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Guo C, Wen J, Sun Y, Liang G, Wang Z, Pan L, Huang J, Liao Y, Wang Z, Chen Q, Mu P, Deng Y. Pyrroloquinoline quinone production defines the ability of Devosia species to degrade deoxynivalenol. Food Funct 2024; 15:6134-6146. [PMID: 38767386 DOI: 10.1039/d4fo00024b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Deoxynivalenol (DON) is a prevalent mycotoxin that primarily contaminates cereal crops and animal feed, posing a significant risk to human and animal health. In recent years, an increasing number of Devosia strains have been identified as DON degradation bacteria, and significant efforts have been made to explore their potential applications in the food and animal feed industries. However, the characteristics and mechanisms of DON degradation in Devosia strains are still unclear. In this study, we identified a novel DON degrading bacterium, Devosia sp. D-G15 (D-G15), from soil samples. The major degradation products of DON in D-G15 were 3-keto-DON, 3-epi-DON and an unidentified product, compound C. The cell viability assay showed that the DON degradation product of D-G15 revealed significantly reduced toxicity to HEK293T cells compared to DON. Three enzymes for DON degradation were further identified, with G15-DDH converting DON to 3-keto-DON and G15-AKR1/G15-AKR6 reducing 3-keto-DON to 3-epi-DON. Interestingly, genome comparison of Devosia strains showed that the pyrroloquinoline quinone (PQQ) synthesis gene cluster is a unique feature of DON degradation strains. Subsequently, adding PQQ to the cultural media of Devosia strains without PQQ synthesis genes endowed them with DON degradation activity. Furthermore, a novel DON-degrading enzyme G13-DDH (<30% homology with known DON dehydrogenase) was identified from a Devosia strain that lacks PQQ synthesis ability. In summary, a novel DON degrading Devosia strain and its key enzymes were identified, and PQQ production was found as a distinct feature among Devosia strains with DON degradation activity, which is important for developing Devosia strain-based technology in DON detoxification.
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Affiliation(s)
- Chongwen Guo
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Jikai Wen
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Yu Sun
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Guoqiang Liang
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Zijiao Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Lulu Pan
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Jiarun Huang
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Yuanxin Liao
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Zeyuan Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Qingmei Chen
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Peiqiang Mu
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Yiqun Deng
- State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
- Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, P. R. China
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Qiu Y, Yan J, Yue A, Lu Z, Tan J, Guo H, Ding Y, Lyu F, Fu Y. A comprehensive review of biodetoxification of trichothecenes: Mechanisms, limitations and novel strategies. Food Res Int 2024; 184:114275. [PMID: 38609252 DOI: 10.1016/j.foodres.2024.114275] [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] [Received: 12/27/2023] [Revised: 02/21/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024]
Abstract
Trichothecenes are Fusarium mycotoxins with sesquiterpenoid structure, which are widely occurred in grains. Due to high efficiency and environmental friendliness, biological detoxification methods have been of great interest to treat this global food and feed safety concern. This review summarized the biological detoxification methods of trichothecenes from three aspects, biosorption, biotransformation and biotherapy. The detoxification efficiency, characteristics, mechanisms and limitations of different strategies were discussed in detail. Computer-aided design will bring a new research paradigm for more efficient discovery of biodetoxifier. Integrating different detoxification approaches assisted with computational tools will become a promising research direction in the future, which will help to maximize the detoxification effect, or provide precise detoxification programs for the coexistence of various toxins at different levels in actual production. In addition, technical and regulatory issues in practical application were also discussed. These findings contribute to the exploration of efficient, applicable and sustainable methods for trichothecenes detoxification, ensuring the safety of food and feed to reduce the deleterious effects of trichothecenes on humans and animals.
