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Genome-wide characterization of light-regulated genes in Neurospora crassa

ABSTRACT: RNA-seq from Neurospora crassa at 5 time points of light induction, with 2 replicates for each, totalling 10 samples RNA-seq from Neurospora crassa at 5 time points of light induction, with 2 replicates for each, totalling 10 samples

ORGANISM(S): Neurospora crassa

SUBMITTER: Kristina Smith

PROVIDER: E-GEOD-53534 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide characterization of light-regulated genes in Neurospora crassa.

Wu Cheng C Yang Fei F Smith Kristina M KM Peterson Matthew M Dekhang Rigzin R Zhang Ying Y Zucker Jeremy J Bredeweg Erin L EL Mallappa Chandrashekara C Zhou Xiaoying X Lyubetskaya Anna A Townsend Jeffrey P JP Galagan James E JE Freitag Michael M Dunlap Jay C JC Bell-Pedersen Deborah D Sachs Matthew S MS

G3 (Bethesda, Md.) 20140721 9

The filamentous fungus Neurospora crassa responds to light in complex ways. To thoroughly study the transcriptional response of this organism to light, RNA-seq was used to analyze capped and polyadenylated mRNA prepared from mycelium grown for 24 hr in the dark and then exposed to light for 0 (control) 15, 60, 120, and 240 min. More than three-quarters of all defined protein coding genes (79%) were expressed in these cells. The increased sensitivity of RNA-seq compared with previous microarray s ...[more]

PMID: 25053707

Similar Datasets

Genome-wide characterization of light-regulated genes in Neurospora crassa

Project description:RNA-seq from Neurospora crassa at 5 time points of light induction, with 2 replicates for each, totalling 10 samples

2014-08-01 | GSE53534 | GEO

Transcriptional profiling of Neurospora crassaM-NM-^T mak-2reveals that mitogenactivated protein kinase MAK-2 participates in the phosphate signaling pathway

Project description:Transcriptional profiling of Neurospora crassa M-bM-^HM-^Fmak-2 strain grown under phosphate-shortage were compared the transcription profile of the control strain grown in both low- and high-Pi cultures. The filamentous fungus Neurospora crassa provides an excellent model system for the study of molecular responses to ambient signaling in eukaryotic microorganisms. Inorganic phosphate is an essential growth-limiting nutrient in nature and is crucial in genetic information. Numerous ambient signals activate the recruitment of mitogen-activated protein kinase (MAPK) cascades. Thus, in an attempt to identify genes involved in metabolic responses to exogenous phosphate sensing and in the functioning of a mitogen-activated protein kinase coding gene (mak-2) in N. crassa, we performed microarray experiments with the strain carrying the mak-2 gene knockout (M-NM-^Tmak-2) grown under phosphate-shortage by comparing the transcription profile to that of the control strain grown in both low- and high-phosphate cultures. Here we provide evidence that the mak-2 gene is an element of the adaptive response to extracellular Pi changes revealing novel aspects of phosphorus-sensing network in N. crassa. Neurospora crassa wild type strain St.L.74-OR23-1VA (FGSC #2489) cultivated in low and high Pi cultures and M-bM-^HM-^Fmak-2 (FGSC #11482) mutant strain cultivated in low Pi cultures.

2013-07-31 | E-GEOD-41806 | biostudies-arrayexpress

Transcriptional comparison of the filamentous fungus Neurospora crassa growing on three major monosaccharides D-glucose, D-xylose and L-arabinose

Project description:D-glucose, D-xylose and L-arabinose are three major monosaccharides in the plant cell wall. Complete utilization of all three sugars is still a bottleneck for second-generation cellulolytic bioethanol production, especially for L-arabinose. However, little is known about the gene expression profiles during L-arabinose utilization in fungi at genome-wide level and a comparison of the genome-wide fungal response to these three major monosaccharides has not yet been reported. To better understand the microbial response and utilization of L-arabinose for subsequent microbial engineering for co-fermentation all three sugars, we performed transcriptome analysis of N. crassa grown on L-arabinose, compared with that on D-xylose and D-glucose. RNA was extracted from cultures of N. carassa in early growth stage growing with D-glucose, L-arabinose or D-xylose as carbon source; duplicate cultures were sampled in some conditions.

2014-03-17 | E-GEOD-51091 | biostudies-arrayexpress

Identification of the transcriptional profile of the hyphal tip of Neurospora crassa

Project description:A colony of fungus is comprised of long, branching filamentous cells called hyphae. Genetic mechanisms underlying the development of hyphae are poorly understood. We sectioned hyphae of a model fungus, Neurospora crassa (pink bread mold), into six parts depending on the age of the cells; 1 hour, 3 hour, 9 hour, 15 hour, 21 hour and 27 hour old, respectively. This data submission reflects an RNAseq analysis of mRNA extracted from the 1 hour time-point. 1 mycelial mRNA profile of 1 hour growth (hyphal tip) from Neurospora crassa strain FGSC 2489, Data was generated using Illumina GAIIx.

