GEO DataSets

(Submitter supplied) Arabidopsis is a suitable system for testing the hypothesis that duplicate genes accelerate evolution of expression diversity among species diverged from shared whole genome duplications (WGDs) and recurrent events of WGD. In Arabidopsis, at least 9 species split after WGD of the common ancestor and new allotetraploids were formed in nature and can be resynthesized between closely related species. Using genomic and gene expression microarrays, we detected WGD duplicate and single-copy genes preserved in A.thaliana and A.arenosa in addition to change of gene expression levels among those species. more...

Organism:

Arabidopsis suecica; Arabidopsis thaliana; Arabidopsis arenosa

Type:

Expression profiling by array

Platform:

GPL7498

1 Sample

Download data: GPR

(Submitter supplied) Polyploidy or whole genome duplication (WGD) provides raw genetic materials for sequence and expression evolution of duplicate genes. However, the mode and tempo of expression divergence between WGD duplicate genes in closely relates species and recurrent allopolyploids are poorly understood. Arabidopsis is a suitable system for testing the hypothesis that duplicate genes increase expression diversity and regulatory networks. more...

Organism:

Arabidopsis thaliana; Arabidopsis arenosa; Arabidopsis suecica

Type:

Expression profiling by array; Genome variation profiling by array

5 related Platforms

5 Samples

Download data: GPR, TAR

(Submitter supplied) The 70-mer oligo was designed from the 3'-end of 26,090 annotated genes. Every 70-mer oligo is spotted once on each slide. Protocol: This oligonucleotide array is produced from the Operon Version 1.0 Array-Ready Oligo set (AROS). The 70-mer oligo was designed from the 3'-end of 26,090 annotated genes. Every 70-mer oligo is spotted once on each slide.

Organism:

Arabidopsis thaliana

3 Series

18 Samples

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(Submitter supplied) MicroRNAs (miRNAs) and small interfering RNAs (siRNAs) are produced in diverse species and control gene expression and epigenetic regulation. Although physiological and developmental roles of miRNAs and siRNAs have been extensively studied in plants and animals, expression diversity and evolution of miRNAs and siRNAs in closely related species are poorly understood. Here we report comprehensive analyses of miRNA expression and siRNA distribution in two closely related species (Arabidopsis thaliana and A. more...

Organism:

Arabidopsis arenosa x Arabidopsis thaliana; Arabidopsis thaliana; Arabidopsis arenosa; Arabidopsis suecica

Type:

Non-coding RNA profiling by high throughput sequencing; Non-coding RNA profiling by array

5 related Platforms

58 Samples

Download data: FNA, QUAL, TXT

(Submitter supplied) Changes in genome structure and gene expression have been documented in both resynthesized and natural allopolyploids that contain two or more divergent genomes. The underlying mechanisms for rapid and stochastic changes in gene expression are unknown. Arabidopsis suecica is a natural allotetraploid derived from the extant species A. thaliana and A. arenosa. Here we report that reduced DNA methylation in met1-RNAi A. more...

Organism:

Arabidopsis thaliana; Arabidopsis suecica

Type:

Expression profiling by array

Platform:

GPL5680

1 Sample

Download data: GPR

(Submitter supplied) This oligonucleotide array is produced from the Operon Version 1.0 Array-Ready Oligo set (AROS). The 70-mer oligo was designed from the 3'-end of 26,090 annotated genes. Every 70-mer oligo is spotted once on each slide.

Organism:

Arabidopsis thaliana

1 Series

1 Sample

Download data

(Submitter supplied) This oligonucleotide array is produced from the Operon Version 1.0 Array-Ready Oligo set (AROS). The 70-mer oligo was designed from the 3'-end of 26,090 annotated genes. Every 70-mer oligo is spotted once on each slide.

Organism:

Arabidopsis thaliana

1 Series

1 Sample

Download data

(Submitter supplied) 11199 probes were detected to be differentially expressed between leaves of Arabidopsis thaliana and Arabidopsis arenosa Protocol: This oligonucleotide array is produced from the Operon Version 1.0 Array-Ready Oligo set (AROS). The 70-mer oligo was designed from the 3'-end of 26,090 annotated genes. Every 70-mer oligo is spotted once on each slide.

Organism:

Arabidopsis thaliana

1 Series

1 Sample

Download data

(Submitter supplied) Gene-expression divergence between species shapes morphological evolution, but the molecular basis is largely unknown. Here we show cis- and trans-regulatory elements and chromatin modifications on gene-expression diversity in genetically tractable Arabidopsis allotetraploids. In Arabidopsis thaliana and Arabidopsis arenosa, both cis and trans with predominant cis-regulatory effects mediate gene-expression divergence. more...

Organism:

Arabidopsis thaliana; Arabidopsis arenosa; Arabidopsis suecica; Arabidopsis arenosa x Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

4 related Platforms

5 Samples

Download data: TXT

(Submitter supplied) Genome-wide analysis of gene expression has documented differential gene expression between closely related species in plants or animals and nonadditive gene expression in hybrids and allopolyploids compared to the parents. In Arabidopsis, 15-43% of genes are expressed differently between the related species, A. thaliana and A. arenosa, and the majority of them are nonadditvely expressed (differently from mid-parent value) in allotetraploids relative to the parents. more...