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Affiliation(s)
- Yue Qiu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; Tech Bank Food Co Ltd, Yuyao City, Zhejiang 315400, China
| | - Jiaping Yan
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Aodong Yue
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhongchao Lu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jianzhuang Tan
- Tech Bank Food Co Ltd, Yuyao City, Zhejiang 315400, China
| | - Hong Guo
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Fei Lyu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Yan Fu
- Tech Bank Food Co Ltd, Yuyao City, Zhejiang 315400, China
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3
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He WJ, Yang P, Huang T, Liu YF, Zhang YW, Zhang WM, Zhang TT, Zheng MR, Ma L, Zhao CX, Li HP, Liao YC, Wu AB, Zhang JB. Detoxifying bacterial genes for deoxynivalenol epimerization confer durable resistance to Fusarium head blight in wheat. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38593377 DOI: 10.1111/pbi.14353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/26/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Fusarium head blight (FHB) and the presence of mycotoxin deoxynivalenol (DON) pose serious threats to wheat production and food safety worldwide. DON, as a virulence factor, is crucial for the spread of FHB pathogens on plants. However, germplasm resources that are naturally resistant to DON and DON-producing FHB pathogens are inadequate in plants. Here, detoxifying bacteria genes responsible for DON epimerization were used to enhance the resistance of wheat to mycotoxin DON and FHB pathogens. We characterized the complete pathway and molecular basis leading to the thorough detoxification of DON via epimerization through two sequential reactions in the detoxifying bacterium Devosia sp. D6-9. Epimerization efficiently eliminates the phytotoxicity of DON and neutralizes the effects of DON as a virulence factor. Notably, co-expressing of the genes encoding quinoprotein dehydrogenase (QDDH) for DON oxidation in the first reaction step, and aldo-keto reductase AKR13B2 for 3-keto-DON reduction in the second reaction step significantly reduced the accumulation of DON as virulence factor in wheat after the infection of pathogenic Fusarium, and accordingly conferred increased disease resistance to FHB by restricting the spread of pathogenic Fusarium in the transgenic plants. Stable and improved resistance was observed in greenhouse and field conditions over multiple generations. This successful approach presents a promising avenue for enhancing FHB resistance in crops and reducing mycotoxin contents in grains through detoxification of the virulence factor DON by exogenous resistance genes from microbes.
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Affiliation(s)
- Wei-Jie He
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Peng Yang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- Jiangsu Ruihua Agricultural Science and Technology Co., Ltd., Suqian, China
| | - Tao Huang
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yu-Fan Liu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yu-Wei Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Wen-Min Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tian-Tian Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Meng-Ru Zheng
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ling Ma
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chang-Xing Zhao
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - He-Ping Li
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yu-Cai Liao
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ai-Bo Wu
- SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jing-Bo Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Ma B, Niu J, Zhu H, Chi H, Lu Z, Lu F, Zhu P. Engineering substrate specificity of quinone-dependent dehydrogenases for efficient oxidation of deoxynivalenol to 3-keto-deoxynivalenol. Int J Biol Macromol 2024; 264:130484. [PMID: 38431002 DOI: 10.1016/j.ijbiomac.2024.130484] [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] [Received: 01/03/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
The oxidative reaction of Fusarium mycotoxin deoxynivalenol (DON) using the dehydrogenase is a desirable strategy and environmentally friendly to mitigate its toxicity. However, a critical issue for these dehydrogenases shows widespread substrate promiscuity. In this study, we conducted pocket reshaping of Devosia strain A6-243 pyrroloquinoline quinone (PQQ)-dependent dehydrogenase (DADH) on the basis of protein structure and kinetic analysis of substrate libraries to improve preference for particular substrate DON (10a). The variant presented an increased preference for substrate 10a and enhanced catalytic efficiency. A 4.7-fold increase in preference for substrate 10a was observed. Kinetic profiling and molecular dynamics (MD) simulations provided insights into the enhanced substrate specificity and activity. Moreover, the variant exhibited stronger conversion of substrate 10a to 3-keto-DON compared to the wild DADH. Overall, this study provides a feasible protocol for the redesign of PQQ-dependent dehydrogenases with favourable substrate specificity and catalytic activity, which is desperately needed for DON antidote development.
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Affiliation(s)
- Bin Ma
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiafeng Niu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huibing Chi
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
| | - Ping Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Liu Y, Ma M, Tang Y, Huang Z, Guo Y, Ma Q, Zhao L. A NADPH-Dependent Aldo/Keto Reductase Is Responsible for Detoxifying 3-Keto-Deoxynivalenol to 3- epi-Deoxynivalenol in Pelagibacterium halotolerans ANSP101. Foods 2024; 13:1064. [PMID: 38611368 PMCID: PMC11011506 DOI: 10.3390/foods13071064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Deoxynivalenol (DON), primarily generated by Fusarium species, often exists in agricultural products. It can be transformed to 3-epi-deoxynivalenol (3-epi-DON), with a relatively low toxicity, via two steps. DDH in Pelagibacterium halotolerans ANSP101 was proved to convert DON to 3-keto-deoxynivalenol (3-keto-DON). In the present research, AKR4, a NADPH-dependent aldo/keto reductase from P. halotolerans ANSP101, was identified to be capable of converting 3-keto-DON into 3-epi-DON. Our results demonstrated that AKR4 is clearly a NADPH-dependent enzyme, for its utilization of NADPH is higher than that of NADH. AKR4 functions at a range of pH 5-10 and temperatures of 20-60 °C. AKR4 is able to degrade 89% of 3-keto-DON in 90 min at pH 7 and 50 °C with NADPH as the cofactor. The discovery of AKR4, serving as an enzyme involved in the final step in DON degradation, might provide an option for the final detoxification of DON in food and feed.
