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Wang Z, Guo Z, Xin Y, Gu Z, Shi Y, Yang T, Li Y, Shi G, Ding Z, Zhang L. Exploration of the Native Sucrose Operon Enables the Development of an Inducible T7 Expression System in Paenibacillus polymyxa. ACS Synth Biol 2024; 13:658-668. [PMID: 38319655 DOI: 10.1021/acssynbio.3c00689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The use of Paenibacillus polymyxa as an industrial producer is limited by the lack of suitable synthetic biology tools. In this study, we identified a native sucrose operon in P. polymyxa. Its structural and functional relationship analysis revealed the presence of multiple regulatory elements, including four ScrR-binding sites and a catabolite-responsive element (CRE). In P. polymyxa, we established a cascade T7 expression system involving an integrated T7 RNA polymerase (T7P) regulated by the sucrose operon and a T7 promoter. It enables controllable gene expression by sucrose and regulatory elements, and a 5-fold increase in expression efficiency compared with the original sucrose operon was achieved. Further deletion of SacB in P. polymyxa resulted in a 38.95% increase in the level of thermophilic lipase (TrLip) production using the cascade T7 induction system. The results highlight the effectiveness of sucrose regulation as a novel synthetic biology tool, which facilitates exploring gene circuits and enables their dynamic regulation.
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Affiliation(s)
- Zilong Wang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing 214200, P. R. China
| | - Zhongpeng Guo
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing 214200, P. R. China
| | - Yu Xin
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Zhenghua Gu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Yi Shi
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Ting Yang
- Wuxi Food Safety Inspection and Test Center, Technology Innovation Center of Special Food for State Market Regulation, Wuxi 214122, Jiangsu, P. R. China
| | - Youran Li
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Guiyang Shi
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Zhongyang Ding
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Liang Zhang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
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Stoklosa RJ, García-Negrón V, Latona RJ, Toht M. Limiting acetoin generation during 2,3-butanediol fermentation with Paenibacillus polymyxa using lignocellulosic hydrolysates. BIORESOURCE TECHNOLOGY 2024; 393:130053. [PMID: 37993069 DOI: 10.1016/j.biortech.2023.130053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/03/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
Recent decarbonization efforts have led to interests in producing more bio-based chemicals. One attractive compound produced biochemically is the platform chemical known as 2,3-butanediol (2,3-BDO). In this work a mild alkaline pretreatment using sodium carbonate was performed on corn stover (CS) and switchgrass (SG) to generate hydrolysates for fermentation with the 2,3-BDO producer bacteria strain Paenibacillius polymyxa. Enzymatic hydrolysis performed on the pretreated CS and SG produced theoretical sugar yields of 80 % and 95 % for glucose and xylose, respectively. Fermentations with P. polymxya conducted in anaerobic bottles produced 2,3-BDO reaching concentrations ranging from 14 to 18 g/L with negligible conversion into acetoin. Bioreactor fermentations using the hydrolysate media generated up to 43 g/L and 34 g/L of 2,3-BDO from pretreated CS and SG, respectively, within 24 h of fermentation. However, 2,3-BDO product output was reduced by 40-50 % over the remainder of the fermentation due to conversion into acetoin caused by glucose depletion.
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Affiliation(s)
- Ryan J Stoklosa
- Sustainable Biofuels and Co-Products Research Unit, Eastern Regional Research Center, USDA-ARS, Wyndmoor, PA, United States.
| | - Valerie García-Negrón
- Sustainable Biofuels and Co-Products Research Unit, Eastern Regional Research Center, USDA-ARS, Wyndmoor, PA, United States
| | - Renee J Latona
- Sustainable Biofuels and Co-Products Research Unit, Eastern Regional Research Center, USDA-ARS, Wyndmoor, PA, United States
| | - Matthew Toht
- Sustainable Biofuels and Co-Products Research Unit, Eastern Regional Research Center, USDA-ARS, Wyndmoor, PA, United States
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Ahuja V, Chauhan S, Purewal SS, Mehariya S, Patel AK, Kumar G, Megharaj M, Yang YH, Bhatia SK. Microbial alchemy: upcycling of brewery spent grains into high-value products through fermentation. Crit Rev Biotechnol 2024:1-19. [PMID: 38163946 DOI: 10.1080/07388551.2023.2286430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/02/2023] [Indexed: 01/03/2024]
Abstract
Spent grains are one of the lignocellulosic biomasses available in abundance, discarded by breweries as waste. The brewing process generates around 25-30% of waste in different forms and spent grains alone account for 80-85% of that waste, resulting in a significant global waste volume. Despite containing essential nutrients, i.e., carbohydrates, fibers, proteins, fatty acids, lipids, minerals, and vitamins, efficient and economically viable valorization of these grains is lacking. Microbial fermentation enables the valorization of spent grain biomass into numerous commercially valuable products used in energy, food, healthcare, and biomaterials. However, the process still needs more investigation to overcome challenges, such as transportation, cost-effective pretreatment, and fermentation strategy. to lower the product cost and to achieve market feasibility and customer affordability. This review summarizes the potential of spent grains valorization via microbial fermentation and associated challenges.
