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Zhao Y, Liang H, Zhang J, Chen Y, Dhital YP, Zhao T, Wang Z. Isolation and Characterization of Potassium-Solubilizing Rhizobacteria (KSR) Promoting Cotton Growth in Saline-Sodic Regions. Microorganisms 2024; 12:1474. [PMID: 39065241 PMCID: PMC11279176 DOI: 10.3390/microorganisms12071474] [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: 06/19/2024] [Revised: 07/06/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Cotton is highly sensitive to potassium, and Xinjiang, China's leading cotton-producing region, faces a severe challenge due to reduced soil potassium availability. Biofertilizers, particularly potassium-solubilizing rhizobacteria (KSR), convert insoluble potassium into plant-usable forms, offering a sustainable solution for evergreen agriculture. This study isolated and characterized KSR from cotton, elucidated their potassium solubilization mechanisms, and evaluated the effects of inoculating KSR strains on cotton seedlings. Twenty-three KSR strains were isolated from cotton rhizosphere soil using modified Aleksandrov medium. Their solubilizing capacities were assessed in a liquid medium. Strain A10 exhibited the highest potassium solubilization capacity (21.8 ppm) by secreting organic acids such as lactic, citric, acetic, and succinic acid, lowering the pH and facilitating potassium release. A growth curve analysis and potassium solubilization tests of A10 under alkali stress showed its vigorous growth and maintained solubilization ability at pH 8-9, with significant inhibition at pH 10. Furthermore, 16S rRNA sequencing identified strain A10 as Pseudomonas aeruginosa. Greenhouse pot experiments showed that inoculating cotton plants with strain A10 significantly increased plant height and promoted root growth. This inoculation also enhanced dry biomass accumulation in both the aerial parts and root systems of the plants, while reducing the root-shoot ratio. These results suggest that Pseudomonas aeruginosa A10 has potential as a biofertilizer, offering a new strategy for sustainable agriculture.
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Affiliation(s)
- Yue Zhao
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Hongbang Liang
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Jihong Zhang
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Yu Chen
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Yam Prasad Dhital
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Tao Zhao
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
| | - Zhenhua Wang
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Y.Z.); (H.L.); (J.Z.); (Y.C.); (Y.P.D.); (T.Z.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
- Technology Innovation Center for Agricultural Water & Fertilizer Efficiency Equipment of Xinjiang Production & Construction Group, Shihezi 832000, China
- Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China
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Lu J, Liu Y, Song M, Xi Y, Yang H, Liu W, Li X, Norvienyeku J, Zhang Y, Miao W, Lin C. The CsPbs2-interacting protein oxalate decarboxylase CsOxdC3 modulates morphosporogenesis, virulence, and fungicide resistance in Colletotrichum siamense. Microbiol Res 2024; 284:127732. [PMID: 38677265 DOI: 10.1016/j.micres.2024.127732] [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: 07/04/2023] [Revised: 04/07/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
The HOG MAPK pathway mediates diverse cellular and physiological processes, including osmoregulation and fungicide sensitivity, in phytopathogenic fungi. However, the molecular mechanisms underlying HOG MAPK pathway-associated stress homeostasis and pathophysiological developmental events are poorly understood. Here, we demonstrated that the oxalate decarboxylase CsOxdC3 in Colletotrichum siamense interacts with the protein kinase kinase CsPbs2, a component of the HOG MAPK pathway. The expression of the CsOxdC3 gene was significantly suppressed in response to phenylpyrrole and tebuconazole fungicide treatments, while that of CsPbs2 was upregulated by phenylpyrrole and not affected by tebuconazole. We showed that targeted gene deletion of CsOxdC3 suppressed mycelial growth, reduced conidial length, and triggered a marginal reduction in the sporulation characteristics of the ΔCsOxdC3 strains. Interestingly, the ΔCsOxdC3 strain was significantly sensitive to fungicides, including phenylpyrrole and tebuconazole, while the CsPbs2-defective strain was sensitive to tebuconazole but resistant to phenylpyrrole. Additionally, infection assessment revealed a significant reduction in the virulence of the ΔCsOxdC3 strains when inoculated on the leaves of rubber tree (Hevea brasiliensis). From these observations, we inferred that CsOxdC3 crucially modulates HOG MAPK pathway-dependent processes, including morphogenesis, stress homeostasis, fungicide resistance, and virulence, in C. siamense by facilitating direct physical interactions with CsPbs2. This study provides insights into the molecular regulators of the HOG MAPK pathway and underscores the potential of deploying OxdCs as potent targets for developing fungicides.
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Affiliation(s)
- Jingwen Lu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yu Liu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Miao Song
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yitao Xi
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Hong Yang
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China; Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Wenbo Liu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Xiao Li
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Justice Norvienyeku
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yu Zhang
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Weiguo Miao
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Chunhua Lin
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
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Amenaghawon AN, Ayere JE, Amune UO, Otuya IC, Abuga EC, Anyalewechi CL, Okoro OV, Okolie JA, Oyefolu PK, Eshiemogie SO, Osahon BE, Omede M, Eshiemogie SA, Igemhokhai S, Okedi MO, Kusuma HS, Muojama OE, Shavandi A, Darmokoesoemo H. A comprehensive review of recent advances in the applications and biosynthesis of oxalic acid from bio-derived substrates. ENVIRONMENTAL RESEARCH 2024; 251:118703. [PMID: 38518912 DOI: 10.1016/j.envres.2024.118703] [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: 11/02/2023] [Revised: 02/12/2024] [Accepted: 03/11/2024] [Indexed: 03/24/2024]
Abstract
Organic acids are important compounds with numerous applications in different industries. This work presents a comprehensive review of the biological synthesis of oxalic acid, an important organic acid with many industrial applications. Due to its important applications in pharmaceuticals, textiles, metal recovery, and chemical and metallurgical industries, the global demand for oxalic acid has increased. As a result, there is an increasing need to develop more environmentally friendly and economically attractive alternatives to chemical synthesis methods, which has led to an increased focus on microbial fermentation processes. This review discusses the specific strategies for microbial production of oxalic acid, focusing on the benefits of using bio-derived substrates to improve the economics of the process and promote a circular economy in comparison with chemical synthesis. This review provides a comprehensive analysis of the various fermentation methods, fermenting microorganisms, and the biochemistry of oxalic acid production. It also highlights key sustainability challenges and considerations related to oxalic acid biosynthesis, providing important direction for further research. By providing and critically analyzing the most recent information in the literature, this review serves as a comprehensive resource for understanding the biosynthesis of oxalic acid, addressing critical research gaps, and future advances in the field.
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Affiliation(s)
- Andrew Nosakhare Amenaghawon
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria.
| | - Joshua Efosa Ayere
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Ubani Oluwaseun Amune
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical Engineering, Faculty of Engineering, Edo State University, Uzairue, Edo State, Nigeria
| | - Ifechukwude Christopher Otuya
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical Engineering, Faculty of Engineering, Delta State University of Science and Technology, Ozoro, Delta State, Nigeria
| | - Emmanuel Christopher Abuga
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Chinedu Lewis Anyalewechi
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical Engineering, Faculty of Engineering, Federal Polytechnic Oko, Anambra State, Nigeria
| | - Oseweuba Valentine Okoro
- BioMatter Unit - École polytechnique de Bruxelles, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium
| | - Jude A Okolie
- Engineering Pathways, Gallogly College of Engineering, University of Oklahoma, Norman, OK 73019, USA
| | - Peter Kayode Oyefolu
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Steve Oshiokhai Eshiemogie
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Blessing Esohe Osahon
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Melissa Omede
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Stanley Aimhanesi Eshiemogie
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Shedrach Igemhokhai
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Petroleum Engineering, University of Benin, Benin City, Edo State, Nigeria
| | - Maxwell Ogaga Okedi
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical and Biomedical Engineering, Florida A&M University-Florida State University, Tallahassee, FL 2310-6046, USA
| | - Heri Septya Kusuma
- Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Pembangunan Nasional "Veteran" Yogyakarta, Indonesia.
| | - Obiora Ebuka Muojama
- Bioresources Valorization Laboratory, Department of Chemical Engineering, Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria; Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, AL, 35487-0203, USA
| | - Amin Shavandi
- BioMatter Unit - École polytechnique de Bruxelles, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium
| | - Handoko Darmokoesoemo
- Department of Chemistry, Faculty of Science and Technology, Airlangga University, Mulyorejo, Surabaya 60115, Indonesia.
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Grąz M. Role of oxalic acid in fungal and bacterial metabolism and its biotechnological potential. World J Microbiol Biotechnol 2024; 40:178. [PMID: 38662173 PMCID: PMC11045627 DOI: 10.1007/s11274-024-03973-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 03/29/2024] [Indexed: 04/26/2024]
Abstract
Oxalic acid and oxalates are secondary metabolites secreted to the surrounding environment by fungi, bacteria, and plants. Oxalates are linked to a variety of processes in soil, e.g. nutrient availability, weathering of minerals, or precipitation of metal oxalates. Oxalates are also mentioned among low-molecular weight compounds involved indirectly in the degradation of the lignocellulose complex by fungi, which are considered to be the most effective degraders of wood. The active regulation of the oxalic acid concentration is linked with enzymatic activities; hence, the biochemistry of microbial biosynthesis and degradation of oxalic acid has also been presented. The potential of microorganisms for oxalotrophy and the ability of microbial enzymes to degrade oxalates are important factors that can be used in the prevention of kidney stone, as a diagnostic tool for determination of oxalic acid content, as an antifungal factor against plant pathogenic fungi, or even in efforts to improve the quality of edible plants. The potential role of fungi and their interaction with bacteria in the oxalate-carbonate pathway are regarded as an effective way for the transfer of atmospheric carbon dioxide into calcium carbonate as a carbon reservoir.
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Affiliation(s)
- Marcin Grąz
- Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland.
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Wang L, Tian D, Zhang X, Han M, Cheng X, Ye X, Zhang C, Gao H, Li Z. The Regulation of Phosphorus Release by Penicillium chrysogenum in Different Phosphate via the TCA Cycle and Mycelial Morphology. J Microbiol 2023; 61:765-775. [PMID: 37665553 DOI: 10.1007/s12275-023-00072-2] [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: 06/22/2023] [Revised: 08/08/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
Phosphate-solubilizing fungi (PSF) efficiently dissolve insoluble phosphates through the production of organic acids. This study investigates the mechanisms of organic acid secretion by PSF, specifically Penicillium chrysogenum, under tricalcium phosphate (Ca3(PO4)2, Ca-P) and ferric phosphate (FePO4, Fe-P) conditions. Penicillium chrysogenum exhibited higher phosphorus (P) release efficiency from Ca-P (693.6 mg/L) than from Fe-P (162.6 mg/L). However, Fe-P significantly enhanced oxalic acid (1193.7 mg/L) and citric acid (227.7 mg/L) production by Penicillium chrysogenum compared with Ca-P (905.7 and 3.5 mg/L, respectively). The presence of Fe-P upregulated the expression of genes and activity of enzymes related to the tricarboxylic acid cycle, including pyruvate dehydrogenase and citrate synthase. Additionally, Fe-P upregulated the expression of chitinase and endoglucanase genes, inducing a transformation of Penicillium chrysogenum mycelial morphology from pellet to filamentous. The filamentous morphology exhibited higher efficiency in oxalic acid secretion and P release from Fe-P and Ca-P. Compared with pellet morphology, filamentous morphology enhanced P release capacity by > 40% and > 18% in Ca-P and Fe-P, respectively. This study explored the strategies employed by PSF to improve the dissolution of different insoluble phosphates.