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Affiliation(s)
- Yanrong Liu
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
| | - Mingxin Ma
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
| | - Yu Tang
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
| | - Zhenqian Huang
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
| | - Yongpeng Guo
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China;
| | - Qiugang Ma
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
| | - Lihong Zhao
- State Key Laboratory of Animal Nutrition and Feeding, Poultry Nutrition and Feed Technology Innovation Team, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (Y.L.); (M.M.); (Y.T.); (Z.H.); (Q.M.)
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6
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Yao F, Du Y, Tian S, Chang G, Zhang Y, Zhu R, Cai C, Shao S, Zhou T. Identification and characterization of Achromobacter spanius P-9 and elucidation of its deoxynivalenol-degrading potential. Arch Microbiol 2024; 206:178. [PMID: 38498224 DOI: 10.1007/s00203-024-03864-1] [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] [Received: 11/06/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 03/20/2024]
Abstract
Deoxynivalenol (DON) poses significant challenges due to its frequent contamination of grains and associated products. Microbial strategies for mitigating DON toxicity showed application potential. Eight bacterial isolates with DON degradation activity over 5% were obtained from various samples of organic fertilizer in this study. One of the isolates emerged as a standout, demonstrating a substantial degradation capability, achieving a 99.21% reduction in DON levels. This isolate, underwent thorough morphological, biochemical, and molecular characterization to confirm its identity, and was identified as a new strain of Achromobacter spanius P-9. Subsequent evaluations revealed that the strain P-9 retains its degradation activity after a 24-h incubation, reaching optimal performance at 35 °C with a pH of 8.0. Further studies indicated that Ca2+ ions enhance the degradation process, whereas Zn2+ ions exert an inhibitory effect. This is the pioneering report of DON degradation by Achromobacter spanius, illuminating its prospective utility in addressing DON contamination challenges.
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Affiliation(s)
- Feng Yao
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Yaowen Du
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Siyi Tian
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Guoli Chang
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Yanping Zhang
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Ruiyu Zhu
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Chenggang Cai
- College of Biological and Chemical Engineering, Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Zhejiang University of Science and Technology, Hangzhou, 310023, China.
| | - Suqin Shao
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, N1G 5C9, Canada.
| | - Ting Zhou
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, N1G 5C9, Canada
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7
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Shi Y, Xu W, Ni D, Zhang W, Guang C, Mu W. Identification and application of a novel deoxynivalenol-degrading enzyme from Youhaiella tibetensis. Food Chem 2024; 435:137609. [PMID: 37783127 DOI: 10.1016/j.foodchem.2023.137609] [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] [Received: 06/05/2023] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 10/04/2023]
Abstract
Deoxynivalenol (DON) poses a significant threat to human health due to its widespread distribution and biological toxicity. Here, we identified a novel DON-degrading enzyme from Youhaiella tibetensis (YoDDH). YoDDH exhibited the highest activity against DON at pH 4.5 and 40 ℃, in the presence of Ca2+ and the pyrroloquinoline quinone (PQQ). Additionally, YoDDH displayed remarkable thermostability at 40 ℃, with a half-life of 24 h and a Tm value of 48.5 ℃. Notably, phenazine methosulfate (PMS) and 2,6-dichlorophenolindophenol (DCPIP) can also serve as electron acceptors for YoDDH. After incubation in the optimal conditions for 3 h, YoDDH degraded 73 % of DON (100 μM) finally. The kcat and kcat /Km of YoDDH towards DON was determined as 1.65 s-1 and 1526 M-1·s-1 in the presence of PMS. The 3-keto-DON was verified as the degradation product. This identified YoDDH presents a promising candidate for DON decontamination in the food and feed industry.
