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Matsumoto R, Mehjabin JJ, Noguchi H, Miyamoto T, Takasuka TE, Hori C. Genomic and Secretomic Analyses of the Newly Isolated Fungus Perenniporia fraxinea SS3 Identified CAZymes Potentially Related to a Serious Pathogenesis of Hardwood Trees. Appl Environ Microbiol 2023; 89:e0027223. [PMID: 37098943 PMCID: PMC10231188 DOI: 10.1128/aem.00272-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/06/2023] [Indexed: 04/27/2023] Open
Abstract
Perenniporia fraxinea can colonize living trees and cause severe damage to standing hardwoods by secreting a number of carbohydrate-activate enzymes (CAZymes), unlike other well-studied Polyporales. However, significant knowledge gaps exist in understanding the detailed mechanisms for this hardwood-pathogenic fungus. To address this issue, five monokaryotic P. fraxinea strains, SS1 to SS5, were isolated from the tree species Robinia pseudoacacia, and high polysaccharide-degrading activities and the fastest growth were found for P. fraxinea SS3 among the isolates. The whole genome of P. fraxinea SS3 was sequenced, and its unique CAZyme potential for tree pathogenicity was determined in comparison to the genomes of other nonpathogenic Polyporales. These CAZyme features are well conserved in a distantly related tree pathogen, Heterobasidion annosum. Furthermore, the carbon source-dependent CAZyme secretions of P. fraxinea SS3 and a nonpathogenic and strong white-rot Polyporales member, Phanerochaete chrysosporium RP78, were compared by activity measurements and proteomic analyses. As seen in the genome comparisons, P. fraxinea SS3 exhibited higher pectin-degrading activities and higher laccase activities than P. chrysosporium RP78, which were attributed to the secretion of abundant glycoside hydrolase family 28 (GH28) pectinases and auxiliary activity family 1_1 (AA1_1) laccases, respectively. These enzymes are possibly related to fungal invasion into the tree lumens and the detoxification of tree defense substances. Additionally, P. fraxinea SS3 showed secondary cell wall degradation capabilities at the same level as that of P. chrysosporium RP78. Overall, this study suggested mechanisms for how this fungus can attack the cell walls of living trees as a serious pathogen and differs from other nonpathogenic white-rot fungi. IMPORTANCE Many studies have been done to understand the mechanisms underlying the degradation of plant cell walls of dead trees by wood decay fungi. However, little is known about how some of these fungi weaken living trees as pathogens. P. fraxinea belongs to the Polyporales, a group of strong wood decayers, and is known to aggressively attack and fell standing hardwood trees all over the world. Here, we report CAZymes potentially related to plant cell wall degradation and pathogenesis factors in a newly isolated fungus, P. fraxinea SS3, by genome sequencing in conjunction with comparative genomic and secretomic analyses. The present study provides insights into the mechanisms of the degradation of standing hardwood trees by the tree pathogen, which will contribute to the prevention of this serious tree disease.
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Affiliation(s)
- Ruy Matsumoto
- Research Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Jakia Jerin Mehjabin
- Research Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
| | - Hideki Noguchi
- Center for Genome Informatics, Joint Support Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka, Japan
- Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka, Japan
| | | | - Taichi E. Takasuka
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
- Global Station for Food, Land, and Water Resources, Hokkaido University, Sapporo, Japan
| | - Chiaki Hori
- Research Faculty of Engineering, Hokkaido University, Sapporo, Japan
- Research Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Ren H, Wu F, Ju H, Wu D, Wei Z. Elaborating the role of rhamnolipids on the formation of humic substances during rice straw composting based on Fenton pretreatment and fungal inoculation. BIORESOURCE TECHNOLOGY 2023; 376:128843. [PMID: 36898556 DOI: 10.1016/j.biortech.2023.128843] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/01/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Composting is a green and sustainable way to dispose and reuse agricultural wastes, but the low degradation rate during composting hinders its application. This study was conducted to explore the effect of added surfactant rhamnolipids after Fenton pretreatment and inoculation of fungi (Aspergillus fumigatus) into the compost on the formation of humic substances (HS) during rice straw composting, and explored the effect of this method. The results showed that rhamnolipids speeded up the degradation of organic matter and HS formation during composting. Rhamnolipids promoted the generation of lignocellulose-degrading products after Fenton pretreatment and fungal inoculation. The differential products benzoic acid, ferulic acid, 2, 4-Di-tert-butylphenol and syringic acid were obtained. Additionally, key fungal species and modules were identified using multivariate statistical analysis. Reducing sugars, pH, and total nitrogen were the key environmental factors that affected HS formation. This study provides a theoretical basis for the high-quality transformation of agricultural wastes.
