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Jia C, Chai R, Zhang M, Guo X, Zhou X, Ding N, Lei C, Dong Z, Zhao J, Ren H, Lu D. Improvement of Saccharomyces cerevisiae strain tolerance to vanillin through heavy ion radiation combined with adaptive laboratory evolution. J Biotechnol 2024; 394:112-124. [PMID: 39197754 DOI: 10.1016/j.jbiotec.2024.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 08/12/2024] [Accepted: 08/23/2024] [Indexed: 09/01/2024]
Abstract
Vanillin is an inhibitor of lignocellulose hydrolysate, which can reduce the ability of Saccharomyces cerevisiae to utilize lignocellulose, which is an important factor limiting the development of the ethanol fermentation industry. In this study, mutants of vanillin-tolerant yeast named H6, H7, X3, and X8 were bred by heavy ion irradiation (HIR) combined with adaptive laboratory evolution (ALE). Phenotypic tests revealed that the mutants outperformed the original strain WT in tolerance, growth rate, genetic stability and fermentation ability. At 1.6 g/L vanillin concentration, the average OD600 value obtained for mutant strains was 0.95 and thus about 3.4-fold higher than for the wild-type. When the concentration of vanillin was 2.0 g/L, the glucose utilization rate of the mutant was 86.3 % within 96 h, while that of the original strain was only 70.0 %. At this concentration of vanillin, the mitochondrial membrane potential of the mutant strain recovered faster than that of the original strain, and the ROS scavenging ability was stronger. We analyzed the whole transcriptome sequencing map and the whole genome resequencing of the mutant, and found that DEGs such as FLO9, GRC3, PSP2 and SWF1, which have large differential expression multiples and obvious mutation characteristics, play an important role in cell flocculation, rDNA transcription, inhibition of DNA polymerase mutation and protein palmitoylation. These functions can help cells resist vanillin stress. The results show that combining HIR with ALE is an effective mutagenesis strategy. This approach can efficiently obtain Saccharomyces cerevisiae mutants with improved vanillin tolerance, and provide reference for obtaining robust yeast strains with lignocellulose inhibitor tolerance.
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Affiliation(s)
- Chenglin Jia
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ran Chai
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
| | - Miaomiao Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaopeng Guo
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Xiang Zhou
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nan Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cairong Lei
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ziyi Dong
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingru Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiwei Ren
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
| | - Dong Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Systems metabolic engineering upgrades Corynebacterium glutamicum to high-efficiency cis, cis-muconic acid production from lignin-based aromatics. Metab Eng 2023; 75:153-169. [PMID: 36563956 DOI: 10.1016/j.ymben.2022.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/14/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Lignin displays a highly challenging renewable. To date, massive amounts of lignin, generated in lignocellulosic processing facilities, are for the most part merely burned due to lacking value-added alternatives. Aromatic lignin monomers of recognized relevance are in particular vanillin, and to a lesser extent vanillate, because they are accessible at high yield from softwood-lignin using industrially operated alkaline oxidative depolymerization. Here, we metabolically engineered C. glutamicum towards cis, cis-muconate (MA) production from these key aromatics. Starting from the previously created catechol-based producer C. glutamicum MA-2, systems metabolic engineering first discovered an unspecific aromatic aldehyde reductase that formed aromatic alcohols from vanillin, protocatechualdehyde, and p- hydroxybenzaldehyde, and was responsible for the conversion up to 57% of vanillin into vanillyl alcohol. The alcohol was not re-consumed by the microbe later, posing a strong drawback on the producer. The identification and subsequent elimination of the encoding fudC gene completely abolished vanillyl alcohol formation. Second, the initially weak flux through the native vanillin and vanillate metabolism was enhanced up to 2.9-fold by implementing synthetic pathway modules. Third, the most efficient protocatechuate decarboxylase AroY for conversion of the midstream pathway intermediate protocatechuate into catechol was identified out of several variants in native and codon optimized form and expressed together with the respective helper proteins. Fourth, the streamlined modules were all genomically combined which yielded the final strain MA-9. MA-9 produced bio-based MA from vanillin, vanillate, and seven structurally related aromatics at maximum selectivity. In addition, MA production from softwood-based vanillin, obtained through alkaline depolymerization, was demonstrated.
