Article
Biochemistry & Molecular Biology
Xinan Xu, Lixia Zhang, Ye Han, Zhijiang Zhou
Summary: This study investigated the adsorption capacity of immobilized and free EPS on Pb2+ and Zn2+, with immobilized EPS showing better performance. Thermodynamic studies and adsorption isotherm models confirmed that the adsorption process was mainly chemisorption, involving complexation reactions and ion exchange.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Agricultural Engineering
Bhawna Tyagi, Bulbul Gupta, Deepak Khatak, Ramovatar Meena, Indu Shekhar Thakur
Summary: In this study, Methylobacterium sp. ISTM1 was able to produce both EPS and PHA simultaneously in a single-step process by optimizing the culture conditions. The genomic analysis identified the genes and pathways involved in EPS and PHA production. The non-toxicity of the biopolymers was confirmed by cytotoxicity analysis. This research demonstrates the potential of utilizing agro-industrial waste for sustainable production of non-toxic biopolymers by Methylobacterium sp. ISTM1.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Olga Kronusova, Petr Kastanek, Gorkem Koyun, Frantisek Kastanek, Tomas Branyik
Summary: This study determined the optimum conditions for growth and extracellular polysaccharides (EPS) overproduction of the freshwater green microalgae Dictyosphaerium chlorelloides. By limiting nutrient supply, EPS overproduction was achieved, while salinity stress did not significantly increase EPS production. It was found that the microalgae exhibited the fastest growth and EPS production in a medium containing ammonium nitrate. A new methodology for separating cells from the EPS-containing culture broth was also developed. This research suggests that Dictyosphaerium chlorelloides may be suitable for commercial EPS production.
Article
Biochemistry & Molecular Biology
Yudie Lin, Hui Gu, Xiaochen Jia, Wenxia Wang, Bo Hong, Fuyun Zhang, Heng Yin
Summary: Sheath blight, caused by Rhizoctonia solani, is a serious disease in rice. This study isolated and extracted extracellular polysaccharides (EPS) from R. solani and characterized their structures. The EPS, EW-I and ES-I, were found to have similar monosaccharide composition but different molar ratios. Pretreatment of rice with EW-I and ES-I induced plant defense and enhanced resistance to sheath blight.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Kai Wei, Yoshimasa Amano, Motoi Machida
Summary: Extracellular polysaccharides (EPS) and tightly cell-bound EPS (TB-EPS) play a crucial role in the colony formation and buoyancy ability of Microcystis cells, with TB-EPS showing a strong ability to induce large colony formation under light conditions. Solution pH is also a key environmental factor influencing colony formation and buoyancy.
WATER AIR AND SOIL POLLUTION
(2021)
Review
Plant Sciences
Siarhei A. Dabravolski, Stanislav V. Isayenkov
Summary: Desert cyanobacteria have developed sophisticated adaptation strategies to survive and flourish in extreme arid conditions. They play a role in improving soil properties, impacting soil ecology and the environment, and have potential applications in preventing soil erosion and desertification.
Article
Biochemistry & Molecular Biology
Siying Zhang, Zhonghui Qiao, Zihan Zhao, Jiao Guo, Kaiwen Lu, Kevin H. Mayo, Yifa Zhou
Summary: The study compared the polysaccharides derived from mycelium and culture of Penicillium oxalicum, revealing differences in chemical structures and inhibitory effects on galectins. These findings provide insights into the structure-activity relationships of polysaccharides as galectin inhibitors.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Review
Chemistry, Applied
Yan Wang, Xiao Zhang, Xiao Tian, Yuan Wang, Xiang Xing, Shuliang Song
Summary: L-fucose, a six-carbon sugar, has potential applications in various fields. It has antitumor effects and can alleviate intestinal diseases. It shows potential as an emulsifier in the food industry and is used in functional foods and anti-aging skincare products. However, the large-scale preparation of high-purity L-fucose is currently not possible and requires further development. This review summarizes the preparation methods and detection methods of L-fucose, providing a reference for related research.