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Affiliation(s)
- Liyan Wang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Da Tian
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
| | - Xiaoru Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Mingxue Han
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Xiaohui Cheng
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Xinxin Ye
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Chaochun Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Hongjian Gao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, Anhui Province Engineering and Technology Research Center of Intelligent Manufacture and Efficient Utilization of Green Phosphorus Fertilizer, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
- Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-Restoration, Ministry of Natural Resources, College of Resources and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China.
- Jiangsu Provincial Key Lab for Organic SolidWaste Utilization, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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Duran K, Magnin J, America AH, Peng M, Hilgers R, de Vries RP, Baars JJ, van Berkel WJ, Kuyper TW, Kabel MA. The secretome of Agaricus bisporus: Temporal dynamics of plant polysaccharides and lignin degradation. iScience 2023; 26:107087. [PMID: 37426348 PMCID: PMC10329178 DOI: 10.1016/j.isci.2023.107087] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/01/2023] [Accepted: 06/06/2023] [Indexed: 07/11/2023] Open
Abstract
Despite substantial lignocellulose conversion during mycelial growth, previous transcriptome and proteome studies have not yet revealed how secretomes from the edible mushroom Agaricus bisporus develop and whether they modify lignin models in vitro. To clarify these aspects, A. bisporus secretomes collected throughout a 15-day industrial substrate production and from axenic lab-cultures were subjected to proteomics, and tested on polysaccharides and lignin models. Secretomes (day 6-15) comprised A. bisporus endo-acting and substituent-removing glycoside hydrolases, whereas β-xylosidase and glucosidase activities gradually decreased. Laccases appeared from day 6 onwards. From day 10 onwards, many oxidoreductases were found, with numerous multicopper oxidases (MCO), aryl alcohol oxidases (AAO), glyoxal oxidases (GLOX), a manganese peroxidase (MnP), and unspecific peroxygenases (UPO). Secretomes modified dimeric lignin models, thereby catalyzing syringylglycerol-β-guaiacyl ether (SBG) cleavage, guaiacylglycerol-β-guaiacyl ether (GBG) polymerization, and non-phenolic veratrylglycerol-β-guaiacyl ether (VBG) oxidation. We explored A. bisporus secretomes and insights obtained can help to better understand biomass valorization.
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Affiliation(s)
- Katharina Duran
- Laboratory of Food Chemistry, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Joris Magnin
- Laboratory of Food Chemistry, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Antoine H.P. America
- Bioscience, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands
| | - Mao Peng
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Roelant Hilgers
- Laboratory of Food Chemistry, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Ronald P. de Vries
- Fungal Physiology, Westerdijk Fungal Biodiversity Institute & Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Johan J.P. Baars
- CNC Grondstoffen, Driekronenstraat 6, 6596 MA Milsbeek, the Netherlands
| | - Willem J.H. van Berkel
- Laboratory of Food Chemistry, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Thomas W. Kuyper
- Soil Biology Group, Wageningen University & Research, Droevendaalsesteeg 3a, 6708 PB Wageningen, the Netherlands
| | - Mirjam A. Kabel
- Laboratory of Food Chemistry, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
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Hossain MM, Sultana F, Li W, Tran LSP, Mostofa MG. Sclerotinia sclerotiorum (Lib.) de Bary: Insights into the Pathogenomic Features of a Global Pathogen. Cells 2023; 12:cells12071063. [PMID: 37048136 PMCID: PMC10093061 DOI: 10.3390/cells12071063] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/11/2023] [Accepted: 03/23/2023] [Indexed: 04/03/2023] Open
Abstract
Sclerotinia sclerotiorum (Lib.) de Bary is a broad host-range fungus that infects an inclusive array of plant species and afflicts significant yield losses globally. Despite being a notorious pathogen, it has an uncomplicated life cycle consisting of either basal infection from myceliogenically germinated sclerotia or aerial infection from ascospores of carpogenically germinated sclerotia. This fungus is unique among necrotrophic pathogens in that it inevitably colonizes aging tissues to initiate an infection, where a saprophytic stage follows the pathogenic phase. The release of cell wall-degrading enzymes, oxalic acid, and effector proteins are considered critical virulence factors necessary for the effective pathogenesis of S. sclerotiorum. Nevertheless, the molecular basis of S. sclerotiorum pathogenesis is still imprecise and remains a topic of continuing research. Previous comprehensive sequencing of the S. sclerotiorum genome has revealed new insights into its genome organization and provided a deeper comprehension of the sophisticated processes involved in its growth, development, and virulence. This review focuses on the genetic and genomic aspects of fungal biology and molecular pathogenicity to summarize current knowledge of the processes utilized by S. sclerotiorum to parasitize its hosts. Understanding the molecular mechanisms regulating the infection process of S. sclerotiorum will contribute to devising strategies for preventing infections caused by this destructive pathogen.
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Mali T, Laine K, Hamberg L, Lundell T. Metabolic activities and ultrastructure imaging at late-stage of wood decomposition in interactive brown rot - white rot fungal combinations. FUNGAL ECOL 2023. [DOI: 10.1016/j.funeco.2022.101199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Grąz M, Ruminowicz-Stefaniuk M, Jarosz-Wilkołazka A. Oxalic acid degradation in wood-rotting fungi. Searching for a new source of oxalate oxidase. World J Microbiol Biotechnol 2023; 39:13. [PMID: 36380124 PMCID: PMC9666339 DOI: 10.1007/s11274-022-03449-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022]
Abstract
Oxalate oxidase (EC 1.2.3.4) is an oxalate-decomposing enzyme predominantly found in plants but also described in basidiomycete fungi. In this study, we investigated 23 fungi to determine their capability of oxalic acid degradation. After analyzing their secretomes for the products of the oxalic acid-degrading enzyme activity, three groups were distinguished among the fungi studied. The first group comprised nine fungi classified as oxalate oxidase producers, as their secretome pattern revealed an increase in the hydrogen peroxide concentration, no formic acid, and a reduction in the oxalic acid content. The second group of fungi comprised eight fungi described as oxalate decarboxylase producers characterized by an increase in the formic acid level associated with a decrease in the oxalate content in their secretomes. In the secretomes of the third group of six fungi, no increase in formic acid or hydrogen peroxide contents was observed but a decline in the oxalate level was found. The intracellular activity of OXO in the mycelia of Schizophyllum commune, Trametes hirsuta, Gloeophyllum trabeum, Abortiporus biennis, Cerrena unicolor, Ceriosporopsis mediosetigera, Trametes sanguinea, Ceriporiopsis subvermispora, and Laetiporus sulphureus was confirmed by a spectrophotometric assay.
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Affiliation(s)
- Marcin Grąz
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Marta Ruminowicz-Stefaniuk
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Anna Jarosz-Wilkołazka
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
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Cloning and Molecular Characterization of CmOxdc3 Coding for Oxalate Decarboxylase in the Mycoparasite Coniothyrium minitans. J Fungi (Basel) 2022; 8:jof8121304. [PMID: 36547637 PMCID: PMC9785797 DOI: 10.3390/jof8121304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Coniothyrium minitans (Cm) is a mycoparasitic fungus of Sclerotinia sclerotiorum (Ss), the causal agent of Sclerotinia stem rot of oilseed rape. Ss can produce oxalic acid (OA) as a phytotoxin, whereas Cm can degrade OA, thereby nullifying the toxic effect of OA. Two oxalate decarboxylase (OxDC)-coding genes, CmOxdc1 and CmOxdc2, were cloned, and only CmOxdc1 was found to be partially responsible for OA degradation, implying that other OA-degrading genes may exist in Cm. This study cloned a novel OxDC gene (CmOxdc3) in Cm and its OA-degrading function was characterized by disruption and complementation of CmOxdc3. Sequence analysis indicated that, unlike CmOxdc1, CmOxdc3 does not have the signal peptide sequence, implying that CmOxDC3 may have no secretory capability. Quantitative RT-PCR showed that CmOxdc3 was up-regulated in the presence of OA, malonic acid and hydrochloric acid. Deletion of CmOxdc3 resulted in reduced capability to parasitize sclerotia of Ss. The polypeptide (CmOxDC3) encoded by CmOxdc3 was localized in cytoplasm and gathered in vacuoles in response to the extracellular OA. Taken together, our results demonstrated that CmOxdc3 is a novel gene responsible for OA degradation, which may work in a synergistic manner with CmOxdc1.
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Wang K, Wen Z, Asiegbu FO. The dark septate endophyte Phialocephala sphaeroides suppresses conifer pathogen transcripts and promotes root growth of Norway spruce. TREE PHYSIOLOGY 2022; 42:2627-2639. [PMID: 35878416 PMCID: PMC9743008 DOI: 10.1093/treephys/tpac089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Plant-associated microbes including dark septate endophytes (DSEs) of forest trees play diverse functional roles in host fitness including growth promotion and increased defence. However, little is known about the impact on the fungal transcriptome and metabolites during tripartite interaction involving plant host, endophyte and pathogen. To understand the transcriptional regulation of endophyte and pathogen during co-infection, Norway spruce (Picea abies) seedlings were infected with DSE Phialocephala sphaeroides, or conifer root-rot pathogen Heterobasidion parviporum, or both. Phialocephala sphaeroides showed low but stable transcripts abundance (a decrease of 40%) during interaction with Norway spruce and conifer pathogen. By contrast, H. parviporum transcripts were significantly reduced (92%) during co-infection. With RNA sequencing analysis, P. sphaeroides experienced a shift from cell growth to anti-stress and antagonistic responses, while it repressed the ability of H. parviporum to access carbohydrate nutrients by suppressing its carbohydrate/polysaccharide-degrading enzyme machinery. The pathogen on the other hand secreted cysteine peptidase to restrict free growth of P. sphaeroides. The expression of both DSE P. sphaeroides and pathogen H. parviporum genes encoding plant growth promotion products were equally detected in both dual and tripartite interaction systems. This was further supported by the presence of tryptophan-dependent indolic compound in liquid culture of P. sphaeroides. Norway spruce and Arabidopsis seedlings treated with P. sphaeroides culture filtrate exhibited auxin-like phenotypes, such as enhanced root hairs, and primary root elongation at low concentration but shortened primary root at high concentration. The results suggested that the presence of the endophyte had strong repressive or suppressive effect on H. parviporum transcripts encoding genes involved in nutrient acquisition.