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Affiliation(s)
- Hao Ren
- Instrumental Analysis Center, Northeast Agricultural University, Northeast Agricultural University, Harbin 150030, China
| | - Fangfang Wu
- Instrumental Analysis Center, Northeast Agricultural University, Northeast Agricultural University, Harbin 150030, China
| | - Hanxun Ju
- Instrumental Analysis Center, Northeast Agricultural University, Northeast Agricultural University, Harbin 150030, China
| | - Di Wu
- Instrumental Analysis Center, Northeast Agricultural University, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- Instrumental Analysis Center, Northeast Agricultural University, Northeast Agricultural University, Harbin 150030, China.
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Wu D, Ren H, Xie L, Zhang G, Zhao Y, Wei Z. Strengthening Fenton-like reactions to improve lignocellulosic degradation performance by increasing lignocellulolytic enzyme core microbes during rice straw composting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 161:72-83. [PMID: 36870299 DOI: 10.1016/j.wasman.2023.02.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/01/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
This study aimed to explore the effect of Fenton-like reactions on lignocellulosic degradation performance and identify their driving factors during composting. Rice straw was pretreated by inoculating Aspergillus fumigatus Z1 and then adding Fe (II), which resulted in Fenton-like reactions. The treatment groups included CK (control), Fe (addition of Fe (II)), Z1 (inoculation of A. fumigatus Z1), and Fe + Z1 (inoculation of A. fumigatus Z1 and addition of Fe (II)). The results suggested that Fenton-like reactions can produce lignocellulolytic enzymes and degrade lignocellulose, due to the variation in microbial community composition and diversity. In addition, functional modular microbes were identified by network analysis, which can produce endoglucanase and xylanase. Regarding ligninase, bacteria were more favorable for producing manganese peroxidase, and fungi were more favorable for producing laccase. Additionally, reducing sugars, organic matter, total nitrogen and amino acids were key microhabitat factors of functional modular bacteria, while organic matter, reducing sugars, amino acids and C/N were key microhabitat factors of functional modular fungi, thereby promoting the degradation of lignocellulose. This study provides technical support for lignocellulosic degradation based on Fenton-like reactions.
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Affiliation(s)
- Di Wu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China; College of Life Science, Northeast Agricultural University, Harbin 150030, China; Center for Ecological Research, Northeast Forestry University, Harbin 150040, China
| | - Hao Ren
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Lina Xie
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Guogang Zhang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
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Agarussi MCN, Pereira OG, Pimentel FE, Azevedo CF, da Silva VP, E Silva FF. Microbiome of rehydrated corn and sorghum grain silages treated with microbial inoculants in different fermentation periods. Sci Rep 2022; 12:16864. [PMID: 36207495 PMCID: PMC9546842 DOI: 10.1038/s41598-022-21461-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 09/27/2022] [Indexed: 11/18/2022] Open
Abstract
Due to the co-evolved intricate relationships and mutual influence between changes in the microbiome and silage fermentation quality, we explored the effects of Lactobacillus plantarum and Propionibacterium acidipropionici (Inoc1) or Lactobacillus buchneri (Inoc2) inoculants on the diversity and bacterial and fungal community succession of rehydrated corn (CG) and sorghum (SG) grains and their silages using Illumina Miseq sequencing after 0, 3, 7, 21, 90, and 360 days of fermentation. The effects of inoculants on bacterial and fungal succession differed among the grains. Lactobacillus and Weissella species were the main bacteria involved in the fermentation of rehydrated corn and sorghum grain silage. Aspergillus spp. mold was predominant in rehydrated CG fermentation, while the yeast Wickerhamomyces anomalus was the major fungus in rehydrated SG silages. The Inoc1 was more efficient than CTRL and Inoc2 in promoting the sharp growth of Lactobacillus spp. and maintaining the stability of the bacterial community during long periods of storage in both grain silages. However, the bacterial and fungal communities of rehydrated corn and sorghum grain silages did not remain stable after 360 days of storage.