Review
Biochemistry & Molecular Biology
Xiaqing Sun, Jianfa Zhang
Summary: In recent decades, there has been extensive research on the composition, structure, biosynthesis, and function of bacterial extracellular polysaccharides (EPS), highlighting the crucial role of EPS in biological activities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Plant Sciences
Ayako Isobe, Chikako Kuwabara, Michiya Koike, Keita Sutoh, Kentaro Sasaki, Ryozo Imai
Summary: TAD1, a plant defensin induced by low temperature in winter wheat, shows antifungal activity against Microdochium nivale. The study suggests that EPS may act as a physical barrier against antimicrobial proteins secreted by plants.
Article
Engineering, Environmental
Huijuan Song, Xiaoling Kuang, Xiangdong Wei, Si Luo, Qingru Zeng, Liang Peng
Summary: This experiment investigated the potential effects and mechanism of TiO2 nanoparticles with different particle sizes on the removal of cadmium from paddy crust in water. The results showed that TiO2 nanoparticles can enhance the uptake and removal of cadmium by the paddy crust, with the 100 nm particles having the highest efficiency. The addition of TiO2 nanoparticles also stimulated the secretion of extracellular substances and increased the content of adsorptive sites in the paddy crust.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xianyue Jing, Xing Liu, Zhishuai Zhang, Xin Wang, Christopher Rensing, Shungui Zhou
Summary: In this study, synchronized biological nitrogen fixation and electric energy production were achieved using Geobacter sulfurreducens in a microbial electrochemical system. Results showed that nitrogen fixation could be driven by anode respiration without compromising coulombic efficiency. This approach offers a green alternative for nitrogen fixation and has implications for N-deficient wastewater treatment.
Article
Biotechnology & Applied Microbiology
Xiaofang Li, Yangge Yu, Ying Li, Zuoying Yin, Xiuming Liu, Bin Lian
Summary: The study demonstrates that introducing minerals can significantly increase the viscosity, EPS, and protein contents in the culture medium, leading to an enhanced production of bacterial polysaccharides. Bacteria protect and maintain their normal life under mineral treatments by synthesis and secretion of excessive EPS, enhancement of oxidation resistance, and secretion of various organic acids.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2022)
Article
Microbiology
Yucui Liu, Yanxin Huang, Cong Fan, Zhongmei Chi, Miao Bai, Luguo Sun, Li Yang, Chunlei Yu, Zhenbo Song, Xiaoguang Yang, Jingwen Yi, Shuyue Wang, Lei Liu, Guannan Wang, Lihua Zheng
Summary: Ursolic acid can decrease bacterial viability and prevent S. mutans biofilm formation by binding and inhibiting the activity of GTFs.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Yanai Xie, Zhen Ye, Xin Wan, Hua Deng, Weihao Sun, Xun He, Kequan Chen
Summary: In this study, a strain of Enterobacter aerogenes NJ1023 capable of producing extracellular polysaccharides (EPSs) was found. The polysaccharide produced by this strain had a lower molecular weight and a different composition compared to other polysaccharides from the same genus. The EPSs produced by E. aerogenes NJ1023 showed significant protective effects against cadaverine stress in Escherichia coli cells.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