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Affiliation(s)
- Kai Wang
- Corresponding authors: K.Wang (; ) and F.Asiegbu ()
| | - Zilan Wen
- Department of Forest Sciences, University of Helsinki, PO Box 27, Helsinki FIN-00014, Finland
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12
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Osório da Rosa L, Poleto L, Rodrigues LF, Fontana RC, Moser LI, Lanzer RM, Campos CS, Camassola M. Mycotechnology to remove of metals from tannery and galvanic effluents - Fungal species from the Amazon and Atlantic Forest show high efficiency. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115677. [PMID: 35816960 DOI: 10.1016/j.jenvman.2022.115677] [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: 03/08/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Metals are considered one of the biggest environmental problems, due to their toxicity and the complexity of removal. This study evaluated the bioaccumulation capacity of water contaminating metals by fungal isolates of Lentinus and Panus species, to elucidate the bioremediation processes of metal contaminated effluents. Initially, tests were performed with fungal isolates using a mixture of metals, aluminum, iron, copper, lead, chromium, nickel and zinc. Lentinus crinitus 154L.21 was the most promising fungus for the removal of metals in the mixture. Based on these data, the potential application of this fungus for the treatment of galvanic and tannery effluents was evaluated. For galvanic effluent, no detectable copper, chromium, and nickel was removed; however, for tannery effluents, reductions in aluminum concentrations from 204.1 to 3.7 mg L-1 (≅98% removal), chromium from 1199.6 to 20.4 mg L-1 (≅98% removal) and iron from 22.6 mg L-1 (100% removal) to an amount lower than the detection limit were observed. These data indicated that L. crinitus 154L.21 removes metals from industrial effluents, being an important route for bioremediation processes.
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Affiliation(s)
- Letícia Osório da Rosa
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Liliane Poleto
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Luiz Frederico Rodrigues
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681 - Building 96J, 90619-900 Porto Alegre, RS, Brazil
| | - Roselei Claudete Fontana
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Leticia Isabela Moser
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681 - Building 96J, 90619-900 Porto Alegre, RS, Brazil
| | - Rosane Maria Lanzer
- Laboratory of Toxicology and Limnology, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Ceci Sales Campos
- Laboratory of Cultivation of Edible Fungi, National Institute for Research in the Amazon (INPA), Av. André Araújo, 2936, Caixa Postal: 478, 69011-970, Manaus, AM, Brazil
| | - Marli Camassola
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil.
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Santos-Carballal D, de Leeuw NH. Catalytic formation of oxalic acid on the partially oxidised greigite Fe 3S 4(001) surface. Phys Chem Chem Phys 2022; 24:20104-20124. [PMID: 35983830 DOI: 10.1039/d2cp00333c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Greigite (Fe3S4), with its ferredoxin-like 4Fe-4S redox centres, is a naturally occurring mineral capable of acting as a catalyst in the conversion of carbon dioxide (CO2) into low molecular-weight organic acids (LMWOAs), which are of paramount significance in several soil and plant processes as well as in the chemical industry. In this paper, we report the reaction between CO2 and water (H2O) to form oxalic acid (H2C2O4) on the partially oxidised greigite Fe3S4(001) surface by means of spin-polarised density functional theory calculations with on-site Coulomb corrections and long-range dispersion interactions (DFT+U-D2). We have calculated the bulk phase of Fe3S4 and the two reconstructed Tasker type 3 terminations of its (001) surface, whose properties are in good agreement with available experimental data. We have obtained the relevant phase diagram, showing that the Fe3S4(001) surface becomes 62.5% partially oxidised, by replacing S by O atoms, in the presence of water at the typical conditions of calcination [Mitchell et al. Faraday Discuss. 2021, 230, 30-51]. The adsorption and co-adsorption of the reactants on the partially oxidised Fe3S4(001) surface are exothermic processes. We have considered three mechanistic pathways to explain the formation of H2C2O4, showing that the coupling of the C-C bond and second protonation are the elementary steps with the largest energy penalty. Our calculations suggest that the partially oxidised Fe3S4(001) surface is a mineral phase that can catalyse the formation of H2C2O4 under favourable conditions, which has important implications for natural ecosystems and is a process that can be harnessed for the industrial manufacture of this organic acid.
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Affiliation(s)
| | - Nora H de Leeuw
- School of Chemistry, University of Leeds, Leeds LS2 9JT, UK. .,Department of Earth Sciences, Utrecht University, Princetonplein 8A, 3584 CD Utrecht, The Netherlands.
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Comparative Copper Resistance Strategies of Rhodonia placenta and Phanerochaete chrysosporium in a Copper/Azole-Treated Wood Microcosm. J Fungi (Basel) 2022; 8:jof8070706. [PMID: 35887462 PMCID: PMC9320278 DOI: 10.3390/jof8070706] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 12/25/2022] Open
Abstract
Copper-based formulations of wood preservatives are widely used in industry to protect wood materials from degradation caused by fungi. Wood treated with preservatives generate toxic waste that currently cannot be properly recycled. Despite copper being very efficient as an antifungal agent against most fungi, some species are able to cope with these high metal concentrations. This is the case for the brown-rot fungus Rhodonia placenta and the white-rot fungus Phanerochaete chrysosporium, which are able to grow efficiently in pine wood treated with Tanalith E3474. Here, we aimed to test the abilities of the two fungi to cope with copper in this toxic environment and to decontaminate Tanalith E-treated wood. A microcosm allowing the growth of the fungi on industrially treated pine wood was designed, and the distribution of copper between mycelium and wood was analysed within the embedded hyphae and wood particles using coupled X-ray fluorescence spectroscopy and Scanning Electron Microscopy (SEM)/Electron Dispersive Spectroscopy (EDS). The results demonstrate the copper biosorption capacities of P. chrysosporium and the production of copper-oxalate crystals by R. placenta. These data coupled to genomic analysis suggest the involvement of additional mechanisms for copper tolerance in these rot fungi that are likely related to copper transport (import, export, or vacuolar sequestration).
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Xiong BJ, Stanley CE, Dusny C, Schlosser D, Harms H, Wick LY. pH Distribution along Growing Fungal Hyphae at Microscale. J Fungi (Basel) 2022; 8:599. [PMID: 35736082 PMCID: PMC9224906 DOI: 10.3390/jof8060599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 02/06/2023] Open
Abstract
Creating unique microenvironments, hyphal surfaces and their surroundings allow for spatially distinct microbial interactions and functions at the microscale. Using a microfluidic system and pH-sensitive whole-cell bioreporters (Synechocystis sp. PCC6803) attached to hyphae, we spatially resolved the pH along surfaces of growing hyphae of the basidiomycete Coprinopsis cinerea. Time-lapse microscopy analysis of ratiometric fluorescence signals of >2400 individual bioreporters revealed an overall pH drop from 6.3 ± 0.4 (n = 2441) to 5.0 ± 0.3 (n = 2497) within 7 h after pH bioreporter loading to hyphal surfaces. The pH along hyphal surfaces varied significantly (p < 0.05), with pH at hyphal tips being on average ~0.8 pH units lower than at more mature hyphal parts near the entrance of the microfluidic observation chamber. Our data represent the first dynamic in vitro analysis of surface pH along growing hyphae at the micrometre scale. Such knowledge may improve our understanding of spatial, pH-dependent hyphal processes, such as the degradation of organic matter or mineral weathering.
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Affiliation(s)
- Bi-Jing Xiong
- Helmholtz Centre for Environmental Research-UFZ, Department of Environmental Microbiology, Permoserstraβe 15, 04318 Leipzig, Germany; (B.-J.X.); (D.S.); (H.H.)
| | - Claire E. Stanley
- Department of Bioengineering, Imperial College of London, South Kensington Campus, London SW7 2AZ, UK;
| | - Christian Dusny
- Helmholtz Centre for Environmental Research-UFZ, Department of Solar Materials, Permoserstraβe 15, 04318 Leipzig, Germany;
| | - Dietmar Schlosser
- Helmholtz Centre for Environmental Research-UFZ, Department of Environmental Microbiology, Permoserstraβe 15, 04318 Leipzig, Germany; (B.-J.X.); (D.S.); (H.H.)
| | - Hauke Harms
- Helmholtz Centre for Environmental Research-UFZ, Department of Environmental Microbiology, Permoserstraβe 15, 04318 Leipzig, Germany; (B.-J.X.); (D.S.); (H.H.)
| | - Lukas Y. Wick
- Helmholtz Centre for Environmental Research-UFZ, Department of Environmental Microbiology, Permoserstraβe 15, 04318 Leipzig, Germany; (B.-J.X.); (D.S.); (H.H.)
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Wu X, Lyu Y, Ren H, Zhou F, Zhang X, Zhao X, Zhang G, Yang H. Degradation of oxalic acid by Trichoderma afroharzianum and its correlation with cell wall degrading enzymes in antagonising Botrytis cinerea. J Appl Microbiol 2022; 133:2680-2693. [PMID: 35543356 DOI: 10.1111/jam.15617] [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: 03/25/2022] [Revised: 04/30/2022] [Accepted: 05/07/2022] [Indexed: 11/27/2022]
Abstract
AIM Oxalic acid (OA) is one of the pathogenic factors of Botrytis cinerea. Trichoderma afroharzianum exerts both antagonistic and oxalate-degrading effects on B. cinerea. This study aimed to investigate the relationship between the elimination of OA by T. afroharzianum and its antagonistic effects on B. cinerea. METHODS AND RESULTS Reversed-phase high performance liquid chromatogram (RP-HPLC) analysis showed that T. afroharzianum LTR-2 eliminated 10- or 20-mmol/L OA within 120 h, with the degradation being particularly efficient at the concentration of 20 mmol/L. RNA-seq analysis showed that the oxalate decarboxylase (OXDC) gene Toxdc, β-1,3-exoglucanase gene Tglu, and aspartic protease gene Tpro of LTR-2 were significantly upregulated after treatment with 20-mmol/L OA. RT-qPCR analysis showed that under the conditions of confrontation, Toxdc and three cell wall degrading enzyme (CWDE) genes were upregulated before physical contact with B. cinerea. In addition, RT-qPCR analysis showed that OA synthesis in B. cinerea was not significantly affected by LTR-2. CONCLUSIONS The results revealed a correlation between OA degradation and mycoparasitism in T. afroharzianum when antagonizing B. cinerea at transcriptional level. SIGNIFICANCE AND IMPACT OF THE STUDY The relationship between OA degradation by T. afroharzianum and its effects against B. cinerea provide a new perspective on the antagonism of T. afroharzianum against B. cinerea. In addition, this study provides theoretical data for the scientific application of T. afroharzianum in the field of biocontrol.
