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Arabidopsis thaliana

ABSTRACT: Expression data of Col:LUC Arabidopsis treated with antimycin A (AA) in the presence or absence of a synthetic auxin analogue

OTHER RELATED OMICS DATASETS IN: E-GEOD-57140

PROVIDER: PRJNA245666 | ENA |

REPOSITORIES: ENA

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Expression data of Col:LUC Arabidopsis treated with antimycin A (AA) in the presence or absence of a synthetic auxin analogue

2014-06-01 | GSE57140 | GEO

Expression data of Col:LUC Arabidopsis treated with antimycin A (AA) in the presence or absence of a synthetic auxin analogue

Project description:Mitochondrial stress stimuli such as AA caused a transient suppression of auxin signaling and conversely, auxin treatment represses a part of the response to AA treatment. Expression data of Col:LUC Arabidopsis treated with antimycin A (AA) in the presence or absence of a synthetic auxin analogue Total RNA extraction was carried out on 80 mg of Col:LUC Arabidopsis seedlings grown on B5 media for 10 days and transferred to fresh plates, containing either B5 media or B5 media supplemented with 4.5 µM NAA for an additional 3 days. Seedlings were treated with 50 µM AA for 3 hours.

2014-06-01 | E-GEOD-57140 | biostudies-arrayexpress

E-GEOD-57140

Project description:Expression data of Col:LUC Arabidopsis treated with antimycin A (AA) in the presence or absence of a synthetic auxin analogue

2015-05-06 | E-GEOD-57140 | ExpressionAtlas

Autophagy role during auxin-induced rapid proteome remodelling

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Project description:After analysing auxin metabolism in auxin dependent tobacco BY-2 cell line grown in presence or absence of synthetic auxin 2,4-D we found that both conditions were similarly characterized by very low levels of endogenous indole-3-acetic acid (IAA) and its metabolites. However, metabolic profiling after exogenous application of IAA uncovered that the concentration of N-(2-oxindole-3-acetyl)-L-aspartic acid (oxIAA-Asp), the most abundantly formed auxin metabolite in the control culture, dramatically decreased in auxin-starved conditions. To describe the molecular mechanism behind this regulation, we analysed transcriptome and proteome changes caused by auxin starvation. While no changes in the expression of auxin biosynthetic machinery were observed, many genes related to auxin conjugation and degradation showed differential expression. Selected putative auxin glycosylating enzymes as well as members of the Gretchen Hagen 3 gene family involved in auxin amino acid conjugation showed both up- and down-regulation. Contrarily to that, all tobacco homologs of Arabidopsis thaliana DIOXYGENASE FOR AUXIN OXIDATION 1 (DAO1), known to be responsible for the formation of oxIAA from IAA, showed significant downregulation at both transcript and protein levels.

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Inhibition of the mitochondrial electron transport chain by antimycin A in Arabidopsis thaliana

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Expression analysis of picloram responsive genes preceding cell elongation in Arabidopsis hypocotyls.

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Inhibition of the mitochondrial electron transport chain by antimycin A in Arabidopsis thaliana

Project description:Plant mitochondria signal to the nucleus leading to altered transcription of nuclear genes by a process called mitochondrial retrograde regulation (MRR). MRR is implicated in metabolic homeostasis and responses to stress conditions. Transcriptional consequences on nuclear gene expression of mitochondrial perturbations were examined by a microarray analyses. Expression of 1316 was altered by antimycin A (AA) inhibition of the cytochrome respiratory pathway in leaves of soil grown Arabidopsis plants in the dark for 6 hours. Functional gene category (MapMan) and cluster analyses showed that genes with expression levels affected by perturbation from AA or MFA inhibition were most similarly affected by biotic stresses such as pathogens, not oxidative stresses. Overall, the data provide further evidence for the presence of mtROS-independent MRR signaling, and support the proposed involvement of MRR and mitochondrial function in plant responses to biotic stress. Three independent (bio-replicate) experiments were done using three independent plant samples and independent chemicals in the treatments. For each, approximately 30 plants were used for the treated sample and about 30 plants were used as the control treated sample. Plants were treated with 20 uM antimycin A in 0.01% Tween 20 and incubated in the dark at room temperature (25C) for 6 hours. RNA was isolated from the inhibitor treated and control treated plants and used for microarray experiments. For each independent (bio-replicate) experiment, two microarrays were utilized using Cy3 and Cy5 dye-labeled samples and dye swapping was incorporated- so, minimum of 2 microarrays for each of 3 independent experiments (6 microarrays). In addition, two of the microarrays were duplicated so that a total of 8 slides were used in the data analyses.

2013-01-01 | E-GEOD-29204 | biostudies-arrayexpress

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