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Affiliation(s)
| | - Odilon Gomes Pereira
- Department of Animal Science, Federal University of Vicosa, Avenida PH. Rolfs, Vicosa, Mina Gerais, 36570-900, Brazil.
| | - Felipe Evangelista Pimentel
- Department of Animal Science, Federal University of Vicosa, Avenida PH. Rolfs, Vicosa, Mina Gerais, 36570-900, Brazil
| | - Camila Ferreira Azevedo
- Departament of Statistics, Federal University of Vicosa, Avenida PH. Rolfs, Vicosa, 36570-900, Brazil
| | - Vanessa Paula da Silva
- Department of Animal Science, Federal University of Vicosa, Avenida PH. Rolfs, Vicosa, Mina Gerais, 36570-900, Brazil
| | - Fabyano Fonseca E Silva
- Department of Animal Science, Federal University of Vicosa, Avenida PH. Rolfs, Vicosa, Mina Gerais, 36570-900, Brazil
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Proteome of the Wood Decay Fungus Fomitopsis pinicola Is Altered by Substrate. Microbiol Resour Announc 2022; 11:e0058622. [PMID: 35969048 PMCID: PMC9476946 DOI: 10.1128/mra.00586-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The brown rot fungus
Fomitopsis pinicola
efficiently depolymerizes wood cellulose via the combined activities of oxidative and hydrolytic enzymes. Mass spectrometric analyses of culture filtrates identified specific proteins, many of which were differentially regulated in response to substrate composition.
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Heterologous overexpression and preliminary antimicrobial activity test of salmocin M, a novel colicin M-like bacteriocin against Salmonella sp. Arch Microbiol 2022; 204:154. [PMID: 35088215 PMCID: PMC8794732 DOI: 10.1007/s00203-021-02659-y] [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: 11/08/2019] [Revised: 09/17/2021] [Accepted: 10/11/2021] [Indexed: 11/17/2022]
Abstract
Currently, it is extremely important to identify and describe new alternative compounds with potential antimicrobial properties. Since various natural biological systems are capable of producing active compounds with such properties, many of them have been the subject of intensive study. The aim of this work was to heterologously overexpress, purify and preliminarily investigate the antimicrobial activity of a novel bacteriocin found in Salmonella species. Overexpressed protein shows an amino acid structure homologous to the well-known colicin M and was never expressed previously in the E. coli platform. Purified salmocin M showed an inhibition spectrum against Salmonella and E. coli strains. To determine its potential as an antimicrobial agent for use in medicine or the food industry, preliminary antimicrobial tests against pathogenic bacteria were carried out. Our research demonstrates that bacteriocin can be produced efficiently in bacterial expression systems, which are one of the cheapest and the most popular platforms for recombinant protein production. Moreover, preliminary results of microbiological tests showed its activity against most of the bacterial strains in a dose-dependent manner.
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Iwata M, Gutiérrez A, Marques G, Sabat G, Kersten PJ, Cullen D, Bhatnagar JM, Yadav J, Lipzen A, Yoshinaga Y, Sharma A, Adam C, Daum C, Ng V, Grigoriev IV, Hori C. Omics analyses and biochemical study of Phlebiopsis gigantea elucidate its degradation strategy of wood extractives. Sci Rep 2021; 11:12528. [PMID: 34131180 PMCID: PMC8206109 DOI: 10.1038/s41598-021-91756-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/25/2021] [Indexed: 02/05/2023] Open
Abstract
Wood extractives, solvent-soluble fractions of woody biomass, are considered to be a factor impeding or excluding fungal colonization on the freshly harvested conifers. Among wood decay fungi, the basidiomycete Phlebiopsis gigantea has evolved a unique enzyme system to efficiently transform or degrade conifer extractives but little is known about the mechanism(s). In this study, to clarify the mechanism(s) of softwood degradation, we examined the transcriptome, proteome, and metabolome of P. gigantea when grown on defined media containing microcrystalline cellulose and pine sapwood extractives. Beyond the conventional enzymes often associated with cellulose, hemicellulose and lignin degradation, an array of enzymes implicated in the metabolism of softwood lipophilic extractives such as fatty and resin acids, steroids and glycerides was significantly up-regulated. Among these, a highly expressed and inducible lipase is likely responsible for lipophilic extractive degradation, based on its extracellular location and our characterization of the recombinant enzyme. Our results provide insight into physiological roles of extractives in the interaction between wood and fungi.