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Khattab IM, Fischer J, Kaźmierczak A, Thines E, Nick P. Ferulic acid is a putative surrender signal to stimulate programmed cell death in grapevines after infection with Neofusicoccum parvum. PLANT, CELL & ENVIRONMENT 2023; 46:339-358. [PMID: 36263963 DOI: 10.1111/pce.14468] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/12/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
An apoplectic breakdown from grapevine trunk diseases (GTDs) has become a serious challenge to viticulture as a consequence of drought stress. We hypothesize that fungal aggressiveness is controlled by a chemical communication between the host and colonizing fungus. We introduce the new concept of a 'plant surrender signal' accumulating in host plants under stress and facilitating the aggressive behaviour of the strain Neofusicoccum parvum (Bt-67) causing Botryosphaeriaceae-related dieback in grapevines. Using a cell-based experimental system (Vitis cells) and bioactivity-guided fractionation, we identify trans-ferulic acid, a monolignol precursor, as a 'surrender signal'. We show that this signal specifically activates the secretion of the fungal phytotoxin fusicoccin A aglycone. We show further that this phytotoxin, mediated by 14-3-3 proteins, activates programmed cell death in Vitis cells. We arrive at a model showing a chemical communication facilitating fusicoccin A secretion that drives necrotrophic behaviour during Botryosphaeriaceae-Vitis interaction through trans-ferulic acid. We thus hypothesize that channelling the phenylpropanoid pathway from this lignin precursor to the trans-resveratrol phytoalexin could be a target for future therapy.
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Affiliation(s)
- Islam M Khattab
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
- Department of Horticulture, Faculty of Agriculture, Damanhour University, Damanhour, Egypt
| | - Jochen Fischer
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH, Kaiserslautern, Germany
| | - Andrzej Kaźmierczak
- Department of Cytophysiology, Institute of Experimental Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Eckhard Thines
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH, Kaiserslautern, Germany
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Leriche-Grandchamp M, Flourat A, Shen H, Picard F, Giordana H, Allais F, Fayeulle A. Inhibition of Phenolics Uptake by Ligninolytic Fungal Cells and Its Potential as a Tool for the Production of Lignin-Derived Aromatic Building Blocks. J Fungi (Basel) 2020; 6:jof6040362. [PMID: 33322772 PMCID: PMC7770579 DOI: 10.3390/jof6040362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 01/03/2023] Open
Abstract
Lignin is the principal natural source of phenolics but its structural complexity and variability make it difficult to valorize through chemical depolymerization approaches. White rots are one of the rare groups of organisms that are able to degrade lignin in ecosystems. This biodegradation starts through extracellular enzymes producing oxidizing agents to depolymerize lignin and continue with the uptake of the generated oligomers by fungal cells for further degradation. Phanerochaete chrysosporium is one of the most studied species for the elucidation of these biodegradation mechanisms. Although the extracellular depolymerization step appears interesting for phenolics production from lignin, the uptake and intracellular degradation of oligomers occurring in the course of the depolymerization limits its potential. In this study, we aimed at inhibiting the phenolics uptake mechanism through metabolic inhibitors to favor extracellular oligomers accumulation without preventing the ligninases production that is necessary for extracellular depolymerization. The use of sodium azide confirmed that an active transportation phenomenon is involved in the phenolics uptake in P. chrysosporium. A protocol based on carbonyl cyanide m-chlorophenyl hydrazone enabled reaching 85% inhibition for vanillin uptake. This protocol was shown not to inhibit, but on the contrary, to stimulate the depolymerization of both dehydrogenation polymers (DHPs) and industrial purified lignins.
