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The meiotic transcriptome of the basidomycete fungus Coprinopsis cinerea (Coprinus cinereus)

ABSTRACT: Coprinopsis cinerea exhibits synchronised meiosis in the gill tissue of the fungus, which is 75% meiotic. The mushroom develops from a dikaryon, which contains two separate nuclei. These nucleifuse in the basidia (karyogamy). After karyogamy, the nuclei enter an extended meiotic prophase, in which pahcytene occurs at 6 hours post karyogamy (K+6). The tetrads produced by the second meiotic division are present 12 hours after karyogamy (K+12). To examine a comprehensive timecourse of meiosis in this organism, we took samples over a 15-hour period, 3 hours apart: K-3, K, K+3, K+6, K+9, K+12. Keywords: time course

ORGANISM(S): Coprinopsis cinerea

PROVIDER: GSE13731 | GEO | 2010/02/01

SECONDARY ACCESSION(S): PRJNA110793

REPOSITORIES: GEO

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The meiotic transcriptome of the basidomycete fungus Coprinopsis cinerea (Coprinus cinereus)

Project description:Coprinopsis cinerea exhibits synchronised meiosis in the gill tissue of the fungus, which is 75% meiotic. The mushroom develops from a dikaryon, which contains two separate nuclei. These nucleifuse in the basidia (karyogamy). After karyogamy, the nuclei enter an extended meiotic prophase, in which pahcytene occurs at 6 hours post karyogamy (K+6). The tetrads produced by the second meiotic division are present 12 hours after karyogamy (K+12). To examine a comprehensive timecourse of meiosis in this organism, we took samples over a 15-hour period, 3 hours apart: K-3, K, K+3, K+6, K+9, K+12. Keywords: time course Four biological replicate samples of each timepoint were taken. Labelled cDNA was hybridized to arrays in a 2 channel reaction. The reference sample was a mixture of timepoint samples.

2010-01-31 | E-GEOD-13731 | biostudies-arrayexpress

Comparison of gene expression during meiosis between wild-type and msh5-deficient strains of Coprinopsis cinerea

Project description:Meiosis was compared in msh5-22 and wild type strains of C. cinerea at 6 time points spanning the meiotic timecourse. Abstract: The basidiomycete Coprinopsis cinerea is well-suited to studies of meiosis because meiosis progresses synchronously in ten million cells within each mushroom cap. Approximately 20% of C. cinerea genes exhibit changing expression during meiosis, but meiosis and mushroom development happen concurrently so differentially expressed genes might not be directly involved in meiotic processes. Using microarrays, we examined global gene expression across a meiotic time course in two mutants in which meiosis arrests but mushrooms develop normally. Genes differentially expressed in the mutants compared to wild type are likely to be involved in meiosis and sporulation as opposed to mushroom development. In rad50-1, which arrests in late prophase, RNA abundance for a group of early meiotic genes remains high, while the expression of a group of late meiotic genes is never induced. In contrast, in msh5-22 (which fails to undergo pre-meiotic DNA replication), both early and late meiotic genes are underexpressed relative to wild type at late meiotic time points as the cells die. Genes that are differentially expressed in both mutants are particularly strong candidates for playing roles in meiosis and sporulation.

2012-05-15 | GSE37943 | GEO

Comparison of gene expression during meiosis between wild-type and rad50-deficient strains of Coprinopsis cinerea

Project description:Meiosis was compared in rad50-1 and wild type strains of C. cinerea at 6 time points spanning the meiotic timecourse. Abstract: The basidiomycete Coprinopsis cinerea is well-suited to studies of meiosis because meiosis progresses synchronously in ten million cells within each mushroom cap. Approximately 20% of C. cinerea genes exhibit changing expression during meiosis, but meiosis and mushroom development happen concurrently so differentially expressed genes might not be directly involved in meiotic processes. Using microarrays, we examined global gene expression across a meiotic time course in two mutants in which meiosis arrests but mushrooms develop normally. Genes differentially expressed in the mutants compared to wild type are likely to be involved in meiosis and sporulation as opposed to mushroom development. In rad50-1, which arrests in late prophase, RNA abundance for a group of early meiotic genes remains high, while the expression of a group of late meiotic genes is never induced. In contrast, in msh5-22 (which fails to undergo pre-meiotic DNA replication), both early and late meiotic genes are underexpressed relative to wild type at late meiotic time points as the cells die. Genes that are differentially expressed in both mutants are particularly strong candidates for playing roles in meiosis and sporulation.

