Summary: The study investigated the distribution of bacterial and archaeal communities in water re-injection facilities of an oilfield, revealing different dominant microbial species in downhole injection wells and production wells. The results also demonstrated that environmental variation and diffusion-limited microbial transfer resulting from formation filtration were the main factors determining microbial community assembly in oil-bearing strata.
Article
Microbiology
Zhaoying Su, Shaojing Wang, Shicheng Yang, Yujun Yin, Yunke Cao, Guoqiang Li, Ting Ma
Summary: This study sequenced and analyzed the genome of salt-tolerant microorganism Exiguobacterium aurantiacum SW-20, which has the ability to degrade petroleum hydrocarbons. Genomic data mining and comparative transcriptomics identified genes related to salt tolerance and petroleum hydrocarbon degradation. In addition, multiple natural product biosynthesis gene clusters critical for survival in extreme conditions were detected. Comparative genomics revealed differences in gene composition among functional gene clusters from different strains. This research provides insights into the physiological features and adaptation strategies of E. aurantiacum SW-20 in the oilfield environment at the genomic level.
Article
Biochemical Research Methods
Shaojing Wang, Guoqiang Li, Zitong Liao, Yunke Cao, Yuan Yun, Zhaoying Su, Xuefeng Tian, Ziyu Gui, Ting Ma
Summary: Temperature is crucial for microbial growth, and suitable conditions can improve the isolation possibility of uncultured microorganisms. CnnPOGTP is a deep learning-based predictor that uses k-mers distribution from genomic sequences to infer the optimal growth temperature of prokaryotes.
Article
Chemistry, Applied
Mengmeng Wu, Yaqi Shen, Yue Ming, Zhuangzhuang Shi, Zhong Shi, Dakun Liu, Guoqiang Li, Ting Ma
Summary: This study characterizes a new mutant strain and its polysaccharide product, Hesan, which exhibits high elasticity and temperature sensitivity and can be efficiently produced through micro-aerobic static culture.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Chenchen Peng, Xuehua Wan, Jingjing Zhang, Bingling Zhang, Shuo Wang, Ting Ma, Ya Bian, Wei Wang
Summary: Oil refining waste (ORW) contains complex, hazardous, and refractory components. This study investigates the degradation of ORW using acclimated bacteria from oily sludges and polymer-flooding wastewater. The results show that oxygen and temperature play key roles in ORW degradation, with higher biomass and biodiversity promoting rapid and multi-component degradation. Dominant genera with oxygen-independent sustainable degradation ability are identified as promising bioremediation candidates.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Yuan Yun, Ziyu Gui, Tianqi Su, Xuefeng Tian, Shaojing Wang, Yu Chen, Zhaoying Su, Huiqiang Fan, Jinxia Xie, Guoqiang Li, Wenjie Xia, Ting Ma
Summary: The microbes in underground oil reservoirs play crucial roles in elemental cycles and biogeochemical processes. This study reveals that long-term oil recovery reduces bacterial diversity, increases community co-occurrence associations, and certain chemical substances significantly shape the diversity of indigenous subsurface bacterial communities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Tianzhi Jin, Yajing Wang, Shun Yao, Chuxiao Hu, Ting Ma, Wenjie Xia
Summary: This study successfully converted carbon dioxide into succinic acid and produced hydrogen using Citrobacter BD11. By optimizing the conditions, a high succinic acid production rate and carbon fixation rate were achieved. This research provides a new approach for the utilization of carbon dioxide and chemical synthesis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Peike Gao, Yu Gao, Hongbo Wang, Ting Ma, Ji-Dong Gu
Summary: This study identifies the presence of anammox bacteria in oil reservoirs and suggests that they are more easily detected in the downhole of water-injection wells. These bacteria, along with other bacteria, participate in the nitrogen cycle in oil reservoirs and potentially reduce externally injected nitrate through the production of N2O and N2. This research improves our understanding of anammox bacteria detection and highlights their roles in the nitrogen cycle in oil reservoirs.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Article
Engineering, Environmental
Mingchang Li, Jiaqi Yu, Lu Cao, Yujun Yin, Zhaoying Su, Shuai Chen, Guoqiang Li, Ting Ma