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Affiliation(s)
- Xiaoqing Wu
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
| | - Yuping Lyu
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai 201602, China
| | - He Ren
- Shandong New Times Pharmaceutical Co., Ltd., Linyi 273400, China
| | - Fangyuan Zhou
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
| | - Xinjian Zhang
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
| | - Xiaoyan Zhao
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
| | - Guangzhi Zhang
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
| | - Hetong Yang
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250103, China
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Li J, Duan Y, Hu Z, Yang F, Wu X, Zhang R. Physiological mechanisms by which gypsum increases the growth and yield of Lentinula edodes. Appl Microbiol Biotechnol 2022; 106:2677-2688. [PMID: 35338385 DOI: 10.1007/s00253-022-11884-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/05/2022] [Accepted: 03/12/2022] [Indexed: 11/02/2022]
Abstract
Lentinula edodes is one of the most important commercially cultivated edible mushrooms. It is well known that gypsum (CaSO4·2H2O) supplementation in sawdust medium increases the yield of L. edodes, while the physiological mechanisms remain unclear. Our previous study showed that the acidification of the medium to pH 3.5-4.0 was essential for the growth of L. edodes. In this study, it was found that the oxalic acid excreted by L. edodes was responsible for the acidification of the medium. The biosynthesis of oxalic acid was regulated by the ambient pH and buffer capacity of the medium. To acidify the sawdust medium, the concentrations of total and soluble oxalate were 51.1 mmol/kg and 10.8 mmol/kg, respectively. However, when the concentration of soluble oxalate was 8.0 mmol/kg, the mycelial growth rate decreased by 29% compared with the control. Soluble oxalate was toxic to L. edodes, while soluble sulfate was nontoxic. CaSO4 reacted with soluble oxalate to form nontoxic insoluble CaC2O4 and the strong acid H2SO4. When the CaSO4 supplemented in sawdust medium was more than 25 mmol/kg, the soluble oxalate decreased to less than 1 mmol/kg, and the mycelial growth rate increased by 32% compared with the control. In conclusion, gypsum improved the growth and yield by relieving the toxicity of oxalate and facilitating the acidification of sawdust medium. KEY POINTS: • L. edodes excretes oxalic acid to acidify the ambient environment for growth. • Soluble oxalate is toxic to L. edodes. • Gypsum increases growth by reacting with oxalate to relieve its toxicity.
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Affiliation(s)
- Jintao Li
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Yingce Duan
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Ziyi Hu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Fan Yang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Xiangli Wu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Ruiying Zhang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China.
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Goldsmith M, Barad S, Peleg Y, Albeck S, Dym O, Brandis A, Mehlman T, Reich Z. The identification and characterization of an oxalyl-CoA synthetase from grass pea (Lathyrus sativus L.). RSC Chem Biol 2022; 3:320-333. [PMID: 35359497 PMCID: PMC8905533 DOI: 10.1039/d1cb00202c] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 02/04/2022] [Indexed: 11/21/2022] Open
Abstract
Oxalic acid is a small metabolite that can be found in many plants in which it serves as protection from herbivores, a chelator of metal ions, a regulator of calcium...
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Affiliation(s)
- Moshe Goldsmith
- Dept. of Biomolecular Sciences, Weizmann Institute of Science Rehovot 7610001 Israel +972-8-9344118 +972-8-9343278 +972-8-9342982
| | - Shiri Barad
- Dept. of Biomolecular Sciences, Weizmann Institute of Science Rehovot 7610001 Israel +972-8-9344118 +972-8-9343278 +972-8-9342982
| | - Yoav Peleg
- Dept. of Life Science Core Facilities, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Shira Albeck
- Dept. of Life Science Core Facilities, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Orly Dym
- Dept. of Life Science Core Facilities, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Alexander Brandis
- Dept. of Life Science Core Facilities, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Tevie Mehlman
- Dept. of Life Science Core Facilities, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Ziv Reich
- Dept. of Biomolecular Sciences, Weizmann Institute of Science Rehovot 7610001 Israel +972-8-9344118 +972-8-9343278 +972-8-9342982
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Iron homeostasis in the absence of ferricrocin and its consequences in fungal development and insect virulence in Beauveria bassiana. Sci Rep 2021; 11:19624. [PMID: 34608174 PMCID: PMC8490459 DOI: 10.1038/s41598-021-99030-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/14/2021] [Indexed: 11/28/2022] Open
Abstract
The putative ferricrocin synthetase gene ferS in the fungal entomopathogen Beauveria bassiana BCC 2660 was identified and characterized. The 14,445-bp ferS encodes a multimodular nonribosomal siderophore synthetase tightly clustered with Fusarium graminearum ferricrocin synthetase. Functional analysis of this gene was performed by disruption with the bar cassette. ΔferS mutants were verified by Southern and PCR analyses. HPLC and TLC analyses of crude extracts indicated that biosynthesis of ferricrocin was abolished in ΔferS. Insect bioassays surprisingly indicated that ΔferS killed the Spodoptera exigua larvae faster (LT50 59 h) than wild type (66 h). Growth and developmental assays of the mutant and wild type demonstrated that ΔferS had a significant increase in germination under iron depletion and radial growth and a decrease in conidiation. Mitotracker staining showed that the mitochondrial activity was enriched in ΔferS under both iron excess and iron depletion. Comparative transcriptomes between wild type and ΔferS indicated that the mutant was increased in the expression of eight cytochrome P450 genes and those in iron homeostasis, ferroptosis, oxidative stress response, ergosterol biosynthesis, and TCA cycle, compared to wild type. Our data suggested that ΔferS sensed the iron excess and the oxidative stress and, in turn, was up-regulated in the antioxidant-related genes and those in ergosterol biosynthesis and TCA cycle. These increased biological pathways help ΔferS grow and germinate faster than the wild type and caused higher insect mortality than the wild type in the early phase of infection.
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Experimental and modeling studies of competitive Pb (II) and Cd (II) bioaccumulation by Aspergillus niger. Appl Microbiol Biotechnol 2021; 105:6477-6488. [PMID: 34424384 DOI: 10.1007/s00253-021-11497-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/01/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
Co-existence of toxic metals causes complex toxicity to microorganisms during bioremediation in water and soil. This study investigated the immobilization of Pb2+ and Cd2+ by fungus Aspergillus niger, which has been widely applied to environmental remediation. Five treatments were set, i.e., CK (no toxic metals), Pb2+ only, Cd2+ only, Pb2+/Cd2+ = 1:1(molar ratio), and Pb2+/Cd2+ = 2:1. Cadmium induced strong toxicity to the fungus, and maintained the high toxicity during incubation. However, as Pb/Cd ratio increased from 0 to 2, the removal rates of Cd2+ by A. niger were raised from 30 to 50%. The elevated activities of pyruvate dehydrogenase (PDH) and citrate synthetase (CS) enzymes confirmed that Pb addition could stimulate the growth of A. niger. For instance, citric acid concentrations and CS activities were 463.22 mg/L and 78.37 nmol/min/g, respectively, during 3-day incubation as Pb/Cd = 1. However, these two values were as low as ~ 50 with addition of only Cd. It was hence assumed that appropriate co-existence of Pb2+ enhanced microbial activity by promoting TCA cycle of the fungus. Moreover, the SEM analysis and geochemical modeling demonstrated that Pb2+ cations were more easily adsorbed and mineralized on A. niger with respect to Cd2+. Therefore, instead of intensifying metal toxicity, the addition of appropriate Pb actually weakened Cd toxicity to the fungus. This study sheds a bright future on application of A. niger to the remediation of polluted water with co-existence of Pb and Cd. KEY POINTS: • Cd2+ significantly inhibited P consumption, suggesting its high toxicity to A. niger. • Pb2+ stimulated the growth of A. niger by promoting TCA cycle in the cells. • Cd2+ removal by A. niger were improved with co-existence of Pb2+.
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Tian D, Wang L, Hu J, Zhang L, Zhou N, Xia J, Xu M, Yusef KK, Wang S, Li Z, Gao H. A study of P release from Fe-P and Ca-P via the organic acids secreted by Aspergillus niger. J Microbiol 2021; 59:819-826. [PMID: 34382148 DOI: 10.1007/s12275-021-1178-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 11/28/2022]
Abstract
Phosphate solubilizing fungi (PSF) have been widely applied to dissolve insoluble phosphates (IPs). However, the PSF usually demonstrates a different phosphate solubilizing capacity for various IPs. This study explored the mechanisms of Aspergillus niger for the dissolution of ferric phosphate (FePO4, Fe-P), and tricalcium phosphate (Ca3[PO4]2, Ca-P) regarding the tricarboxylic acid (TCA) cycle. Aspergillus niger has higher phosphorus (P) content released from Ca-P, reached the maximum value of 861 mg/L after seven days of incubation, compared with the 169 mg/L from Fe-P. Oxalic acid promoted the release of P from Ca-P through the formation of calcium oxalate. The presence of Fe-P can stimulate A. niger to secrete large amounts of citric acid, confirmed by the enhancement of citrate synthase (CS) activity. However, citric acid only promotes 0.5% of P released from Fe-P. Meanwhile, although oxalic acid still dominates the release of P from Fe-P, its abundance was significantly declined. In contrast, oxalic acid also shows a higher P release ratio in Ca-P than citric acid, i.e., 36% vs. 22%. This study points to the future usage of A. niger to dissolve IPs in soil required to enhance oxalic acid secretion.
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Affiliation(s)
- Da Tian
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China. .,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China.
| | - Liyan Wang
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Jun Hu
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Liangliang Zhang
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Ningning Zhou
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Jingjing Xia
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Meiyue Xu
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Kianpoor Kalkhajeh Yusef
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China.,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China
| | - Shimei Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China.,Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China.,Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing, 210095, P. R. China
| | - Hongjian Gao
- Anhui Province Key Laboratory of Farmland Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, P. R. China. .,Research Centre of Phosphorus Efficient Utilization and Water Environment Protection along the Yangtze River Economic Belt, Anhui Agricultural University, Hefei, 230036, P. R. China.
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Sheng X, Himo F. Mechanisms of metal-dependent non-redox decarboxylases from quantum chemical calculations. Comput Struct Biotechnol J 2021; 19:3176-3186. [PMID: 34141138 PMCID: PMC8187880 DOI: 10.1016/j.csbj.2021.05.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 11/18/2022] Open
Abstract
Quantum chemical calculations are today an extremely valuable tool for studying enzymatic reaction mechanisms. In this mini-review, we summarize our recent work on several metal-dependent decarboxylases, where we used the so-called cluster approach to decipher the details of the reaction mechanisms, including elucidation of the identity of the metal cofactors and the origins of substrate specificity. Decarboxylases are of growing potential for biocatalytic applications, as they can be used in the synthesis of novel compounds of, e.g., pharmaceutical interest. They can also be employed in the reverse direction, providing a strategy to synthesize value‐added chemicals by CO2 fixation. A number of non-redox metal-dependent decarboxylases from the amidohydrolase superfamily have been demonstrated to have promiscuous carboxylation activities and have attracted great attention in the recent years. The computational mechanistic studies provide insights that are important for the further modification and utilization of these enzymes in industrial processes. The discussed enzymes are: 5‐carboxyvanillate decarboxylase, γ‐resorcylate decarboxylase, 2,3‐dihydroxybenzoic acid decarboxylase, and iso-orotate decarboxylase.
