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Cuamatzi-Flores J, Nava-Galicia S, Esquivel-Naranjo EU, Lopez Munguia A, Arroyo-Becerra A, Villalobos-López MA, Bibbins-Martínez M. Regulation of dye-decolorizing peroxidase gene expression in Pleurotus ostreatus grown on glycerol as the carbon source. PeerJ 2024; 12:e17467. [PMID: 38827301 PMCID: PMC11144388 DOI: 10.7717/peerj.17467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 05/05/2024] [Indexed: 06/04/2024] Open
Abstract
Dye-decolorizing peroxidases (DyPs) (E.C. 1.11.1.19) are heme peroxidases that catalyze oxygen transfer reactions similarly to oxygenases. DyPs utilize hydrogen peroxide (H2O2) both as an electron acceptor co-substrate and as an electron donor when oxidized to their respective radicals. The production of both DyPs and lignin-modifying enzymes (LMEs) is regulated by the carbon source, although less readily metabolizable carbon sources do improve LME production. The present study analyzed the effect of glycerol on Pleurotus ostreatus growth, total DyP activity, and the expression of three Pleos-dyp genes (Pleos-dyp1, Pleos-dyp2 and Pleos-dyp4), via real-time RT-qPCR, monitoring the time course of P. ostreatus cultures supplemented with either glycerol or glucose and Acetyl Yellow G (AYG) dye. The results obtained indicate that glycerol negatively affects P. ostreatus growth, giving a biomass production of 5.31 and 5.62 g/L with respective growth rates (micra; m) of 0.027 and 0.023 h-1 for fermentations in the absence and presence of AYG dye. In contrast, respective biomass production levels of 7.09 and 7.20 g/L and growth rates (μ) of 0.033 and 0.047 h-1 were observed in equivalent control fermentations conducted with glucose in the absence and presence of AYG dye. Higher DyP activity levels, 4,043 and 4,902 IU/L, were obtained for fermentations conducted on glycerol, equivalent to 2.6-fold and 3.16-fold higher than the activity observed when glucose is used as the carbon source. The differential regulation of the DyP-encoding genes in P. ostreatus were explored, evaluating the carbon source, the growth phase, and the influence of the dye. The global analysis of the expression patterns throughout the fermentation showed the up- and down- regulation of the three Pleos-dyp genes evaluated. The highest induction observed for the control media was that found for the Pleos-dyp1 gene, which is equivalent to an 11.1-fold increase in relative expression (log2) during the stationary phase of the culture (360 h), and for the glucose/AYG media was Pleos-dyp-4 with 8.28-fold increase after 168 h. In addition, glycerol preferentially induced the Pleos-dyp1 and Pleos-dyp2 genes, leading to respective 11.61 and 4.28-fold increases after 144 h. After 360 and 504 h of culture, 12.86 and 4.02-fold increases were observed in the induction levels presented by Pleos-dyp1 and Pleos-dyp2, respectively, in the presence of AYG. When transcription levels were referred to those found in the control media, adding AYG led to up-regulation of the three dyp genes throughout the fermentation. Contrary to the fermentation with glycerol, where up- and down-regulation was observed. The present study is the first report describing the effect of a less-metabolizable carbon source, such as glycerol, on the differential expression of DyP-encoding genes and their corresponding activity.
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Affiliation(s)
- Jorge Cuamatzi-Flores
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Tlaxcala, México
| | - Soley Nava-Galicia
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Tlaxcala, México
| | | | - Agustin Lopez Munguia
- Instituto de Biotecnología, Universidad Autónoma de México, Cuernavaca, Morelos, México
| | - Analilia Arroyo-Becerra
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Tlaxcala, México
| | | | - Martha Bibbins-Martínez
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Tlaxcala, México
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Nakazawa T, Kawauchi M, Otsuka Y, Han J, Koshi D, Schiphof K, Ramírez L, Pisabarro AG, Honda Y. Pleurotus ostreatus as a model mushroom in genetics, cell biology, and material sciences. Appl Microbiol Biotechnol 2024; 108:217. [PMID: 38372792 PMCID: PMC10876731 DOI: 10.1007/s00253-024-13034-4] [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: 11/10/2023] [Revised: 01/11/2024] [Accepted: 01/25/2024] [Indexed: 02/20/2024]
Abstract
Pleurotus ostreatus, also known as the oyster mushroom, is a popular edible mushroom cultivated worldwide. This review aims to survey recent progress in the molecular genetics of this fungus and demonstrate its potential as a model mushroom for future research. The development of modern molecular genetic techniques and genome sequencing technologies has resulted in breakthroughs in mushroom science. With efficient transformation protocols and multiple selection markers, a powerful toolbox, including techniques such as gene knockout and genome editing, has been developed, and numerous new findings are accumulating in P. ostreatus. These include molecular mechanisms of wood component degradation, sexual development, protein secretion systems, and cell wall structure. Furthermore, these techniques enable the identification of new horizons in enzymology, biochemistry, cell biology, and material science through protein engineering, fluorescence microscopy, and molecular breeding. KEY POINTS: • Various genetic techniques are available in Pleurotus ostreatus. • P. ostreatus can be used as an alternative model mushroom in genetic analyses. • New frontiers in mushroom science are being developed using the fungus.
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Affiliation(s)
- Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Yuitsu Otsuka
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Junxian Han
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Daishiro Koshi
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Kim Schiphof
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan
| | - Lucía Ramírez
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarra (UPNA), 31006, Pamplona, Spain
| | - Antonio G Pisabarro
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarra (UPNA), 31006, Pamplona, Spain
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Oiwake-Cho, Kitashirakawa, Sakyo-Ku, Kyoto, 606-8502, Japan.
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Yarden O, Zhang J, Marcus D, Changwal C, Mabjeesh SJ, Lipzen A, Zhang Y, Savage E, Ng V, Grigoriev IV, Hadar Y. Altered Expression of Two Small Secreted Proteins ( ssp4 and ssp6) Affects the Degradation of a Natural Lignocellulosic Substrate by Pleurotus ostreatus. Int J Mol Sci 2023; 24:16828. [PMID: 38069150 PMCID: PMC10705924 DOI: 10.3390/ijms242316828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Pleurotus ostreatus is a white-rot fungus that can degrade lignin in a preferential manner using a variety of extracellular enzymes, including manganese and versatile peroxidases (encoded by the vp1-3 and mnp1-6 genes, respectively). This fungus also secretes a family of structurally related small secreted proteins (SSPs) encoded by the ssp1-6 genes. Using RNA sequencing (RNA-seq), we determined that ssp4 and ssp6 are the predominant members of this gene family that were expressed by P. ostreatus during the first three weeks of growth on wheat straw. Downregulation of ssp4 in a strain harboring an ssp RNAi construct (KDssp1) was then confirmed, which, along with an increase in ssp6 transcript levels, coincided with reduced lignin degradation and the downregulation of vp2 and mnp1. In contrast, we observed an increase in the expression of genes related to pectin and side-chain hemicellulose degradation, which was accompanied by an increase in extracellular pectin-degrading capacity. Genome-wide comparisons between the KDssp1 and the wild-type strains demonstrated that ssp silencing conferred accumulated changes in gene expression at the advanced cultivation stages in an adaptive rather than an inductive mode of transcriptional response. Based on co-expression networking, crucial gene modules were identified and linked to the ssp knockdown genotype at different cultivation times. Based on these data, as well as previous studies, we propose that P. ostreatus SSPs have potential roles in modulating the lignocellulolytic and pectinolytic systems, as well as a variety of fundamental biological processes related to fungal growth and development.
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Affiliation(s)
- Oded Yarden
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (D.M.); (C.C.); (Y.H.)
| | - Jiwei Zhang
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, Saint Paul, MN 55108, USA;
| | - Dor Marcus
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (D.M.); (C.C.); (Y.H.)
| | - Chunoti Changwal
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (D.M.); (C.C.); (Y.H.)
| | - Sameer J. Mabjeesh
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel;
| | - Anna Lipzen
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (A.L.); (Y.Z.); (E.S.); (V.N.); (I.V.G.)
| | - Yu Zhang
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (A.L.); (Y.Z.); (E.S.); (V.N.); (I.V.G.)
| | - Emily Savage
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (A.L.); (Y.Z.); (E.S.); (V.N.); (I.V.G.)
| | - Vivian Ng
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (A.L.); (Y.Z.); (E.S.); (V.N.); (I.V.G.)
| | - Igor V. Grigoriev
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (A.L.); (Y.Z.); (E.S.); (V.N.); (I.V.G.)
- Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA 94720, USA
| | - Yitzhak Hadar
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (D.M.); (C.C.); (Y.H.)
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Nakazawa T, Yamaguchi I, Zhang Y, Saka C, Wu H, Kayama K, Kawauchi M, Sakamoto M, Honda Y. Experimental evidence that lignin-modifying enzymes are essential for degrading plant cell wall lignin by Pleurotus ostreatus using CRISPR/Cas9. Environ Microbiol 2023; 25:1909-1924. [PMID: 37218079 DOI: 10.1111/1462-2920.16427] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/10/2023] [Indexed: 05/24/2023]
Abstract
Lignin-modifying enzymes (LMEs), which include laccases (Lacs), manganese peroxidases (MnPs), versatile peroxidases (VPs), and lignin peroxidases (LiPs), have been considered key factors in lignin degradation by white-rot fungi because they oxidize lignin model compounds and depolymerize synthetic lignin in vitro. However, it remains unclear whether these enzymes are essential/important in the actual degradation of natural lignin in plant cell walls. To address this long-standing issue, we examined the lignin-degrading abilities of multiple mnp/vp/lac mutants of Pleurotus ostreatus. One vp2/vp3/mnp3/mnp6 quadruple-gene mutant was generated from a monokaryotic wild-type strain PC9 using plasmid-based CRISPR/Cas9. Also, two vp2/vp3/mnp2/mnp3/mnp6, two vp2/vp3/mnp3/mnp6/lac2 quintuple-gene mutants, and two vp2/vp3/mnp2/mnp3/mnp6/lac2 sextuple-gene mutants were generated. The lignin-degrading abilities of the sextuple and vp2/vp3/mnp2/mnp3/mnp6 quintuple-gene mutants on the Beech wood sawdust medium reduced drastically, but not so much for those of the vp2/vp3/mnp3/mnp6/lac2 mutants and the quadruple mutant strain. The sextuple-gene mutants also barely degraded lignin in Japanese Cedar wood sawdust and milled rice straw. Thus, this study presented evidence that the LMEs, especially MnPs and VPs, play a crucial role in the degradation of natural lignin by P. ostreatus for the first time.
