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Aspergillus nidulans

ABSTRACT: Utilizing Whole Genome Resequencing to Revitalize a Forward Genetic Screen for Mutants Deficient in the Production of Sterigmatocystin in Aspergillus nidulans

PROVIDER: PRJNA369071 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5210300.fastq.gz	Fastqsanger.gz
	SRR5210310.fastq.gz	Fastqsanger.gz
	SRR5210301.fastq.gz	Fastqsanger.gz
	SRR5210311.fastq.gz	Fastqsanger.gz
	SRR5210302.fastq.gz	Fastqsanger.gz

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Expression analysis of Aspergillus nidulans AN1599 (PbcR) overexpression mutant

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Project description:Investigation of whole genome gene expression level changes in Aspergillus nidulans OE::rsmA compared to wild-type RDIT9.32 (veA). A twelve array study using total RNA recovered from six separate cultures of Aspergillus nidulans wild-type RDIT9.32 (veA) and six separate cultures of Aspergillus nidulans overexpressing rsmA (restorer of secondary metabolism A), using custom-designed, four-plex arrays. The experiment was divided into two runs. In the first run, three biological replicates each of Aspergillus nidulans wild-type RDIT9.32 (veA) and Aspergillus nidulans carrying a plasmid overexpressing rsmA under the control of the gpdA promoter were assayed. In the second run, three biological replicates each of Aspergillus nidulans wild-type RDIT9.32 (veA) and Aspergillus nidulans overexpressing rsmA at the native locus under the control of the gpdA promoter were assayed.

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Expression analysis of Aspergillus nidulans AN1599 (PbcR) overexpression mutant

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Expression analysis of Aspergillus nidulans OE::rsmA

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Influence of International Space Station Conditions on Fungal ‘Omics’ in Aspergillus nidulans

Project description:This study presents the first global genomic, proteomic, and secondary metabolomic characterization of the filamentous fungus, Aspergillus nidulans, following growth on the International Space Station (ISS). The investigation included the A. nidulans wild-type and 3 mutant strains, two of which were genetically engineered to enhance secondary metabolite (SM) production. Whole genome sequencing (WGS) revealed that ISS conditions altered the A. nidulans genome in specific regions. In strain CW12001, which features overexpression of the SM global regulator laeA, ISS conditions induced a point mutation that resulted in the loss of the laeA stop codon. Differential expression of proteins involved in stress response, carbohydrate metabolic processes, and SM biosynthesis was observed. ISS conditions significantly decreased prenyl xanthone production in the wild-type strain and increased asperthecin production in LO1362 and CW12001, which are deficient in a major DNA repair mechanism. Together, these data provide valuable insights into the genetic and molecular adaptation mechanism of A. nidulans to the spacecraft environment and present many economic benefits.

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Expression data from Aspergillus nidulans grown under hypoxic condition.

Project description:Hypoxia imposes a challenge upon most of the filamentous fungi that require oxygen for proliferation. Here, we used whole genome DNA microarrays to investigate global transcriptional changes in Aspergillus nidulans gene expression after exposure to hypoxia followed by normoxia. Aeration affected the expression of 2,864 genes (27% of the total number of genes in the fungus), of which 50% were either induced or repressed under hypoxic conditions. Up-regulated genes included those for glycolysis, ethanol production, the tricarboxylic acid (TCA) cycle, and for the γ-aminobutyrate (GABA) shunt that bypasses two steps of the TCA cycle. Ethanol and lactate production under hypoxic conditions indicated that glucose was fermented to these compounds via the glycolytic pathway. Since the GABA shunt bypasses the NADH-generating reaction of the TCA cycle catalyzed by oxoglutarate dehydrogenase, hypoxic A. nidulans cells eliminated excess NADH. Hypoxia down-regulated some genes involved in transcription initiation by RNA polymerase II, and lowered the cellular mRNA content. These functions were resumed by reoxygenation, indicating that A. nidulans controls global transcription to adapt to a hypoxic environment. This study is the first to show that hypoxia elicits systematic transcriptional responses in A. nidulans.

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