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Affiliation(s)
| | - Amandine Flourat
- AgroParisTech, CEBB, URD Agro-Biotechnologies Industrielles (ABI), 51110 Pomacle, France
| | - Hangchen Shen
- AgroParisTech, CEBB, URD Agro-Biotechnologies Industrielles (ABI), 51110 Pomacle, France
- TIMR (Integrated Transformations of Renewable Matter), ESCOM, Centre de Recherche Royallieu, Université de Technologie de Compiègne, CS 60 319, 60203 Compiègne, France
| | - Flavien Picard
- AgroParisTech, CEBB, URD Agro-Biotechnologies Industrielles (ABI), 51110 Pomacle, France
- TIMR (Integrated Transformations of Renewable Matter), ESCOM, Centre de Recherche Royallieu, Université de Technologie de Compiègne, CS 60 319, 60203 Compiègne, France
| | - Heloïse Giordana
- AgroParisTech, CEBB, URD Agro-Biotechnologies Industrielles (ABI), 51110 Pomacle, France
- TIMR (Integrated Transformations of Renewable Matter), ESCOM, Centre de Recherche Royallieu, Université de Technologie de Compiègne, CS 60 319, 60203 Compiègne, France
| | - Florent Allais
- AgroParisTech, CEBB, URD Agro-Biotechnologies Industrielles (ABI), 51110 Pomacle, France
| | - Antoine Fayeulle
- TIMR (Integrated Transformations of Renewable Matter), ESCOM, Centre de Recherche Royallieu, Université de Technologie de Compiègne, CS 60 319, 60203 Compiègne, France
- Correspondence:
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Abstract
Lignin is an abundant aromatic polymer found in plant secondary cell walls. In recent years, lignin has attracted renewed interest as a feedstock for bio-based chemicals via catalytic and biological approaches and has emerged as a target for genetic engineering to improve lignocellulose digestibility by altering its composition. In lignin biosynthesis and microbial conversion, small phenolic lignin precursors or degradation products cross membrane bilayers through an unidentified translocation mechanism prior to incorporation into lignin polymers (synthesis) or catabolism (bioconversion), with both passive and transporter-assisted mechanisms postulated. To test the passive permeation potential of these phenolics, we performed molecular dynamics simulations for 69 monomeric and dimeric lignin-related phenolics with 3 model membranes to determine the membrane partitioning and permeability coefficients for each compound. The results support an accessible passive permeation mechanism for most compounds, including monolignols, dimeric phenolics, and the flavonoid, tricin. Computed lignin partition coefficients are consistent with concentration enrichment near lipid carbonyl groups, and permeability coefficients are sufficient to keep pace with cellular metabolism. Interactions between methoxy and hydroxy groups are found to reduce membrane partitioning and improve permeability. Only carboxylate-modified or glycosylated lignin phenolics are predicted to require transporters for membrane translocation. Overall, the results suggest that most lignin-related compounds can passively traverse plant and microbial membranes on timescales commensurate with required biological activities, with any potential transport regulation mechanism in lignin synthesis, catabolism, or bioconversion requiring compound functionalization.
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Rönnander J, Ljunggren J, Hedenström E, Wright SAI. Biotransformation of vanillin into vanillyl alcohol by a novel strain of Cystobasidium laryngis isolated from decaying wood. AMB Express 2018; 8:137. [PMID: 30143905 PMCID: PMC6109037 DOI: 10.1186/s13568-018-0666-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/17/2018] [Indexed: 11/19/2022] Open
Abstract
Vanillin is an aromatic aldehyde found as a component of lignocellulosic material, and in the cured pods of orchidaceae plants. Like other phenolic substances, vanillin has antimicrobial activity and can be extracted from lignin either by a thermo-chemical process or through microbial degradation. Vanillin, can serve as a model monomer in biodegradation studies of lignin. In the present study, a yeast isolated from decaying wood on the Faroe Islands, was identified as Cystobasidium laryngis strain FMYD002, based on internal transcribed spacer sequence analysis. It demonstrated the ability to convert vanillin to vanillyl alcohol, as detected by ultra-high performance liquid chromatography-quadrupole-time-of-flight. Structural analysis of vanillyl alcohol was carried out by using gas chromatography-mass spectrometry and 1H NMR spectroscopy, and further verified by synthesis. The reduction of vanillin to vanillyl alcohol has been documented for only a few species of fungi. However, to our knowledge, this biotransformation has not yet been reported for basidiomycetous yeast species, nor for any representative of the subphylum Pucciniomycotina. The biotransformation capability of the present strain might prove useful in the industrial utilisation of lignocellulosic residues.
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Affiliation(s)
- Jonas Rönnander
- Faculty of Engineering and Sustainable Development, University of Gävle, 80176, Gävle, Sweden.
