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Auxin mediated gene expression in WT, arf7, arf19 and arf7 arf19 mutants

ABSTRACT: RNA samples were extracted from liquid cultured seedlings treated with or without auxin (5µM IAA) for 2 h. Lines used for this study: Columbia wild-type nph4-1(arf7) single mutant arf19-1 single mutant nph4-1 arf19-1 double mutant Treatment: Control (EtOH) Auxin treated (5µM IAA) Keywords = Auxin Keywords = Auxin response factor Keywords: parallel sample

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE627 | GEO | 2005/10/19

SECONDARY ACCESSION(S): PRJNA89753

REPOSITORIES: GEO

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Auxin mediated gene expression in WT, arf7, arf19 and arf7 arf19 mutants

Project description:RNA samples were extracted from liquid cultured seedlings treated with or without auxin (5ÂµM IAA) for 2 h. Lines used for this study: Columbia wild-type nph4-1(arf7) single mutant arf19-1 single mutant nph4-1 arf19-1 double mutant Treatment: Control (EtOH) Auxin treated (5ÂµM IAA) Keywords = Auxin Keywords = Auxin response factor Keywords: parallel sample

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Project description:The goal of this study is to clarify the function of ARF7 in the pathway of auxin inducing lateral root development. We isolated total RNA from the roots of 8-day-old Col-0 and arf7 seedlings. New genes act downstream of ARF7 after responding to auxin treatment, during the lateral root formation, are discovered.

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Project description:Lateral roots (LRs) are formed post-embryonically and contribute to root architecture formation in vascular plants. LATERAL ORGAN BOUNDARIES-DOMAIN 16 (LBD16) is a key transcription factor to initiate LR formation. LBD16 functions downstream of AUXIN RESPONSE FACTOR 7 (ARF7) and ARF19, and overexpression of LBD16 partially restores LR formation in the absence of ARF7 and ARF19. To identify downstream targets of LBD16, we engineered a transgenic line with inducible LBD16 activity by overexpressing a fusion protein of LBD16 and rat glucocorticoid receptor (GR) in arf7 arf19 mutant. Here we identified primary response genes of LBD16 from transcriptome analysis of 35Spro:LBD16:GR arf7 arf19 line.

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Auxin-mediated gene expression

Project description:Global gene expression data from 7-day old light-grown liquid cultured seedlings treated with or without auxin (5µM IAA) for 2 h. This SuperSeries is composed of the SubSeries listed below.

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Project description:Auxin mediated gene expression in WT, arf7, arf19 and arf7 arf19 mutants

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Auxin mediated gene expression in WT and arf2-6 mutant

Project description:Global gene expression data from 7-day old light-grown liquid cultured seedlings treated with or without auxin (5µM IAA) for 2 h. Columbia (WT) and Auxin response factor 2 (ARF2) T-DNA insertion mutant (arf2-6 ) were used for this study. Each experimental condition has three true replicates for a total of 12 hybridizations. Data analysis: Affymetrix GeneChip Microarray Suite version 5.0 software was used to obtain signal values for individual genes. The data files containing the probe level intensities (cell files) were used for background correction and normalization using the log2 scale robust multi-array analysis (RMA) procedure (Irizarry et al., 2003). The “R” environment (Ihaka and Gentleman, 1996) was used for running the RMA program. Data analysis and statistical extraction were performed using log2 converted expression intensity data within Microsoft Excel 98. Based on preliminary analysis, a hybridization signal less than 5.64385619 (= log2 50) was considered as background; all signals less than 5.64385619 were converted to 5.64385619 prior to further analysis. Keywords = Auxin Keywords = Auxin response factor Keywords: other

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