Article
Biotechnology & Applied Microbiology
Catharine Elizabeth Bosman, Robert William McClelland Pott, Steven Martin Bradshaw
Summary: This study evaluates the use of a thermosiphon photobioreactor (TPBR) for photofermentative hydrogen production. The results show that biomass concentration has a significant impact on hydrogen production and biomass suspension. The optimal operating conditions were determined using response surface methodology, and maximum specific hydrogen production rates and biomass suspension rates were predicted.
BIOENGINEERING-BASEL
(2022)
Article
Agricultural Engineering
Tingxing Dan, Huiyan Jing, Tian Shen, Jia Zhu, Yanping Liu
Summary: The use of waste as a carbon source significantly reduces the cost of producing PHAs. In this study, an acidified hydrolysate derived from food waste was used as a carbon source to synthesize PHAs by R. palustris, and the process parameters were optimized. The results showed a PHAs yield of 48.62% under optimal conditions. R. palustris utilizes VFAs with different carbon numbers to synthesize different types of PHAs.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Brandon Sean Ross, Robert W. M. Pott
Summary: Biohydrogen production via photofermentation has low environmental impact and can be integrated into wastewater treatment systems. However, current production rates are low compared to industrial processes, requiring improvement. One strategy for enhancing productivity is the development of improved photobioreactor systems. This study compared hydrogen productivity of Rhodopseudomonas palustris under different cell conditions, with the fluidized bed PBR achieving the highest specific hydrogen production rate and substrate conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Katja E. Luxem, Aaron J. Nguyen, Xinning Zhang
Summary: This study investigates the factors affecting nitrogen reduction and hydrogen production rates in Rhodopseudomonas palustris. The results suggest that the hydrogen production rate is primarily controlled by the growth rate and secondarily by the nitrogenase enzymology. The iron-only nitrogenase exhibits the highest H-2:N-2 stoichiometry.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biotechnology & Applied Microbiology
Lucas Wise, Sabrina Marecos, Katie Randolph, Mohamed Hassan, Eric Nshimyumukiza, Jacob Strouse, Farshid Salimijazi, Buz Barstow
Summary: Global consumption of protein is expected to double by the mid-21st century. However, protein production is one of the most energy-intensive and environmentally damaging parts of the food supply system. Electromicrobial production technologies combining renewable electricity and CO2-fixing microbial metabolism could greatly increase the energy efficiency of commodity chemical production.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Monika Sogani, Aazraa O. Pankan, Aman Dongre, Kamran Yunus, Adrian C. Fisher
Summary: This study demonstrates the biodegradation potential of ethinylestradiol (EE2) in anaerobic environments using exoelectrogenic activity of Rhodopseudomonas palustris. The novel setup of hybrid photo-assisted microbial fuel cell (h-PMFC) enhanced EE2 degradation and power density, highlighting the significance of co-metabolism in bioremediation of pollutants and bioenergy generation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Jan-Pierre du Toit, Robert W. M. Pott
Summary: This study evaluated the growth and hydrogen productivity of two strains of R. palustris acclimated to higher temperatures, showing significantly increased optimisation effects at 35°C and 40°C. The results highlight the importance of pre-acclimation for verifying temperature optima and expand the feasible temperature range for high-rate biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biotechnology & Applied Microbiology
Catharine Elizabeth Bosman, Robert William McClelland Pott, Steven Martin Bradshaw
Summary: Photofermentative hydrogen production has gained attention as green energy. This study investigates the effect of light sources on the hydrogen production and growth of Rhodopseudomonas palustris. Results show that longer-wavelength light enhances hydrogen production, but the organism can still produce a considerable volume of hydrogen under light mimicking sunlight, providing prospects for future research.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2023)
Article
Fisheries
Chewapat Saejung, Anuwat Chaiyarat, La-orsri Sanoamuang
Summary: The use of Rhodopseudomonas faecalis PA2 as a feed for fairy shrimp has been shown to enhance their growth and survival rates. Additionally, comparing different forms of the bacterial powder revealed that air-dried and freeze-dried R. faecalis PA2 are beneficial for fairy shrimp and do not affect water quality.