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Affiliation(s)
- Vishal Ahuja
- University Institute of Biotechnology, Chandigarh University, Mohali, India
- University Centre for Research and Development, Chandigarh University, Mohali, India
| | - Shikha Chauhan
- University Institute of Biotechnology, Chandigarh University, Mohali, India
| | - Sukhvinder Singh Purewal
- University Institute of Biotechnology, Chandigarh University, Mohali, India
- University Centre for Research and Development, Chandigarh University, Mohali, India
| | | | - Anil Kumar Patel
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Norway
| | - Mallavarapu Megharaj
- Global Centre for Environmental remediation, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, Australia
| | - Yung-Hun Yang
- Institute for Ubiquitous Information Technology and Applications, Seoul, Republic of Korea
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Shashi Kant Bhatia
- Institute for Ubiquitous Information Technology and Applications, Seoul, Republic of Korea
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
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Yuan P, Chen Z, Xu M, Cai W, Liu Z, Sun D. Microbial cell factories using Paenibacillus: status and perspectives. Crit Rev Biotechnol 2023:1-17. [PMID: 38105503 DOI: 10.1080/07388551.2023.2289342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/22/2023] [Indexed: 12/19/2023]
Abstract
Considered a "Generally Recognized As Safe" (GRAS) bacterium, the plant growth-promoting rhizobacterium Paenibacillus has been widely applied in: agriculture, medicine, industry, and environmental remediation. Paenibacillus species not only accelerate plant growth and degrade toxic substances in wastewater and soil but also produce industrially-relevant enzymes and antimicrobial peptides. Due to a lack of genetic manipulation tools and methods, exploitation of the bioresources of naturally isolated Paenibacillus species has long been limited. Genetic manipulation tools and methods continue to improve in Paenibacillus, such as shuttle plasmids, promoters, and genetic tools of CRISPR. Furthermore, genetic transformation systems develop gradually, including: penicillin-mediated transformation, electroporation, and magnesium amino acid-mediated transformation. As genetic manipulation methods of homologous recombination and CRISPR-mediated editing system have developed gradually, Paenibacillus has come to be regarded as a promising microbial chassis for biomanufacturing, expanding its application scope, such as: industrial enzymes, bioremediation and bioadsorption, surfactants, and antibacterial agents. In this review, we describe the applications of Paenibacillus bioproducts, and then discuss recent advances and future challenges in the development of genetic manipulation systems in this genus. This work highlights the potential of Paenibacillus as a new microbial chassis for mining bioresources.
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Affiliation(s)
- Panhong Yuan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Ziyan Chen
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Mengtao Xu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Wenfeng Cai
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Zhizhi Liu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Dongchang Sun
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
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Keo-Oudone C, Phommachan K, Suliya O, Nurcholis M, Bounphanmy S, Kosaka T, Yamada M. Highly efficient production of 2,3-butanediol from xylose and glucose by newly isolated thermotolerant Cronobacter sakazakii. BMC Microbiol 2022; 22:164. [PMID: 35751041 PMCID: PMC9229127 DOI: 10.1186/s12866-022-02577-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/01/2022] [Indexed: 11/16/2022] Open
Abstract
Background 2,3-Butanediol (2,3-BD), a valuable compound used for chemicals, cosmetics, pesticides and pharmaceuticals, has been produced by various microbes. However, no high-temperature fermentation of the compound at high productivity has been reported. Methods Thermotolerant xylose-utilizing microbes were isolated from 6 different districts in Laos and screened for a low accumulation of xylitol in a xylose medium at 37 ˚C. One isolate was found to produce 2,3-BD and identified by 16S rDNA sequencing. The 2,3-BD fermentation capacity was investigated at different temperatures using xylose and glucose as carbon sources, and the fermentation parameters were determined by a high-performance liquid chromatography system. Results By screening for a low accumulation of xylitol in a xylose medium, one isolate that accumulated almost no xylitol was obtained. Further analyses revealed that the isolate is Cronobacter sakazakii and that it has the ability to produce 2,3-BD at high temperatures. When xylose and glucose were used, this strain, named C. sakazakii OX-25, accumulated 2,3-BD in a short period before the complete consumption of these sugars and then appeared to convert 2,3-BD to acetoin. The optimum temperature of the 2,3-BD fermentation was 42 ˚C to 45 ˚C, and the maximum yield of 2,3-BD was 0.3 g/g at 12 h in 20 g/l xylose medium and 0.4 g/g at 6 h in 20 g/l glucose medium at 42 ˚C. The 2,3-BD productivity of the strain was higher than the 2,3-BD productivities of other non-genetically engineered microorganisms reported previously, and the highest productivity was 0.6 g/l·h and 1.2 g/l·h for xylose and glucose, respectively. Conclusions Among thermotolerant microbes isolated in Laos, we discovered a strain, C. sakazakii OX-25, that can convert xylose and glucose to 2,3-BD with high efficiency and high productivity at high temperatures, suggesting that C. sakazakii OX-25 has the potential for industrial application to produce 2,3-BD as an important platform chemical. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-022-02577-z.
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Affiliation(s)
- Chansom Keo-Oudone
- Department of Biology, Faculty of Natural Science, National University of Laos, Lao PDR, 7322, Vientiane, Laos
| | - Koudkeo Phommachan
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 753-8515, Yamaguchi, Japan
| | - Orathai Suliya
- Department of Biology, Faculty of Natural Science, National University of Laos, Lao PDR, 7322, Vientiane, Laos
| | - Mochamad Nurcholis
- Department of Food Science and Technology, Faculty of Agricultural Technology, Brawijaya University, 65145, Malang, Indonesia
| | - Somchanh Bounphanmy
- Department of Biology, Faculty of Natural Science, National University of Laos, Lao PDR, 7322, Vientiane, Laos
| | - Tomoyuki Kosaka
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 753-8515, Yamaguchi, Japan.,Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University, 753-8515, Yamaguchi, Japan.,Research Center for Thermotolerant Microbial Resources, Yamaguchi University, 753-8515, Yamaguchi, Japan
| | - Mamoru Yamada
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 753-8515, Yamaguchi, Japan. .,Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University, 753-8515, Yamaguchi, Japan. .,Research Center for Thermotolerant Microbial Resources, Yamaguchi University, 753-8515, Yamaguchi, Japan.
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