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Affiliation(s)
- Yan Shi
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Dawei Ni
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
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8
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Niu J, Yan R, Zhou H, Ma B, Lu Z, Meng F, Lu F, Zhu P. Self-cascade deoxynivalenol detoxification by an artificial enzyme with bifunctions of dehydrogenase and aldo/keto reductase from genome mining. Int J Biol Macromol 2024; 261:129512. [PMID: 38246466 DOI: 10.1016/j.ijbiomac.2024.129512] [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] [Received: 10/09/2023] [Revised: 12/05/2023] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
Due to the severe health risks for human and animal caused by the intake of toxic deoxynivalenol (DON) derived from Fusarium species, elimination DON in food and feed has been initiated as a critical issue. Enzymatic cascade catalysis by dehydrogenase and aldo-keto reductase represents a fascinating strategy for DON detoxification. Here, one quinone-dpendent alcohol dehydrogenase DADH oxidized DON into less-toxic 3-keto-DON and NADPH-dependent aldo-keto reductase AKR13B3 reduced 3-keto-DON into relatively non-toxic 3-epi-DON were identified from Devosia strain A6-243, indicating that degradation of DON on C3 are two-step sequential cascade processes. To establish the bifunctions, fusion enzyme linking DADH and AKR13B3 was successfully assembled to promote one-step DON degradations with accelerated specific activity and efficiency, resulting 93.29 % of DON removal rate in wheat sample. Three-dimensional simulation analysis revealed that the bifunctional enzyme forms an artificial intramolecular channel to minimize the distance of intermediate from DADH to AKR13B3 for two-step enzymatic reactions, and thereby accelerates this enzymatic process. As the first report of directing single step DON detoxification by an interesting bifunctional artificial enzyme, this work revealed a facile and eco-friendly approach to detoxify DON with application potential and gave valuable insights into execute other mycotoxin detoxification for ensuring food safety.
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Affiliation(s)
- Jiafeng Niu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruxue Yan
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huimin Zhou
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Ma
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fanqiang Meng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
| | - Ping Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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9
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Niu J, Ma B, Shen J, Chi H, Zhou H, Lu Z, Lu F, Zhu P. Structure-Guided Steric Hindrance Engineering of Devosia Strain A6-243 Quinone-Dependent Dehydrogenase to Enhance Its Catalytic Efficiency. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:549-558. [PMID: 38153089 DOI: 10.1021/acs.jafc.3c07179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Deoxynivalenol (DON), the most widely distributed mycotoxin worldwide, causes severe health risks for humans and animals. Quinone-dependent dehydrogenase derived from Devosia strain A6-243 (DADH) can degrade DON into less toxic 3-keto-DON and then aldo-keto reductase AKR13B3 can reduce 3-keto-DON into relatively nontoxic 3-epi-DON. However, the poor catalytic efficiency of DADH made it unsuitable for practical applications, and it has become the rate-limiting step of the two-step enzymatic cascade catalysis. Here, structure-guided steric hindrance engineering was employed to enhance the catalytic efficiency of DADH. After the steric hindrance engineering, the best mutant, V429G/N431V/T432V/L434V/F537A (M5-1), showed an 18.17-fold increase in specific activity and an 11.04-fold increase in catalytic efficiency (kcat/Km) compared with that of wild-type DADH. Structure-based computational analysis provided information on the increased catalytic efficiency in the directions that attenuated steric hindrance, which was attributed to the reshaped substrate-binding pocket with an expanded catalytic binding cavity and a favorable attack distance. Tunnel analysis suggested that reshaping the active cavity by mutation might alter the shape and size of the enzyme tunnels or form one new enzyme tunnel, which might contribute to the improved catalytic efficiency of M5-1. These findings provide a promising strategy to enhance the catalytic efficiency by steric hindrance engineering.
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Affiliation(s)
- Jiafeng Niu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Ma
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Juan Shen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huibing Chi
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huimin Zhou
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ping Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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Fang J, Sheng L, Ye Y, Ji J, Sun J, Zhang Y, Sun X. Recent advances in biosynthesis of mycotoxin-degrading enzymes and their applications in food and feed. Crit Rev Food Sci Nutr 2023:1-17. [PMID: 38108665 DOI: 10.1080/10408398.2023.2294166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Mycotoxins are secondary metabolites produced by fungi in food and feed, which can cause serious health problems. Bioenzymatic degradation is gaining increasing popularity due to its high specificity, gentle degradation conditions, and environmental friendliness. We reviewed recently reported biosynthetic mycotoxin-degrading enzymes, traditional and novel expression systems, enzyme optimization strategies, food and feed applications, safety evaluation of both degrading enzymes and degradation products, and commercialization potentials. Special emphasis is given to the novel expression systems, advanced optimization strategies, and safety considerations for industrial use. Over ten types of recombinases such as oxidoreductase and hydrolase have been studied in the enzymatic hydrolysis of mycotoxins. Besides traditional expression system of Escherichia coli and yeasts, these enzymes can also be expressed in novel systems such as Bacillus subtilis and lactic acid bacteria. To meet the requirements of industrial applications in terms of degradation efficacy and stability, genetic engineering and computational tools are used to optimize enzymatic expression. Currently, registration and technical difficulties have restricted commercial application of mycotoxin-degrading enzymes. To overcome these obstacles, systematic safety evaluation of both biosynthetic enzymes and their degradation products, in-depth understanding of degradation mechanisms and a comprehensive evaluation of their impact on food and feed quality are urgently needed.
