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Series GSE233738 Query DataSets for GSE233738
Status Public on Nov 14, 2023
Title Effect of the res-2 transcription factor gene deletion on protein secretion and stress response in the hyperproducer strain Trichoderma reesei Rut-C30
Organism Trichoderma reesei RUT C-30
Experiment type Expression profiling by high throughput sequencing
Summary The fungus Trichoderma reesei is one of the most used industrial cellulase producers due to its high capacity of protein secretion. The strain was shown to possess an expanded endoplasmic reticulum, but the genetic factors responsible for this phenotype remain still unidentified. Recently, three new transcription factors were described in Neurospora crassa which were demonstrated to be involved in protein secretion. The orthologous gene of one of them, Res-2, was deleted in the T. reesei hyperproducer strain Rut-C30 and its role on protein secretion analyzed. The mutant strain showed slower growth on all substrates tested, but the presence of the stress agent DTT had contrasting effects. Protein secretion tended to be lower in the deletion strain compared to the parental strain Rut-C30. Analysis of the transcriptomes of the Rut-C30 and the Δres-2 mutant strain in secretion stress conditions reveiled remarkably few differences, but induction of cellulase secretion and/or presence of DTT led to differential expression of genes coding for transporters, redox genes and lipid metabolism. These results suggest that in the T. reesei Rut-C30 strain, Res-2 does not act as a master regulator of the secretion pathway, but contributes to a high protein secretion by adjusting the expression of genes involved in membrane turnover and the redox status of the organism or specific organelles.
Overall design Rut-C30 and the Δres-2 strain were cultivated in fed flasks and after a 48h batch phase on glucose medium, they were submitted to either a glucose (control condition) or lactose fed-batch. Two other conditions included the exposure to 10 mM DTT for 2 hours at the end of the glucose and the lactose fed-batch. All samples were run in duplicates and mycelia were collected after 48h of fed-batch for RNA extraction.
Contributor(s) Alharake J, Heiss-Blanquet S, Bidard-Michelot F, Margeot A, Senamaud-Beaufort C
Citation(s) 38036984
Submission date May 30, 2023
Last update date Dec 14, 2023
Contact name Stephane Le Crom
Organization name IBENS
Department Genomic Core Facility
Street address 46 rue Ulm
ZIP/Postal code 75230
Country France
Platforms (1)
GPL33444 NextSeq 2000 (Trichoderma reesei RUT C-30)
Samples (16)
GSM7433602 filamentous fungus reference strain, glucose, rep1
GSM7433603 filamentous fungus reference strain, glucose, rep2
GSM7433604 filamentous fungus reference strain, glucose + DTT, rep1
BioProject PRJNA977675

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Supplementary file Size Download File type/resource
GSE233738_RAW.tar 720.0 Kb (http)(custom) TAR (of TSV)
GSE233738_Treesei_QM6a.gff.gz 442.7 Kb (ftp)(http) GFF
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Raw data are available in SRA
Processed data provided as supplementary file

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