Article
Biotechnology & Applied Microbiology
Catharine Elizabeth Bosman, Robert William McClelland Pott, Steven Martin Bradshaw
Summary: In this study, computational fluid dynamics (CFD) was used to design two new thermosiphon photobioreactor (TPBR) configurations for photofermentative hydrogen production by Rhodopseudomonas palustris. The simulations and evaluations showed that both TPBR designs were suitable for R. palustris, and the proposed CFD method was suitable for photobioreactor design.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Agronomy
Xiyang Wu, Yue Chen, Chenggang Li, Xin Zhang, Xinqiu Tan, Liang Lv, Yong Liu, Deyong Zhang
Summary: Our results demonstrate that the photosynthetic bacterium Rhodopseudomonas palustris significantly controls rice blast disease. This control involves an extracellular GroEL protein, which inhibits appressoria formation, antagonizes the pathogenicity of Magnaporthe oryzae, and promotes host defense response.
PEST MANAGEMENT SCIENCE
(2021)
Review
Chemistry, Physical
Juan-Ding Xiao, Rui Li, Hai-Long Jiang
Summary: Metal-organic frameworks (MOFs) are crystalline inorganic-organic hybrid materials with tunable semiconducting behavior. They have potential for use in photocatalysis to produce sustainable solar fuels, thanks to their unique structural advantages that allow for a better understanding of the structure-activity relationship. This review focuses on the active sites in MOF-based photocatalysts and discusses their enhanced activity based on the well-defined structure of MOFs, providing deep insights into MOF-based photocatalysis.
Article
Microbiology
Meijie Li, Tongtong Zhu, Rumeng Yang, Zhaobao Wang, Min Liu, Jianming Yang
Summary: In this study, a salt-tolerant strain of Rhodopseudomonas palustris was obtained through laboratory evolution, and the salt tolerance mechanism was investigated. It was found that the synthesis of carotenoids was closely related to the salt tolerance of the strain. Gene overexpression and knockout experiments further confirmed the important role of carotenoids in salt stress tolerance.
FRONTIERS IN MICROBIOLOGY
(2023)
Review
Biochemical Research Methods
Oliver Klaus, Fabienne Hilgers, Andreas Nakielski, Dennis Hasenklever, Karl-Erich Jaeger, Ilka M. Axmann, Thomas Drepper
Summary: This review provides an overview of current strategies to employ and engineer oxygenic and anoxygenic phototrophic bacteria as alternative cell factories for sustainable terpenoid production, emphasizing the effects of terpenoid pathway engineering and different illumination strategies on terpenoid photoproduction.
CURRENT OPINION IN BIOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Yi-Jie Li, Reuben Wang, Chung-Yen Lin, Shu-Hwa Chen, Chia-Hsien Chuang, Tzu-Ho Chou, Chi-Fang Ko, Pei-Hsin Chou, Chi-Te Liu, Yang-hsin Shih
Summary: By using time-course transcriptomic analysis and gene expression level analysis, the specific metabolic pathway of HBCD in Rhodopseudomonas palustris was identified. The study revealed that HBCD induced multiple metabolic pathways including ABC transporter, butanoate metabolism, and others in R. palustris.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemical Research Methods
J. R. Buser, A. Wollen, E. K. Heiniger, S. A. Byrnes, P. C. Kauffman, P. D. Ladd, P. Yager
Article
Biotechnology & Applied Microbiology
Jean J. Huang, Erin K. Heiniger, James B. McKinlay, Caroline S. Harwood
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2010)
Article
Biotechnology & Applied Microbiology
Erin K. Heiniger, Yasuhiro Oda, Sudip K. Samanta, Caroline S. Harwood
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2012)
Article
Biotechnology & Applied Microbiology
Federico E. Rey, Erin K. Heiniger, Caroline S. Harwood
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2007)
Article
Biochemistry & Molecular Biology
Kenneth A. Satyshur, Gregory A. Worzalla, Lorraine S. Meyer, Erin K. Heiniger, Kelly G. Aukema, Ana M. Misic, Katrina T. Forest