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Affiliation(s)
| | - Iori Yamaguchi
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Yufan Zhang
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Chinami Saka
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Hongli Wu
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Keita Kayama
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | | | | | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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Liu X, Ding S, Gao F, Wang Y, Taherzadeh MJ, Wang Y, Qin X, Wang X, Luo H, Yao B, Huang H, Tu T. Exploring the cellulolytic and hemicellulolytic activities of manganese peroxidase for lignocellulose deconstruction. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:139. [PMID: 37726830 PMCID: PMC10507950 DOI: 10.1186/s13068-023-02386-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/24/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND A cost-effective pretreatment and saccharification process is a necessary prerequisite for utilizing lignocellulosic biomass (LCB) in biofuel and biomaterials production. Utilizing a multifunctional enzyme with both pretreatment and saccharification functions in a single step for simultaneous biological pretreatment and saccharification process (SPS) will be a green method of low cost and high efficiency. Manganese peroxidase (MnP, EC 1.11.1.13), a well-known lignin-degrading peroxidase, is generally preferred for the biological pretreatment of biomass. However, exploring the role and performance of MnP in LCB conversion will promote the application of MnP for lignocellulose-based biorefineries. RESULTS In this study, we explored the ability of an MnP from Moniliophthora roreri, MrMnP, in LCB degradation. With Mn2+ and H2O2, MrMnP decomposed 5.0 g/L carboxymethyl cellulose to 0.14 mM of reducing sugar with a conversion yield of 5.0 mg/g, including 40 μM cellobiose, 70 μM cellotriose, 20 μM cellotetraose, and 10 μM cellohexaose, and degraded 1.0 g/L mannohexaose to 0.33 μM mannose, 4.08 μM mannotriose, and 4.35 μM mannopentaose. Meanwhile, MrMnP decomposed 5.0 g/L lichenan to 0.85 mM of reducing sugar with a conversion yield of 30.6 mg/g, including 10 μM cellotriose, 20 μM cellotetraose, and 80 μM cellohexose independently of Mn2+ and H2O2. Moreover, the versatility of MrMnP in LCB deconstruction was further verified by decomposing locust bean gum and wheat bran into reducing sugars with a conversion yield of 54.4 mg/g and 29.5 mg/g, respectively, including oligosaccharides such as di- and tri-saccharides. The catalytic mechanism underlying MrMnP degraded lignocellulose was proposed as that with H2O2, MrMnP oxidizes Mn2+ to Mn3+. Subsequently, it forms a complex with malonate, facilitating the degradation of CMC and mannohexaose into reducing sugars. Without H2O2, MrMnP directly oxidizes malonate to hydroperoxyl acetic acid radical to form compound I, which then attacks the glucosidic bond of lichenan. CONCLUSION This study identified a new function of MrMnP in the hydrolysis of cellulose and hemicellulose, suggesting that MrMnP exhibits its versatility in the pretreatment and saccharification of LCB. The results will lead to an in-depth understanding of biocatalytic saccharification and contribute to forming new enzymatic systems for using lignocellulose resources to produce sustainable and economically viable products and the long-term development of biorefinery, thereby increasing the productivity of LCB as a green resource.
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Affiliation(s)
- Xiaoqing Liu
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Sunjia Ding
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Fang Gao
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yaru Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | | | - Yuan Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xing Qin
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiaolu Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Huiying Luo
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Bin Yao
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Huoqing Huang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Tao Tu
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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Wright R, Woof K. The genome sequence of the oyster mushroom, Pleurotus ostreatus ((Jacq.) P. Kummer, 1871). Wellcome Open Res 2023; 8:277. [PMID: 38784713 PMCID: PMC11112307 DOI: 10.12688/wellcomeopenres.19578.1] [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] [Accepted: 06/14/2023] [Indexed: 05/25/2024] Open
Abstract
We present a genome assembly from a Pleurotus ostreatus specimen (the oyster mushroom; Basidiomycota; Agaricomycetes; Agaricales; Pleurotaceae). The genome sequence is 40.6 megabases in span. Most of the assembly is scaffolded into 12 chromosomal pseudomolecules. Two mitochondrial genomes have been assembled, which are 73.1 and 9.3 kilobases in length.
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Affiliation(s)
- Richard Wright
- Royal Botanic Gardens Kew, Richmond, England, UK
- Cardiff University, Cardiff, Wales, UK
| | - Kieran Woof
- Royal Botanic Gardens Kew, Richmond, England, UK
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7
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Xu H, Nakazawa T, Zhang Y, Oh M, Bao D, Kawauchi M, Sakamoto M, Honda Y. Introducing multiple-gene mutations in Pleurotus ostreatus using a polycistronic tRNA and CRISPR guide RNA strategy. FEMS Microbiol Lett 2022; 369:6776014. [PMID: 36302144 DOI: 10.1093/femsle/fnac102] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 08/26/2022] [Accepted: 10/25/2022] [Indexed: 12/13/2022] Open
Abstract
The white-rot fungus Pleurotus ostreatus is an agaricomycete that is frequently used in molecular genetics studies as many useful tools are applicable to the fungus. In particular, efficient gene targeting using homologous recombination and CRISPR/Cas9 enables the introduction of a mutation in the gene of interest for functional analysis. Multiple genes encoding various lignocellulose-degrading enzymes are predicted to be present in the genome; therefore, analyses of multiple-gene mutants are required to elucidate the mechanisms underlying lignocellulose degradation by P. ostreatus. Conventional tools for generating multiple-gene mutations in P. ostreatus are laborious and time-consuming. Therefore, more efficient and practical methods are needed. In this study, we introduced CRISPR/Cas9-assisted multiple-gene mutations using a polycistronic tRNA and CRISPR guide RNA approach. The frequency (triple-gene mutation in fcy1, vp2, and 62347) was only 3.3% when a tetracistronic tRNA-sgRNA containing four different sgRNAs targeting fcy1, vp2, vp3, or 62347 was expressed. It increased to 20% (triple-gene mutation in vp1, vp2, and vp3) after a tricistronic tRNA-sgRNA was expressed with replaced/modulated promoter and tRNA sequences. This study demonstrated, for the first time, the applicability of a strategy to induce multiple-gene mutations in P. ostreatus in a transformation experiment.
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Affiliation(s)
- Haibo Xu
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yufan Zhang
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Minji Oh
- Mushroom division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Bisan-ro, Eumseong-gun, Chungcheongbuk-do 22709, Republic of Korea
| | - Dapeng Bao
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Masahiro Sakamoto
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Sharma P, Bano A, Singh SP, Sharma S, Xia C, Nadda AK, Lam SS, Tong YW. Engineered microbes as effective tools for the remediation of polyaromatic aromatic hydrocarbons and heavy metals. CHEMOSPHERE 2022; 306:135538. [PMID: 35792210 DOI: 10.1016/j.chemosphere.2022.135538] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/04/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) have become a major concern to human health and the environment due to rapid industrialization and urbanization. Traditional treatment measures for removing toxic substances from the environment have largely failed, and thus development and advancement in newer remediation techniques are of utmost importance. Rising environmental pollution with HMs and PAHs prompted the research on microbes and the development of genetically engineered microbes (GEMs) for reducing pollution via the bioremediation process. The enzymes produced from a variety of microbes can effectively treat a range of pollutants, but evolutionary trends revealed that various emerging pollutants are resistant to microbial or enzymatic degradation. Naturally, existing microbes can be engineered using various techniques including, gene engineering, directed evolution, protein engineering, media engineering, strain engineering, cell wall modifications, rationale hybrid design, and encapsulation or immobilization process. The immobilization of microbes and enzymes using a variety of nanomaterials, membranes, and supports with high specificity toward the emerging pollutants is also an effective strategy to capture and treat the pollutants. The current review focuses on successful bioremediation techniques and approaches that make use of GEMs or engineered enzymes. Such engineered microbes are more potent than natural strains and have greater degradative capacities, as well as rapid adaptation to various pollutants as substrates or co-metabolizers. The future for the implementation of genetic engineering to produce such organisms for the benefit of the environment andpublic health is indeed long and valuable.
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Affiliation(s)
- Pooja Sharma
- Environmental Research Institute, National University of Singapore, 1 Create Way, 138602, Singapore; Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), 1 CREATE Way, Singapore, 138602, Singapore
| | - Ambreen Bano
- IIRC-3, Plant-Microbe Interaction and Molecular Immunology Laboratory, Department of Biosciences, Faculty of Sciences, Integral University, Lucknow, UP, India
| | - Surendra Pratap Singh
- Plant Molecular Biology Laboratory, Department of Botany, Dayanand Anglo-Vedic (PG) College, Chhatrapati Shahu Ji Maharaj University, Kanpur, 208001, India
| | - Swati Sharma
- University Institute of Biotechnology, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Dehua Tubao New Decoration Material Co., Ltd., Huzhou, Zhejiang 313200, China
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, 173 234, India.
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand 248007, India.
| | - Yen Wah Tong
- Environmental Research Institute, National University of Singapore, 1 Create Way, 138602, Singapore; Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), 1 CREATE Way, Singapore, 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive, 117585, Singapore.
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9
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Improved Foods Using Enzymes from Basidiomycetes. Processes (Basel) 2022. [DOI: 10.3390/pr10040726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Within the kingdom of fungi, the division Basidiomycota represents more than 30,000 species, some with huge genomes indicating great metabolic potential. The fruiting bodies of many basidiomycetes are appreciated as food (“mushrooms”). Solid-state and submerged cultivation processes have been established for many species. Specifically, xylophilic fungi secrete numerous enzymes but also form smaller metabolites along unique pathways; both groups of compounds may be of interest to the food processing industry. To stimulate further research and not aim at comprehensiveness in the broad field, this review describes some recent progress in fermentation processes and the knowledge of fungal genetics. Processes with potential for food applications based on lipases, esterases, glycosidases, peptidases and oxidoreductases are presented. The formation and degradation of colourants, the degradation of harmful food components, the formation of food ingredients and particularly of volatile and non-volatile flavours serve as examples. In summary, edible basidiomycetes are foods—and catalysts—for food applications and rich donors of genes to construct heterologous cell factories for fermentation processes. Options arise to support the worldwide trend toward greener, more eco-friendly and sustainable processes.
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10
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Fine Mapping and Functional Analysis of the Gene PcTYR, Involved in Control of Cap Color of Pleurotus cornucopiae. Appl Environ Microbiol 2022; 88:e0217321. [PMID: 35289641 DOI: 10.1128/aem.02173-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Oyster mushrooms have a high biological efficiency and are easy to cultivate, which is why they are produced all over the world. Cap color is an important commercial trait for oyster mushrooms. Little is known about the genetic mechanism of the cap color trait in oyster mushrooms, which limits molecular breeding for the improvement of cap color-type cultivars. In this study, a 0.8-Mb major quantitative trait locus (QTL) region controlling cap color in the oyster mushroom Pleurotus cornucopiae was mapped on chromosome 7 through bulked-segregant analysis sequencing (BSA-seq) and extreme-phenotype genome-wide association studies (XP-GWAS). Candidate genes were further selected by comparative transcriptome analysis, and a tyrosinase gene (PcTYR) was identified as the highest-confidence candidate gene. Overexpression of PcTYR resulted in a significantly darker cap color, while the cap color of RNA interference (RNAi) strains for this gene was significantly lighter than that of the wild-type (WT) strains, suggesting that PcTYR plays an essential role in cap color formation. This is the first report about fine mapping and functional verification of a gene controlling cap color in oyster mushrooms. This will enhance our understanding of the genetic basis for cap color formation in oyster mushrooms and will facilitate molecular breeding for cap color. IMPORTANCE Oyster mushrooms are widely cultivated and consumed over the world for their easy cultivation and high biological efficiency (mushroom fresh weight/substrate dry weight × 100%). Fruiting bodies with dark caps are more and more popular according to consumer preferences, but dark varieties are rarely seen on the market. Little is known about the genetic mechanism of the cap color trait in oyster mushrooms, which limits molecular breeding for the improvement of cap color-type cultivars. A major QTL of cap color in oyster mushroom P. cornucopiae was fine mapped by using bulked-segregant analysis (BSA) and extreme-phenotype genome-wide association study (XP-GWAS) analysis. A candidate gene PcTYR coding tyrosinase was further identified with the help of comparative transcriptome analysis. qPCR analysis and genetic transformation tests proved that PcTYR played an essential role in cap color formation. This study will contribute to revealing the genetic mechanism of cap color formation in mushrooms, thereby facilitating molecular breeding for cap color trait.
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Zhang Y, Wu X, Huang C, Zhang Z, Gao W. Isolation and identification of pigments from oyster mushrooms with black, yellow and pink caps. Food Chem 2022; 372:131171. [PMID: 34601416 DOI: 10.1016/j.foodchem.2021.131171] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 12/28/2022]
Abstract
The genus Pleurotus, namely oyster mushroom, is widely cultivated and consumed worldwide. Cap color is an important commercial trait for oyster mushroom. Diverse color is determined by various pigment constituents. However, the pigments of oyster mushrooms are still ambiguous. In this study, we extracted and identified pigments of oyster mushroom species with black, yellow and pink cap color. The extracted pigments appearing the three color types correspondingly to the cap color, which were all identified as melanin using a panel of spectroscopic and physical/imaging techniques. Nevertheless, HPLC and elemental analysis indicated that the melanin in oyster mushrooms was actually a mixture of eumelanin and phaeomelanin. Differences in the quantities and relative proportions of eumelanin and phaeomelanin resulted in the color variation in oyster mushroom caps. Electron microscopy studies showed that the melanin units are likely located in the cell wall, as reported in other fungi. The pigments in oyster mushrooms with three different cap color were extracted and identified for the first time in this study, which provided fundamental knowledge for future studies on the mechanism of color formation in mushrooms.
