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Trichoderma hamatum strain:FBL 587

ABSTRACT: Draft genome sequence of Trichoderma hamatum FBL 587: insights into safe biotechnological application.

PROVIDER: PRJNA513966 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR10674065_1.fastq.gz	Fastqsanger.gz
	SRR10674065_2.fastq.gz	Fastqsanger.gz
	SRR14056734.fastq.gz	Fastqsanger.gz
	SRR14056735.fastq.gz	Fastqsanger.gz

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Growth promotion of Arabidopsis by Trichoderma hamatum

Project description:Trichoderma spp. are ubiquitous soil-borne ascomycetous fungi that have been used widely in the biological control of plant diseases. Certain strains also exhibit growth promotion of plants, but the mechanism for this phenomenon has not yet been elucidated. We have recently identified an isolate of T. hamatum that causes significant increases in the development of Arabidopsis root systems. The aim of this work is to elucidate the mechanism of root growth promotion. One approach is to analyse the transcriptome of plants grown in the presence and absence of the fungus. Experimenter name = Christopher Thornton Experimenter phone = 01392 264653 / 01392 264689 Experimenter department = Washington Singer Lab Experimenter address = School of Biological and Chemical Sciences Experimenter address = University of Exeter Experimenter address = Perry Road, Exeter, Experimenter zip/postal_code = EX4 4QG Experimenter country = UK Keywords: pathogenicity_design, stimulus_or_stress_design

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Transcriptomic Responses of Cannabis sativa L. to Trichoderma hamatum Treated under Drought Conditions

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Transcriptional reprogramming underpins enhanced plant growth promotion by the biocontrol fungus Trichoderma hamatum GD12 during antagonistic interactions with Sclerotinia sclerotiorum in soil

Project description:The free-living soil fungus Trichoderma hamatum GD12 is notable amongst other Trichoderma strains in exhibiting both biocontrol and plant growth promotion (PGP) activities, which are coincident with a markedly expanded genome when compared to other characterised biocontrol and PGP isolates. Here, we make direct comparisons of T. hamatum GD12 transcription during PGP, and during antagonism of the root-infecting pathogen Sclerotinia sclerotiorum, in peat-based microcosms. An extensive mRNA-seq analysis sampling six time-points, 1, 2, 4, 7, 10 and 15 days after microcosm establishment revealed dynamic and biphasic signatures in the transcriptional responses of T. hamatum GD12 during Sclerotinia biocontrol and lettuce growth promotion. Functional analysis of differentially expressed genes demonstrated up-regulation of transportation and oxidation-reduction genes during both processes. Sclerotinia biocontrol is most likely mediated by the synthesis and secretion of antifungal compounds. Notably, the biphasic response during biocontrol was further characterised by the expression of a number of uncharacterised GD12 genes, small-secreted cysteine rich proteins and secondary metabolite producing gene clusters. This work demonstrates that T. hamatum GD12 harnesses a reservoir of uncharacterised genes that are actively engaged during effective biological control of a plurivorous plant pathogen.

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Transcription profiling of Arabidopsis root after Trichoderma hamatum induced proliferation

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A Genomic and Transcriptomic Study on the DDT-Resistant Trichoderma hamatum FBL 587: First Genetic Data into Mycoremediation Strategies for DDT-Polluted Sites.

Project description:Trichoderma hamatum FBL 587 isolated from DDT-contaminated agricultural soils stands out as a remarkable strain with DDT-resistance and the ability to enhance DDT degradation process in soil. Here, whole genome sequencing and RNA-Seq studies for T. hamatum FBL 587 under exposure to DDT were performed. In the 38.9 Mb-genome of T. hamatum FBL 587, 10,944 protein-coding genes were predicted and annotated, including those of relevance to mycoremediation such as production of secondary metabolites and siderophores. The genome-scale transcriptional responses of T. hamatum FBL 587 to DDT exposure showed 1706 upregulated genes, some of which were putatively involved in the cellular translocation and degradation of DDT. With regards to DDT removal capacity, it was found upregulation of metabolizing enzymes such as P450s, and potentially of downstream DDT-transforming enzymes such as epoxide hydrolases, FAD-dependent monooxygenases, glycosyl- and glutathione-transferases. Based on transcriptional responses, the DDT degradation pathway could include transmembrane transporters of DDT, antioxidant enzymes for oxidative stress due to DDT exposure, as well as lipases and biosurfactants for the enhanced solubility of DDT. Our study provides the first genomic and transcriptomic data on T. hamatum FBL 587 under exposure to DDT, which are a base for a better understanding of mycoremediation strategies for DDT-polluted sites.

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