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Key Words
- 2,3-DHBD, 2,3‐dihydroxybenzoic acid decarboxylase
- 2,6-DHBD, 2,6‐dihydroxybenzoic acid decarboxylase
- 2-NR, 2-nitroresorcinol
- 5-CV, 5-carboxyvanillate
- 5-NV, 5-nitrovanillate
- 5caU, 5-carboxyuracil
- AHS, amidohydrolase superfamily
- Biocatalysis
- Decarboxylase
- Density functional theory
- IDCase, iso-orotate decarboxylase
- LigW, 5‐carboxyvanillate decarboxylase
- MIMS, membrane inlet mass spectrometry
- QM/MM, quantum mechanics/molecular mechanics
- Reaction mechanism
- Transition state
- γ-RS, γ-resorcylate
- γ-RSD, γ‐resorcylate decarboxylase
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Affiliation(s)
- Xiang Sheng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, Tianjin 300308, PR China
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
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23
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Grąz M, Jarosz-Wilkołazka A, Pawlikowska-Pawlęga B, Janusz G, Kapral-Piotrowska J, Ruminowicz-Stefaniuk M, Skrzypek T, Zięba E. Oxalate oxidase from Abortiporus biennis - protein localisation and gene sequence analysis. Int J Biol Macromol 2020; 148:1307-1315. [PMID: 31739051 DOI: 10.1016/j.ijbiomac.2019.10.106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 10/11/2019] [Accepted: 10/11/2019] [Indexed: 11/25/2022]
Abstract
We have described for the first time the localisation of oxalate oxidase (OXO, EC 1.2.3.4) in Abortiporus biennis cells, using histochemical and immunochemical methods coupled with transmission electron microscopy. Rabbit anti-oxalate oxidase immunoglobulins with anti-rabbit secondary antibody conjugated with 10-nm gold particles were used. Moreover, the formation of electron dense precipitation of reaction of diaminobenzidine (DAB) with horseradish peroxidase (HRP) for histochemical localisation of the enzyme was found. OXO was localised close to the membranous structures of the cell membranes, in membranous vesicles located close to the outer cell membrane, and vacuolar membranes surrounding vacuoles. The positive immunoreaction to OXO was also intense in cell wall areas. Moreover, we proved that gene coding for OXO was expressed in the same cultures. Corresponding mRNA was isolated, full length cDNA was synthesized, cloned and sequenced. Two copies of cupin domains were found in the sequence of amino-acids conserved domain coding for the cupin enzyme. Comparison of the genomic DNA and cDNA sequences has revealed the presence of seventeen introns in the gene. The isoelectric point of the protein was estimated at pH 4.5 and several possible N-glycosylation sites were predicted.
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Affiliation(s)
- Marcin Grąz
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland.
| | - Anna Jarosz-Wilkołazka
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Bożena Pawlikowska-Pawlęga
- Department of Comparative Anatomy and Anthropology, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland; Electron Microscopy Laboratory, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Grzegorz Janusz
- Department of Biochemistry, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Justyna Kapral-Piotrowska
- Department of Comparative Anatomy and Anthropology, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland; Electron Microscopy Laboratory, Maria Curie-Skłodowska University, Akademicka 19, Lublin 20-033, Poland
| | | | - Tomasz Skrzypek
- Center for Interdisciplinary Research, Confocal and Electron Microscopy Laboratory, The John Paul II Catholic University of Lublin, Konstantynów 1J, Lublin, Poland
| | - Emil Zięba
- Center for Interdisciplinary Research, Confocal and Electron Microscopy Laboratory, The John Paul II Catholic University of Lublin, Konstantynów 1J, Lublin, Poland
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Wang JB, Zhang RJ, Mao ZG, Xue DS, Zhu ZJ, Yu HC, Cai FJ, Cai LY, Bao JW, Xu J. Full recycling of citric acid wastewater through anaerobic digestion, air-stripping and pH control. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:1196-1204. [PMID: 31799963 DOI: 10.2166/wst.2019.364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Anaerobic digestion effluent (ADE) from the anaerobic digestion treatment of citric acid wastewater can be reused as a potential substitute for process water in the citric acid fermentation. However, excessive sodium contained in ADE significantly decreases citric acid production. In this paper, the inhibition mechanism of sodium on citric acid fermentation was investigated. We demonstrated that excessive sodium did not increase oxidative stress for Aspergillus niger, but reduced the pH of the medium significantly over the period 4-24 h, which led to lower activities of glucoamylase and isomaltase secreted by A. niger, with a decrease of available sugar concentration and citric acid production. ADE was pretreated by air-stripping prior to recycle and 18 g/L calcium carbonate was added at the start of fermentation to control the pH of the medium. The inhibition caused by ADE was completely alleviated and citric acid production substantially increased from 118.6 g/L to 141.4 g/L, comparable to the fermentation with deionized water (141.2 g/L). This novel process could decrease wastewater discharges and fresh water consumption in the citric acid industry, with benefit to the environment.
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Affiliation(s)
- Jiang-Bo Wang
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Rui-Jing Zhang
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Zhong-Gui Mao
- Key Laboratory of Industrial Biotechnology (Ministry of Education), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Dong-Sheng Xue
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Zheng-Jun Zhu
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Han-Chao Yu
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Feng-Jiao Cai
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Lin-Yang Cai
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail:
| | - Jia-Wei Bao
- Key Laboratory of Industrial Biotechnology (Ministry of Education), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jian Xu
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China E-mail: ; Key Laboratory of Industrial Biotechnology (Ministry of Education), School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
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Palmieri F, Estoppey A, House GL, Lohberger A, Bindschedler S, Chain PSG, Junier P. Oxalic acid, a molecule at the crossroads of bacterial-fungal interactions. ADVANCES IN APPLIED MICROBIOLOGY 2018; 106:49-77. [PMID: 30798804 DOI: 10.1016/bs.aambs.2018.10.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxalic acid is the most ubiquitous and common low molecular weight organic acid produced by living organisms. Oxalic acid is produced by fungi, bacteria, plants, and animals. The aim of this review is to give an overview of current knowledge about the microbial cycling of oxalic acid through ecosystems. Here we review the production and degradation of oxalic acid, as well as its implications in the metabolism for fungi, bacteria, plants, and animals. Indeed, fungi are well known producers of oxalic acid, while bacteria are considered oxalic acid consumers. However, this framework may need to be modified, because the ability of fungi to degrade oxalic acid and the ability of bacteria to produce it, have been poorly investigated. Finally, we will highlight the role of fungi and bacteria in oxalic acid cycling in soil, plant and animal ecosystems.
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Affiliation(s)
- Fabio Palmieri
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Aislinn Estoppey
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Geoffrey L House
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM, United States
| | - Andrea Lohberger
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Saskia Bindschedler
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Patrick S G Chain
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM, United States
| | - Pilar Junier
- Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland.
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Paul E, Albert A, Ponnusamy S, Mishra SR, Vignesh AG, Sivakumar SM, Sivasamy G, Sadasivam SG. Designer probiotic Lactobacillus plantarum expressing oxalate decarboxylase developed using group II intron degrades intestinal oxalate in hyperoxaluric rats. Microbiol Res 2018; 215:65-75. [DOI: 10.1016/j.micres.2018.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 03/28/2018] [Accepted: 06/17/2018] [Indexed: 12/22/2022]
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27
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Song W, Wang X, Chen Z, Sheng G, Hayat T, Wang X, Sun Y. Enhanced immobilization of U(VI) on Mucor circinelloides in presence of As(V): Batch and XAFS investigation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 237:228-236. [PMID: 29486456 DOI: 10.1016/j.envpol.2018.02.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 01/16/2018] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
The combined pollution of radionuclides and heavy metals has been given rise to widespread concern during uranium mining. The influence of As(V) on U(VI) immobilization by Mucor circinelloides (M. circinelloides) was investigated using batch experiments. The activity of antioxidative enzymes and concentrations of thiol compounds and organic acid in M. circinelloides increased to respond to different U(VI) and As(V) stress. The morphological structure of M. circinelloides changed obviously under U(VI) and As(V) stress by SEM and TEM analysis. The results of XANES and EXAFS analysis showed that U(VI) was mainly reduced to nano-uraninite (nano-UO2, 30.1%) in U400, while only 9.7% of nano-UO2 was observed in the presence of As(V) in U400-As400 due to the formation of uranyl arsenate precipitate (Trögerite, 48.6%). These observations will provide the fundamental data for fungal remediation of uranium and heavy metals in uranium-contaminated soils.
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Affiliation(s)
- Wencheng Song
- Anhui Province Key Laboratory of Medical Physics Technology and Center of Medical Physics and Technology, Hefei Institutes of Physical Sciences and Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei 230031, PR China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Xiangxue Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Zhongshan Chen
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Guodong Sheng
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China; College of Chemistry and Chemical Engineering, Shaoxing University, Zhejiang 312000, PR China
| | - Tasawar Hayat
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences, Soochow University, 215123, Suzhou, PR China
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences, Soochow University, 215123, Suzhou, PR China; NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Yubing Sun
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China.
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28
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Shah F, Mali T, Lundell TK. Polyporales Brown Rot Species Fomitopsis pinicola: Enzyme Activity Profiles, Oxalic Acid Production, and Fe 3+-Reducing Metabolite Secretion. Appl Environ Microbiol 2018; 84:e02662-17. [PMID: 29439983 PMCID: PMC5881074 DOI: 10.1128/aem.02662-17] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/01/2018] [Indexed: 02/05/2023] Open
Abstract
Basidiomycota fungi in the order Polyporales are specified to decomposition of dead wood and woody debris and thereby are crucial players in the degradation of organic matter and cycling of carbon in the forest ecosystems. Polyporales wood-decaying species comprise both white rot and brown rot fungi, based on their mode of wood decay. While the white rot fungi are able to attack and decompose all the lignocellulose biopolymers, the brown rot species mainly cause the destruction of wood polysaccharides, with minor modification of the lignin units. The biochemical mechanism of brown rot decay of wood is still unclear and has been proposed to include a combination of nonenzymatic oxidation reactions and carbohydrate-active enzymes. Therefore, a linking approach is needed to dissect the fungal brown rot processes. We studied the brown rot Polyporales species Fomitopsis pinicola by following mycelial growth and enzyme activity patterns and generating metabolites together with Fenton-promoting Fe3+-reducing activity for 3 months in submerged cultures supplemented with spruce wood. Enzyme activities to degrade hemicellulose, cellulose, proteins, and chitin were produced by three Finnish isolates of F. pinicola Substantial secretion of oxalic acid and a decrease in pH were notable. Aromatic compounds and metabolites were observed to accumulate in the fungal cultures, with some metabolites having Fe3+-reducing activity. Thus, F. pinicola demonstrates a pattern of strong mycelial growth leading to the active production of carbohydrate- and protein-active enzymes, together with the promotion of Fenton biochemistry. Our findings point to fungal species-level "fine-tuning" and variations in the biochemical reactions leading to the brown rot type of wood decay.IMPORTANCEFomitopsis pinicola is a common fungal species in boreal and temperate forests in the Northern Hemisphere encountered as a wood-colonizing saprotroph and tree pathogen, causing a severe brown rot type of wood degradation. However, its lignocellulose-decomposing mechanisms have remained undiscovered. Our approach was to explore both the enzymatic activities and nonenzymatic Fenton reaction-promoting activities (Fe3+ reduction and metabolite production) by cultivating three isolates of F. pinicola in wood-supplemented cultures. Our findings on the simultaneous production of versatile enzyme activities, including those of endoglucanase, xylanase, β-glucosidase, chitinase, and acid peptidase, together with generation of low pH, accumulation of oxalic acid, and Fe3+-reducing metabolites, increase the variations of fungal brown rot decay mechanisms. Furthermore, these findings will aid us in revealing the wood decay proteomic, transcriptomic, and metabolic activities of this ecologically important forest fungal species.