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Affiliation(s)
- Jinpei Fang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Lina Sheng
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Yongli Ye
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Jian Ji
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Jiadi Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Yinzhi Zhang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
| | - Xiulan Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, P.R. China
- Yixing Institute of Food and Biotechnology Co, Ltd, Yixing, Jiangsu, P.R China
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11
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Tu Y, Liu S, Cai P, Shan T. Global distribution, toxicity to humans and animals, biodegradation, and nutritional mitigation of deoxynivalenol: A review. Compr Rev Food Sci Food Saf 2023; 22:3951-3983. [PMID: 37421323 DOI: 10.1111/1541-4337.13203] [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] [Received: 03/13/2023] [Revised: 05/18/2023] [Accepted: 06/05/2023] [Indexed: 07/10/2023]
Abstract
Deoxynivalenol (DON) is one of the main types of B trichothecenes, and it causes health-related issues in humans and animals and imposes considerable challenges to food and feed safety globally each year. This review investigates the global hazards of DON, describes the occurrence of DON in food and feed in different countries, and systematically uncovers the mechanisms of the various toxic effects of DON. For DON pollution, many treatments have been reported on the degradation of DON, and each of the treatments has different degradation efficacies and degrades DON by a distinct mechanism. These treatments include physical, chemical, and biological methods and mitigation strategies. Biodegradation methods include microorganisms, enzymes, and biological antifungal agents, which are of great research significance in food processing because of their high efficiency, low environmental hazards, and drug resistance. And we also reviewed the mechanisms of biodegradation methods of DON, the adsorption and antagonism effects of microorganisms, and the different chemical transformation mechanisms of enzymes. Moreover, nutritional mitigation including common nutrients (amino acids, fatty acids, vitamins, and microelements) and plant extracts was discussed in this review, and the mitigation mechanism of DON toxicity was elaborated from the biochemical point of view. These findings help explore various approaches to achieve the best efficiency and applicability, overcome DON pollution worldwide, ensure the sustainability and safety of food processing, and explore potential therapeutic options with the ability to reduce the deleterious effects of DON in humans and animals.
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Affiliation(s)
- Yuang Tu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
- Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, Zhejiang, PR China
| | - Shiqi Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
- Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, Zhejiang, PR China
| | - Peiran Cai
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
- Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, Zhejiang, PR China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, China
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
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Li D, Liang G, Mu P, Lin J, Huang J, Guo C, Li Y, Lin R, Jiang J, Wu J, Deng Y, Wen J. Improvement of catalytic activity of sorbose dehydrogenase for deoxynivalenol degradation by rational design. Food Chem 2023; 423:136274. [PMID: 37159968 DOI: 10.1016/j.foodchem.2023.136274] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 02/27/2023] [Accepted: 04/27/2023] [Indexed: 05/11/2023]
Abstract
Deoxynivalenol (DON) is the most frequently contaminated mycotoxin in food and feed worldwide, causing significant economic losses and health risks. Physical and chemical detoxification methods are widely used, but they cannot efficiently and specifically remove DON. In the study, the combination of bioinformatics screening and experimental verification confirmed that sorbose dehydrogenase (SDH) can effectively convert DON to 3-keto-DON and a substance that removes four hydrogen atoms for DON. Through rational design, the Vmax of the mutants F103L and F103A were increased by 5 and 23 times, respectively. Furthermore, we identified catalytic sites W218 and D281. SDH and its mutants have broad application conditions, including temperature ranges of 10-45 °C and pH levels of 4-9. Additionally, the half-lives of F103A at 90 °C (processing temperature) and 30 °C (storage temperature) were 60.1 min and 100.5 d, respectively. These results suggest that F103A has significant potential in the detoxification application of DON.