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Affiliation(s)
- Mana Iwata
- grid.39158.360000 0001 2173 7691Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 080-682 Japan
| | - Ana Gutiérrez
- grid.466818.50000 0001 2158 9975CSIC, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Reina Mercedes 10, 41012 Seville, Spain
| | - Gisela Marques
- grid.466818.50000 0001 2158 9975CSIC, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Reina Mercedes 10, 41012 Seville, Spain
| | - Grzegorz Sabat
- grid.28803.310000 0001 0701 8607University of Wisconsin Genetics Biotechnology Center, Madison, WI 53706 USA
| | - Philip J. Kersten
- grid.417548.b0000 0004 0478 6311Forest Products Laboratory, USDA, Madison, WI 53726 USA
| | - Daniel Cullen
- grid.417548.b0000 0004 0478 6311Forest Products Laboratory, USDA, Madison, WI 53726 USA
| | - Jennifer M. Bhatnagar
- grid.189504.10000 0004 1936 7558Department of Biology, Boston University, Boston, MA 02215 USA
| | - Jagjit Yadav
- grid.24827.3b0000 0001 2179 9593University of Cincinnati, Cincinnati, OH 45267 USA
| | - Anna Lipzen
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Yuko Yoshinaga
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Aditi Sharma
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Catherine Adam
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Christopher Daum
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Vivian Ng
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA
| | - Igor V. Grigoriev
- grid.451309.a0000 0004 0449 479XLawrence Berkeley National Laboratory, US Department of Energy Joint Genome Institute, Berkeley, CA 94720 USA ,grid.47840.3f0000 0001 2181 7878Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA 94720 USA
| | - Chiaki Hori
- grid.39158.360000 0001 2173 7691Division of Applied Chemistry, Department of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 Japan
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Tartaglia M, Bastida F, Sciarrillo R, Guarino C. Soil Metaproteomics for the Study of the Relationships Between Microorganisms and Plants: A Review of Extraction Protocols and Ecological Insights. Int J Mol Sci 2020; 21:ijms21228455. [PMID: 33187080 PMCID: PMC7697097 DOI: 10.3390/ijms21228455] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 12/19/2022] Open
Abstract
Soil is a complex matrix where biotic and abiotic components establish a still unclear network involving bacteria, fungi, archaea, protists, protozoa, and roots that are in constant communication with each other. Understanding these interactions has recently focused on metagenomics, metatranscriptomics and less on metaproteomics studies. Metaproteomic allows total extraction of intracellular and extracellular proteins from soil samples, providing a complete picture of the physiological and functional state of the “soil community”. The advancement of high-performance mass spectrometry technologies was more rapid than the development of ad hoc extraction techniques for soil proteins. The protein extraction from environmental samples is biased due to interfering substances and the lower amount of proteins in comparison to cell cultures. Soil sample preparation and extraction methodology are crucial steps to obtain high-quality resolution and yields of proteins. This review focuses on the several soil protein extraction protocols to date to highlight the methodological challenges and critical issues for the application of proteomics to soil samples. This review concludes that improvements in soil protein extraction, together with the employment of ad hoc metagenome database, may enhance the identification of proteins with low abundance or from non-dominant populations and increase our capacity to predict functional changes in soil.
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Affiliation(s)
- Maria Tartaglia
- Department of Science and Technology, University of Sannio, via de Sanctis snc, 82100 Benevento, Italy; (M.T.); (R.S.)
| | - Felipe Bastida
- CEBAS-CSIC, Department of Soil and Water Conservation, Campus Universitario de Espinardo, 30100 Murcia, Spain;
| | - Rosaria Sciarrillo
- Department of Science and Technology, University of Sannio, via de Sanctis snc, 82100 Benevento, Italy; (M.T.); (R.S.)
| | - Carmine Guarino
- Department of Science and Technology, University of Sannio, via de Sanctis snc, 82100 Benevento, Italy; (M.T.); (R.S.)
- Correspondence: ; Tel.: +39-824-305145
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Djemiel C, Goulas E, Badalato N, Chabbert B, Hawkins S, Grec S. Targeted Metagenomics of Retting in Flax: The Beginning of the Quest to Harness the Secret Powers of the Microbiota. Front Genet 2020; 11:581664. [PMID: 33193706 PMCID: PMC7652851 DOI: 10.3389/fgene.2020.581664] [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: 07/09/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022] Open
Abstract
The mechanical and chemical properties of natural plant fibers are determined by many different factors, both intrinsic and extrinsic to the plant, during growth but also after harvest. A better understanding of how all these factors exert their effect and how they interact is necessary to be able to optimize fiber quality for use in different industries. One important factor is the post-harvest process known as retting, representing the first step in the extraction of bast fibers from the stem of species such as flax and hemp. During this process microorganisms colonize the stem and produce hydrolytic enzymes that target cell wall polymers thereby facilitating the progressive destruction of the stem and fiber bundles. Recent advances in sequencing technology have allowed researchers to implement targeted metagenomics leading to a much better characterization of the microbial communities involved in retting, as well as an improved understanding of microbial dynamics. In this paper we review how our current knowledge of the microbiology of retting has been improved by targeted metagenomics and discuss how related '-omics' approaches might be used to fully characterize the functional capability of the retting microbiome.