| | - Joel Ljunggren
- Department of Chemical Engineering, Mid Sweden University, 85170, Sundsvall, Sweden
| | - Erik Hedenström
- Department of Chemical Engineering, Mid Sweden University, 85170, Sundsvall, Sweden
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Meyer F, Netzer J, Meinert C, Voigt B, Riedel K, Steinbüchel A. A proteomic analysis of ferulic acid metabolism in Amycolatopsis sp. ATCC 39116. Appl Microbiol Biotechnol 2018; 102:6119-6142. [DOI: 10.1007/s00253-018-9061-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/26/2018] [Accepted: 04/29/2018] [Indexed: 10/16/2022]
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Xie Y, Gu Z, Herath HMSK, Gu M, He C, Wang F, Jiang X, Zhang J, Zhang Y. Evaluation of bacterial biodegradation and accumulation of phenanthrene in the presence of humic acid. CHEMOSPHERE 2017; 184:482-488. [PMID: 28618280 DOI: 10.1016/j.chemosphere.2017.06.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 05/17/2017] [Accepted: 06/07/2017] [Indexed: 06/07/2023]
Abstract
This study evaluated the effect of humic acid (HA) on physicochemical properties of bacterial surfaces and on mass transfer of polycyclic aromatic hydrocarbons (PAHs) from aqueous phase into intracellular bacteria. Due to this process' potential for bacterial degradation, using Sphingobium sp. PHE3, degradation of phenanthrene (PHE) was compared in HA and non-HA sets. The results showed that approximately 51.1% of PHE at a concentration of 102.0 mg L-1 was biodegraded in the non-HA sets, whereas almost all PHE was biodegraded with HA after 72 h. Interestingly, PHE that accumulated in the intracellular bacteria reached 3.80 mg L-1 for the HA sets, which was significantly higher than that of non-HA. Lipid inclusion bodies appeared when Sphingobium sp. PHE3 was treated with HA. The results were further confirmed by the enhanced bacterial surface sorption capacity for the HA sets. Therefore, we concluded that added HA not only act as carriers and biosurfactants facilitating PHE uptake but also adjust bacteria cell wall properties for internalizing PHE, which ultimately overcame the PHE bioavailability resulting in enhanced biodegradation.
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Affiliation(s)
- Yun Xie
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhenggui Gu
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China
| | - H M S K Herath
- Department of Export Agriculture, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Passara Road, Badulla, 90 000, Sri Lanka
| | - Minfen Gu
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China
| | - Chang He
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China
| | - Fang Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xin Jiang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Jie Zhang
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China.
| | - Yinping Zhang
- Nanjing Normal University, School of Chemistry and Materials Science, Center for Analysis and Testing, Nanjing 210046, China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
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9
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Cillingová A, Zeman I, Tóth R, Neboháčová M, Dunčková I, Hölcová M, Jakúbková M, Gérecová G, Pryszcz LP, Tomáška Ľ, Gabaldón T, Gácser A, Nosek J. Eukaryotic transporters for hydroxyderivatives of benzoic acid. Sci Rep 2017; 7:8998. [PMID: 28827635 PMCID: PMC5566891 DOI: 10.1038/s41598-017-09408-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 07/24/2017] [Indexed: 11/09/2022] Open
Abstract
Several yeast species catabolize hydroxyderivatives of benzoic acid. However, the nature of carriers responsible for transport of these compounds across the plasma membrane is currently unknown. In this study, we analyzed a family of genes coding for permeases belonging to the major facilitator superfamily (MFS) in the pathogenic yeast Candida parapsilosis. Our results revealed that these transporters are functionally equivalent to bacterial aromatic acid: H+ symporters (AAHS) such as GenK, MhbT and PcaK. We demonstrate that the genes HBT1 and HBT2 encoding putative transporters are highly upregulated in C. parapsilosis cells assimilating hydroxybenzoate substrates and the corresponding proteins reside in the plasma membrane. Phenotypic analyses of knockout mutants and hydroxybenzoate uptake assays provide compelling evidence that the permeases Hbt1 and Hbt2 transport the substrates that are metabolized via the gentisate (3-hydroxybenzoate, gentisate) and 3-oxoadipate pathway (4-hydroxybenzoate, 2,4-dihydroxybenzoate and protocatechuate), respectively. Our data support the hypothesis that the carriers belong to the AAHS family of MFS transporters. Phylogenetic analyses revealed that the orthologs of Hbt permeases are widespread in the subphylum Pezizomycotina, but have a sparse distribution among Saccharomycotina lineages. Moreover, these analyses shed additional light on the evolution of biochemical pathways involved in the catabolic degradation of hydroxyaromatic compounds.
