GEO DataSets

(Submitter supplied) Biofilm formation by microorganisms is a major cause of recurring infections and removal of biofilms has proven to be extremely difficult given their inherent drug resistance. Understanding the biological processes that underlie biofilm formation is thus extremely important and could lead to the development of more effective drug therapies, resulting in better infection outcomes. Using the yeast S. cerevisiae as a biofilm model, overexpression screens identified DIG1, SFL1, HEK2, TOS8, SAN1 and ROF1/YHR177W as regulators of biofilm formation. Subsequent RNA-seq analysis of biofilm and non-biofilm forming strains revealed that all of the overexpression strains, other than DIG1 and TOS8, were adopting a single differential expression profile, although induced to varying degrees. TOS8 adopted a separate profile, while the expression profile of DIG1 reflected the common pattern seen in most of the strains, plus substantial DIG1-specific expression changes. We interpret the existence of the common transcriptional pattern seen across multiple, unrelated overexpression strains as reflecting a real transcriptional state, that the yeast cell can access through regulatory signaling mechanisms, allowing an adaptive morphological change between biofilm-forming and non-biofilm states.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13821

20 Samples

Download data: TXT

(Submitter supplied) Purpose:To dissect the mechanisms underlying altered gene expression in aneuploids, we measured transcript abundance in colonies of haploid yeast strain F45 and derived strains, including strains disomic for chromosomes XV and XVI, using RNA-seq. F45 colonies display complex “fluffy” morphologies, while the disomic colonies are smooth, resembling laboratory strains Methods: RNA-seq analysis was carried out on RNA isolated from fully developed S. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL19756 GPL13821

35 Samples

Download data: TXT

(Submitter supplied) Wild yeast and many clinical strains form complex, biofilm colonies, providing protection from desiccation, drugs and other stresses. Few transcriptomic studies have focused on sub-surface invasive “roots” due to the challenges of cell isolation from agar and subpopulation cross-contamination. Here we present, a first transcriptomic analysis via RNA sequencing of root and aerial cells, separated by a novel method. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17342

6 Samples

Download data: TXT

(Submitter supplied) The Poly(A)-Tail focused RNA-seq, or PAT-seq approach, is an affordable and efficient tool for the measure of 3’UTR dynamics. We show here that PAT-seq returns (i) digital gene expression, (ii) polyadenylation site usage within and between samples, including alternative adenylation, and (iii) the polyadenylation-state the transcriptome. PAT-seq differs from previous 3’ focused RNA-seq methods in that it strictly depends on native 3’ adenylation within total RNA samples and thus removes the need for ribosome depletion and, that the full native poly(A)-tail is included in the sequencing libraries. more...

Organism:

Saccharomyces cerevisiae

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL18085

13 Samples

Download data: CSV

(Submitter supplied) In this study, we constructed three isogenic strains of S96 yrr1Δ background (its native YRR1 gene was knocked out) carrying three different YRR1 alleles, YRR1_S96, YRR1_YJM789, YRR1_S96-I775E, respectively. We then conducted chromatin immuno-precipitation followed by high-throughput sequencing (ChIP-Seq) for Yrr1 protein on the three strains grown in Yeast Peptone Dextrose medium (YPD) and YPD + 4NQO.

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13821

24 Samples

Download data: XLSX

(Submitter supplied) In this study, we constructed three isogenic strains of S96 yrr1Δ background (its native YRR1 gene was knocked out) carrying three different YRR1 alleles, YRR1_S96, YRR1_YJM789 and YRR1_S96-I775E, respectively. We then conducted RNA deep sequencing (RNA-Seq) on the three strains grown in Yeast Peptone Dextrose medium (YPD), YPD + 4NQO and Yeast Peptone glycerol medium (YPglycerol).

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17143

18 Samples

Download data: XLSX

(Submitter supplied) Cellular processes are subject to variability, or noise, yet mechanisms that promote cell-to-cell uniformity are poorly understood. We have identified such a role for Dig1, a redundant (with Dig2) MAPK-responsive inhibitor of the S. cerevisiae mating pathway transcription factor Ste12. Cells lacking Dig1, but not Dig2, exhibited increased variability in outputs of the mating pathway. dig1∆ mutants also displayed a Ste12-dependent defect in growth in the absence of mating pheromone and a quantitative defect in the process of mating, itself. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL4130

16 Samples

Download data: GPR

(Submitter supplied) Candida albicans can stochastically switch between two phenotypes, white and opaque. Opaque cells are the sexually competent form of C. albicans and therefore undergo efficient polarized growth and mating in the presence of pheromone. In contrast, white cells cannot mate, but are induced - under a specialized set of conditions - to form biofilms in response to pheromone. In this work, we compare the genetic regulation of such "pheromone-stimulated" biofilms with that of "conventional" C. more...