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Affiliation(s)
- Christophe Djemiel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Estelle Goulas
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Nelly Badalato
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Brigitte Chabbert
- Université de Reims Champagne Ardenne, INRAE, UMR FARE A 614, Reims, France
| | - Simon Hawkins
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Sébastien Grec
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
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Proteomic Characterization of Lignocellulolytic Enzymes Secreted by the Insect-Associated Fungus Daldinia decipiens oita, Isolated from a Forest in Northern Japan. Appl Environ Microbiol 2020; 86:AEM.02350-19. [PMID: 32060026 DOI: 10.1128/aem.02350-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 02/11/2020] [Indexed: 12/18/2022] Open
Abstract
Wood-devastating insects utilize their symbiotic microbes with lignocellulose-degrading abilities to extract energy from recalcitrant woods. It is well known that free-living lignocellulose-degrading fungi secrete various carbohydrate-active enzymes (CAZymes) to degrade plant cell wall components, mainly cellulose, hemicellulose, and lignin. However, CAZymes from insect-symbiotic fungi have not been well documented except for a few examples. In this study, an insect-associated fungus, Daldinia decipiens oita, was isolated as a potential symbiotic fungus of female Xiphydria albopicta captured from Hokkaido forest. This fungus was grown in seven different media containing a single carbon source, glucose, cellulose, xylan, mannan, pectin, poplar, or larch, and the secreted proteins were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). A total of 128 CAZymes, including domains of 92 glycoside hydrolases, 15 carbohydrate esterases, 5 polysaccharide lyases, 17 auxiliary activities, and 11 carbohydrate-binding modules, were identified, and these are involved in degradation of cellulose and hemicellulose but not lignin. Together with the results of polysaccharide-degrading activity measurements, we concluded that D. decipiens oita tightly regulates the expression of these CAZymes in response to the tested plant cell wall materials. Overall, this study described the detailed proteomic approach of a woodwasp-associated fungus and revealed that the new isolate, D. decipiens oita, secretes diverse CAZymes to efficiently degrade lignocellulose in the symbiotic environment.IMPORTANCE Recent studies show the potential impacts of insect symbiont microbes on biofuel application with regard to their degradation capability of a recalcitrant plant cell wall. In this study, we describe a novel fungal isolate, D. decipiens oita, as a single symbiotic fungus from the Xiphydria woodwasp found in the northern forests of Japan. Our detailed secretome analyses of D. decipiens oita, together with activity measurements, reveal that this insect-associated fungus exhibits high and broad activities for plant cell wall material degradation, suggesting potential applications within the biomass conversion industry for plant mass degradation.
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Mäkelä MR, Hildén K, Kowalczyk JE, Hatakka A. Progress and Research Needs of Plant Biomass Degradation by Basidiomycete Fungi. GRAND CHALLENGES IN FUNGAL BIOTECHNOLOGY 2020. [DOI: 10.1007/978-3-030-29541-7_15] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Barbi F, Kohler A, Barry K, Baskaran P, Daum C, Fauchery L, Ihrmark K, Kuo A, LaButti K, Lipzen A, Morin E, Grigoriev IV, Henrissat B, Lindahl BD, Martin F. Fungal ecological strategies reflected in gene transcription ‐ a case study of two litter decomposers. Environ Microbiol 2019; 22:1089-1103. [DOI: 10.1111/1462-2920.14873] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/23/2019] [Accepted: 11/20/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Florian Barbi
- Department of Soil and Environment Swedish University of Agricultural Sciences Box 7014, SE‐750 07 Uppsala Sweden
| | - Annegret Kohler
- Laboratoire d'excellence Recherches Avancés sur la Biologie de l'Arbre et les Ecosystèmes Forestiers (LabEx ARBRE), Centre INRA Grand‐Est Université de Lorraine, INRA, UMR Interactions Arbres/Microorganismes (IAM) 54280 Champenoux France