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Affiliation(s)
- Andrea Cillingová
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Igor Zeman
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Renáta Tóth
- Department of Microbiology, University of Szeged, Szeged, Közép fasor 52, H-6726, Szeged, Hungary
| | - Martina Neboháčová
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Ivana Dunčková
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Mária Hölcová
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Michaela Jakúbková
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Gabriela Gérecová
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic.,Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Dr. Bohr Gasse 9, 1030, Vienna, Austria
| | - Leszek P Pryszcz
- Bioinformatics and Genomics Programme, Centre for Genomic Regulation, Doctor Aiguader 88, 08003, Barcelona, Spain.,International Institute of Molecular and Cell Biology in Warsaw, 4 Trojdena Street, 02-109, Warsaw, Poland
| | - Ľubomír Tomáška
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic
| | - Toni Gabaldón
- Bioinformatics and Genomics Programme, Centre for Genomic Regulation, Doctor Aiguader 88, 08003, Barcelona, Spain.,Departament de Ciències Experimentals I de la Salut, Universitat Pompeu Fabra, 08003, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys 23, 08010, Barcelona, Spain
| | - Attila Gácser
- Department of Microbiology, University of Szeged, Szeged, Közép fasor 52, H-6726, Szeged, Hungary
| | - Jozef Nosek
- Departments of Biochemistry and Genetics, Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, 842 15, Bratislava, Slovak Republic.
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Cajthaml T. Biodegradation of endocrine-disrupting compounds by ligninolytic fungi: mechanisms involved in the degradation. Environ Microbiol 2014; 17:4822-34. [DOI: 10.1111/1462-2920.12460] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 03/16/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Tomáš Cajthaml
- Institute of Microbiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
- Institute for Environmental Studies; Faculty of Science; Charles University in Prague; Prague Czech Republic
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11
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Mathieu Y, Prosper P, Buée M, Dumarçay S, Favier F, Gelhaye E, Gérardin P, Harvengt L, Jacquot JP, Lamant T, Meux E, Mathiot S, Didierjean C, Morel M. Characterization of a Phanerochaete chrysosporium glutathione transferase reveals a novel structural and functional class with ligandin properties. J Biol Chem 2012; 287:39001-11. [PMID: 23007392 DOI: 10.1074/jbc.m112.402776] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Glutathione S-transferases (GSTs) form a superfamily of multifunctional proteins with essential roles in cellular detoxification processes. A new fungal specific class of GST has been highlighted by genomic approaches. The biochemical and structural characterization of one isoform of this class in Phanerochaete chrysosporium revealed original properties. The three-dimensional structure showed a new dimerization mode and specific features by comparison with the canonical GST structure. An additional β-hairpin motif in the N-terminal domain prevents the formation of the regular GST dimer and acts as a lid, which closes upon glutathione binding. Moreover, this isoform is the first described GST that contains all secondary structural elements, including helix α4' in the C-terminal domain, of the presumed common ancestor of cytosolic GSTs (i.e. glutaredoxin 2). A sulfate binding site has been identified close to the glutathione binding site and allows the binding of 8-anilino-1-naphtalene sulfonic acid. Competition experiments between 8-anilino-1-naphtalene sulfonic acid, which has fluorescent properties, and various molecules showed that this GST binds glutathionylated and sulfated compounds but also wood extractive molecules, such as vanillin, chloronitrobenzoic acid, hydroxyacetophenone, catechins, and aldehydes, in the glutathione pocket. This enzyme could thus function as a classical GST through the addition of glutathione mainly to phenethyl isothiocyanate, but alternatively and in a competitive way, it could also act as a ligandin of wood extractive compounds. These new structural and functional properties lead us to propose that this GST belongs to a new class that we name GSTFuA, for fungal specific GST class A.