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Affiliation(s)
- Yan Zhang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China; Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, China; Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xiangli Wu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China; Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Chenyang Huang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China; Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Zehua Zhang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China; Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Wei Gao
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China; Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, China.
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12
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Mihai RA, Melo Heras EJ, Florescu LI, Catana RD. The Edible Gray Oyster Fungi Pleurotus ostreatus (Jacq. ex Fr.) P. Kumm a Potent Waste Consumer, a Biofriendly Species with Antioxidant Activity Depending on the Growth Substrate. J Fungi (Basel) 2022; 8:jof8030274. [PMID: 35330276 PMCID: PMC8956126 DOI: 10.3390/jof8030274] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/25/2022] [Accepted: 03/04/2022] [Indexed: 01/27/2023] Open
Abstract
Nowadays, climate change is not the only threat facing our planet. There are also other types of pollution such as waste that poisons soils and water and kills plants, harming humans and animals. Sustainability represents a key issue for the actual Global Citizen. For this reason, our article is dedicated to offering biofriendly solutions to decrease wastes, give them a positive meaning, such as a substrate for an edible oyster fungus with nutritive and biological properties usefully for humans. Three types of wastes such as coconut coir, pine sawdust, and paper waste-representative symbols of pollution in Ecuador-have been tested as suitable growing substrate for the edible fungi Pleurotus ostreatus (Jacq. ex Fr.) P. Kumm by analyzing parameters such as Biological Efficiency, Mushroom Yield, and Productive Rate. The influence of these "waste" substrates on the nutritive (protein content), biological characteristic (antioxidant activity), and the content of human-health-sustaining compounds (phenols, flavonoids) were also evaluated using the Kjeldahal, DPPH, ABTS, FRAP, and Folin-Ciocalteu methods. The results indicate that all the waste products represent desirable substrates for growing the edible fungi, with more focus on coconut coir waste (one of the principal pollution problems in Ecuador), but that also achieved the increase in the fungi's desirable characteristics. Coconut coir waste could be an environmentally friendly solution that also offers for humans additional nutritive and healthy benefits.
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Affiliation(s)
- Raluca A. Mihai
- CICTE, Department of Life Science and Agriculture, Universidad de Las Fuerzas Armadas—ESPE, Av. General Rumiñahui s/n y, Sangolqui 171103, Ecuador;
- Correspondence:
| | - Erly J. Melo Heras
- CICTE, Department of Life Science and Agriculture, Universidad de Las Fuerzas Armadas—ESPE, Av. General Rumiñahui s/n y, Sangolqui 171103, Ecuador;
| | - Larisa I. Florescu
- Taxonomy, Ecology and Nature Conservation Department, Institute of Biology Bucharest of Romanian Academy, 296 Splaiul Independentei, 060031 Bucharest, Romania;
| | - Rodica D. Catana
- Developmental Biology Department, Institute of Biology Bucharest of Romanian Academy, 296 Splaiul Independentei, 060031 Bucharest, Romania;
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Silva ADM, Sousa J, Hultberg M, Figueiredo SA, Freitas OM, Delerue-Matos C. Fluoxetine Removal from Aqueous Solutions Using a Lignocellulosic Substrate Colonized by the White-Rot Fungus Pleurotus ostreatus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052672. [PMID: 35270364 PMCID: PMC8910386 DOI: 10.3390/ijerph19052672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/16/2022] [Accepted: 02/23/2022] [Indexed: 12/26/2022]
Abstract
One of the main challenges in both the design of new wastewater treatment plants and the expansion and improvement of existing ones is the removal of emerging pollutants. Therefore, the search for economic and sustainable treatments is needed to enhance the removal of pharmaceuticals. The potential of a lignocellulosic substrate colonized by Pleurotus ostreatus, a waste from mushroom production, to remove fluoxetine from aqueous solutions was studied. Batch assays were performed to remove 600 µg∙L−1 fluoxetine from aqueous solutions using the colonized mushroom substrate (CMS) and crude enzyme extracts. The removal efficiencies achieved were, respectively, ≥83.1% and 19.6% in 10 min. Batch assays with sterilized CMS and 1-aminobenzotriazole (to inhibit cytochrome P450 enzymes) showed that the higher removal efficiencies achieved in the CMS assays may be attributed to the synergistic contribution of biosorption onto the CMS and lignin modifying enzymes activity, namely laccase activity. A column assay was performed with the CMS, fed with 750 µg∙L−1 fluoxetine aqueous solution. The removal efficiency was 100% during 30 min, decreasing to a final value of 70% after 8 h of operation. The results suggested that CMS can be a promising eco-friendly alternative to remove fluoxetine from aqueous solutions.
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Affiliation(s)
- Andreia D. M. Silva
- REQUIMTE/LAQV—Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal; (A.D.M.S.); (J.S.); (S.A.F.); (C.D.-M.)
| | - Juliana Sousa
- REQUIMTE/LAQV—Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal; (A.D.M.S.); (J.S.); (S.A.F.); (C.D.-M.)
| | - Malin Hultberg
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp, 230 53 Skara, Sweden;
| | - Sónia A. Figueiredo
- REQUIMTE/LAQV—Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal; (A.D.M.S.); (J.S.); (S.A.F.); (C.D.-M.)
| | - Olga M. Freitas
- REQUIMTE/LAQV—Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal; (A.D.M.S.); (J.S.); (S.A.F.); (C.D.-M.)
- Correspondence:
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV—Associated Laboratory for Green Chemistry (LAQV) of the Network of Chemistry and Technology (REQUIMTE), Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal; (A.D.M.S.); (J.S.); (S.A.F.); (C.D.-M.)
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14
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Okuda N, Nakazawa T, Horii M, Wu H, Kawauchi M, Sakamoto M, Honda Y. Overexpressing Pleurotus ostreatus rho1b results in transcriptional upregulation of the putative cellulolytic enzyme-encoding genes observed in ccl1 disruptants. Environ Microbiol 2021; 23:7009-7027. [PMID: 34622510 DOI: 10.1111/1462-2920.15786] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/19/2021] [Indexed: 11/30/2022]
Abstract
The transcriptional expression pattern of lignocellulolytic enzyme-encoding genes in white-rot fungi differs depending on the culture conditions. Recently, it was shown that 13 putative cellulolytic enzyme-encoding genes were significantly upregulated in most Pleurotus ostreatus ligninolysis-deficient mutant strains on beech wood sawdust medium. However, the mechanisms by which this transcriptional shift is triggered remain unknown. In this study, we identified one mechanism. Our previous study implied that histone H3 N-dimethylation at lysine 4 level possibly affects the shift; therefore, we analysed the expression pattern in the disruptants of P. ostreatus ccl1, which encodes a putative component of the COMPASS complex mediating the methylation. The results showed upregulation of 5 of the 13 cellulolytic enzyme-encoding genes. We also found that rho1b, encoding a putative GTPase regulating signal transduction pathways, was upregulated in the ccl1 disruptants and ligninolysis-deficient strains. Upregulation of at least three of the five cellulolytic enzyme-encoding genes was observed in rho1b-overexpressing strains but not in ccl1/rho1b double-gene disruptants, during the 20-day culture period. These results suggest that Rho1b may be involved in the upregulation of cellulolytic enzyme-encoding genes observed in the ccl1 disruptants. Furthermore, we suggest that Mpk1b, a putative Agaricomycetes-specific mitogen-activated protein kinase, functions downstream of Rho1b.
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Affiliation(s)
- Nozomi Okuda
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Masato Horii
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hongli Wu
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Masahiro Sakamoto
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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15
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Sharma P, Sirohi R, Tong YW, Kim SH, Pandey A. Metal and metal(loids) removal efficiency using genetically engineered microbes: Applications and challenges. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125855. [PMID: 34492804 DOI: 10.1016/j.jhazmat.2021.125855] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/30/2021] [Accepted: 04/06/2021] [Indexed: 06/13/2023]
Abstract
The environment is being polluted in different many with metal and metalloid pollution, mostly due to anthropogenic activity, which is directly affecting human and environmental health. Metals and metalloids are highly toxic at low concentrations and contribute primarily to the survival equilibrium of activities in the environment. However, because of non-degradable, they persist in nature and these metal and metalloids bioaccumulate in the food chain. Genetically engineered microorganisms (GEMs) mediated techniques for the removal of metals and metalloids are considered an environmentally safe and economically feasible strategy. Various forms of GEMs, including fungi, algae, and bacteria have been produced by recombinant DNA and RNA technologies, which have been used to eliminate metal and metalloids compounds from the polluted areas. Besides, GEMs have the potentiality to produce enzymes and other metabolites that are capable of tolerating metals stress and detoxify the pollutants. Thus, the aim of this review is to discuss the use of GEMs as advanced tools to produce metabolites, signaling molecules, proteins through genetic expression during metal and metalloids interaction, which help in the breakdown of persistent pollutants in the environment.
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Affiliation(s)
- Pooja Sharma
- Centre for Energy and Environmental Sustainability, Lucknow 226029, Uttar Pradesh, India
| | - Ranjna Sirohi
- Department of Chemical & Biological Engineering, Korea University, Seoul 136713, Republic of Korea
| | - Yen Wah Tong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore
| | - Sang Hyoun Kim
- Department of Chemical and Environmental Engineering, Yonsei University, Seoul, Republic of Korea
| | - Ashok Pandey
- Centre for Energy and Environmental Sustainability, Lucknow 226029, Uttar Pradesh, India; Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226001, Uttar Pradesh, India.
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16
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Mushroom Ligninolytic Enzymes―Features and Application of Potential Enzymes for Conversion of Lignin into Bio-Based Chemicals and Materials. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11136161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mushroom ligninolytic enzymes are attractive biocatalysts that can degrade lignin through oxido-reduction. Laccase, lignin peroxidase, manganese peroxidase, and versatile peroxidase are the main enzymes that depolymerize highly complex lignin structures containing aromatic or aliphatic moieties and oxidize the subunits of monolignol associated with oxidizing agents. Among these enzymes, mushroom laccases are secreted glycoproteins, belonging to a polyphenol oxidase family, which have a powerful oxidizing capability that catalyzes the modification of lignin using synthetic or natural mediators by radical mechanisms via lignin bond cleavage. The high redox potential laccase within mediators can catalyze the oxidation of a wide range of substrates and the polymerization of lignin derivatives for value-added chemicals and materials. The chemoenzymatic process using mushroom laccases has been applied effectively for lignin utilization and the degradation of recalcitrant chemicals as an eco-friendly technology. Laccase-mediated grafting has also been employed to modify lignin and other polymers to obtain novel functional groups able to conjugate small and macro-biomolecules. In this review, the biochemical features of mushroom ligninolytic enzymes and their potential applications in catalytic reactions involving lignin and its derivatives to obtain value-added chemicals and novel materials in lignin valorization are discussed.
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17
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Ronzhin NO, Mogilnaya OA, Posokhina ED, Bondar VS. Reusable System for Phenol Detection in an Aqueous Medium Based on Nanodiamonds and Extracellular Oxidase from Basidiomycete Neonothopanus nambi. DOKL BIOCHEM BIOPHYS 2021; 499:220-224. [PMID: 34426915 DOI: 10.1134/s1607672921040141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/23/2022]
Abstract
A reusable system for phenol determination in an aqueous medium was obtained by adsorption of extracellular oxidase from fungus Neonothopanus nambi onto modified nanodiamonds (MND) synthesized by detonation. It was found that the enzyme strongly binds to MND and exhibits catalytic activity in the reaction of co-oxidation of phenol with 4-aminoantipyrine without the addition of hydrogen peroxide. In the presence of the MND-oxidase complex, a significantly (by an order of magnitude) higher yield of the reaction product is recorded as compared to the yield in the presence of a free enzyme; the mechanism of the revealed effect is discussed. Model experiments have demonstrated the multiple use of the MND-oxidase complex for testing phenol in aqueous samples. The immobilized enzyme exhibits functional activity during long-term (2 months) storage of the MND-oxidase complex at 4°C. The data obtained create the prerequisites for using the created system in environmental monitoring of water pollution with phenol.