| | - Kerrie Barry
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
| | - Preetisri Baskaran
- Department of Ecology Swedish University of Agricultural Sciences Box 7044, SE‐750 07 Uppsala Sweden
| | - Chris Daum
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
| | - Laure Fauchery
- Laboratoire d'excellence Recherches Avancés sur la Biologie de l'Arbre et les Ecosystèmes Forestiers (LabEx ARBRE), Centre INRA Grand‐Est Université de Lorraine, INRA, UMR Interactions Arbres/Microorganismes (IAM) 54280 Champenoux France
| | - Katarina Ihrmark
- Department of Forest Mycology and Plant Pathology Swedish University of Agricultural Sciences Box 7026, 750 07 Uppsala Sweden
| | - Alan Kuo
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
| | - Kurt LaButti
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
| | - Anna Lipzen
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
| | - Emmanuelle Morin
- Laboratoire d'excellence Recherches Avancés sur la Biologie de l'Arbre et les Ecosystèmes Forestiers (LabEx ARBRE), Centre INRA Grand‐Est Université de Lorraine, INRA, UMR Interactions Arbres/Microorganismes (IAM) 54280 Champenoux France
| | - Igor V. Grigoriev
- US Department of Energy Joint Genome Institute Walnut Creek CA 94598 USA
- Department of Plant and Microbial Biology University of California, Berkeley Berkeley CA 94720 USA
| | - Bernard Henrissat
- CNRS UMR 7257, Aix‐Marseille University 13288 Marseille France
- INRA, USC 1408 AFMB 13288 Marseille France
- Department of Biological Sciences King Abdulaziz University Jeddah Saudi Arabia
| | - Björn D. Lindahl
- Department of Soil and Environment Swedish University of Agricultural Sciences Box 7014, SE‐750 07 Uppsala Sweden
| | - Francis Martin
- Laboratoire d'excellence Recherches Avancés sur la Biologie de l'Arbre et les Ecosystèmes Forestiers (LabEx ARBRE), Centre INRA Grand‐Est Université de Lorraine, INRA, UMR Interactions Arbres/Microorganismes (IAM) 54280 Champenoux France
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry University 35 Qinghua East Road, Haidian Qu Beijing Shi 100083 China
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13
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Tan H, Kohler A, Miao R, Liu T, Zhang Q, Zhang B, Jiang L, Wang Y, Xie L, Tang J, Li X, Liu L, Grigoriev IV, Daum C, LaButti K, Lipzen A, Kuo A, Morin E, Drula E, Henrissat B, Wang B, Huang Z, Gan B, Peng W, Martin FM. Multi-omic analyses of exogenous nutrient bag decomposition by the black morel Morchella importuna reveal sustained carbon acquisition and transferring. Environ Microbiol 2019; 21:3909-3926. [PMID: 31314937 DOI: 10.1111/1462-2920.14741] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/24/2022]
Abstract
The black morel (Morchella importuna Kuo, O'Donnell and Volk) was once an uncultivable wild mushroom, until the development of exogenous nutrient bag (ENB), making its agricultural production quite feasible and stable. To date, how the nutritional acquisition of the morel mycelium is fulfilled to trigger its fruiting remains unknown. To investigate the mechanisms involved in ENB decomposition, the genome of a cultivable morel strain (M. importuna SCYDJ1-A1) was sequenced and the genes coding for the decay apparatus were identified. Expression of the encoded carbohydrate-active enzymes (CAZymes) was then analyzed by metatranscriptomics and metaproteomics in combination with biochemical assays. The results show that a diverse set of hydrolytic and redox CAZymes secreted by the morel mycelium is the main force driving the substrate decomposition. Plant polysaccharides such as starch and cellulose present in ENB substrate (wheat grains plus rice husks) were rapidly degraded, whereas triglycerides were accumulated initially and consumed later. ENB decomposition led to a rapid increase in the organic carbon content in the surface soil of the mushroom bed, which was thereafter consumed during morel fruiting. In contrast to the high carbon consumption, no significant acquisition of nitrogen was observed. Our findings contribute to an increasingly detailed portrait of molecular features triggering morel fruiting.