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Affiliation(s)
- Yann Mathieu
- Université de Lorraine, Interactions Arbre-Microorganismes, UMR 1136, Institut Fédératif de Recherche 110 EFABA, Vandoeuvre-lès-Nancy F-54506, France
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12
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Decarboxylation of Ferulic Acid to 4-Vinyl Guaiacol by Streptomyces setonii. Appl Biochem Biotechnol 2011; 166:289-99. [DOI: 10.1007/s12010-011-9424-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 10/18/2011] [Indexed: 10/15/2022]
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13
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Chen L, Yang X, Raza W, Li J, Liu Y, Qiu M, Zhang F, Shen Q. Trichoderma harzianum SQR-T037 rapidly degrades allelochemicals in rhizospheres of continuously cropped cucumbers. Appl Microbiol Biotechnol 2010; 89:1653-63. [PMID: 20972783 DOI: 10.1007/s00253-010-2948-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 10/11/2010] [Accepted: 10/11/2010] [Indexed: 10/18/2022]
Abstract
To alleviate the stress of continuous cropping for cucumber continuous cropping (CCC) system, a beneficial fungus Trichoderma harzianum SQR-T037 (SQR-T037) was isolated and applied to soil to degrade allelochemicals exuded from cucumber plants in a Rhizobox experiment. The following phenolic acids (PAs), classified as allelochemicals, were isolated and identified from cucumber rhizospheres: 4-hydroxybenzoic acid, vanillic acid, ferulic acid, benzoic acid, 3-phenylpropionic acid, and cinnamic acid. Mixed PAs added in potato dextrose broth, each with 0.2 gram per liter, were completely degraded by SQR-T037 after 170 h of incubation. In Rhizobox experiments, inoculation of SQR-T037 in the CCC soil also degraded the PAs exuded from cucumber plant roots. This degradation was 88.8% for 4-hydroxybenzoic acid, 90% for vanillic acid, 95% for benzoic acid, and 100% for ferulic acid, 3-phenylpropionic acid, and cinnamic acid at 45 days after plantation. Simultaneously, a significant (p ≥ 0.05) decrease in the disease index of Fusarium wilt and an increase in dry weights of cucumber plants were obtained in pot experiments by application of SQR-T037. This was mostly attributed to degradation of PAs exuded from cucumber roots in CCC soil by SQR-T037 and alleviation of the allelopathic stress. Application of beneficial microorganisms, such as SQR-T037 that biodegrades allelochemicals, is a highly efficient way to resolve the problems associated with continuous cropping system.
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Affiliation(s)
- Lihua Chen
- Jiangsu Key Laboratory for Solid Organic Waste Utilization, Nanjing Agriculture University, Nanjing 210095, China
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Rosa A, Atzeri A, Deiana M, Melis MP, Incani A, Corona G, Loru D, Appendino G, Dessì MA. Protective effect of vanilloids against tert-butyl hydroperoxide-induced oxidative stress in vero cells culture. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:3546-3553. [PMID: 18439017 DOI: 10.1021/jf073448t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This study investigated the effect of synthetic capsiate, a simplified analogue of capsiate, and vanillyl alcohol on the oxidative stress induced by tert-butyl hydroperoxide (TBH) in a line of fibroblasts derived from monkey kidney (Vero cells). In response to the TBH-mediated oxidative stress, a reduction of the levels of total unsaturated fatty acids and cholesterol was observed, and a rise in the concentrations of conjugated dienes fatty acids hydroperoxides and 7-ketocholesterol. Pretreatment with both synthetic capsiate and vanillyl alcohol preserved Vero cells from oxidative damage and showed a remarkable protective effect on the reduction of the levels of total unsaturated fatty acids and cholesterol, inhibiting the increase of MDA, conjugated dienes fatty acids hydroperoxides, and 7-ketocholesterol. Both compounds were effective against peroxidation of cell membrane lipids induced by TBH, with synthetic capsiate essentially acting as a pro-drug of vanillyl alcohol, its hydrophilic hydrolytic derivative.
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Affiliation(s)
- Antonella Rosa
- Dip. Biologia Sperimentale, Sez. Patologia Sperimentale, Università degli Studi di Cagliari, Cittadella Universitaria, SS 554, Km 4.5, 09042 Monserrato, Cagliari, Italy.
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15
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Shimizu M, Wariishi H. Development of a sample preparation method for fungal proteomics. FEMS Microbiol Lett 2005; 247:17-22. [PMID: 15927743 DOI: 10.1016/j.femsle.2005.04.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2004] [Accepted: 04/14/2005] [Indexed: 11/22/2022] Open
Abstract
Since filamentous fungi including basidiomycetous fungi possess an exceptionally robust cell wall as in microorganisms, effective extraction of intracellular proteins is a key step for fungal proteomic studies. To overcome the experimental obstacle caused by cell walls, we utilized fungal protoplasts, prepared from the brown-rot basidiomycete, Tyromyces palustris. The amount and quality of proteins extracted from the protoplast cells were much higher than that from the mycelial cells. Quantitative comparisons of proteome maps prepared from mycelial and protoplast cells indicated protein spots with a wider range of molecular weights and pIs in the protoplast sample. Furthermore, no streaking or tailing was observed in the protoplasts, suggesting that effective extraction of intracellular proteins from protoplasts might help suppress degradation of proteins during this process. In addition to the efficiency of protein extraction, simple and efficient subcellular fractionation was also achieved using protoplast cells.
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Affiliation(s)
- Motoyuki Shimizu
- Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka, Japan
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