Organism:

Arabidopsis thaliana; Arabidopsis

Type:

Expression profiling by array

Platform:

GPL11298

8 Samples

Download data: GPR

(Submitter supplied) We anlalyzed gene expession using an Arabidopsis 26K 70mer spotted microarray Differential expression was tested using two ANOVA models: 1) a per-gene variance ANOVA, and 2) a common variance ANOVA

Organism:

Arabidopsis thaliana; Brassica napus; Brassica sp.; Brassica oleracea; Brassica rapa

Type:

Expression profiling by array

Platform:

GPL7536

7 Samples

Download data: GPR

(Submitter supplied) Polyploidy provides evolutionary and morphological novelties in many plants and some animals. However, the role of genome dosage and composition in gene expression changes remains poorly understood. Here, we generated a series of resynthesized Arabidopsis tetraploids that contain 0-4 copies of Arabidopsis thaliana and Arabidopsis arenosa genomes and investigated ploidy and hybridity effects on gene expression. more...

Organism:

Arabidopsis suecica; Arabidopsis thaliana x Arabidopsis arenosa

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL17709 GPL17708 GPL16380

6 Samples

Download data: TXT

(Submitter supplied) We analyzed allele-specific expression (ASE) in leaf and floral tissues of F1 interspecific hybrids generated between the two closely related species of Arabidopsis thaliana and Arabidopsis lyrata with a whole-genome SNP tiling array (AtSNPtile1).

Organism:

Arabidopsis thaliana x Arabidopsis lyrata; Arabidopsis thaliana; Arabidopsis lyrata

Type:

Expression profiling by SNP array; Genome variation profiling by SNP array

Platform:

GPL13483

24 Samples

Download data: CEL

(Submitter supplied) Gene copy number variation (CNV) is a form of genetic polymorphism that contributes significantly to genome size and function but remains poorly characterized due to technological limitations. Inter-specific comparisons of CNVs in recently diverged plant species are crucial to uncover selection patterns underlying adaptation of a species to stressful environments. Especially given that gene amplifications have long been implicated in emergence of species-specific traits, we conducted a genome-wide survey to identify species-specific gene copy number expansions and deletions in the model extremophile species - Arabidopsis halleri that has diverged in evolutionarily recent time from Arabidopsis thaliana. more...

Organism:

Arabidopsis lyrata; Arabidopsis halleri; Arabidopsis thaliana

Type:

Genome variation profiling by array

Platform:

GPL198

6 Samples

Download data: CEL

(Submitter supplied) The aim of this study was to analyze the impact of autotetraploidy on gene expression in Arabidopsis thaliana by comparing diploid versus tetraploid transcriptomes. In particular, this included the comparison of the transcriptome of different tetraploid A. thaliana ecotypes (Col-0 vs. Ler-0). The study was extended to address further aspects. One was the comparison of the transcriptomes in subsequent generations. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

48 Samples

Download data: TXT

(Submitter supplied) We compared the genome-wide expression profiles of two yeast species (S. cerevisiae and S. paradoxus) using a two-species microarray that contain species-specific probes and can thus measure the expression levels of the two species simultaneosly. In Addition, we used the array to measure expression levels of the interspecific hybrid of these yeast species, while discriminating between the alleles that correspond to the two parental species. more...

Organism:

Saccharomyces paradoxus; Saccharomyces cerevisiae; Saccharomyces cerevisiae x Saccharomyces paradoxus

Type:

Expression profiling by array

Platform:

GPL8157

20 Samples

Download data: ZIP

(Submitter supplied) We compare gene expression among petals tissues in 5 species of natural allotetraploid and F1 hybrid cottons to the antecedent conditions existing prior to genome merger and duplication, thus revealing the effects of genome merger and polyploidy on gene expression evolution

Organism:

Gossypium; Gossypium hirsutum; Gossypium arboreum; Gossypium mustelinum; Gossypium tomentosum; Gossypium barbadense; Gossypium raimondii; Gossypium darwinii

Type:

Expression profiling by array

Platform:

GPL6989

27 Samples

Download data: PAIR

(Submitter supplied) Cytosine DNA methylation is important for transposon silencing and epigenetic regulation of endogenous genes. Using a single-chip tiling microarray with 35 bp resolution, we carried out the first unbiased mapping of DNA methylation in the entire genome of the flowering plant Arabidopsis thaliana.Pericentromeric heterochromatin, repetitive sequences and regions producing small interfering RNAs were heavily methylated. more...

Organism:

Arabidopsis thaliana

Type:

Methylation profiling by genome tiling array

Platform:

GPL1979

24 Samples

Download data: CEL

(Submitter supplied) Cytosine DNA methylation is important for transposon silencing and epigenetic regulation of endogenous genes. Using a single-chip tiling microarray with 35 bp resolution, we carried out the first unbiased mapping of DNA methylation in the entire genome of the flowering plant Arabidopsis thaliana.Pericentromeric heterochromatin, repetitive sequences and regions producing small interfering RNAs were heavily methylated. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by genome tiling array; Methylation profiling by array

Platforms:

GPL1980 GPL1979

18 Samples

Download data: CEL

(Submitter supplied) Ecotype-specific differences in genome methylation were assayed in Arabidopsis Col and Ler variations using genomic tiling microarrays. Comparative genome hybridization was also performed so that the contribution of ecotype-specific amplifications and deletions could be estimated and integrated into the analysis of differential DNA methylation. Keywords: methylation analysis and comparative genome hybridization

Organism:

Arabidopsis thaliana

Type:

Genome variation profiling by genome tiling array; Methylation profiling by array

Platform:

GPL5116

3 Samples

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