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Transcriptome sequencing of Trichoderma guizhouense NJAU4742 and its mutants when induced by different polysaccharides or carbon starvation

ABSTRACT: Transcriptome sequencing of Trichoderma guizhouense NJAU4742 and its mutants when induced by different polysaccharides or carbon starvation

PROVIDER: PRJNA736040 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14760500_1.fastq.gz	Fastqsanger.gz
	SRR14760500_2.fastq.gz	Fastqsanger.gz
	SRR14760501_1.fastq.gz	Fastqsanger.gz
	SRR14760501_2.fastq.gz	Fastqsanger.gz
	SRR14760502_1.fastq.gz	Fastqsanger.gz

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Transcriptome sequencing of Trichoderma guizhouense NJAU4742 and its mutants when induced by different polysaccharides or carbon starvation

Project description:The goal of this study is to find novel regulatory details of plant biomass-degrading enzymes in filamentous fungus Trichoderma guizhouense NJAU4742. Strain NJAU4742 and its mutants (∆Tgxyr1,∆Tgace1 and ∆Tgace2) were firstly incubated using 2% glucose, and then transfered into the medium containing different polysaccharides (xylan or cellulose) or carbon starvation. After 0h, 4h, 24h or 72h, samples were extracted and used for transcriptome sequencing in Illumina platform.

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Project description:Plant-beneficial fungi from the genus Trichoderma (Hypocreales, Ascomycota) can control oomyceteous plant-pathogenic Pythium myriotylum (Peronosporales, Oomycota) and thus serve as bioeffectors for the eco-friendly products of crop protection. However, the underlying mechanisms of microbe-microbe interactions have yet to be fully understood. In this study, we focused on the role of the Trichoderma secretome induced by P. myriotylum mycelia. For this purpose, we selected strains showing strong (T. asperellum, T. atroviride, T. virens), moderate (T. cf. guizhouense, T. reesei), and weak (T. parepimyces) activities, respectively, and cultured with the sterilized P. myriotylum mycelia. Secreted proteins were analyzed using label-free LC-MS/MS, bioinformatic localization prediction, gene ontology (GO) annotation, and ortholog analysis. The exoproteomic analysis quantified proteins in the six Trichoderma spp., suggesting unequal antagonistic mechanisms among the strong and weak strains, respectively, with different proportions of putative cellulases, proteases, redox enzymes, and extracellular proteins of unknown function. Notably, proteolysis-related proteins were abundant, while the abundant proteases tended not to be conserved across the species (i.e., non-orthologous). Putative cellobiohydrolases were detected abundantly in all Trichoderma species except for the weak antagonist T. parepimyces, even though its genome encodes for these proteins. Notably, secretomes of the most potent anti-Pythium bioeffectors tended to have higher endo-cellulase activity. Cellulose and other glucans are major components of the oomycete cell wall, which was partly reflected in the cellulases produced by the Trichoderma species. The varying abundances of orthologous proteins suggested the evolution of differing transcription regulation mechanisms across the Trichoderma genus in response to the ubiquitous presence of Oomycota.

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