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Affiliation(s)
- N O Ronzhin
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia.
| | - O A Mogilnaya
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
| | - E D Posokhina
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
| | - V S Bondar
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
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18
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Extracellular Oxidase from the Neonothopanus nambi Fungus as a Promising Enzyme for Analytical Applications. Protein J 2021; 40:731-740. [PMID: 34143382 DOI: 10.1007/s10930-021-10010-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
The extracellular enzyme with oxidase function was extracted from the Neonothopanus nambi luminescent fungus by using mild processing of mycelium with β-glucosidase and then isolated by gel-filtration chromatography. The extracted enzyme is found to be a FAD-containing protein, catalyzing phenol co-oxidation with 4-aminoantipyrine without addition of H2O2, which distinguishes it from peroxidases. This fact allowed us to assume that this enzyme may be a mixed-function oxidase. According to gel-filtration chromatography and SDS-PAGE, the oxidase has molecular weight of 60 kDa. The enzyme exhibits maximum activity at 55-70 °C and pH 5.0. Kinetic parameters Km and Vmax of the oxidase for phenol were 0.21 mM and 0.40 µM min-1. We suggest that the extracted enzyme can be useful to develop a simplified biosensor for colorimetric detection of phenol in aqueous media, which does not require using hydrogen peroxide.
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19
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A Review on the Utilization of Lignin as a Fermentation Substrate to Produce Lignin-Modifying Enzymes and Other Value-Added Products. Molecules 2021; 26:molecules26102960. [PMID: 34065753 PMCID: PMC8156730 DOI: 10.3390/molecules26102960] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/11/2022] Open
Abstract
The lignocellulosic biomass is comprised of three major components: cellulose, hemicellulose, and lignin. Among these three, cellulose and hemicellulose were already used for the generation of simple sugars and subsequent value-added products. However, lignin is the least applied material in this regard because of its complex and highly variable nature. Regardless, lignin is the most abundant material, and it can be used to produce value-added products such as lignin-modifying enzymes (LMEs), polyhydroxyalkanoates (PHAs), microbial lipids, vanillin, muconic acid, and many others. This review explores the potential of lignin as the microbial substrate to produce such products. A special focus was given to the different types of lignin and how each one can be used in different microbial and biochemical pathways to produce intermediate products, which can then be used as the value-added products or base to make other products. This review paper will summarize the effectiveness of lignin as a microbial substrate to produce value-added products through microbial fermentations. First, basic structures of lignin along with its types and chemistry are discussed. The subsequent sections highlight LMEs and how such enzymes can enhance the value of lignin by microbial degradation. A major focus was also given to the value-added products that can be produced from lignin.
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20
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Xie C, Gong W, Zhu Z, Zhou Y, Xu C, Yan L, Hu Z, Ai L, Peng Y. Comparative secretome of white-rot fungi reveals co-regulated carbohydrate-active enzymes associated with selective ligninolysis of ramie stalks. Microb Biotechnol 2021; 14:911-922. [PMID: 32798284 PMCID: PMC8085959 DOI: 10.1111/1751-7915.13647] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 06/18/2020] [Accepted: 07/21/2020] [Indexed: 12/22/2022] Open
Abstract
In the present research, Phanerochaete chrysosporium and Irpex Lacteus simultaneously degraded lignin and cellulose in ramie stalks, whereas Pleurotus ostreatus and Pleurotus eryngii could depolymerize lignin but little cellulose. Comparative proteomic analysis of these four white-rot fungi was used to investigate the molecular mechanism of this selective ligninolysis. 292 proteins, including CAZymes, sugar transporters, cytochrome P450, proteases, phosphatases and proteins with other function, were successfully identified. A total of 58 CAZyme proteins were differentially expressed, and at the same time, oxidoreductases participated in lignin degradation were expressed at higher levels in P. eryngii and P. ostreatus. Enzyme activity results indicated that cellulase activities were higher in P. chrysosporium and I. lacteus, while the activities of lignin-degrading enzymes were higher in P. eryngii and P. ostreatus. In addition to the lignocellulosic degrading enzymes, several proteins including sugar transporters, cytochrome P450 monooxygenases, peptidases, proteinases, phosphatases and kinases were also found to be differentially expressed among these four species of white-rot fungi. In summary, the protein expression patterns of P. eryngii and P. ostreatus exhibit co-upregulated oxidoreductase potential and co-downregulated cellulolytic capability relative to those of P. chrysosporium and I. lacteus, providing a mechanism consistent with selective ligninolysis by P. eryngii and P. ostreatus.
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Affiliation(s)
- Chunliang Xie
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Wenbing Gong
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Zuohua Zhu
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Yingjun Zhou
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Chao Xu
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Li Yan
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Zhenxiu Hu
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
| | - Lianzhong Ai
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
- Shanghai Engineering Research Center of Food MicrobiologySchool of Medical Instrument and Food EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093China
| | - Yuande Peng
- Institute of Bast Fiber CropsChinese Academy of Agricultural SciencesChangsha410205China
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21
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Pant G, Garlapati D, Agrawal U, Prasuna RG, Mathimani T, Pugazhendhi A. Biological approaches practised using genetically engineered microbes for a sustainable environment: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124631. [PMID: 33278727 DOI: 10.1016/j.jhazmat.2020.124631] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 10/28/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Conventional methods used to remediate toxic substances from the environment have failed drastically, and thereby, advancement in newer remediation techniques can be one of the ways to improve the quality of bioremediation. The increased environmental pollution led to the exploration of microorganisms and construction of genetically engineered microbes (GEMs) for pollution abatement through bioremediation. The present review deals with the successful bioremediation techniques and approaches practised using genetically modified or engineered microbes. In the present scenario, physical and chemical strategies have been practised for the remediation of domestic and industrial wastes but these techniques are expensive and toxic to the environment. Involving engineered microbes can provide a much safer and cost effective strategy in comparison with the other techniques. With the aid of biotechnology and genetic engineering, GEMs are designed by transforming microbes with a more potent protein to overexpress the desired character. GEMs such as bacteria, fungi and algae have been used to degrade oil spills, camphor, hexane, naphthalene, toluene, octane, xylene, halobenzoates, trichloroethylene etc. These engineered microbes are more potent than the natural strains and have higher degradative capacities with quick adaptation for various pollutants as substrates or cometabolize. The road ahead for the implementation of genetic engineering to produce such organisms for the welfare of the environment and finally, public health is indeed long and worthwhile.
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Affiliation(s)
- Gaurav Pant
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, Mathura, Uttar Pradesh, India
| | - Deviram Garlapati
- National Centre for Coastal Research, Ministry of Earth Sciences (MoES), Govt. of India, Chennai 600 100, Tamil Nadu, India
| | - Urvashi Agrawal
- Department of Biotechnology, Institute of Applied Sciences & Humanities, GLA University, Mathura, Uttar Pradesh, India
| | - R Gyana Prasuna
- Department of Microbiology & FST, GITAM Institute of Science, GITAM University, Visakhapatnam, Andhra Pradesh, India
| | - Thangavel Mathimani
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu, India
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
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22
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Álvarez-Barragán J, Cravo-Laureau C, Wick LY, Duran R. Fungi in PAH-contaminated marine sediments: Cultivable diversity and tolerance capacity towards PAH. MARINE POLLUTION BULLETIN 2021; 164:112082. [PMID: 33524832 DOI: 10.1016/j.marpolbul.2021.112082] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
The cultivable fungal diversity from PAH-contaminated sediments was examined for the tolerance to polycyclic aromatic hydrocarbon (PAH). The 85 fungal strains, isolated in non-selective media, revealed a large diversity by ribosomal internal transcribed spacer (ITS) sequencing, even including possible new species. Most strains (64%) exhibited PAH-tolerance, indicating that sediments retain diverse cultivable PAH-tolerant fungi. The PAH-tolerance was linked neither to a specific taxon nor to the peroxidase genes (LiP, MnP and Lac). Examining the PAH-removal (degradation and/or sorption), Alternaria destruens F10.81 showed the best capacity with above 80% removal for phenanthrene, pyrene and fluoranthene, and around 65% for benzo[a]pyrene. A. destruens F10.81 internalized pyrene homogenously into the hyphae that contrasted with Fusarium pseudoygamai F5.76 in which PAH-vacuoles were observed but PAH removal was below 20%. Thus, our study paves the way for the exploitation of fungi in remediation strategies to mitigate the effect of PAH in coastal marine sediments.
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Affiliation(s)
- Joyce Álvarez-Barragán
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM UMR CNRS 5254, Bat. IBEAS, Pau, France
| | - Cristiana Cravo-Laureau
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM UMR CNRS 5254, Bat. IBEAS, Pau, France
| | - Lukas Y Wick
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Microbiology, Leipzig, 04318, Germany
| | - Robert Duran
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM UMR CNRS 5254, Bat. IBEAS, Pau, France.
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23
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Kour H, Kour S, Sharma Y, Singh S, Sharma I, Kour D, Yadav AN. Bioprospecting of Industrially Important Mushrooms. Fungal Biol 2021. [DOI: 10.1007/978-3-030-85603-8_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Raman J, Jang KY, Oh YL, Oh M, Im JH, Lakshmanan H, Sabaratnam V. Cultivation and Nutritional Value of Prominent Pleurotus spp.: An Overview. MYCOBIOLOGY 2020; 49:1-14. [PMID: 33536808 PMCID: PMC7832515 DOI: 10.1080/12298093.2020.1835142] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 05/27/2023]
Abstract
Pleurotus species are commercially essential mushrooms and widely cultivated throughout the world. The production of Pleurotus mushrooms alone accounts for around 25% of that total cultivated mushrooms globally. In America and Europe, Pleurotus species are considered specialty mushrooms, whereas, in Korea, their cultivation is economically profitable, and it is one of the highly consumed species. Pleurotus species are predominantly found in tropical forests and often grow on fallen branches, dead and decaying tree stumps, and wet logs. Biographical studies have shown that the Pleurotus genus is among the more conspicuous fungi that induce wood decay in terrestrial ecosystems worldwide due to its formidable lignin-modifying enzymes, including laccase and versatile peroxidases. Pleurotus species can be grown easily due to their fast colonization nature on diversified agro-substrates and their biological efficiency 100%. Pleurotus mushrooms are rich in proteins, dietary fiber, essential amino acids, carbohydrates, water-soluble vitamins, and minerals. These mushrooms are abundant in functional bioactive molecules, though to influence health. Pleurotus mushrooms are finding unique applications as flavoring, aroma, and excellent preservation quality. Apart from its unique applications, Pleurotus mushrooms have a unique status delicacy with high nutritional and medicinal values. The present review provides an insight into the cultivation of Pleurotus spp. using different agro-waste as growth substances paying attention to their effects on the growth and chemical composition.