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Affiliation(s)
- Firoz Shah
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Tuulia Mali
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Taina K Lundell
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
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Cai XH, Lin RH, Wu J, He JB, Wu YC, Wang XY. Adsorption of ethylenediaminetetraacetic dianhydride modified oxalate decarboxylase on calcium oxalate. Biotech Histochem 2018; 93:220-229. [DOI: 10.1080/10520295.2017.1420820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- XH Cai
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - RH Lin
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - J Wu
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - JB He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - YC Wu
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
| | - XY Wang
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, Guangxi, PR China
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Qi Z, Yu J, Shen L, Yu Z, Yu M, Du Y, Zhang R, Song T, Yin X, Zhou Y, Li H, Wei Q, Liu Y. Enhanced resistance to rice blast and sheath blight in rice (oryza sativa L.) by expressing the oxalate decarboxylase protein Bacisubin from Bacillus subtilis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 265:51-60. [PMID: 29223342 DOI: 10.1016/j.plantsci.2017.09.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 05/05/2023]
Abstract
Oxalate decarboxylase (OxDC), catalyzing the degradation of oxalic acid, is widely distributed in varieties of organisms. In this study, an oxalate decarboxylase gene from Bacillus subtilis strain BS-916, Bacisubin, was transformed into rice variety Nipponbare to generate transgenic rice with increased OxDC activity. Pathogenicity test revealed that the transgenic rice showed enhanced resistance to rice blast and sheath blight. Further RNA-seq analysis between Nipponbare WT (wild type) and transgenic rice identified 1764 DEGs (Differentially expressed genes) including 723 up-regulated unigenes and 1041 down-regulated unigenes. Five GO terms including single-organism process and oxidation-reduction process were significantly enriched in the up-regulated genes. Interestingly, five genes encoding glutaredoxin and one gene encoding MADS box were up- and down-regulated in the transgenic rice, respectively. Collectively, our study advances the understanding of OxDC in resistance to rice disease and its possible mechanisms. Our results also suggest that OxDC would be an effective antifungal protein preventing fungal infection in transgenic rice.
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Affiliation(s)
- Zhongqiang Qi
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Junjie Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Lerong Shen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Zhenxian Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Mina Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Yan Du
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Rongsheng Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Tianqiao Song
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Xiaole Yin
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Yuxin Zhou
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Huanhuan Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Qian Wei
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China
| | - Yongfeng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, Jiangsu Province, People's Republic of China.
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Mali T, Kuuskeri J, Shah F, Lundell TK. Interactions affect hyphal growth and enzyme profiles in combinations of coniferous wood-decaying fungi of Agaricomycetes. PLoS One 2017; 12:e0185171. [PMID: 28953947 PMCID: PMC5617175 DOI: 10.1371/journal.pone.0185171] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/07/2017] [Indexed: 12/21/2022] Open
Abstract
Fomitopsis pinicola is a species of Polyporales frequently encountered in Nordic temperate and boreal forests. In nature, the fungus causes destructive brown rot in wood, colonizing tree trunks often occupied by other Basidiomycota species. We mimicked these species-species interactions by introducing F. pinicola to five white rot species, all common saprotrophs of Norway spruce. Hyphal interactions and mycelial growth in various combinations were recorded, while activities of lignocellulose-acting CAZymes and oxidoreductases were followed in co-cultures on two different carbon-source media. Of the species, Phlebia radiata and Trichaptum abietinum were the strongest producers of lignin-modifying oxidoreductases (laccase, manganese peroxidase) when evaluated alone, as well as in co-cultures, on the two different growth media (low-nitrogen liquid medium containing ground coniferous wood, and malt extract broth). F. pinicola was an outstanding producer of oxalic acid (up to 61 mM), whereas presence of P. radiata prevented acidification of the growth environment in the liquid malt-extract cultures. When enzyme profiles of the species combinations were clustered, time-dependent changes were observed on wood-supplemented medium during the eight weeks of growth. End-point acidity and production of mycelium, oxalic acid and oxidoreductase activities, in turn clustered the fungal combinations into three distinct functional groups, determined by the presence of F. pinicola and P. radiata, by principal component analysis. Our findings indicate that combinations of wood-decay fungi have dramatic dynamic effects on the production of lignocellulose-active enzymes, which may lead to divergent degradative processes of dead wood and forest litter.
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Affiliation(s)
- Tuulia Mali
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, Viikki Campus, University of Helsinki, Helsinki, Finland
| | - Jaana Kuuskeri
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, Viikki Campus, University of Helsinki, Helsinki, Finland
| | - Firoz Shah
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, Viikki Campus, University of Helsinki, Helsinki, Finland
| | - Taina Kristina Lundell
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, Viikki Campus, University of Helsinki, Helsinki, Finland
- * E-mail:
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Hu X, Qin L, Roberts DP, Lakshman DK, Gong Y, Maul JE, Xie L, Yu C, Li Y, Hu L, Liao X, Liao X. Characterization of mechanisms underlying degradation of sclerotia of Sclerotinia sclerotiorum by Aspergillus aculeatus Asp-4 using a combined qRT-PCR and proteomic approach. BMC Genomics 2017; 18:674. [PMID: 28859614 PMCID: PMC5580281 DOI: 10.1186/s12864-017-4016-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/04/2017] [Indexed: 11/10/2022] Open
Abstract
Background The biological control agent Aspergillus aculeatus Asp-4 colonizes and degrades sclerotia of Sclerotinia sclerotiorum resulting in reduced germination and disease caused by this important plant pathogen. Molecular mechanisms of mycoparasites underlying colonization, degradation, and reduction of germination of sclerotia of this and other important plant pathogens remain poorly understood. Results An RNA-Seq screen of Asp-4 growing on autoclaved, ground sclerotia of S. sclerotiorum for 48 h identified 997 up-regulated and 777 down-regulated genes relative to this mycoparasite growing on potato dextrose agar (PDA) for 48 h. qRT-PCR time course experiments characterized expression dynamics of select genes encoding enzymes functioning in degradation of sclerotial components and management of environmental conditions, including environmental stress. This analysis suggested co-temporal up-regulation of genes functioning in these two processes. Proteomic analysis of Asp-4 growing on this sclerotial material for 48 h identified 26 up-regulated and 6 down-regulated proteins relative to the PDA control. Certain proteins with increased abundance had putative functions in degradation of polymeric components of sclerotia and the mitigation of environmental stress. Conclusions Our results suggest co-temporal up-regulation of genes involved in degradation of sclerotial compounds and mitigation of environmental stress. This study furthers the analysis of mycoparasitism of sclerotial pathogens by providing the basis for molecular characterization of a previously uncharacterized mycoparasite-sclerotial interaction. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-4016-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaojia Hu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Lu Qin
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Daniel P Roberts
- Sustainable Agricultural Systems Laboratory, Henry A. Wallace Beltsville Agricultural Research Center, USDA-Agricultural Research Service, Beltsville, MD, 20705-2350, USA.
| | - Dilip K Lakshman
- Sustainable Agricultural Systems Laboratory, Henry A. Wallace Beltsville Agricultural Research Center, USDA-Agricultural Research Service, Beltsville, MD, 20705-2350, USA
| | - Yangmin Gong
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Jude E Maul
- Sustainable Agricultural Systems Laboratory, Henry A. Wallace Beltsville Agricultural Research Center, USDA-Agricultural Research Service, Beltsville, MD, 20705-2350, USA
| | - Lihua Xie
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Changbing Yu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Yinshui Li
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Lei Hu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Xiangsheng Liao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China
| | - Xing Liao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, People's Republic of China.
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Marinović M, Aguilar-Pontes MV, Zhou M, Miettinen O, de Vries RP, Mäkelä MR, Hildén K. Temporal transcriptome analysis of the white-rot fungus Obba rivulosa shows expression of a constitutive set of plant cell wall degradation targeted genes during growth on solid spruce wood. Fungal Genet Biol 2017; 112:47-54. [PMID: 28754284 DOI: 10.1016/j.fgb.2017.07.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/10/2017] [Accepted: 07/13/2017] [Indexed: 12/19/2022]
Abstract
The basidiomycete white-rot fungus Obba rivulosa, a close relative of Gelatoporia (Ceriporiopsis) subvermispora, is an efficient degrader of softwood. The dikaryotic O. rivulosa strain T241i (FBCC949) has been shown to selectively remove lignin from spruce wood prior to depolymerization of plant cell wall polysaccharides, thus possessing potential in biotechnological applications such as pretreatment of wood in pulp and paper industry. In this work, we studied the time-course of the conversion of spruce by the genome-sequenced monokaryotic O. rivulosa strain 3A-2, which is derived from the dikaryon T241i, to get insight into transcriptome level changes during prolonged solid state cultivation. During 8-week cultivation, O. rivulosa expressed a constitutive set of genes encoding putative plant cell wall degrading enzymes. High level of expression of the genes targeted towards all plant cell wall polymers was detected at 2-week time point, after which majority of the genes showed reduced expression. This implicated non-selective degradation of lignin by the O. rivulosa monokaryon and suggests high variation between mono- and dikaryotic strains of the white-rot fungi with respect to their abilities to convert plant cell wall polymers.
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Affiliation(s)
- Mila Marinović
- Division of Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, Viikinkaari 9, Helsinki, Finland
| | - Maria Victoria Aguilar-Pontes
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Miaomiao Zhou
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Otto Miettinen
- Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - Ronald P de Vries
- Division of Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, Viikinkaari 9, Helsinki, Finland; Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Miia R Mäkelä
- Division of Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, Viikinkaari 9, Helsinki, Finland
| | - Kristiina Hildén
- Division of Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, Viikinkaari 9, Helsinki, Finland.