Summary: This study demonstrates that thermophilic facultative anaerobic bacteria can produce bioemulsifiers with excellent emulsifying capability and resilience, providing potential applications in bioremediation and enhanced oil recovery.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Lu Zhang, Xiangyu Zhou, Chuxiao Hu, Shun Yao, Lei Shi, Tong Niu, Xin Li, Lihua Tong, Jiaqiang Zhang, Ting Ma, Wenjie Xia
Summary: Heterocyclic hydrocarbon pollution from oil spills and oilfield wastewater poses a threat to the environment and human health. A strategy combining CO2 reduction and microbial remediation was described, utilizing the isolated Klebsiella michiganensis bacteria's ability to selectively biodegrade polar heterocyclic compounds in heavy oil. The presence of CO2 improved the biodegradation efficiency, reducing the abundance of resins and asphaltenes and decreasing heavy oil viscosity. These findings highlight a promising biotreatment technology for oil-contaminated water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Ge Gao, Shaofang Niu, Tongtong Liu, Yan Zhang, Xueqing Zhao, Zhishang Shi, Shuai Chen, Mengmeng Wu, Guoqiang Li, Ting Ma
Summary: A new strategy for in situ modification of water-insoluble modifiers was proposed in this study. Experimental results showed that xanthan gum as a suspending agent can uniformly and stably disperse water-insoluble plant extracts in the culture medium to prepare the in situ modified bacterial cellulose (BC) products. The in situ modified BC products exhibited reduced crystallinity, significantly increased swelling ratio, and strong antibacterial and antifungal activities. This study has important implications for the biopolymer industry.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Microbiology
Shun Yao, Tianzhi Jin, Lu Zhang, Yong Zhang, Rui Chen, Qian Wang, Mingjie Lv, Chuxiao Hu, Ting Ma, Wenjie Xia
Summary: This study explores the strategy of selective stimulation of indigenous functional microbes in petroleum reservoirs through the injection of an exogenous heterocycle-degrading strain of Pseudomonas. The results demonstrate that this microbial modulation approach can lead to in situ nitrogen/sulfur element release and electron acceptor generation, which improve the structure and function of the microbiome and enhance heavy oil recovery.
Article
Education & Educational Research
Jo Fletcher, John Everatt, Yogeetha Devi Bala Subramaniam, Ting Ma
Summary: In New Zealand, schools are innovating their architectural designs and learning spaces to encourage collaboration between teachers and students. However, there is limited research on how both teachers and students perceive these learning spaces. Asian students, in particular, have not received much attention despite potentially having different perceptions of learning compared to their English-speaking counterparts. This article compares the perceptions of teachers and students, with a focus on Asian students, in both innovative and traditional learning environments.
NEW ZEALAND JOURNAL OF EDUCATIONAL STUDIES
(2023)
Article
Humanities, Multidisciplinary
Ting Ma, Brent Swallow, J. Marc Foggin, Linsheng Zhong, Weiguo Sang
Summary: The Qinghai-Tibet Plateau is crucial for ecological security, biodiversity conservation, and livelihood sustainability. Various projects have been implemented in recent years to ensure sustainable development of animal husbandry in the alpine grasslands. Novel approaches, such as collaborative management in protected areas and the establishment of a multi-purpose national park system, have been successful. However, the perspectives of community stakeholders living within the protected landscapes have been overlooked. This study aims to address this gap by providing feedback and recommendations for improving community co-management collaborations.
HUMANITIES & SOCIAL SCIENCES COMMUNICATIONS
(2023)
Article
Education & Educational Research
Ngaroma Williams, Jo Fletcher, Ting Ma
Summary: Te Whariki is the first bicultural early childhood education curriculum in Aotearoa New Zealand, which has gained both national and international attention. However, it has not been well understood and implemented as a bicultural curriculum. The lack of confidence among early childhood education teachers in integrating te reo me nga tikanga Maori into their daily practices is a common challenge.
NEW ZEALAND JOURNAL OF EDUCATIONAL STUDIES
(2023)