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Affiliation(s)
- Jegadeesh Raman
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Kab-Yeul Jang
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Youn-Lee Oh
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Minji Oh
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Ji-Hoon Im
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
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25
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Sui X, Liu J, Xin Y, Qu M, Qiu Y, He T, Luo H, Wang W, Qiu Z. Highly regioselective biotransformation of ginsenoside Rg1 to 25-OH derivatives of 20(S/R)-Rh1 by Cordyceps Sinensis. Bioorg Med Chem Lett 2020; 30:127504. [PMID: 32827631 DOI: 10.1016/j.bmcl.2020.127504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 08/08/2020] [Accepted: 08/17/2020] [Indexed: 11/20/2022]
Abstract
25-OH ginsenosides are potent and rare prodrugs in natural sources. However current strategies for such modification always end up in undesirable side products and unsatisfied yield that hinders them from further applications. Herein, ginsenoside Rg1 was thoroughly converted into 20(S/R)-Rh1 and 25-OH-20(S/R)-Rh1 by Cordyceps Sinensis in an optimum medium. The chemical correctness of either 25-OH-20(S/R)-Rh1 epimers was validated by LC-IT-TOF-MSn and 13C NMR spectrometry. The biocatalytic pathway was established as Rg1 → 20(S/R)-Rh1 → 25-OH-20(S/R)-Rh1. The molar bioconversion rate for total 25-OH-20(S/R)-Rh1 was calculated to be 82.5%, of which S-configuration accounted for 43.2% while R-configuration 39.3%. These two 25-OH derivatives are direct hydration products from 20(S/R)-Rh1 without other side metabolites, suggesting this is a highly regioselective process. In conclusion, this biocatalytic system could be harnessed to facilitate the preparation of diversified 25-OH ginsenosides with high yields of the target compound and simple chemical background in the reaction mixture.
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Affiliation(s)
- Xin Sui
- Changchun University of Chinese Medicine, Changchun 130117, China; The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun 130117, China
| | - Jishuang Liu
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Yu Xin
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Mo Qu
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Ye Qiu
- Changchun University of Chinese Medicine, Changchun 130117, China; National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun 130117, China
| | - Tianzhu He
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Haoming Luo
- Changchun University of Chinese Medicine, Changchun 130117, China
| | - Weinan Wang
- Changchun University of Chinese Medicine, Changchun 130117, China.
| | - Zhidong Qiu
- Changchun University of Chinese Medicine, Changchun 130117, China
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26
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Wu H, Nakazawa T, Takenaka A, Kodera R, Morimoto R, Sakamoto M, Honda Y. Transcriptional shifts in delignification-defective mutants of the white-rot fungus Pleurotus ostreatus. FEBS Lett 2020; 594:3182-3199. [PMID: 32697375 DOI: 10.1002/1873-3468.13890] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 12/17/2022]
Abstract
White-rot fungi efficiently degrade lignin and, thus, play a pivotal role in the global carbon cycle. However, the mechanisms of lignin degradation are largely unknown. Recently, mutations in four genes, namely wtr1, chd1, pex1, and gat1, were shown to abrogate the wood lignin-degrading ability of Pleurotus ostreatus. In this study, we conducted a comparative transcriptome analysis to identify genes that are differentially expressed in ligninolysis-deficient mutant strains. Putative ligninolytic genes that are highly expressed in parental strains are significantly downregulated in the mutant strains. On the contrary, many putative cellulolytic and xylanolytic genes are upregulated in the chd1-1, Δpex1, and Δgat1 strains. Identifying transcriptional alterations in mutant strains could provide new insights into the regulatory mechanisms of lignocellulolytic genes in P. ostreatus.
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Affiliation(s)
- Hongli Wu
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | | | - Atsuki Takenaka
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Rina Kodera
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Ryota Morimoto
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | | | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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Romanholo Ferreira LF, Torres NH, de Armas RD, Fernandes CD, Vilar DDS, Aguiar MM, Pompeu GB, Monteiro RTR, Iqbal HM, Bilal M, Bharagava RN. Fungal lignin-modifying enzymes induced by vinasse mycodegradation and its relationship with oxidative stress. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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28
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Cruz YWG, Vieira YA, Vilar DS, Torres NH, Aguiar MM, Cavalcanti EB, Américo-Pinheiro JHP, Soriano RN, Bharagava RN, Lima ÁS, Ferreira LFR. Pulp wash: a new source for production of ligninolytic enzymes and biomass and its toxicological evaluation after biological treatment. ENVIRONMENTAL TECHNOLOGY 2020; 41:1837-1847. [PMID: 30457937 DOI: 10.1080/09593330.2018.1551428] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Pulp wash was used as substrate for the activity of ligninolytic enzymes of the fungus Pleurotus sajor-caju. Activity of laccase (Lac) and manganese peroxidase (MnP) as well as fungal biomass occurred under four conditions: different pulp wash concentrations, pH variation at the optimal pulp wash concentration, different glucose concentrations, and different concentrations of ammonium nitrate. The best enzyme activity and biomass production were obtained with in natura pulp wash and pH corrected to 5.0 (4884 IU/L Lac; 82 IU/L MnP; 25 g/100 mL biomass). However, the addition of glucose and ammonium nitrate to the pulp wash was not necessary for increasing the enzyme activity and biomass production. Efficient removal of pulp wash chemical oxygen demand (99.66%) and biochemical oxygen demand (83.27%) occurred after the mycoremediation with P. sajor-caju in the optimized conditions. Lactuca sativa L. seeds germination bioassay showed a four-fold reduction in the residue toxicity (EC50 28.72%) after the treatment with the fungus. Our findings are consistent with the notion that pulp wash is an excellent substrate for inducing the activity of ligninolytic enzymes and producing fungal biomass, and that the biological treatment is efficient to reduce effluent toxicity.
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Affiliation(s)
- Ytallo W G Cruz
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | - Yago A Vieira
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | - Débora S Vilar
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | | | - Mario M Aguiar
- Division of Molecular Biology, Innsbruck Medical University, Innsbruck, Austria
| | - Eliane B Cavalcanti
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
| | | | - Renato N Soriano
- Division of Physiology and Biophysics, Department of Basic Life Sciences, Federal University of Juiz de Fora, Governador Valadares, Brazil
| | - Ram N Bharagava
- Laboratory for Bioremediation and Metagenomics Research (LBMR), Department of Microbiology (DM), Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India
| | - Álvaro S Lima
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
| | - Luiz F R Ferreira
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
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29
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Lopes RDO, Pereira PM, Pereira ARB, Fernandes KV, Carvalho JF, França ADSD, Valente RH, da Silva M, Ferreira-Leitão VS. Atrazine, desethylatrazine (DEA) and desisopropylatrazine (DIA) degradation by Pleurotus ostreatus INCQS 40310. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1754805] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Raquel de Oliveira Lopes
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
| | - Patrícia Maia Pereira
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
- Department of Biochemistry, Federal University of Rio de Janeiro, Institute of Chemistry, Rio de Janeiro, Brazil
| | - Aline Ramalho Brandão Pereira
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
- Department of Biochemistry, Federal University of Rio de Janeiro, Institute of Chemistry, Rio de Janeiro, Brazil
| | - Keysson Vieira Fernandes
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
| | - Julia Finamor Carvalho
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
- Department of Biochemistry, Federal University of Rio de Janeiro, Institute of Chemistry, Rio de Janeiro, Brazil
| | - Alexandre da Silva de França
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
| | - Richard Hemmi Valente
- Department of Biochemistry, Federal University of Rio de Janeiro, Institute of Chemistry, Rio de Janeiro, Brazil
- Laboratory of Toxinology, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Manuela da Silva
- Vice-Presidency of Research and Biological Collections, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
| | - Viridiana S. Ferreira-Leitão
- Biocatalysis Laboratory, National Institute of Technology (INT), Ministry of Science, Technology, Innovation and Communication (MCTIC), Rio de Janeiro, Brazil
- Department of Biochemistry, Federal University of Rio de Janeiro, Institute of Chemistry, Rio de Janeiro, Brazil
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30
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Aragão MS, Menezes DB, Ramos LC, Oliveira HS, Bharagava RN, Romanholo Ferreira LF, Teixeira JA, Ruzene DS, Silva DP. Mycoremediation of vinasse by surface response methodology and preliminary studies in air-lift bioreactors. CHEMOSPHERE 2020; 244:125432. [PMID: 31812763 DOI: 10.1016/j.chemosphere.2019.125432] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/11/2019] [Accepted: 11/20/2019] [Indexed: 06/10/2023]
Abstract
This work evaluated the degradation of sugarcane vinasse with the production of biomass by Pleurotus sajor-caju CCB020, considering the combination of temperature and pH effects, using surface response methodology (RSM). A 22 complete central factorial composite experiment was used to analyze the results. The optimum temperature and pH values were respectively 27 °C and 5.6 for maximum decolorization yield and 20 °C and 6.8 for maximum biomass production. In parallel, scale-up experiments under conditions of 30 °C and initial pH 5.0 were evaluated in two different air-lift bioreactors of 7.0 L. Under these conditions, reductions of 53% and 58% in chemical oxygen demand (COD) and 71% and 58% in biological oxygen demand (BOD) were obtained respectively with the concentric tube type air-lift bioreactor with an increased degassing zone and without an increased degassing zone. Under these conditions, this study concluded that the systematic combination of P. sajor-caju and vinasse can be applied in the biodegradation process of refractory compounds contained in vinasse, concomitant to obtaining biomass and laccase and manganese peroxidase enzymes. Due to the good performance of the air-lift bioreactors, they can be used in scale studies in future industrial vinasse applications, besides it is possible to emphasize that different configurations in the bioreactor can affect the efficiency of the process.
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Affiliation(s)
- Moniky S Aragão
- Institute of Technology and Research, Murilo Dantas Avenue 300, Campus Farolândia, 49032-490, Aracaju, SE, Brazil
| | - Diego B Menezes
- Institute of Technology and Research, Murilo Dantas Avenue 300, Campus Farolândia, 49032-490, Aracaju, SE, Brazil
| | - Larissa C Ramos
- Northeastern Biotechnology Network - RENORBIO, Federal University of Sergipe, 49100-000, São Cristóvão, Sergipe, Brazil; Center for Exact Sciences and Technology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil
| | - Helon S Oliveira
- Institute of Technology and Research, Murilo Dantas Avenue 300, Campus Farolândia, 49032-490, Aracaju, SE, Brazil
| | - Ram Naresh Bharagava
- Laboratory for Bioremediation and Metagenomics Research (LBMR), Department of Microbiology (DM), Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow, 226 025, Uttar Pradesh, India
| | - Luiz Fernando Romanholo Ferreira
- Institute of Technology and Research, Murilo Dantas Avenue 300, Campus Farolândia, 49032-490, Aracaju, SE, Brazil; Graduate Program in Process Engineering, Tiradentes University, Murilo Dantas Avenue, 300, Farolândia, 49032-490, Aracaju, Sergipe, Brazil.
| | - José A Teixeira
- Centre of Biological Engineering, University of Minho, Campus Gualtar, 4710-057, Braga, Portugal
| | - Denise S Ruzene
- Northeastern Biotechnology Network - RENORBIO, Federal University of Sergipe, 49100-000, São Cristóvão, Sergipe, Brazil; Center for Exact Sciences and Technology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil
| | - Daniel P Silva
- Northeastern Biotechnology Network - RENORBIO, Federal University of Sergipe, 49100-000, São Cristóvão, Sergipe, Brazil; Center for Exact Sciences and Technology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil
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31
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Gopalakrishnan RM, Manavalan T, Ramesh J, Thangavelu KP, Heese K. Improvement of Saccharification and Delignification Efficiency of Trichoderma reesei Rut-C30 by Genetic Bioengineering. Microorganisms 2020; 8:microorganisms8020159. [PMID: 31979278 PMCID: PMC7074786 DOI: 10.3390/microorganisms8020159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 11/16/2022] Open
Abstract
Trichoderma reesei produces various saccharification enzymes required for biomass degradation. However, the lack of an effective lignin-degrading enzyme system reduces the species’ efficiency in producing fermentable sugars and increases the pre-treatment costs for biofuel production. In this study, we heterologously expressed the Ganoderma lucidum RMK1 versatile peroxidase gene (vp1) in the Rut-C30 strain of T. reesei. The expression of purified 6×His-tag–containing recombinant G. lucidum-derived protein (rVP1) was confirmed through western blot, which exhibited a single band with a relative molecular weight of 39 kDa. In saccharification and delignification studies using rice straw, the transformant (tVP7, T. reesei Rut-C30 expressing G. lucidum-derived rVP1) showed significant improvement in the yield of total reducing sugar and delignification, compared with that of the parent T. reesei Rut-C30 strain. Scanning electron microscopy (SEM) of tVP7-treated paddy straw showed extensive degradation of several layers of its surface compared with the parent strain due to the presence of G. lucidum-derived rVP1. Our results suggest that the expression of ligninolytic enzymes in cellulase hyperproducing systems helps to integrate the pre-treatment and saccharification steps that may ultimately reduce the costs of bioethanol production.