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Affiliation(s)
- Hao Tan
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Annegret Kohler
- Université de Lorraine, Institut National de la Recherche Agronomique, UMR Interactions Arbres/Microorganismes, Centre INRA-GrandEst, Champenoux, 54280, France
| | - Renyun Miao
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Tianhai Liu
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Qiang Zhang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Bo Zhang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Lin Jiang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Yong Wang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Liyuan Xie
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Jie Tang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Xiaolin Li
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Lixu Liu
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Igor V Grigoriev
- US Department of Energy Joint Genome Institute, Walnut Creek, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - Chris Daum
- US Department of Energy Joint Genome Institute, Walnut Creek, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - Kurt LaButti
- US Department of Energy Joint Genome Institute, Walnut Creek, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - Anna Lipzen
- US Department of Energy Joint Genome Institute, Walnut Creek, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - Alan Kuo
- US Department of Energy Joint Genome Institute, Walnut Creek, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - Emmanuelle Morin
- Université de Lorraine, Institut National de la Recherche Agronomique, UMR Interactions Arbres/Microorganismes, Centre INRA-GrandEst, Champenoux, 54280, France
| | - Elodie Drula
- Architecture et Fonction des Macromolécules Biologiques, CNRS, Aix-Marseille University, Marseille, F-13288, France.,Institut National de la Recherche Agronomique, USC1408 Architecture et Fonction des Macromolécules Biologiques, Marseille, F-13288, France.,Department of Biological Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Bernard Henrissat
- Architecture et Fonction des Macromolécules Biologiques, CNRS, Aix-Marseille University, Marseille, F-13288, France.,Institut National de la Recherche Agronomique, USC1408 Architecture et Fonction des Macromolécules Biologiques, Marseille, F-13288, France.,Department of Biological Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Bo Wang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Zhongqian Huang
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Bingcheng Gan
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Weihong Peng
- National-Local Joint Engineering Laboratory of Breeding and Cultivation of Edible and Medicinal Fungi, Mushroom Research Center, Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.,Scientific Observing and Experimental Station of Agro-Microbial Resource and Utilization in Southwest China, Ministry of Agriculture, Chengdu, China
| | - Francis M Martin
- Université de Lorraine, Institut National de la Recherche Agronomique, UMR Interactions Arbres/Microorganismes, Centre INRA-GrandEst, Champenoux, 54280, France
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14
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Valadares F, Gonçalves TA, Damasio A, Milagres AM, Squina FM, Segato F, Ferraz A. The secretome of two representative lignocellulose-decay basidiomycetes growing on sugarcane bagasse solid-state cultures. Enzyme Microb Technol 2019; 130:109370. [PMID: 31421724 DOI: 10.1016/j.enzmictec.2019.109370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/27/2019] [Accepted: 07/02/2019] [Indexed: 12/14/2022]
Abstract
Secretome evaluations of lignocellulose-decay basidiomycetes can reveal new enzymes in selected fungal species that degrade specific substrates. Proteins discovered in such studies can support biorefinery development. Brown-rot (Gloeophyllum trabeum) and white-rot (Pleurotus ostreatus) fungi growing in sugarcane bagasse solid-state cultures produced 119 and 63 different extracellular proteins, respectively. Several of the identified enzymes are suitable for in vitro biomass conversion, including a range of cellulases (endoglucanases, cellobiohydrolases and β-glucosidases), hemicellulases (endoxylanases, α-arabinofuranosidases, α-glucuronidases and acetylxylan esterases) and carbohydrate-active auxiliary proteins, such as AA9 lytic polysaccharide monooxygenase, AA1 laccase and AA2 versatile peroxidase. Extracellular oxalate decarboxylase was also detected in both fungal species, exclusively in media containing sugarcane bagasse. Interestingly, intracellular AA6 quinone oxidoreductases were also exclusively produced under sugarcane bagasse induction in both fungi. These enzymes promote quinone redox cycling, which is used to produce Fenton's reagents by lignocellulose-decay fungi. Hitherto undiscovered hypothetical proteins that are predicted in lignocellulose-decay fungi genomes appeared in high relative abundance in the cultures containing sugarcane bagasse, which suggests undisclosed, new biochemical mechanisms that are used by lignocellulose-decay fungi to degrade sugarcane biomass. In general, lignocellulose-decay fungi produce a number of canonical hydrolases, as well as some newly observed enzymes, that are suitable for in vitro biomass digestion in a biorefinery context.
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Affiliation(s)
- Fernanda Valadares
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil
| | - Thiago A Gonçalves
- Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, 18023-000 Sorocaba, SP, Brazil; Institute of Biology, University of Campinas (UNICAMP), 13080-655, Campinas, SP, Brazil
| | - André Damasio
- Institute of Biology, University of Campinas (UNICAMP), 13080-655, Campinas, SP, Brazil
| | - Adriane Mf Milagres
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil
| | - Fabio M Squina
- Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, 18023-000 Sorocaba, SP, Brazil
| | - Fernando Segato
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil
| | - André Ferraz
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil.