2012-05-15 | GSE37942 | GEO

Comparison of gene expression during meiosis between wild-type and rad50-deficient strains of Coprinopsis cinerea

2012-05-14 | E-GEOD-37942 | biostudies-arrayexpress

Comparison of gene expression during meiosis between wild-type and msh5-deficient strains of Coprinopsis cinerea

2012-05-14 | E-GEOD-37943 | biostudies-arrayexpress

omparison of gene expression during meiosis between wild-type and deficient strains of Coprinopsis cinerea

Project description:This SuperSeries is composed of the following subset Series: GSE37942: Comparison of gene expression during meiosis between wild-type and rad50-deficient strains of Coprinopsis cinerea GSE37943: Comparison of gene expression during meiosis between wild-type and msh5-deficient strains of Coprinopsis cinerea Refer to individual Series

2012-05-14 | E-GEOD-37968 | biostudies-arrayexpress

Yeast meiotic proteome in wildtype versus kar4 mutant

Project description:The Kar4 protein has been identified as being a component of the yeast N6A mRNA methyltransferase, homologous to human METTL14. Mutations in KAR4 cause blocks in meiosis due to 1) reduced expression of Ime1p-induced transcripts, and 2) reduced levels of a subset of meiotic proteins, independent of their transcript levels. The reduced levels of the proteins are partially suppressed by increased levels of a translational regulator, Rim4. This proteomic study was aimed at identifying the spectrum of meiotic proteins affected by the absence of Kar4. The defect in Ime1p-depedent transcription was suppressed by over-expression of Ime1p. Proteins present in wildtype and kar4 deletion strains at two different times in meiosis were fractionated using reverse-phase chromatography and identified by MS/MS. Some 4068 proteins expressed during meiosis were identified. At 8 hours, 432 proteins were present at less than 50% the levels in kar4Δ/Δ compared to wild type. GO term analysis of the low proteins at 8 hours returned “meiotic cell cycle” as the sixth term with a P value of 7.74x10^-5. At 12 hours, 318 proteins were present at less than 50% the levels in kar4Δ/Δ relative to wild type. GO term analysis returned “meiotic cell cycle” as the second term with a P value less than 0.001. Proteins that were low at both 8 and 12 hours in kar4∆/∆ comprise proteins required for meiotic recombination and sporulation including Sps2p, Gas4p, Gmc2p, Mei5p, and Sae3p. Other meiotic proteins were expressed at or above wild type levels at 8 hours, but went down to lower than wild type levels at 12 hours, including Ecm11p, Hed1p, Spo11p, and Rec8p. In each case the levels of the proteins were reduced to much greater extents that can be explained by changes in transcript levels. Taken together these data suggest that Kar4 plays a role in the regulation of transcription and translation during yeast meiosis.

2023-08-22 | PXD043798 | Pride

Coprinopsis cinerea

Project description:The dikaryon formation (mating) transcriptome of the basidomycete fungus Coprinopsis cinerea (Coprinus cinereus)

| PRJNA124821 | ENA

WGS of a serie of Arabidopsis thaliana tetrad's products to study the role of RECQ4A, RECQ4B, FIGL1 and FANCM genes in the rate, nature and distribution of meiotic recombination products (CO and NCO)

Project description:In this study, two accessions of Arabidopsis thaliana (Columbia and Landsberg erecta) were crossed and tetrads were obtained using thanks to the the quartet mutation, which keeps the 4 haploid pollen grains from a single meiosis attached together. By fertilising a plant (of ecotype Columbia) with a single tetrad, then selecting seeds from siliques containing exactly four seeds and finally sequencing the 4 developed plants, we can access the complete history of meiotic recombination events occurring in a single male meiosis. Comparison of the genomic sequences (WGS) of the 4 plants in a tetrad makes it possible to identify meiotic COs and NCOS events in each tetrad thanks to the numerous polymorphisms specific to each of the parental genomes. The analysis of the WGS tetrads data consists of genotyping a series of SNV markers (differentiating Columbia and Landsberg) positioned on the five chromosomes for the 4 (M1, M2, M3, M4) individuals of a tetrad, representing the 4 chromatids of each chromosomes. A total of 20 tetrads, the F1 and the two parental accessions Columbia and Landsberg erecta were sequenced.

2024-12-02 | E-MTAB-14435 | biostudies-arrayexpress

Comparison of C. cinerea vegetative dikaryotic to vegetative monokaryotic mycelia

Project description:Coprinopsis cinerea vegetative dikaryotic mycelia compared to vegetative monokaryotic mycelia Vegetative dikaryon cDNA was comparitively hybridized with monokaryotic vegetative cDNA. Labelled cDNA was hybridized to arrays in a 2 channel reaction.

2010-05-15 | E-GEOD-18540 | biostudies-arrayexpress

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