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34
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Grąz M, Jarosz-Wilkołazka A, Janusz G, Mazur A, Wielbo J, Koper P, Żebracki K, Kubik-Komar A. Transcriptome-based analysis of the saprophytic fungus Abortiporus biennis – response to oxalic acid. Microbiol Res 2017; 199:79-88. [DOI: 10.1016/j.micres.2017.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 01/30/2017] [Accepted: 03/10/2017] [Indexed: 01/23/2023]
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35
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Biological functions controlled by manganese redox changes in mononuclear Mn-dependent enzymes. Essays Biochem 2017; 61:259-270. [PMID: 28487402 DOI: 10.1042/ebc20160070] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/05/2017] [Accepted: 03/17/2017] [Indexed: 02/06/2023]
Abstract
Remarkably few enzymes are known to employ a mononuclear manganese ion that undergoes changes in redox state during catalysis. Many questions remain to be answered about the role of substrate binding and/or protein environment in modulating the redox properties of enzyme-bound Mn(II), the nature of the dioxygen species involved in the catalytic mechanism, and how these enzymes acquire Mn(II) given that many other metal ions in the cell form more stable protein complexes. Here, we summarize current knowledge concerning the structure and mechanism of five mononuclear manganese-dependent enzymes: superoxide dismutase, oxalate oxidase (OxOx), oxalate decarboxylase (OxDC), homoprotocatechuate 3,4-dioxygenase, and lipoxygenase (LOX). Spectroscopic measurements and/or computational studies suggest that Mn(III)/Mn(II) are the catalytically active oxidation states of the metal, and the importance of 'second-shell' hydrogen bonding interactions with metal ligands has been demonstrated for a number of examples. The ability of these enzymes to modulate the redox properties of the Mn(III)/Mn(II) couple, thereby allowing them to generate substrate-based radicals, appears essential for accessing diverse chemistries of fundamental importance to organisms in all branches of life.
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36
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Chemical modification of oxalate decarboxylase to improve adsorption capacity. Int J Biol Macromol 2017; 98:495-501. [DOI: 10.1016/j.ijbiomac.2017.02.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/31/2017] [Accepted: 02/02/2017] [Indexed: 01/25/2023]
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37
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Mattila H, Kuuskeri J, Lundell T. Single-step, single-organism bioethanol production and bioconversion of lignocellulose waste materials by phlebioid fungal species. BIORESOURCE TECHNOLOGY 2017; 225:254-261. [PMID: 27898315 DOI: 10.1016/j.biortech.2016.11.082] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/18/2016] [Accepted: 11/19/2016] [Indexed: 05/16/2023]
Abstract
Ethanol production from non-pretreated lignocellulose was carried out in a consolidated bioprocess with wood-decay fungi of phlebioid Polyporales. Ethanol production was attempted on glucose, spruce wood sawdust and waste core board. Substantial quantities of ethanol were achieved, and isolate Phlebia radiata 0043 produced 5.9g/L of ethanol reaching the yield of 10.4% ethanol from core board lignocellulose substrate. Acidic initial culture conditions (pH 3) induced ethanol fermentation compared to the more neutral environment. Together with bioethanol, the fungi were able to produce organic acids such as oxalate and fumarate, thus broadening their capacity and applicability as efficient organisms to be utilized for bioconversion of various lignocelluloses. In conclusion, fungi of Phlebia grow on, convert and saccharify solid lignocellulose waste materials without pre-treatments resulting in accumulation of ethanol and organic acids. These findings will aid in applying fungal biotechnology for production of biofuels and biocompounds.
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Affiliation(s)
- Hans Mattila
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, FI-00014 Helsinki, Finland
| | - Jaana Kuuskeri
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, FI-00014 Helsinki, Finland
| | - Taina Lundell
- Microbiology and Biotechnology, Department of Food and Environmental Sciences, University of Helsinki, FI-00014 Helsinki, Finland.
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Zhu Y, Mahaney J, Jellison J, Cao J, Gressler J, Hoffmeister D, Goodell B. Fungal variegatic acid and extracellular polysaccharides promote the site-specific generation of reactive oxygen species. J Ind Microbiol Biotechnol 2016; 44:329-338. [PMID: 28032229 DOI: 10.1007/s10295-016-1889-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/14/2016] [Indexed: 01/19/2023]
Abstract
This study aims to clarify the role of variegatic acid (VA) in fungal attack by Serpula lacrymans, and also the generation and scavenging of reactive oxygen species (ROS) by the fungus. VA promotes a mediated Fenton reaction to generated ROS after oxalate solubilizes oxidized forms of iron. The fungal extracellular matrix (ECM) β-glucan scavenged ROS, and we propose this as a mechanism to protect the fungal hyphae while ROS generation is promoted to deconstruct the lignocellulose cell wall. A relatively high pH (4.4) also favored Fe(III) transfer from oxalate to VA as opposed to a lower pH (2.2) conditions, suggesting a pH-dependent Fe(III) transfer to VA employed by S. lacrymans. This permits ROS generation within the higher pH of the cell wall, while limiting ROS production near the fungal hyphae, while β-glucan from the fungal ECM scavenges ROS in the more acidic environments surrounding the fungal hyphae.
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Affiliation(s)
- Yuan Zhu
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, China.,Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA, USA
| | - James Mahaney
- Edward Via Virginia College of Osteopathic Medicine, Blacksburg, VA, USA
| | - Jody Jellison
- Center for Agriculture, Food and the Environment, 319 Stockbridge Hall, University of Massachusetts, Amherst, MA, USA
| | - Jinzhen Cao
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, China.
| | - Julia Gressler
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-Universität Jena, Jena, Germany
| | - Dirk Hoffmeister
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-Universität Jena, Jena, Germany
| | - Barry Goodell
- Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA, USA.
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Liang X, Moomaw EW, Rollins JA. Fungal oxalate decarboxylase activity contributes to Sclerotinia sclerotiorum early infection by affecting both compound appressoria development and function. MOLECULAR PLANT PATHOLOGY 2015; 16:825-36. [PMID: 25597873 PMCID: PMC6638544 DOI: 10.1111/mpp.12239] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Sclerotinia sclerotiorum pathogenesis requires the accumulation of high levels of oxalic acid (OA). To better understand the factors affecting OA accumulation, two putative oxalate decarboxylase (OxDC) genes (Ss-odc1 and Ss-odc2) were characterized. Ss-odc1 transcripts exhibited significant accumulation in vegetative hyphae, apothecia, early stages of compound appressorium development and during plant colonization. Ss-odc2 transcripts, in contrast, accumulated significantly only during mid to late stages of compound appressorium development. Neither gene was induced by low pH or exogenous OA in vegetative hyphae. A loss-of-function mutant for Ss-odc1 (Δss-odc1) showed wild-type growth, morphogenesis and virulence, and was not characterized further. Δss-odc2 mutants hyperaccumulated OA in vitro, were less efficient at compound appressorium differentiation and exhibited a virulence defect which could be fully bypassed by wounding the host plant prior to inoculation. All Δss-odc2 phenotypes were restored to the wild-type by ectopic complementation. An S. sclerotiorum strain overexpressing Ss-odc2 exhibited strong OxDC, but no oxalate oxidase activity. Increasing inoculum nutrient levels increased compound appressorium development, but not penetration efficiency, of Δss-odc2 mutants. Together, these results demonstrate differing roles for S. sclerotiorum OxDCs, with Odc2 playing a significant role in host infection related to compound appressorium formation and function.
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Affiliation(s)
- Xiaofei Liang
- Department of Plant Pathology, University of Florida, PO Box 110680, Gainesville, FL, 32611-0680, USA
| | - Ellen W Moomaw
- Department of Chemistry and Biochemistry, Kennesaw State University, 1000 Chastain Road, MD# 1203, Kennesaw, GA, 30144, USA
| | - Jeffrey A Rollins
- Department of Plant Pathology, University of Florida, PO Box 110680, Gainesville, FL, 32611-0680, USA
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40
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Fukuzumi S. Artificial photosynthesis for production of hydrogen peroxide and its fuel cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1857:604-611. [PMID: 26365231 DOI: 10.1016/j.bbabio.2015.08.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/21/2015] [Accepted: 08/29/2015] [Indexed: 01/14/2023]
Abstract
The reducing power released from photosystem I (PSI) via ferredoxin enables the reduction of NADP(+) to NADPH, which is essential in the Calvin-Benson cycle to make sugars in photosynthesis. Alternatively, PSI can reduce O2 to produce hydrogen peroxide as a fuel. This article describes the artificial version of the photocatalytic production of hydrogen peroxide from water and O2 using solar energy. Hydrogen peroxide is used as a fuel in hydrogen peroxide fuel cells to make electricity. The combination of the photocatalytic H2O2 production from water and O2 using solar energy with one-compartment H2O2 fuel cells provides on-site production and usage of H2O2 as a more useful and promising solar fuel than hydrogen. This article is part of a Special Issue entitled Biodesign for Bioenergetics--The design and engineering of electronc transfer cofactors, proteins and protein networks, edited by Ronald L. Koder and J.L. Ross Anderson.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, ALCA and SENTAN, Japan Science and Technology Agency (JST), Osaka University, Suita, Osaka 565-0871, Japan; Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea; Faculty of Science and Technology, Meijo University and ALCA and SENTAN, Japan Science and Technology Agency (JST), Tempaku, Nagoya, Aichi 468-8502, Japan.
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41
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Twahir UT, Stedwell CN, Lee CT, Richards NGJ, Polfer NC, Angerhofer A. Observation of superoxide production during catalysis of Bacillus subtilis oxalate decarboxylase at pH 4. Free Radic Biol Med 2015; 80:59-66. [PMID: 25526893 PMCID: PMC4355160 DOI: 10.1016/j.freeradbiomed.2014.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 12/05/2014] [Accepted: 12/08/2014] [Indexed: 01/02/2023]
Abstract
This contribution describes the trapping of the hydroperoxyl radical at a pH of 4 during turnover of wild-type oxalate decarboxylase and its T165V mutant using the spin-trap BMPO. Radicals were detected and identified by a combination of EPR and mass spectrometry. Superoxide, or its conjugate acid, the hydroperoxyl radical, is expected as an intermediate in the decarboxylation and oxidation reactions of the oxalate monoanion, both of which are promoted by oxalate decarboxylase. Another intermediate, the carbon dioxide radical anion was also observed. The quantitative yields of superoxide trapping are similar in the wild type and the mutant while it is significantly different for the trapping of the carbon dioxide radical anion. This suggests that the two radicals are released from different sites of the protein.
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Affiliation(s)
- Umar T Twahir
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | - Corey N Stedwell
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | - Cory T Lee
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | - Nigel G J Richards
- Department of Chemistry & Chemical Biology, Indiana University Purdue University, Indianapolis, Indianapolis, IN 46202, USA
| | - Nicolas C Polfer
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | - Alexander Angerhofer
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA.
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42
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He J, Lin R, Li H, Long H, Xuan J, He C, Lan Y. Adsorption of EDTA onto calcium oxalate monohydrate. RSC Adv 2015. [DOI: 10.1039/c5ra16498b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effects of contact time (A) and temperature (B) for the adsorption of EDTA onto CaOx monohydrate crystals.