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Affiliation(s)
- Danyang Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Guoqiang Liang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Peiqiang Mu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Jinquan Lin
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Jiarun Huang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Chongwen Guo
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Yang Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Ruqin Lin
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Jun Jiang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Jun Wu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Yiqun Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Jikai Wen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
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13
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Statsyuk NV, Popletaeva SB, Shcherbakova LA. Post-Harvest Prevention of Fusariotoxin Contamination of Agricultural Products by Irreversible Microbial Biotransformation: Current Status and Prospects. BIOTECH 2023; 12:biotech12020032. [PMID: 37218749 DOI: 10.3390/biotech12020032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 04/28/2023] [Accepted: 04/29/2023] [Indexed: 05/24/2023] Open
Abstract
Biological degradation of mycotoxins is a promising environmentally-friendly alternative to chemical and physical detoxification methods. To date, a lot of microorganisms able to degrade them have been described; however, the number of studies determining degradation mechanisms and irreversibility of transformation, identifying resulting metabolites, and evaluating in vivo efficiency and safety of such biodegradation is significantly lower. At the same time, these data are crucial for the evaluation of the potential of the practical application of such microorganisms as mycotoxin-decontaminating agents or sources of mycotoxin-degrading enzymes. To date, there are no published reviews, which would be focused only on mycotoxin-degrading microorganisms with the proved irreversible transformation of these compounds into less toxic compounds. In this review, the existing information about microorganisms able to efficiently transform the three most common fusariotoxins (zearalenone, deoxinyvalenol, and fumonisin B1) is presented with allowance for the data on the corresponding irreversible transformation pathways, produced metabolites, and/or toxicity reduction. The recent data on the enzymes responsible for the irreversible transformation of these fusariotoxins are also presented, and the promising future trends in the studies in this area are discussed.
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Affiliation(s)
- Natalia V Statsyuk
- All-Russian Research Institute of Phytopathology, 143050 Bolshie Vyazemy, Russia
| | - Sophya B Popletaeva
- All-Russian Research Institute of Phytopathology, 143050 Bolshie Vyazemy, Russia
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Tang Y, Xiao D, Liu C. Two-Step Epimerization of Deoxynivalenol by Quinone-Dependent Dehydrogenase and Candida parapsilosis ACCC 20221. Toxins (Basel) 2023; 15:toxins15040286. [PMID: 37104224 PMCID: PMC10146952 DOI: 10.3390/toxins15040286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/04/2023] [Accepted: 04/13/2023] [Indexed: 04/28/2023] Open
Abstract
Deoxynivalenol (DON), one of the main mycotoxins with enteric toxicity, genetic toxicity, and immunotoxicity, and is widely found in corn, barley, wheat, and rye. In order to achieve effective detoxification of DON, the least toxic 3-epi-DON (1/357th of the toxicity of DON) was chosen as the target for degradation. Quinone-dependent dehydrogenase (QDDH) reported from Devosia train D6-9 detoxifies DON by converting C3-OH to a ketone group with toxicity of less than 1/10 that of DON. In this study, the recombinant plasmid pPIC9K-QDDH was constructed and successfully expressed in Pichia pastoris GS115. Within 12 h, recombinant QDDH converted 78.46% of the 20 μg/mL DON to 3-keto-DON. Candida parapsilosis ACCC 20221 was screened for its activity in reducing 86.59% of 3-keto-DON within 48 h; its main products were identified as 3-epi-DON and DON. In addition, a two-step method was performed for epimerizing DON: 12 h catalysis by recombinant QDDH and 6 h transformation of the C. parapsilosis ACCC 20221 cell catalyst. The production rates of 3-keto-DON and 3-epi-DON were 51.59% and 32.57%, respectively, after manipulation. Through this study, effective detoxification of 84.16% of DON was achieved, with the products being mainly 3-keto-DON and 3-epi-DON.
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Affiliation(s)
- Yuqian Tang
- School of Food Science and Engineering, South China University of Technology, Wu Shan, Guangzhou 510640, China
| | - Dingna Xiao
- School of Food Science and Engineering, South China University of Technology, Wu Shan, Guangzhou 510640, China
| | - Chendi Liu
- School of Food Science and Engineering, South China University of Technology, Wu Shan, Guangzhou 510640, China
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15
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Tian Y, Zhang D, Cai P, Lin H, Ying H, Hu QN, Wu A. Elimination of Fusarium mycotoxin deoxynivalenol (DON) via microbial and enzymatic strategies: Current status and future perspectives. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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