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ABSTRACT: white rot fungi Lenzites gibbosa sequencing

PROVIDER: PRJNA628131 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11617831_1.fastq.gz	Fastqsanger.gz
	SRR11617831_2.fastq.gz	Fastqsanger.gz
	SRR11617832_1.fastq.gz	Fastqsanger.gz
	SRR11617832_2.fastq.gz	Fastqsanger.gz
	SRR11617833_1.fastq.gz	Fastqsanger.gz

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Gene expression at the transcriptional level of the white-rot fungus Lenzites gibbosa during wood degradation.

Project description:To determine the wood degradation mechanism and its key genes of Lenzites gibbosa, we sequenced 15 transcriptomes of mycelial samples under woody environments at 3, 5, 7, and 11 d (D3, D5, D7, and D11) and non-woody environments (CK). All the transcripts were annotated as much as possible in eight databases to determine their function. The key genes and biological processes, relating to wood degradation, were predicted and screened. A total of 2069 differentially expressed genes (DEGs) were obtained in ten differential groups. Comparing wood with non-wood treatment conditions, the key genes were those participating in oxidation-reduction process, they were oxidoreductases and peroxidases genes, and their regulators genes; these genes mainly focused on the three biological processes of carbohydrate metabolism, lignin catabolism, and secondary metabolites biosynthesis, transport and catabolism. The mostly enriched subcategories in molecular function were oxidoreductase activity, peroxidase activity, and heme binding in GO annotation. One cellulose and hemicellulose degradation pathway and seven pathways related to lignin-derived aromatic compounds degradation or late lignin degradation were found. In conclusion, during the process of L. gibbosa growing on wood, gene expression at the transcriptional level indicated that lignin catabolism and hyphal growth were promoted, but the metabolism of carbon and carbohydrates including cellulose in lignocellulose in overall trend was inhibited to some extent. The results have important reference value for the study of degradation mechanism of wood white rot.

2023-09-17 | GSE184416 | GEO

Comparing gene expression timing and amplitude to delineate the unique pathways of brown and white rot wood-degrading fungi

Project description:Wood-degrading fungi play a critical role in global carbon cycling, and their varied mechanisms for deconstruction offer pathways for industrial bioconversion. In this study, we used comparative genomics to isolate upregulation patterns among fungi with brown rot (carbohydrate-selective) or white rot (lignin-degrading) nutritional modes. Specifically, we used whole-transcriptome profiling to compare early, middle, and late decay stages on wood wafers, matching differentially-expressed gene (DEG) patterns with fungal growth and enzyme activities. This approach highlighted 34 genes uniquely upregulated in early brown rot stages, with notable candidates involved in generating reactive oxygen species (ROS) as a pretreatment mechanism during brown rot. This approach further isolated 18 genes in late brown rot stages that may be adapted to handle oxidatively-reacted lignocellulose components. By summing gene expression levels in functional classes, we also identified a broad and reliable distinction in glycoside hydrolase (GH) versus lignocellulose oxidative (LOX) transcript counts that may reflect the energy investment burden of lignin-degrading machinery among white rot fungi.

2018-01-05 | GSE108189 | GEO

The integrative omics of white-rot fungus Pycnoporus coccineus reveals co-regulated CAZymes for orchestrated lignocellulose breakdown.

Project description:White-rot basidiomycete fungi are potent degraders of plant biomass with the ability to mineralize all lignocellulose components. Recent comparative genomics studies showed that these fungi use a wide diversity of enzymes for wood degradation. In order to improve our understanding on the enzymatic mechanisms leading to lignocellulose breakdown, we analysed the early response of the white-rot fungus Pycnoporus coccineus CIRM-BRFM310 to various lignocellulosic substrates at two time points; Day 3 and Day 7.

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Project description:Transcriptome sequencing of Lenzites gibbosa.

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Project description:Transcriptome sequencing of Lenzites gibbosa

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Gene expression at the transcriptional level of the white-rot fungus Lenzites gibbosa during wood degradation.

Project description:Gene expression at the transcriptional level of the white-rot fungus Lenzites gibbosa during wood degradation.

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Project description:Unique ability of basidiomycete white rot fungi to degrade all components of plant cell walls makes them indispensable organisms in global carbon cycle. In this study, we analyzed proteomes of two closely related white rot fungi, Obba rivulosa and Gelatoporia subvermispora, while growing on solid spruce wood, and defined a core set of CAZymes that was shared between these species including the orthologous enzymes. Similar production pattern of these CAZymes indicate their key role in plant biomass degradation and need for their further biochemical characterization. The obtained results give an insight into specific enzymes and enzyme sets that are produced during the degradation of solid spruce wood. These findings expand the knowledge on enzyme production in nature-mimicking conditions and may contribute to exploitation of white rot fungi and their enzymes in biotechnological applications.

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LongSAGE during the initiation of ligninolytic enzymes production in Phanerochaete chrysosporium

Project description:White rot fungi are able to degrade woody lignin and other persistent organic compounds including artificial chemicals (e.g. chlorinated dioxin) in secondary metabolism. This ability has potential in a wide range of biotechnological applications including remediation of organopollutants and the industrial processing of paper and textiles. Ligninolytic fungi secondarily secrete extracellular oxidative enzymes thought to play an important role in these compounds decay. However, detail of metabolic pathway and initiation signals of the degradation system is unclear. To investigate genes directly and indirectly related to it, we constructed long serial analysis of gene expression (Long SAGE) library from the most studied white rot fungus, Phanerochaete chrysosporium. Keywords: transcriptome profiling

2007-12-31 | GSE6649 | GEO

Project description:Lenzites gibbosa treatmented by alizarin red

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Hallmarks of basidiomycete soft- and white-rot in wood-decay -omics data of Armillaria [ARCE]

Project description:The genus Armillaria spp. (Fungi, Basidiomycota) includes devastating pathogens of temperate forests and saprotrophs that decay wood. Pathogenic and saprotrophic Armillaria species can efficiently colonize and decay woody substrates, however, mechanisms of wood penetration and colonization are poorly known. We assayed the colonization and decay of autoclaved spruce roots using the conifer-specialists Armillaria ostoyae and A. cepistipes using transcriptomic and proteomic data. Transcript and protein levels were altered more extensively in the saprotrophic A. cepistipes than in the pathogenic A. ostoyae and in invasive mycelia of both species compared to their rhizomorphs. Diverse suites of carbohydrate-active enzyme genes (CAZymes), in particular pectinolytic ones and expansins, were upregulated in both species, whereas ligninolytic genes were mostly downregulated. Our gene expression data, together with previous comparative genomic and decay-chemistry analyses suggest that wood decay by Armillaria differs from that of typical white rot fungi and shows features resembling soft rot. We propose that Armillaria species have modified the ancestral white rot machinery so that it allows for selective ligninolysis based on environmental conditions and/or host types.

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