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Affiliation(s)
- Junbin He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Rihui Lin
- Key Laboratory of New Techniques for Chemical and Biological Conversion Process
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning
- PR China
| | - He Li
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Han Long
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Jincai Xuan
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Chaohong He
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
| | - Yurong Lan
- Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources
- School of Marine Sciences and Biotechnology
- Guangxi University for Nationalities
- Nanning
- PR China
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43
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Thakker C, Martínez I, Li W, San KY, Bennett GN. Metabolic engineering of carbon and redox flow in the production of small organic acids. J Ind Microbiol Biotechnol 2014; 42:403-22. [PMID: 25502283 DOI: 10.1007/s10295-014-1560-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 11/24/2014] [Indexed: 11/26/2022]
Abstract
The review describes efforts toward metabolic engineering of production of organic acids. One aspect of the strategy involves the generation of an appropriate amount and type of reduced cofactor needed for the designed pathway. The ability to capture reducing power in the proper form, NADH or NADPH for the biosynthetic reactions leading to the organic acid, requires specific attention in designing the host and also depends on the feedstock used and cell energetic requirements for efficient metabolism during production. Recent work on the formation and commercial uses of a number of small mono- and diacids is discussed with redox differences, major biosynthetic precursors and engineering strategies outlined. Specific attention is given to those acids that are used in balancing cell redox or providing reduction equivalents for the cell, such as formate, which can be used in conjunction with metabolic engineering of other products to improve yields. Since a number of widely studied acids derived from oxaloacetate as an important precursor, several of these acids are covered with the general strategies and particular components summarized, including succinate, fumarate and malate. Since malate and fumarate are less reduced than succinate, the availability of reduction equivalents and level of aerobiosis are important parameters in optimizing production of these compounds in various hosts. Several other more oxidized acids are also discussed as in some cases, they may be desired products or their formation is minimized to afford higher yields of more reduced products. The placement and connections among acids in the typical central metabolic network are presented along with the use of a number of specific non-native enzymes to enhance routes to high production, where available alternative pathways and strategies are discussed. While many organic acids are derived from a few precursors within central metabolism, each organic acid has its own special requirements for high production and best compatibility with host physiology.
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Affiliation(s)
- Chandresh Thakker
- Department of Biochemistry and Cell Biology, Rice University, Houston, TX, USA
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44
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Osińska-Jaroszuk M, Wlizło K, Szałapata K, Jarosz-Wilkołazka A. Correlation between the production of exopolysaccharides and oxalic acid secretion by Ganoderma applanatum and Tyromyces palustris. World J Microbiol Biotechnol 2014; 30:3065-74. [PMID: 25178492 PMCID: PMC4210633 DOI: 10.1007/s11274-014-1733-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 08/26/2014] [Indexed: 02/01/2023]
Abstract
The secretion of exopolysaccharides and oxalic acid in cultures of a white rot Ganoderma applanatum strain and a brown rot Tyromyces palustris strain were tested in terms of culture time, pH range, and temperature. The high yield of exopolysaccharides (EPS) required a moderate temperature of 28 °C for G. applanatum and 20 °C for T. palustris. G. applanatum and T. palustris accumulated more EPS when the concentration of the carbon source (maltose for G. applanatum and fructose for T. palustris) was 30 g/L. The results indicate that the production of oxalic acid by G. applanatum is correlated with the initial pH value of the culture medium and the concentration of oxalic acid increased to 1.66 ± 0.2 mM at the initial pH of 6.5 during the fungal growth. During the growth of T. palustris, the reduction of the initial pH value of the growing medium lowered the oxalic acid concentration from 7.7 ± 0.6 mM at pH 6.0 to 1.99 ± 0.2 mM at pH 3.5. T. palustris accumulated considerably more oxalic acid than G. applanatum and its presence did not affect significantly the production of exopolysaccharides. We also observed that the maximum amounts of exopolysaccharides secreted during cultivation of G. applanatum and T. palustris were 45.8 ± 1.2 and 19.1 ± 1.2 g/L, respectively.
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Affiliation(s)
- Monika Osińska-Jaroszuk
- Department of Biochemistry, Maria Curie-Sklodowska University, Akademicka Street 19, 20-033, Lublin, Poland,
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45
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Oxalate production by fungi: significance in geomycology, biodeterioration and bioremediation. FUNGAL BIOL REV 2014. [DOI: 10.1016/j.fbr.2014.05.001] [Citation(s) in RCA: 219] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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46
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Mäkelä MR, Donofrio N, de Vries RP. Plant biomass degradation by fungi. Fungal Genet Biol 2014; 72:2-9. [PMID: 25192611 DOI: 10.1016/j.fgb.2014.08.010] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/19/2014] [Accepted: 08/25/2014] [Indexed: 12/27/2022]
Abstract
Plant biomass degradation by fungi has implications for several fields of science. The enzyme systems employed by fungi for this are broadly used in various industrial sectors such as food & feed, pulp & paper, detergents, textile, wine, and more recently biofuels and biochemicals. In addition, the topic is highly relevant in the field of plant pathogenic fungi as they degrade plant biomass to either gain access to the plant or as carbon source, resulting in significant crop losses. Finally, fungi are the main degraders of plant biomass in nature and as such have an essential role in the global carbon cycle and ecology in general. In this review we provide a global view on the development of this research topic in saprobic ascomycetes and basidiomycetes and in plant pathogenic fungi and link this to the other papers of this special issue on plant biomass degradation by fungi.
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Affiliation(s)
- Miia R Mäkelä
- Department of Food and Environmental Sciences, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland
| | - Nicole Donofrio
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19716, USA
| | - Ronald P de Vries
- Fungal Physiology, CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; Fungal Molecular Physiology, Utrecht University, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.
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47
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Cadmium induced oxalic acid secretion and its role in metal uptake and detoxification mechanisms in Phanerochaete chrysosporium. Appl Microbiol Biotechnol 2014; 99:435-43. [DOI: 10.1007/s00253-014-5986-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 07/21/2014] [Accepted: 07/23/2014] [Indexed: 11/25/2022]
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Winestrand S, Sjöde A, Cassland P, Hildén L, Nilvebrant NO, Jönsson LJ. Evaluation of Oxalate Decarboxylases in Industrial Bleaching Filtrates and in Pulp-Mill Experiments. Ind Biotechnol (New Rochelle N Y) 2014. [DOI: 10.1089/ind.2014.0001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Sandra Winestrand
- Department of Chemistry and Biomedical Sciences, Karlstad University, Karlstad, Sweden
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - Anders Sjöde
- Department of Chemistry and Biomedical Sciences, Karlstad University, Karlstad, Sweden
- Borregaard, Sarpsborg, Norway
| | | | | | - Nils-Olof Nilvebrant
- Department of Chemistry and Biomedical Sciences, Karlstad University, Karlstad, Sweden
- Borregaard, Sarpsborg, Norway
| | - Leif J. Jönsson
- Department of Chemistry and Biomedical Sciences, Karlstad University, Karlstad, Sweden
- Department of Chemistry, Umeå University, Umeå, Sweden
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49
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Mäkelä MR, Sietiö OM, de Vries RP, Timonen S, Hildén K. Oxalate-metabolising genes of the white-rot fungus Dichomitus squalens are differentially induced on wood and at high proton concentration. PLoS One 2014; 9:e87959. [PMID: 24505339 PMCID: PMC3914892 DOI: 10.1371/journal.pone.0087959] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/03/2014] [Indexed: 11/23/2022] Open
Abstract
Oxalic acid is a prevalent fungal metabolite with versatile roles in growth and nutrition, including degradation of plant biomass. However, the toxicity of oxalic acid makes regulation of its intra- and extracellular concentration crucial. To increase the knowledge of fungal oxalate metabolism, a transcriptional level study on oxalate-catabolising genes was performed with an effective lignin-degrading white-rot fungus Dichomitus squalens, which has demonstrated particular abilities in production and degradation of oxalic acid. The expression of oxalic-acid decomposing oxalate decarboxylase (ODC) and formic-acid decomposing formate dehydrogenase (FDH) encoding genes was followed during the growth of D. squalens on its natural spruce wood substrate. The effect of high proton concentration on the regulation of the oxalate-catabolising genes was determined after addition of organic acid (oxalic acid) and inorganic acid (hydrochloric acid) to the liquid cultures of D. squalens. In order to evaluate the co-expression of oxalate-catabolising and manganese peroxidase (MnP) encoding genes, the expression of one MnP encoding gene, mnp1, of D. squalens was also surveyed in the solid state and liquid cultures. Sequential action of ODC and FDH encoding genes was detected in the studied cultivations. The odc1, fdh2 and fdh3 genes of D. squalens showed constitutive expression, whereas ODC2 and FHD1 most likely are the main responsible enzymes for detoxification of high concentrations of oxalic and formic acids. The results also confirmed the central role of ODC1 when D. squalens grows on coniferous wood. Phylogenetic analysis revealed that fungal ODCs have evolved from at least two gene copies whereas FDHs have a single ancestral gene. As a conclusion, the multiplicity of oxalate-catabolising genes and their differential regulation on wood and in acid-amended cultures of D. squalens point to divergent physiological roles for the corresponding enzymes.
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Affiliation(s)
- Miia R. Mäkelä
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, Viikki Biocenter 1, University of Helsinki, Helsinki, Finland
| | - Outi-Maaria Sietiö
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, Viikki Biocenter 1, University of Helsinki, Helsinki, Finland
| | | | - Sari Timonen
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, Viikki Biocenter 1, University of Helsinki, Helsinki, Finland
| | - Kristiina Hildén
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, Viikki Biocenter 1, University of Helsinki, Helsinki, Finland
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50
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Campomanes P, Kellett WF, Easthon LM, Ozarowski A, Allen KN, Angerhofer A, Rothlisberger U, Richards NGJ. Assigning the EPR fine structure parameters of the Mn(II) centers in Bacillus subtilis oxalate decarboxylase by site-directed mutagenesis and DFT/MM calculations. J Am Chem Soc 2014; 136:2313-23. [PMID: 24444454 PMCID: PMC4004257 DOI: 10.1021/ja408138f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Oxalate decarboxylase (OxDC) catalyzes the Mn-dependent conversion of the oxalate monoanion into CO2 and formate. EPR-based strategies for investigating the catalytic mechanism of decarboxylation are complicated by the difficulty of assigning the signals associated with the two Mn(II) centers located in the N- and C-terminal cupin domains of the enzyme. We now report a mutational strategy that has established the assignment of EPR fine structure parameters to each of these Mn(II) centers at pH 8.5. These experimental findings are also used to assess the performance of a multistep strategy for calculating the zero-field splitting parameters of protein-bound Mn(II) ions. Despite the known sensitivity of calculated D and E values to the computational approach, we demonstrate that good estimates of these parameters can be obtained using cluster models taken from carefully optimized DFT/MM structures. Overall, our results provide new insights into the strengths and limitations of theoretical methods for understanding electronic properties of protein-bound Mn(II) ions, thereby setting the stage for future EPR studies on the electronic properties of the Mn(II) centers in OxDC and site-specific variants.
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Affiliation(s)
- Pablo Campomanes
- Laboratory of Computational Chemistry and Biochemistry, Ecole Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland
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