James R. Collins, Bethanie R. Edwards, Kimberlee Thamatrakoln, Justin E. Ossolinski, Giacomo R. DiTullio, Kay D. Bidle, Scott C. Doney, Benjamin A. S. Van Mooy
GLOBAL BIOGEOCHEMICAL CYCLES
(2015)
Article
Ecology
Jill A. Sohm, Nathan A. Ahlgren, Zachary J. Thomson, Cheryl Williams, James W. Moffett, Mak A. Saito, Eric A. Webb, Gabrielle Rocap
Article
Multidisciplinary Sciences
Nathan Walworth, Ulrike Pfreundt, William C. Nelson, Tracy Mincer, John F. Heidelberg, Feixue Fu, John B. Waterbury, Tijana Glavina del Rio, Lynne Goodwin, Nikos C. Kyrpides, Miriam L. Land, Tanja Woyke, David A. Hutchins, Wolfgang R. Hess, Eric A. Webb
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2015)
Article
Multidisciplinary Sciences
David A. Hutchins, Nathan G. Walworth, Eric A. Webb, Mak A. Saito, Dawn Moran, Matthew R. McIlvin, Jasmine Gale, Fei-Xue Fu
NATURE COMMUNICATIONS
(2015)
Article
Chemistry, Analytical
James R. Collins, Bethanie R. Edwards, Helen F. Fredricks, Benjamin A. S. Van Mooy
ANALYTICAL CHEMISTRY
(2016)
Article
Multidisciplinary Sciences
Nathan G. Walworth, Michael D. Lee, Fei-Xue Fu, David A. Hutchins, Eric A. Webb
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2016)
Article
Multidisciplinary Sciences
Nathan G. Walworth, Fei-Xue Fu, Eric A. Webb, Mak A. Saito, Dawn Moran, Matthew R. Mcllvin, Michael D. Lee, David A. Hutchins
NATURE COMMUNICATIONS
(2016)
Article
Ecology
Michael D. Lee, Nathan G. Walworth, Erin L. McParland, Fei-Xue Fu, Tracy J. Mincer, Naomi M. Levine, David A. Hutchins, Eric A. Webb
Editorial Material
Multidisciplinary Sciences
David A. Hutchins, Feixue Fu, Nathan G. Walworth, Michael D. Lee, Mak A. Saito, Eric A. Webb
Review
Geochemistry & Geophysics
Sergio A. Sanudo-Wilhelmy, Laura Gomez-Consarnau, Christopher Suffridge, Eric A. Webb
ANNUAL REVIEW OF MARINE SCIENCE, VOL 6
(2014)
Article
Ecology
Lily M. Momper, Brandi Kiel Reese, Gustavo Carvalho, Patrick Lee, Eric A. Webb
Article
Multidisciplinary Sciences
Dominique Boeuf, Bethanie R. Edwards, John M. Eppley, Sarah K. Hu, Kirsten E. Poff, Anna E. Romano, David A. Caron, David M. Karl, Edward F. DeLong
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Article
Microbiology
Chana F. Kranzler, Jeffrey W. Krause, Mark A. Brzezinski, Bethanie R. Edwards, William P. Biggs, Michael Maniscalco, John P. McCrow, Benjamin A. S. Van Mooy, Kay D. Bidle, Andrew E. Allen, Kimberlee Thamatrakoln
NATURE MICROBIOLOGY
(2019)
Article
Microbiology
Matthew D. Johnson, Bethanie R. Edwards, David J. Beaudoin, Benjamin A. S. Van Mooy, Assaf Vardi
ENVIRONMENTAL MICROBIOLOGY
(2020)
Article
Multidisciplinary Sciences
Nianzhi Jiao, Jihua Liu, Bethanie Edwards, Zongqing Lv, Ruanhong Cai, Yongqin Liu, Xilin Xiao, Jianning Wang, Fanglue Jiao, Rui Wang, Xingyu Huang, Bixi Guo, Jia Sun, Rui Zhang, Yao Zhang, Kai Tang, Qiang Zheng, Farooq Azam, John Batt, Wei-Jun Cai, Chen He, Gerhard J. Herndl, Paul Hill, David Hutchins, Julie LaRoche, Marlon Lewis, Hugh MacIntyre, Luca Polimene, Carol Robinson, Quan Shi, Curtis A. Suttle, Helmuth Thomas, Douglas Wallace, Louis Legendre
Summary: The study found that chemical oxygen demand (COD) is not an appropriate proxy for assessing the microbial degradability of organic matter in aquatic environments, and recommends the replacement of COD with an optode-based biological oxygen demand method.