txid45249[Organism] - GEO DataSets

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Select item 2000507151.

Genome-Wide Dosage-Dependent and -Independent Regulation Contributes to Gene Expression and Evolutionary Novelty in Plant Polyploids

(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:: GPL16380 GPL17709 GPL17708
6 Samples

Download data: TXT

Series

Accession:: GSE50715

ID:: 200050715

PubMed Full text in PMC Similar studies SRA Run Selector

Select item 2000296872.

Cis- and trans- regulatory divergence between progenitor species determines gene-expression novelty in Arabidopsis allopolyploids

(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

Series

Accession:: GSE29687

ID:: 200029687

PubMed Full text in PMC Similar studies SRA Run Selector

Select item 2000154433.

Small RNAs serve as a genetic buffer against genomic shock in Arabidopsis interspecific hybrids and allopolyploids

(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

Series

Accession:: GSE15443

ID:: 200015443

PubMed Full text in PMC Similar studies Analyze with GEO2R

Select item 2000134684.

Gene expression change in natural allotetraploid, A.suecica

(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 thaliana; Arabidopsis arenosa; Arabidopsis suecica

Type:: Expression profiling by array

Platform:: GPL7498
1 Sample

Download data: GPR

Series

Accession:: GSE13468

ID:: 200013468

PubMed Full text in PMC Similar studies Analyze with GEO2R

Select item 2000095135.

Duplicate genes increase expression diversity in closely related species and allopolyploids

(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

Series

Accession:: GSE9513

ID:: 200009513

PubMed Full text in PMC Similar studies Analyze with GEO2R

Select item 2000095126.

Reduced DNA methylation in Arabidopsis allopolyploids induces genome-specific changes in gene expression

(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...