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Affiliation(s)
- Raja Mohan Gopalakrishnan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, Tamil Nadu 600 025, India; (R.M.G.); (T.M.)
| | - Tamilvendan Manavalan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, Tamil Nadu 600 025, India; (R.M.G.); (T.M.)
| | - Janani Ramesh
- Department of Medical Biochemistry, Dr ALM Postgraduate Institute of Biomedical Sciences, University of Madras, Chennai, Tamil Nadu 600 113, India;
| | - Kalaichelvan Puthupalayam Thangavelu
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, Tamil Nadu 600 025, India; (R.M.G.); (T.M.)
- Correspondence: (K.P.T.); (K.H.)
| | - Klaus Heese
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
- Correspondence: (K.P.T.); (K.H.)
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32
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Wang W, Liu J, Xin Y, He T, Qiu Y, Qu M, Song Y, Qiu Z. Highly regioselective bioconversion of ginsenoside Re into 20(S/R)-Rf2 by an optimized culture of Cordyceps sinensis. NEW J CHEM 2020. [DOI: 10.1039/d0nj01828g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Highly regioselective hydration of the C24–C25 double bond is discovered during the bioconversion of ginsenoside Re by Cordyceps sinensis.
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Affiliation(s)
- Weinan Wang
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Jishuang Liu
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Yu Xin
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Tianzhu He
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Ye Qiu
- National Engineering Laboratory for Druggable Gene and Protein Screening
- Northeast Normal University
- Changchun 130117
- China
| | - Mo Qu
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Yan Song
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Zhidong Qiu
- Changchun University of Chinese Medicine
- Changchun 130117
- China
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33
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Postemsky PD, Bidegain MA, Lluberas G, Lopretti MI, Bonifacino S, Inés Landache M, Zygadlo JA, Fernández-Lahore M, Omarini AB. Biorefining via solid-state fermentation of rice and sunflower by-products employing novel monosporic strains from Pleurotus sapidus. BIORESOURCE TECHNOLOGY 2019; 289:121692. [PMID: 31265963 DOI: 10.1016/j.biortech.2019.121692] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 06/09/2023]
Abstract
Pleurotus sapidus monokaryotic strains (Mk) were screened as a novel source of mycelia to valorize rice straw (RS), rice husks (RH) and sunflower seed hulls (SSH) into value-added products through solid-state fermentation (SSF). P. sapidus Dk3174 basidiospores were cultured in the presence of Remazol Brillant Blue R for strain selection, revealing the ligninolytic ability of emerging colonies. Further screening demonstrated the intraspecific variability in dye degradation and enzyme production of 63 strains. Growth rate, biomass and enzyme production in plates containing RS, RH or SSH pointed at MkP6 as a suitable strain for pilot-scale SSF. MkP6 presented a similar laccase profile as the parental Dk3174, being greater in pasteurized substrates (300-1200 U/Kg) than in sterilized substrates (30-250 U/Kg). Peroxidase represented 25% of the total ligninolytic activity measured. The SSH fermented biomass with MkP6 obtained good yields of nanocellulose (67%) and the saccharide release for ethanol production increased by 3-4 times.
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Affiliation(s)
- Pablo D Postemsky
- Laboratory of Biotechnology of Edible and Medicinal Mushrooms, Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS-UNS/CONICET), Camino de La Carrindaga Km7, 8000 Bahía Blanca, Buenos Aires, Argentina
| | - Maximiliano A Bidegain
- Laboratory of Biotechnology of Edible and Medicinal Mushrooms, Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS-UNS/CONICET), Camino de La Carrindaga Km7, 8000 Bahía Blanca, Buenos Aires, Argentina
| | - Gabriela Lluberas
- Universidad de la República (UdelaR), Facultad de Ciencias, CIN, Mataojos s/n, Malvin Norte, Montevideo, 11200 Montevideo, Uruguay
| | - Mary I Lopretti
- Universidad de la República (UdelaR), Facultad de Ciencias, CIN, Mataojos s/n, Malvin Norte, Montevideo, 11200 Montevideo, Uruguay
| | - Silvana Bonifacino
- Universidad de la República (UdelaR), Facultad de Ciencias, CIN, Mataojos s/n, Malvin Norte, Montevideo, 11200 Montevideo, Uruguay
| | - María Inés Landache
- Downstream Bioprocessing Laboratory, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany
| | - Julio A Zygadlo
- Instituto Multidisciplinario de Biología Vegetal, IMBIV-UNC/CONICET, Av. Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina
| | - Marcelo Fernández-Lahore
- Downstream Bioprocessing Laboratory, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany
| | - Alejandra B Omarini
- Instituto de Ciencias de la Tierra y Ambientales de La Pampa, INCITAP-UNLPam/CONICET, Mendoza 109, L6300DUG Santa Rosa, La Pampa, Argentina.
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Pleurotus spp. Cultivation on Different Agri-Food By-Products: Example of Biotechnological Application. SUSTAINABILITY 2019. [DOI: 10.3390/su11185049] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Agri-food industry generally produces huge volumes of wastes all over the world, and their disposal is a threat to the environment and public health. The chemical composition of most of these wastes make them be defined as lignocellulosic materials, so they could be a suitable substrate for solid-state fermentation process operated by mushrooms. White-rot fungi are well known for their degradation ability of lignocellulosic material, and many scientific works reported the use of different substrates for their production. Biotechnological treatments of agri-food wastes by mushrooms could be considered an eco-friendly solution to reuse and valorize them, besides to reduce their environmental impact. In this way, wastes would be transformed into new resources to produce added-value food products, besides representing an economic return for the same industries. The aim of this review is to provide an overview of the recent literature concerning the use of different agri-food residues as growth substrates for Pleurotus spp. cultivation, with attention to their effects on the growth and chemical composition of the cultivated mushrooms.
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Liu Z, Li JX, Wang CZ, Zhang DL, Wen X, Ruan CC, Li Y, Yuan CS. Microbial Conversion of Protopanaxadiol-Type Ginsenosides by the Edible and Medicinal Mushroom Schizophyllum commune: A Green Biotransformation Strategy. ACS OMEGA 2019; 4:13114-13123. [PMID: 31460439 PMCID: PMC6705088 DOI: 10.1021/acsomega.9b01001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/18/2019] [Indexed: 05/17/2023]
Abstract
Previous studies have shown that many kinds of microorganisms, including bacteria, yeasts, and filamentous fungi, can convert parent ginsenosides into minor ginsenosides. However, most microorganisms used for ginsenoside transformations may not be safe for food consumption and drug development. In this study, 24 edible and medicinal mushrooms were screened by high-performance liquid chromatography analyses for their ability to microbiologically transform protopanaxadiol (PPD)-type ginsenosides. We observed that the degradation of ginsenosides by Schizophyllum commune was inhibited by high concentrations of sugar in the culture medium. However, the inhibition was avoided by maintaining sugar concentration below 15 g L-1. S. commune showed a strong ability to convert PPD-type ginsenosides (Rb1, Rc, Rb2, and Rd) into minor ginsenosides (F2, C-O, C-Y, C-Mc1, C-Mc, and C-K). The production and bioconversion rates of minor ginsenosides were significantly higher than those previously reported by food microorganisms. The fermentation process is efficient, nontoxic, eco-friendly, and economical, and the required biotransformation systems are readily available. This is the first report about the biotransformation of major ginsenosides into minor ginsenosides through fermentation by edible and medicinal mushrooms. Our results provide a green biodegradation strategy in transformation of ginsenosides using edible and medicinal mushrooms.
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Affiliation(s)
- Zhi Liu
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
- Tang
Center for Herbal Medicine Research, and The Pritzker School of Medicine, University of Chicago, Chicago, IIllinois 60637, United States
- E-mail: (Z.L.)
| | - Jia-Xin Li
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
| | - Chong-Zhi Wang
- Tang
Center for Herbal Medicine Research, and The Pritzker School of Medicine, University of Chicago, Chicago, IIllinois 60637, United States
| | - Dan-Li Zhang
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
| | - Xin Wen
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
| | - Chang-Chun Ruan
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
| | - Yu Li
- College
of Chinese Medicinal Materials, Engineering Research Center of
Chinese Ministry of Education for Edible and Medicinal Fungi, and Institute of Agricultural
Modernization, Jilin Agricultural University, Changchun 130118, China
- E-mail: . Tel: +86
431 8451 0949. Fax: +86 431 8451 0409 (Y.L.)
| | - Chun-Su Yuan
- Tang
Center for Herbal Medicine Research, and The Pritzker School of Medicine, University of Chicago, Chicago, IIllinois 60637, United States
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O'Brien BJ, Milligan E, Carver J, Roy ED. Integrating anaerobic co-digestion of dairy manure and food waste with cultivation of edible mushrooms for nutrient recovery. BIORESOURCE TECHNOLOGY 2019; 285:121312. [PMID: 30978584 DOI: 10.1016/j.biortech.2019.121312] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/31/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
State-level policies in the New England region of the United States require diversion of organic materials away from landfills. One management option for food waste is anaerobic co-digestion with dairy manure. In addition to biogas, anaerobic digestion produces separated solid and liquid digestates. Solid digestates in the region are typically recycled as animal bedding before returning to the digester and liquids are used to fertilize local soils. Repeated land application of nutrients can contribute to eutrophication risk over time and alternative models are needed to convert digestates into valuable export products. We tested solid digestates derived from dairy manure and food waste as substrate ingredients in the cultivation of Pleurotus ostreatus. We show these materials can be used to offset non-local substrate ingredients while achieving mushroom yields comparable to commercial recipes. This strategy could help divert nutrients away from land adjacent to digesters and into safe, protein-rich food, while producing useful spent mushroom substrate.
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Affiliation(s)
- Brendan J O'Brien
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405, USA
| | - Eric Milligan
- New Hampshire Mushroom Company, Tamworth, NH 03886, USA
| | - Jon Carver
- North Spore Mushroom Company, Westbrook, ME 04092, USA
| | - Eric D Roy
- Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405, USA; Gund Institute for Environment, University of Vermont, Burlington, VT 05405, USA.
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Manipulating the Expression of Small Secreted Protein 1 (Ssp1) Alters Patterns of Development and Metabolism in the White-Rot Fungus Pleurotus ostreatus. Appl Environ Microbiol 2019; 85:AEM.00761-19. [PMID: 31101610 DOI: 10.1128/aem.00761-19] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/09/2019] [Indexed: 01/30/2023] Open
Abstract
The function of small secreted proteins (SSPs) in saprotrophic fungi is, for the most part, unknown. The white-rot mushroom Pleurotus ostreatus produces considerable amounts of SSPs at the onset of secondary metabolism, during colony development, and in response to chemical compounds such as 5-hydroxymethylfurfural and aryl alcohols. Genetic manipulation of Ssp1, by knockdown (KDssp1) or overexpression (OEssp1), indicated that they are, in fact, involved in the regulation of the ligninolytic system. To elucidate their potential involvement in fungal development, quantitative secretome analysis was performed during the trophophase and the idiophase and at a transition point between the two growth phases. The mutations conferred a time shift in the secretion and expression patterns: OEssp1 preceded the entrance to idiophase and secondary metabolism, while KDssp1 was delayed. This was also correlated with expression patterns of selected genes. The KDssp1 colony aged at a slower pace, accompanied by a slower decline in biomass over time. In contrast, the OEssp1 strain exhibited severe lysis and aging of the colony at the same time point. These phenomena were accompanied by variations in yellow pigment production, characteristic of entrance of the wild type into idiophase. The pigment was produced earlier and in a larger amount in the OEssp1 strain and was absent from the KDssp1 strain. Furthermore, the dikaryon harboring OEssp1 exhibited a delay in the initiation of fruiting body formation as well as earlier aging. We propose that Ssp1 might function as a part of the fungal communication network and regulate the pattern of fungal development and metabolism in P. ostreatus IMPORTANCE Small secreted proteins (SSPs) are common in fungal saprotrophs, but their roles remain elusive. As such, they comprise part of a gene pool which may be involved in governing fungal lifestyles not limited to symbiosis and pathogenicity, in which they are commonly referred to as "effectors." We propose that Ssp1 in the white-rot fungus Pleurotus ostreatus regulates the transition from primary to secondary metabolism, development, aging, and fruiting body initiation. Our observations uncover a novel regulatory role of effector-like SSPs in a saprotroph, suggesting that they may act in fungal communication as well as in response to environmental cues. The presence of Ssp1 homologues in other fungal species supports a common potential role in environmental sensing and fungal development.