Organism:

Candida albicans

Type:

Expression profiling by array

Platform:

GPL16385

17 Samples

Download data: GPR

(Submitter supplied) The Saccharomyces cerevisiae MYO1 gene encodes the myosin type II heavy chain (Myo1p), a protein required for normal cytokinesis in budding yeast. Deletion of the MYO1 gene prevents actomyosin-driven cytokinesis thereby activating an alternative mechanism that involves the synthesis of a remedial septum. Myo1p deficiency in yeast (myo1) also causes the formation of attached cells, abnormal budding patterns, formation of enlarged and elongated cells, increased osmotic sensitivity, delocalized chitin deposition, and increased chitin synthesis. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL884

6 Samples

Download data: TXT

(Submitter supplied) BY4741（Δyrr1）exhibited better vanillin tolerance to vanillin than that of wildtype strain. To assess transcriptional differences between these two strains. Yrr1p is a transcriptional factors which activated genes related to multidrug resistance.The transcriptome of BY4741 and BY4741（Δyrr1）under vanillin stress or vanillin free conditions were conducted,respectively

Organism:

Saccharomyces cerevisiae BY4741

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22674

8 Samples

Download data: TXT

(Submitter supplied) Cells respond to environmental fluctuations by regulating multiple transcriptional programs. This response can be studied by measuring the effect of environmental changes on the transcriptome or the proteome of the cell at the end of the response. However, the dynamics of the response reflect working of the regulatory mechanisms in action. Here we utilized a fluorescent stress reporter gene to track the dynamics of protein production in yeast responding to environmental stress. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19756

144 Samples

Download data: CSV

(Submitter supplied) Candida albicans is an opportunistic fungal pathogen that can infect oral mucosal surfaces despite being under continuous flow from saliva. Previous studies have shown that under specific conditions C. albicans will form microcolonies that more closely resemble the biofilms formed in vivo than standard in vitro biofilm models. However, very little is known about these microcolonies, particularly genomic differences between these specialized biofilm structures and the traditional in vitro biofilms. more...

Organism:

Candida albicans

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19036

6 Samples

Download data: DIFF

(Submitter supplied) The yeast Saccharomyces cerevisiae is able to adapt and in situ detoxify lignocellulose derived inhibitors such as furfural and HMF. The length of lag phase for cell growth in response to the inhibitor challenge has been used to measure tolerance of strain performance. Mechanisms of yeast tolerance at the genome level remain unknown. Using systems biology approache, this study investigated comparative transcriptome profiling, metabolic profiling, cell growth response and gene regulatory interactions of yeast strains and selective gene deletion mutations in response to HMF challenges during the lag phase of growth. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL10684

14 Samples

Download data: GPR

(Submitter supplied) The microarrays experiments of three biological and one technical replicates were performed in YJR12 (wt) and YJR13 (myo1∆) strains. YJR12 (wild type) and YJR13 (myo1∆) strains were obtained as haploid segregants from a cross between YJR6 (myo1::HIS5 strain) and BY4741 (obtained from ATTC). Cultures were grown overnight at 26ºC to an optical density between 0.5-0.8 (OD600) in complete synthetic media (CSM, 2% glucose, 1X Nitrogen base) with continuous shaking at 200 rpm. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL7542

4 Samples

Download data: TXT

(Submitter supplied) The purpose of this study was to compare the global, growth phase-dependent transcriptional profiles of two isolates of Staphylococcus aureus. One isolate is a prototypic laboratory strain named RN6390, and has been used frequently as a model organism for study of staphylococcal physiology and virulence. However, recent studies indicate that RN6390 is not, in general, genotypically or phenotypically representative of clinical isolates of Staphyloccos aureus. more...

Organism:

Staphylococcus aureus

Type:

Expression profiling by array

Dataset:

GDS2370

Platform:

GPL4047

16 Samples

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Analysis of Staphylococcus aureus UAMS-1 virulent clinical isolate and its isogenic agr and sarA mutants. agr and sarA genes encode global regulators important in virulence factor production and biofilm formation. Results provide insight into the differences between clinical and laboratory strains.

Organism:

Staphylococcus aureus

Type:

Expression profiling by array, count, 2 development stage, 4 genotype/variation, 2 strain sets

Platform:

GPL4047

Series:

GSE5466

16 Samples

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(Submitter supplied) Expression analysis of BY4716(isogenic to S288c) and a wild isolate collected by R. Mortimer. Each strain was grown in culture 6 independent times and RNA from each culture was isolated. Each of these RNA samples was subjected to a dye-swap pair of arrays (except the "RM11" sample, which only got one array). All arrays used the same pool of reference BY4716 sample. In sample titles, "BY" alone signifies the reference sample and all other strings represent independent cultures. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Datasets:

GDS93 GDS94

Platform:

GPL118

23 Samples

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(Submitter supplied) Expression analysis of F1 haploid segregants from a cross between BY4716 (isogenic to S288c) and a wild isolate collected by R. Mortimer. Each segregant sample was subjected to a dye-swap pair of arrays. All arrays used the same pool of reference BY4716 sample. In sample titles, "BY" alone signifies the reference sample and all other strings represent segregants. All sample titles are of the form S1-S2. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Datasets:

GDS91 GDS92

Platform:

GPL118

80 Samples

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Genetic linkage analysis of global expression levels in a cross between two budding yeast strains. Identification of cis-acting and trans-acting loci that modulate a total of 570 genes.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, log ratio, 2 strain sets

Platform:

GPL118

Series:

GSE38

11 Samples

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Genetic linkage analysis of global expression levels in a cross between two budding yeast strains. Identification of cis-acting and trans-acting loci that modulate a total of 570 genes.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, log ratio, 2 strain sets

Platform:

GPL118

Series:

GSE38

12 Samples

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