2013-08-28 | E-GEOD-50205 | biostudies-arrayexpress

Gene expression levels in three Neurospora species reveal genes crucial for sexual reproduction in Neurospora tetrasperma

Project description:Many fungi form complex three-dimensional fruiting bodies, within which the meiotic machinery for sexual spore production has been considered to be largely conserved over evolutionary time. Indeed, much of what we know about meiosis in plant and animal taxa has been deeply informed by studies of meiosis in Saccharomyces and Neurospora. Nevertheless, the genetic basis of fruiting body development and its regulation in relation to meiosis in fungi is barely known, even within the best studied multicellular fungal model Neurospora crassa. We characterized morphological development and genome-wide transcriptomics in the closely related species Neurospora crassa, Neurospora tetrasperma, and Neurospora discreta, across eight stages of sexual development. Despite diverse life histories within the genus, all three species produce vase-shaped perithecia. Transcriptome sequencing provided gene expression levels of 2479 orthologous genes among all three species. Expression of key meiosis genes and sporulation genes, corresponded to developmental differences among these Neurospora species during sexual development. Screening N. crassa knockout crosses of genes selected for their expression differences across species, eight genes, whose functions were previously unknown, are found to be critical for the successful formation of perithecia. The absence of these genes in mutant crosses resulted in either no perithecium formation or in arrested development at an early stage. Our results provide insight into the genetic basis of Neurospora sexual reproduction, which is also of great importance with regard to other multicelluar ascomycetes, including fungal pathogens closely related to Neurospora in the Sordariomycetes, such as Fusarium spp, Magnaporthe oryzae, and Nectria haematococca mRNA were sampled and compared from eight time points across sexual reproduction in three Neurospora species

2014-12-12 | E-GEOD-60256 | biostudies-arrayexpress

Gene expression levels in three Neurospora species reveal genes crucial for sexual reproduction in Neurospora crassa

2014-12-12 | E-GEOD-60255 | biostudies-arrayexpress

A model of the BEM46 protein mode of action based on whole transcriptome analyzes in Neurospora crassa

Project description:We analyzed gene expression changes in BEM46 knock out and over expression strains of Neurospora crassa in different developmental stages in concrete germinating conidiospores and mycelia.

2021-07-08 | E-MTAB-10612 | biostudies-arrayexpress

Identification of direct target genes of the Neurospora crassa essential plant biomass deconstruction transcription factors CLR-1, CLR-2 and XLR-1 (ChIP-Seq)

Project description:abstract: The plant cell wall is composed of many complex polymers, and its deconstruction requires an equally complex orchestration of a wide array of enzymes. In Neurospora crassa, clr-1, clr-2 and xlr-1 have been identified as the key transcription factors involved in cell wall breakdown. In order to define their regulons, we performed ChIPseq upon these three transcription factors. CLR-1, CLR-2 and XLR-1 each bind to the most highly and differentially expressed gene populations, which include the cellulases for the CLRs and the hemicellulases for XLR-1. CLR-1 also bound to its regulon under non-inducing conditions; however, this did not translate into gene expression. Motif analysis of the bound genes revealed conserved DNA binding motifs, with the CLR-2 motif matching that of its closest yeast homolog, GAL4. Co-immunoprecipitation studies were able to show that CLR-1 and CLR-2 act as homodimers. Finally, we report on a conserved XLR-1 point mutation that is sufficient to drive hemicellulase expression under non-inducing conditions. Understanding how these transcription factors work in concert to break down plant biomass can inform decisions on how to best engineer future fungal strains for decreased enzyme costs. RNAseq and ChIPseq upon knockout mutants and sild type growing on various carbon sources to determin the role of the transcription factors: CLR-1, CLR-2, and XLR-1 in plant cell wall degradation

2015-09-01 | E-GEOD-68516 | biostudies-arrayexpress

Gene expression in a wild type strain (FGSC 2489) versus an Dime-2 strain (FGSC 17937) in Neurospora crassa during nitrogen starvation

Project description:The protein kinase Ime2 is known to have an important role in meiosis in the yeast Saccharomyces cerevisiae. However, the Neurospora crassa IME2 homolog functions in self/nonself recognition as well as in the development of fungal sexual structures called protoperithecia. In N. crassa, protoperithecia are induced upon nitrogen starvation. We were interested in gene expression differences between an ime-2 deletion strain and a wild type strain, and due to the role of ime-2 during sexual development, carried out these arrays on media that was lacking in nitrogen. There is one condition and three samples in this experiment (wild type and Dime-2 strains grown on minimal media lacking nitrogen), and dye swaps were performed

2012-02-18 | E-GEOD-35905 | biostudies-arrayexpress

Inducer Free Cellulase Secretion in Neurospora Crassa and comparitive analysis of cellulase induction in Aspergillus nidulans

Project description:Purpose: To explore conservation of gene regulation by the transcription factor clr-2/clrB in Neurospora crassa and Aspergillus nidulans Methods: mRNA from wild type and clr-2/clrB mutants were collected after a culture shift from sucrose/glucose to Avicel (crystaline cellulose) or no carbon media Results: We show that N. crassa and A. nidulans have similair global transcriptional responses to Avicel, with several hundred genes showing specific induction, though the induced genes are more specifically targeted at cellulose for N. crassa and more targeted at hemicellulose and pectin for A. nidulans. clr-2/clrB has a conserved fundamental function in cellulose induction, though the mechanism has diverged. Misexpression of clr-2 is sufficeint for inducer free cellulase secretion in N. crassa, but neither clrB or heterologous clr-2 is sufficient for inducer free cellulase secretion in A. nidulans. Conclusions: Our study demonstrates a conserved and essential role in cellulose utilization for the transcription factor clr-2 in filamentous ascomycetes and demonstrates that manipulation of clr-2 expression can be used to control cellulase expression in some species. Biological triplicates of liquid culture N. crassa and A. nidulans were harvested at 4 hours and 6 hours, respectively, after a switch to media of interest. Global mRNA abundances from liquid cultures of N. crassa and A. nidulans were measured by sequencing on the Illumina Genome Analyzer IIx and HiSeq2000 platforms.

2013-09-01 | E-GEOD-44100 | biostudies-arrayexpress

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