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Deveci E, Çayan F, Tel-Çayan G, Duru ME. Structural characterization and determination of biological activities for different polysaccharides extracted from tree mushroom species. J Food Biochem 2019; 43:e12965. [PMID: 31489667 DOI: 10.1111/jfbc.12965] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 01/20/2023]
Abstract
Chemical composition and structural characterization of polysaccharides of Fomes fomentarius (FF), Fuscoporia torulosa, Ganoderma adspersum, Ganoderma applanatum (GAP), Ganoderma lucidum, Phellinus igniarius, Pleurotus ostreatus (PO), and Porodaedalea pini (PP) tree mushrooms with antioxidant and anticholinesterase activities were determined in this research. Total carbohydrate contents of the polysaccharides were ranged between 65.06 ± 6.76 and 88.27 ± 5.15 µg/mg and total protein contents were ranged between 3.18 ± 0.72 and 6.56 ± 1.25 µg/mg. Galactose, glucose, and mannose were identified as major monosaccharides in all polysaccharides using gas chromatography-mass spectrometry. FT-IR analysis showed the characteristic peaks of the polysaccharides and high performance liquid chromatography-diode array detection was used to determine the molecular weight of the polysaccharides. In β-carotene-linoleic acid assay FF (IC50 : 2.55 ± 0.40 µg/ml) displayed the highest antioxidant activity, whereas GAP indicated the highest antioxidant activity in cupric reducing antioxidant capacity (A0.50 :59.90 ± 0.53 μg/ml), ABTS•+ (IC50 : 16.62 ± 0.31 μg/ml), and DPPH• (IC50 : 45.58 ± 0.21 μg/ml) assays. In cholinesterase inhibitory activity test, PO (56.31±0.0.74%) showed significant inhibitory activity against butyrylcholinesterase enzyme. PRACTICAL APPLICATIONS: Polysaccharides from mushrooms are the major class of bioactive compounds with various biological activities. Several studies were performed on the biological activity of the polysaccharide extracts from different mushrooms. However, to our knowledge, this is the first report on the chemical composition, structural characterization, antioxidant, and anticholinesterase activities of extracted polysaccharides from studied mushrooms in detail. This investigation shows that polysaccharide extracts obtained from tree mushrooms show a significant bioactivity and these polysaccharides might be used as bioactive natural sources in the pharmaceutical, food, and cosmetic industries.
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Affiliation(s)
- Ebru Deveci
- Department of Chemistry, Faculty of Science, Muğla Sıtkı Kocman University, Muğla, Turkey
| | - Fatih Çayan
- Department of Chemistry and Chemical Processing Technologies, Muğla Vocational School, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Gülsen Tel-Çayan
- Department of Chemistry and Chemical Processing Technologies, Muğla Vocational School, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Mehmet Emin Duru
- Department of Chemistry, Faculty of Science, Muğla Sıtkı Kocman University, Muğla, Turkey
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Chefetz B, Marom R, Salton O, Oliferovsky M, Mordehay V, Ben-Ari J, Hadar Y. Transformation of lamotrigine by white-rot fungus Pleurotus ostreatus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 250:546-553. [PMID: 31026702 DOI: 10.1016/j.envpol.2019.04.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
One of the most persistent pharmaceutical compounds commonly found in treated wastewater is lamotrigine (LTG). It has also been detected in soils and crops irrigated with treated wastewater. Here we focused on the ability of the white-rot edible mushroom Pleurotus ostreatus to remove and transform LTG in liquid cultures. At concentrations of environmental relevance (1 and 10 μg L-1) LTG was almost completely removed from the culture medium within 20 days. To elucidate the mechanism of LTG removal and transformation, we applied a physiological-based approach using inhibitors and a competing agent. These experiments were conducted at a higher concentration for metabolites detection. Based on identification of sulfur-containing metabolites and LTG N2-oxide and the effect of specific inhibitors, cytochrome P450 oxidation is suggested as one of the reaction mechanisms leading to LTG transformation. The variety and number of transformation products (i.e., conjugates) found in the current study were larger than reported in mammals. Moreover, known conjugates with glucuronide, glutathione, or cysteine/glycine, were not found in our system. Since the majority of the identified transformation products were conjugates of LTG, this study highlights the persistence of LTG as an organic pollutant in ecosystems exposed to wastewater.
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Affiliation(s)
- Benny Chefetz
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel.
| | - Rotem Marom
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Orit Salton
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Mariana Oliferovsky
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Vered Mordehay
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Julius Ben-Ari
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Yitzhak Hadar
- Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 7610001, Israel.
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Li L, Liu B, Yang J, Zhang Q, He C, Jia R. Catalytic properties of a short manganese peroxidase from Irpex lacteus F17 and the role of Glu166 in the Mn 2+-independent activity. Int J Biol Macromol 2019; 136:859-869. [PMID: 31226373 DOI: 10.1016/j.ijbiomac.2019.06.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/05/2019] [Accepted: 06/11/2019] [Indexed: 01/30/2023]
Abstract
Il-MnP1 (GenBank: AGO86670.2) has been confirmed by sequence analysis as a short manganese peroxidase (MnP) from Irpex lacteus F17 (CCTCC AF 2014020). To investigate the catalytic properties, the oxidation of typical aromatic substrates and the pathways of guaiacol oxidation by Il-MnP1, both in the presence and absence of Mn2+ at either pH 4.0 or pH 7.4, were analyzed. Results showed that Il-MnP1 exhibited higher oxidative activity in the presence of Mn2+ than in the absence of Mn2+ toward the majority of the selected substrates at pH 4.0. Additionally, the similar product compositions suggested that the oxidation of guaiacol mainly belongs to a series of polymeric reactions of radicals initiated by Il-MnP1, whether they were in the presence and absence of Mn2+ at either pH 4.0 or 7.4. Furthermore, two variants (E166G, E166Q) were found using site-directed mutagenesis, to improve the Mn2+-independent oxidative activity significantly. The catalytic efficiency (Kcat/Km) of E166G and E166Q in 2, 6-dimethoxyphenol oxidation was higher than Il-MnP1 by 170 and 34 times, respectively. The study revealed certain differences in catalytic properties between Mn2+ dependent and independent oxidation by Il-MnP1. More importantly, a residue (E166) was related to the Mn2+-independent activity of a short MnP.
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Affiliation(s)
- Liuqing Li
- School of Life Science, Anhui University, Hefei, Anhui Province, China; Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei,Anhui Province, China
| | - Binjie Liu
- School of Life Science, Anhui University, Hefei, Anhui Province, China; Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei,Anhui Province, China
| | - Jun Yang
- School of Life Science, Anhui University, Hefei, Anhui Province, China; Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei,Anhui Province, China
| | - Qiong Zhang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui Province, China
| | - Chao He
- School of Life Science, Anhui University, Hefei, Anhui Province, China; Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei,Anhui Province, China
| | - Rong Jia
- School of Life Science, Anhui University, Hefei, Anhui Province, China; Anhui Key Laboratory of Modern Biomanufacturing, Anhui University, Hefei,Anhui Province, China.
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41
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Li Y, Liu J, Wang G, Yang M, Yang X, Li T, Chen G. De novo transcriptome analysis of Pleurotus djamor to identify genes encoding CAZymes related to the decomposition of corn stalk lignocellulose. J Biosci Bioeng 2019; 128:529-536. [PMID: 31147217 DOI: 10.1016/j.jbiosc.2019.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 03/06/2019] [Accepted: 04/15/2019] [Indexed: 12/11/2022]
Abstract
CAZymes play a very important role in the biotransformation of corn stalk biomass, which is an important resource for sustainable development. Pleurotus djamor can produce CAZymes related to the decomposition of corn stalk lignocellulose biomass in sole corn stalk substrate; however, little is known about their encoding genes. In order to identify CAZymes encoding genes, RNA high-throughput sequencing of P. djamor was performed in this study. The results showed that a core set of 70 upregulated genes encoding putative CAZymes were revealed. They encode 19 kinds of CAZymes in total, of which there are 4 EGLs, 8 CBHs, 5 BGLs, and 12 LPMOs related to cellulose degradation, 8 XYNs, 1 XYL, 2 AGUs, 3 ABFs, 2 AGLs, and 2 AXEs related to hemicellulose degradation, and 5 LACCs, 2 MnPs, 5 VPs, 3 CDHs, 1 AAO, 1 GOX, 1 AOX, 2 GAOXs, and 3 GLOXs related to lignin degradation. This variety suggests that CAZymes may play a very important role in decomposing the lignocellulose biomass of corn stalk. This is the first study to report the de novo transcriptome sequencing of P. djamor, which will produce a dataset of genes encoding CAZymes, thereby laying the foundation to elucidate the degradation mechanism of corn stalk biomass and boost the biotransformation of corn stalk biomass resources.
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Affiliation(s)
- Yanli Li
- Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Science, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China; Innovation Platform of Jilin Province for Straw Comprehensive Utilization Technology, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China; Engineering Research Center of the Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China.
| | - Jiahao Liu
- Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Science, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China; Innovation Platform of Jilin Province for Straw Comprehensive Utilization Technology, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
| | - Gang Wang
- Innovation Platform of Jilin Province for Straw Comprehensive Utilization Technology, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
| | - Meiying Yang
- Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Science, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
| | - Xue Yang
- Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, College of Life Science, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
| | - Tongbing Li
- Innovation Platform of Jilin Province for Straw Comprehensive Utilization Technology, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
| | - Guang Chen
- Innovation Platform of Jilin Province for Straw Comprehensive Utilization Technology, Jilin Agricultural University, Xincheng Street 2888, Nanguan District, Changchun 130118, Jilin, China
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Rashad FM, Kattan MHE, Fathy HM, El-Fattah DAA, Tohamy ME, Farahat AA. Recycling of agro-wastes for Ganoderma lucidum mushroom production and Ganoderma post mushroom substrate as soil amendment. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 88:147-159. [PMID: 31079627 DOI: 10.1016/j.wasman.2019.03.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 03/17/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
The in vitro growth of Ganoderma mycelia on six agro-wastes namely, broad bean stalks (BBS), cotton stalk (CS), maize straw (MS), rice straw (RS), sugarcane bagasse (SCB) and wheat straw (WS) supplemented with wheat bran (WB) or corn gluten (CG) was evaluated. Among the substrates used, CS appeared best followed by SCB and RS. WB showed best supplementation for mycelial growth. CO2 emission values exhibited accurate measurements to decide the suitability of such agro-waste for growth rather than visual observations. CS+RS+SCB+WB in combination proven its superiority for in vitro growth and active spawn development substrate. In mushroom house, this particular formula proved its superiority and was on par with recommended EG formula; it gave the highest yield (195.16 g Kg-1), biological efficiency (19.52%), protein (16.69%), polysaccharides (3.613%) and minerals (3433 mg/100 g). Spawn running period was the shortest in treatments inoculated with agro-waste-based spawns. With 40% biochar, days required to the complete mycelium colonization and fructification were 10.60 and 23.00, respectively. At 10% biochar, highest yields (238.40 g Kg-1), biological efficiencies (23.84%), protein (19.58%) and minerals (4092 mg/100 g) were obtained. The higher the biochar level, the higher the reduction in emitted CO2, the loss in C and the increase in N of Ganoderma post mushroom substrates (GPMSs). Under greenhouse conditions, almost all the tested GPMSs, at 0.125 or 0.25%, encouraged the reproduction of reniform nematodes and improved plant growth criteria.
