Project description:The goals of this study are to compare differential gene expressions for Penicillium oxalicum wild type strain (WT), laeA knockout strain (ΔlaeA), creA knockout strain (ΔcreA), and double genes knockout strain (ΔlaeAΔcreA). The deletion of laeA downregulated genes involved in oxidation- reduction process, alkaloid metabolic process, and transmembrane transport. We find the expression levels of seven secondary metabolism gene clusters (totally 28 clusters) were silenced inΔlaeA. The deletion of creA upregulated genes involved in hydrolase activity, acting on glycosyl bonds. Many genes involved in conidiation were drastically regulated inΔlaeAΔcreA. This study provides the information that combined laeA and creA function are required in conidiation and hydrolase activity of P. oxalicum.
Project description:The goals of this study are to compare differential gene expressions for Penicillium oxalicum wild type strain (WT), laeA knockout strain (M-NM-^TlaeA), creA knockout strain (M-NM-^TcreA), and double genes knockout strain (M-NM-^TlaeAM-NM-^TcreA). The deletion of laeA downregulated genes involved in oxidation- reduction process, alkaloid metabolic process, and transmembrane transport. We find the expression levels of seven secondary metabolism gene clusters (totally 28 clusters) were silenced inM-NM-^TlaeA. The deletion of creA upregulated genes involved in hydrolase activity, acting on glycosyl bonds. Many genes involved in conidiation were drastically regulated inM-NM-^TlaeAM-NM-^TcreA. This study provides the information that combined laeA and creA function are required in conidiation and hydrolase activity of P. oxalicum. Examination of differential gene expressions by digital gene expression tag profiling in Penicillium oxalicum wild type strain and three mutant strains (laeA knockout strain, creA knockout strain and double genes knockout strain). qRTM-bM-^@M-^SPCR validation was performed using SYBR Green assays.
Project description:Expression data from batch cultivations of Aspergillus niger wild type strain ATCC 1015 and adrA, facB and creA deletion mutants constructed on ATCC 1015 background strain with glucose or glycerol as carbon sources. Genome-wide transcriptome analysis was used to identify genes either affected directly or indirectly by each transcription factor investigated during growth on a repressing or a derepressing carbon source. For this purpose, batch cultivations under well-controlled conditions were performed with Aspergillus niger wild type strain ATCC 1015 and the three deletion mutants of the corresponding transcription factors AdrA, FacB and CreA. Samples for RNA extraction were collected and further processed for hybridization in custom-designed Affymetrix microarrays containing probes for three Aspergillus species, including A. niger.
Project description:The goals of this study are to compare differential gene expressions for Penicillium oxalicum wild type strain (WT), laeA knockout strain (ΔlaeA), rcoA knockout strain (ΔrcoA), and clrB knockout strain (ΔclrB). The deletion of laeA downregulated genes involved in oxidation- reduction process, alkaloid metabolic process, and transmembrane transport. We find the expression levels of seven secondary metabolism gene clusters (totally 28 clusters) were silenced inΔlaeA. The deletion of clrB downregulated genes involved in hydrolase activity, acting on glycosyl bonds. Many genes involved in conidiation were drastically regulated in ΔrcoA. This study provides the information that combined laeA, clrB and rcoA function are required in conidiation and hydrolase activity of P. oxalicum.
Project description:RNA-seq was used to compare the responses of Penicillium oxalicum strains to different carbon sources including carbon-starvation, glucose and cellulose. The wild-type strain and transcription facor (ClrB, CreA and AmyR) mutants were studied.
Project description:Purpose: This transcriptomic analysis aims at unveiling all possible genes orchestrated by Cfp1, which is evidently required for insect pathogenicity and virulence-related cellular events of Metarhizium robertsii. Methods: Total RNAs were extracted from three 3-day-old hyphal cultures (replicates) of cfp1 disruption and wild-type strains grown under normal culture conditionsand and subjected to deep sequencing on Illumina NovaseqTM 6000 platform. The sequence reads that passed quality filters were mapped to the genome of Metarhizium robertsii. All genes differentially expressed in the disruptant versus the wild-type strain were enriched to GO function classes and KEGG pathways. Results: The resultant transcriptome comprises 10681 detected genes. Among those, 605 genes were dysregulated in the absence of cfp1, including 356 down-regulated and 249 up-regulated. Conclusions: Cfp1 lacking any predictable function domain has profound impact on the genomic expression of Metarhizium robertsii.
Project description:A spontaneously phenotypically degenerated strain of M. robertsii strain ARSEF 2575 (M. robertsii lc2575; lc = low conidiation) showed a reduction in conidiation and fungal virulence after successive subculturing on artificial medium. However, the conidial production and fungal virulence of a phenotypically degenerated M. robertsii were recovered by serially passaging through a plant host. The DNA methylation level of phenotypically degenerated Metarhizium robertsii M. robertsii lc2575 and this fungi after solider bean passages were tested through the whole genome bisulfite sequencing. The results showed that approximately 0.379 % of cytosines are methylated in the fungi after bean passages, almost the same as the DNA methylation level in M. robertsii lc2575 (0.375%). The distribution of different methylated regions located more on intergenic regions of fungi after bean passages than M. robertsii lc2575. Gene Ontology (GO) analysis and KEGG analysis of DMR-associated genes revealed that amino acid, carbohydrate and fatty acid metabolism.
Project description:Expression data from batch cultivations of Aspergillus niger wild type strain ATCC 1015 and adrA, facB and creA deletion mutants constructed on ATCC 1015 background strain with glucose or glycerol as carbon sources. Genome-wide transcriptome analysis was used to identify genes either affected directly or indirectly by each transcription factor investigated during growth on a repressing or a derepressing carbon source. For this purpose, batch cultivations under well-controlled conditions were performed with Aspergillus niger wild type strain ATCC 1015 and the three deletion mutants of the corresponding transcription factors AdrA, FacB and CreA. Samples for RNA extraction were collected and further processed for hybridization in custom-designed Affymetrix microarrays containing probes for three Aspergillus species, including A. niger. Triplicate batch fermentations of each of the four Aspergillus niger strains used, the wild type A. niger strain ATCC 1015 and three gene deletion mutants, were carried out using glucose or glycerol as carbon source, and transcriptome analysis was performed. Biomass from each batch cultivation was harvested in the exponential phase of growth and further processed for RNA extraction and hybridization on Affymetrix microarrays.
Project description:The goals of this study are to compare differential gene expressions for Penicillium oxalicum wild type strain (WT), and laeA knockout strain (ΔlaeA) in different development phase. The deletion of laeA downregulated genes involved in oxidation- reduction process, alkaloid metabolic process, and transmembrane transport. We find the expression levels of seven secondary metabolism gene clusters (totally 28 clusters) were silenced inΔlaeA. This study provides the information that laeA function are required in conidiation and hydrolase activity of P. oxalicum.
Project description:A proteome profile dataset of the different abundant protein between Metarhizium anisopliae UV-induced mutant( MaUV-HV stain) and its wild type parent strain