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15
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Developments and opportunities in fungal strain engineering for the production of novel enzymes and enzyme cocktails for plant biomass degradation. Biotechnol Adv 2019; 37:107361. [PMID: 30825514 DOI: 10.1016/j.biotechadv.2019.02.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/11/2019] [Accepted: 02/23/2019] [Indexed: 12/26/2022]
Abstract
Fungal strain engineering is commonly used in many areas of biotechnology, including the production of plant biomass degrading enzymes. Its aim varies from the production of specific enzymes to overall increased enzyme production levels and modification of the composition of the enzyme set that is produced by the fungus. Strain engineering involves a diverse range of methodologies, including classical mutagenesis, genetic engineering and genome editing. In this review, the main approaches for strain engineering of filamentous fungi in the field of plant biomass degradation will be discussed, including recent and not yet implemented methods, such as CRISPR/Cas9 genome editing and adaptive evolution.
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16
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Leonhardt S, Hoppe B, Stengel E, Noll L, Moll J, Bässler C, Dahl A, Buscot F, Hofrichter M, Kellner H. Molecular fungal community and its decomposition activity in sapwood and heartwood of 13 temperate European tree species. PLoS One 2019; 14:e0212120. [PMID: 30763365 PMCID: PMC6375594 DOI: 10.1371/journal.pone.0212120] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 01/28/2019] [Indexed: 12/27/2022] Open
Abstract
Deadwood is an important structural component in forest ecosystems and plays a significant role in global carbon and nutrient cycling. Relatively little is known about the formation and decomposition of CWD by microbial communities in situ and about the factors controlling the associated processes. In this study, we intensively analyzed the molecular fungal community composition and species richness in relation to extracellular enzyme activity and differences in decomposing sapwood and heartwood of 13 temperate tree species (four coniferous and nine deciduous species, log diameter 30–40 cm and 4 m long) in an artificial experiment involving placing the logs on the forest soil for six years. We observed strong differences in the molecular fungal community composition and richness among the 13 tree species, and specifically between deciduous and coniferous wood, but unexpectedly no difference was found between sapwood and heartwood. Fungal species richness correlated positively with wood extractives and negatively with fungal biomass. A distinct fungal community secreting lignocellulolytic key enzymes seemed to dominate the decomposition of the logs in this specific phase. In particular, the relative sequence abundance of basidiomycetous species of the Meruliaceae (e.g. Bjerkandera adusta) correlated with ligninolytic manganese peroxidase activity. Moreover, this study reveals abundant white-rot causing Basidiomycota and soft-rot causing Ascomycota during this phase of wood decomposition.
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Affiliation(s)
- Sabrina Leonhardt
- Technische Universität Dresden, International Institute Zittau, Department of Bio- and Environmental Sciences, Zittau, Germany
- * E-mail:
| | - Björn Hoppe
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Halle (Saale), Germany
- Julius Kuehn-Institute, Institute for National and International Plant Health, Braunschweig, Germany
| | - Elisa Stengel
- University of Würzburg, Field Station Fabrikschleichach, Rauhenebrach, Germany
| | - Lisa Noll
- University of Vienna, Department of Microbiology and Ecosystem Science, Vienna, Austria
| | - Julia Moll
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Halle (Saale), Germany
| | | | - Andreas Dahl
- Technische Universität Dresden, Center for Molecular and Cellular Bioengineering, CMCB Technology Platform, Deep Sequencing Group, Dresden, Germany
| | - Francois Buscot
- UFZ-Helmholtz Centre for Environmental Research, Department of Soil Ecology, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Leipzig, Germany
| | - Martin Hofrichter
- Technische Universität Dresden, International Institute Zittau, Department of Bio- and Environmental Sciences, Zittau, Germany
| | - Harald Kellner
- Technische Universität Dresden, International Institute Zittau, Department of Bio- and Environmental Sciences, Zittau, Germany
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17
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The Foliar Endophyte Phialocephala scopiformis DAOMC 229536 Proteome When Grown on Wood Used as the Sole Carbon Source. Microbiol Resour Announc 2019; 8:MRA01280-18. [PMID: 30746512 PMCID: PMC6368647 DOI: 10.1128/mra.01280-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/04/2019] [Indexed: 12/03/2022] Open
Abstract
The conifer needle endophyte Phialocephala scopiformis DAOMC 229536 was cultivated in medium containing ground Pinus contorta wood as the sole carbon source. Mass spectrometry analyses identified 590 proteins. The conifer needle endophyte Phialocephala scopiformis DAOMC 229536 was cultivated in medium containing ground Pinus contorta wood as the sole carbon source. Mass spectrometry analyses identified 590 proteins. The expression of extracellular hydrolases and oxidoreductases indicates a capacity to degrade wood. The results clearly demonstrate the latent saprophytic potential of P. scopiformis.
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