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Affiliation(s)
- Ferial M Rashad
- Dept. of Microbiology, Faculty of Agriculture, Cairo Univ., Giza 12613, Egypt.
| | - M H El Kattan
- Central Laboratory for Agriculture Climate (CLAC), Agriculture Research Center (ARC), Giza 12411, Egypt
| | - Hayam M Fathy
- Dept. of Microbiology, Faculty of Agriculture, Cairo Univ., Giza 12613, Egypt
| | - Dalia A Abd El-Fattah
- Central Laboratory for Agriculture Climate (CLAC), Agriculture Research Center (ARC), Giza 12411, Egypt
| | - Mahmoud El Tohamy
- Central Laboratory for Agriculture Climate (CLAC), Agriculture Research Center (ARC), Giza 12411, Egypt
| | - A A Farahat
- Dept. of Zoology and Agricultural Nematology, Faculty of Agriculture, Cairo Univ., Giza 12613, Egypt
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Cuamatzi-Flores J, Esquivel-Naranjo E, Nava-Galicia S, López-Munguía A, Arroyo-Becerra A, Villalobos-López MA, Bibbins-Martínez M. Differential regulation of Pleurotus ostreatus dye peroxidases gene expression in response to dyes and potential application of recombinant Pleos-DyP1 in decolorization. PLoS One 2019; 14:e0209711. [PMID: 30608975 PMCID: PMC6319807 DOI: 10.1371/journal.pone.0209711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 12/09/2018] [Indexed: 11/19/2022] Open
Abstract
Dye-decolorizing peroxidase (DyP) from the white rot basidiomycete Pleurotus ostreatus is a heme peroxidase able to oxidize diverse substrates, including recalcitrant phenols and dyes. This study analyzed the effect of chemical dyes on P. ostreatus growth, DyP activity and the expression of four Pleos-dyp genes during the time-course of Pleurotus ostreatus cultures containing either Acetyl Yellow G (AYG), Remazol Brilliant Blue R (RBBR) or Acid Blue 129 (AB129) dyes. Additionally, Pleos DyP1 was heterologously expressed in the filamentous fungus Trichoderma atroviride in order to explore the potential of a secreted recombinant enzyme for decolorizing different dyes in cultures and plate assays. The addition of dyes had an induction effect on the enzymatic activity, with the fermentations undertaken using RBBR and AYG dyes presenting the highest total DyP activity. DyP gene expression profiles displayed up/down regulation during the culture of three Pleos-dyp genes (Pleos-dyp1, Pleos-dyp2 and Pleos-dyp4), while Pleos-dyp3 transcript was not detected under any of the culture conditions studied. A 14-fold relative induction level (log2) increase for Pleos-dyp2 and Pleos-dyp4 in AB129 and AYG, respectively, was also found. The presence of AB129 resulted in the highest Pleos-dyp1 gene induction and repression level, corresponding to 11.83 and -14.6-fold relative expression and repression levels, respectively. The lowest expression level of all genes was observed in RBBR, a response which is associated with the growth phase. The filamentous fungus Trichoderma atroviride was successfully transformed for the heterologous expression of Pleos-dyp1. The modified strains (TaDyP) were able to decolorize mono-azo, di-azo, anthraquinone and anthracenedione dyes with extracellular DyP1 activity found in the culture supernatant. After 96 h of culture, the recombinant TaDyP strains were able to degrade (decolorize) 77 and 34% of 0.05mM AB129 and 0.25mM AYG, respectively.
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Affiliation(s)
- J. Cuamatzi-Flores
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Ex-Hacienda de San Juan Molino, Tepetitla de Lardizábal, Tlaxcala, México
| | - E. Esquivel-Naranjo
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Avenida de las Ciencias S/N Juriquilla, Querétaro, México
| | - S. Nava-Galicia
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Ex-Hacienda de San Juan Molino, Tepetitla de Lardizábal, Tlaxcala, México
| | - A. López-Munguía
- Instituto de Biotecnología, Universidad Autónoma de México, Av. Universidad, Chamilpa, Cuernavaca, Morelos, México
| | - A. Arroyo-Becerra
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Ex-Hacienda de San Juan Molino, Tepetitla de Lardizábal, Tlaxcala, México
| | - M. A. Villalobos-López
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Ex-Hacienda de San Juan Molino, Tepetitla de Lardizábal, Tlaxcala, México
| | - M. Bibbins-Martínez
- Centro de Investigación en Biotecnología Aplicada-Instituto Politécnico Nacional, Ex-Hacienda de San Juan Molino, Tepetitla de Lardizábal, Tlaxcala, México
- * E-mail: ,
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Nakazawa T, Morimoto R, Wu H, Kodera R, Sakamoto M, Honda Y. Dominant effects of gat1 mutations on the ligninolytic activity of the white-rot fungus Pleurotus ostreatus. Fungal Biol 2018; 123:209-217. [PMID: 30798876 DOI: 10.1016/j.funbio.2018.12.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 12/08/2018] [Accepted: 12/20/2018] [Indexed: 12/20/2022]
Abstract
In nature, white-rot fungi efficiently degrade lignin present in wood biomass. Elucidation of molecular mechanisms underlying wood lignin biodegradation by white-rot fungi would contribute to the development of efficient and ecofriendly methods of producing valuable chemical products from wood biomass. Here, using forward genetics approach, we demonstrate that the mutant of a putative transcription factor gene, gat1-1, significantly decreases the ligninolytic activity of the white-rot fungus Pleurotus ostreatus, when grown on beech wood sawdust medium. We also show that this phenotype is dominant. In Schizophyllum commune, Gat1 was previously shown to be involved in fruiting body development. In this study, we reveal that the mutations in gat1 gene cause defects in fruiting body development in P. ostreatus. Unlike the previously reported recessive gene mutations that decrease the ligninolytic activity of P. ostreatus, the gat1-1 mutation and Δgat1 are dominant and would thus be useful for future studies on the functional role of the orthologs in other white-rot fungi.
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Affiliation(s)
- Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
| | - Ryota Morimoto
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Hongli Wu
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Rina Kodera
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Masahiro Sakamoto
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Wang Q, Qian Y, Ma Y, Zhu C. A Preliminary Study on the Newly Isolated High Laccase-producing Fungi: Screening, Strain Characteristics and Induction of Laccase Production. Open Life Sci 2018; 13:463-469. [PMID: 33817115 PMCID: PMC7874694 DOI: 10.1515/biol-2018-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 09/29/2018] [Indexed: 11/15/2022] Open
Abstract
A simple separation method was used in this study to directly separate laccase-producing fungi from withered plant materials. A laccase-producing filamentous fungus was isolated and purified. The strain was highly similar to the species in genus Trametes by ITS sequence analysis, and therefore named Trametes sp. MA-X01. The addition of cupric ions and aromatic compounds to the liquid medium could induce the laccase synthesis in Trametes sp. MA-X01. Copper-induced laccase activity increased in a dose-dependent manner. The highest laccase activity (2138.9 ± 340.2 U/L) was obtained by adding 2.5 mM Cu2+ to the culture medium, which was about 7 times higher than that of the control group. The induction degree of aromatic compounds was different. For the present study, the highest laccase activities were obtained by adding vanillic acid (1007.9±59.5 U/L) or vanillin (981.6±77.2 U/L) to the medium, which were 3.5 and 3.4 times higher than the laccase activity of the control group, respectively.
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Affiliation(s)
- Qian Wang
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100 P. R. China
| | - Yingying Qian
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100 P. R. China
| | - Yuhan Ma
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100 P. R. China
| | - Changwei Zhu
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100 P. R. China
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Mogilnaya O, Ronzhin N, Artemenko K, Bondar V. Nanodiamonds as an effective adsorbent for immobilization of extracellular peroxidases from luminous fungus Neonothopanus nambi to construct a phenol detection system. BIOCATAL BIOTRANSFOR 2018. [DOI: 10.1080/10242422.2018.1472586] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Olga Mogilnaya
- Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
| | - Nikita Ronzhin
- Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
| | - Karina Artemenko
- Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
| | - Vladimir Bondar
- Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
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Vilar DS, Carvalho GO, Pupo MM, Aguiar MM, Torres NH, Américo JH, Cavalcanti EB, Eguiluz KI, Salazar-Banda GR, Leite MS, Ferreira LF. Vinasse degradation using Pleurotus sajor-caju in a combined biological – Electrochemical oxidation treatment. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Feldman D, Kowbel DJ, Glass NL, Yarden O, Hadar Y. A role for small secreted proteins (SSPs) in a saprophytic fungal lifestyle: Ligninolytic enzyme regulation in Pleurotus ostreatus. Sci Rep 2017; 7:14553. [PMID: 29109463 PMCID: PMC5674062 DOI: 10.1038/s41598-017-15112-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/20/2017] [Indexed: 12/12/2022] Open
Abstract
Small secreted proteins (SSPs), along with lignocellulose degrading enzymes, are integral components of the secretome of Pleurotus ostreatus, a white rot fungus. In this study, we identified 3 genes (ssp1, 2 and 3) encoding proteins that are annotated as SSPs and that exhibited of ~4,500- fold expression, 24 hr following exposure to the toxic compound 5-hydroxymethylfurfural (HMF). Homologues to genes encoding these SSPs are present in the genomes of other basidiomycete fungi, however the role of SSPs is not yet understood. SSPs, aryl-alcohol oxidases (AAO) and the intracellular aryl-alcohol dehydrogenases (AAD) were also produced after exposure to other aryl-alcohols, known substrates and inducers of AAOs, and during idiophase (after the onset of secondary metabolism). A knockdown strain of ssp1 exhibited reduced production of AAO-and AAD-encoding genes after HMF exposure. Conversely, a strain overexpressing ssp1 exhibited elevated expression of genes encoding AAOs and ADD, resulting in a 3-fold increase in enzymatic activity of AAOs, as well as increased expression and protein abundance of versatile peroxidase 1, which directly degrades lignin. We propose that in addition to symbionts and pathogens, SSPs also have roles in saprophytes and function in P. ostreatus as components of the ligninolytic system.
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Affiliation(s)
- Daria Feldman
- The R.H. Smith Faculty Agriculture, Food and Environment, The Hebrew University of Jerusalem, Department of Plant Pathology and Microbiology, Rehovot, 76100, Israel
| | - David J Kowbel
- University of California at Berkeley UC Berkeley, Department of Plant and Microbial Biology, 111 Koshland Hall, Berkeley, California, 94720, USA
| | - N Louise Glass
- University of California at Berkeley UC Berkeley, Department of Plant and Microbial Biology, 111 Koshland Hall, Berkeley, California, 94720, USA
| | - Oded Yarden
- The R.H. Smith Faculty Agriculture, Food and Environment, The Hebrew University of Jerusalem, Department of Plant Pathology and Microbiology, Rehovot, 76100, Israel
| | - Yitzhak Hadar
- The R.H. Smith Faculty Agriculture, Food and Environment, The Hebrew University of Jerusalem, Department of Plant Pathology and Microbiology, Rehovot, 76100, Israel.
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Seppälä S, Wilken SE, Knop D, Solomon KV, O’Malley MA. The importance of sourcing enzymes from non-conventional fungi for metabolic engineering and biomass breakdown. Metab Eng 2017; 44:45-59. [DOI: 10.1016/j.ymben.2017.09.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/16/2017] [Accepted: 09/16/2017] [Indexed: 10/18/2022]
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