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E-GEOD-35580

ABSTRACT: Transcription profiling by array of four distinct tissues of Arabidopsis root and whole root treated with (auxin) indole-3-acetic acid against mock-treated controls

PROVIDER: E-GEOD-35580 | ExpressionAtlas | 2015-04-02

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-35580-analysis-methods.tsv	Tabular
	E-GEOD-35580-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-35580-configuration.xml	Xml
	E-GEOD-35580-percentile-ranks.tsv	Tabular
	E-GEOD-35580.condensed-sdrf.tsv	Tabular

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Expression data from Arabidopsis wild type and ibr1 ibr3 ibr10 triple mutant seedlings root tip segments treated with indole-3-butyric acid (IBA)

2015-05-12 | GSE59426 | GEO

Cell type-specific auxin responses in the Arabidopsis thaliana root

Project description:We performed an analysis of transcriptomic responses to auxin within four distinct tissues of the Arabidopsis thaliana root. This high-resolution dataset shows how different cell types are predisposed to react to auxin with discrete transcriptional responses. The sensitivity provided by the analysis lies in the ability to detect cell-type specific responses diluted in organ-level analyses. This dataset provides a novel resource to examine how auxin, a widespread signal in plant development, influences differentiation and patterning in the plant through tissue-specific transcriptional regulation. To analyze the effect of auxin in separate spatial domains of the root, early transcriptional changes in response to auxin treatment were assayed by means of fluorescence activated cell sorting (FACS) and microarray analysis in four tissues of the Arabidopsis root (wild type Col-0). The samples covered inner and outer as well as proximal and distal cell populations; including the stele (reporter line pWOL::GFP), xylem-pole (xp) pericycle (enhancer trap line E3754), epidermis/lateral root cap (reporter line pWER::GFP) and columella (enhancer trap line PET111). One-week-old seedlings of the individual lines were treated with auxin (two hours, 5µM indole-3-acetic acid [IAA]) or mock treated, after which roots were harvested and cells were dissociated by cell wall digestion (1 hour; including 5uM IAA) . GFP-positive cells were sorted and used for microarray transcriptome analysis (as in Bargmann and Birnbaum, Plant Phys. 2010). For comparison, transcriptional responses to auxin were also assayed in intact (undigested) roots.

2013-08-06 | E-GEOD-35580 | biostudies-arrayexpress

Arabidopsis thaliana: auxin-treated seedlings versus control seedlings

2012-05-10 | GSE37899 | GEO

Arabidopsis thaliana: auxin-treated seedlings versus control seedlings

Project description:Transcriptional profiling of Arabidopsis thaliana seedlings treated with auxin (indole-3-acetic acid), highlighting to the physiological function of auxin by observing early response of gene expressions in Arabidopsis seedlings. Two-condition experiment, auxin-treated seedlings vs. control seedlings. Biological replicates:2 control replicates, 2 auxin-treated.

2012-05-09 | E-GEOD-37899 | biostudies-arrayexpress

Expression data from Arabidopsis wild type and ibr1 ibr3 ibr10 triple mutant seedlings root tip segments treated with indole-3-butyric acid (IBA)

Project description:The root cap-specific conversion of the auxin precursor indole-3-butyric acid (IBA) into the main auxin indole-3-acetic acid (IAA) generates a local auxin source which subsequently modulates both the periodicity and intensity of auxin response oscillations in the root tip of Arabidopsis, and consequently fine-tunes the spatiotemporal patterning of lateral roots. To explore downstream components of this signaling process, we investigated the early transcriptional regulations happening in the root tip during IBA-to-IAA conversion in Col-0 and ibr1 ibr3 ibr10 triple mutant after 6 hours of IBA treatment. Arabidopsis thaliana (L). Heynh., Col-0 and ibr1ibr3ibr10 seeds were germinated vertically on solid medium derived from standard Murashige and Skoog (MS) medium. Three days after germination, Col-0 and ibr1ibr3ibr10 seedlings were transferred to a fresh MS medium supplemented with or without 10 ?M indole-3-buytric acid (IBA) for 6 hours. Then, root tip segments (~4mm) were dissected from the primary root and harvested for further RNA extraction. For each treatment, at least 120 individual Col-0 or ibr1ibr3ibr10 mutant root tip segments were sampled and three independent biological replicates were performed. Hormone and DMSO solution were filer-sterilized before being added to the medium.

2015-05-12 | E-GEOD-59426 | biostudies-arrayexpress

Expression data from Arabidopsis seedlings upon LRIS using NAA (1-Naphthaleneacetic acid) or non-auxin-like lateral root inducer naxillin

Project description:The acquisition of water and nutrients by plant roots is a fundamental aspect of agriculture and strongly depends on root architecture. Root branching and expansion of the root system is achieved through the development of lateral roots and is to a large extent controlled by the plant hormone auxin. However, the pleiotropic effects of auxin or auxin-like molecules on root systems complicate the study of lateral root development. Here we describe a small-molecule screen in Arabidopsis thaliana that identified naxillin as what is to our knowledge the first non-auxin-like molecule that promotes root branching. By using naxillin as a chemical tool, we identified a new function for root cap-specific conversion of the auxin precursor indole-3-butyric acid into the active auxin indole-3-acetic acid and uncovered the involvement of the root cap in root branching. Delivery of an auxin precursor in peripheral tissues such as the root cap might represent an important mechanism shaping root architecture. To further explore the specificity of naxillin for lateral root development, we compared the early effects of naxillin at the transcriptome level with NAA (1-Naphthaleneacetic acid) in roots of 3-day-old seedlings after 2-h and 6-h treatment.

2012-12-18 | GSE42896 | GEO

Effect of Serendipita indica-infection on the gene expression in wild-type and YUC9 overexpressing Arabidopsis thaliana plants

Project description:The root-colonizing fungal endophyte Serendipita indica, formerly known as Piriformospora indica, is well known to promote plant biomass production and stress tolerance of its host plants. Moreover, previous studies highlighted an important impact of the fungus on auxin homeostasis during the infection of Arabidopsis thaliana plants. Auxin is a key determinant of plant growth, including the growth of the root system. Auxin overproducing mutants, like for instance YUC9oe (Hentrich et al., 2013 Plant J.), show a pronounced root phenotype that can be restored by the co-cultivation with S. indica. We here report the comparative analysis of the effect of a mock- and S. indica-infection on both wild-type Arabidopsis plants (Col-0) and YUC9 overexpressing mutants. Our data provide evidence for the induction of GRETCHEN HAGEN 3 (GH3) genes that are involved in conjugating active free indole-3-acetic acid with amino acids. The fungus triggered induction GH3s is suggested to be involved in affecting the cellular auxin homeostasis.

2023-08-30 | GSE240683 | GEO

The small signalling peptide CEP5 attenuates the dynamic AUX/IAA equilibrium

Project description:Root architecture is vital for plant growth and largely depends on primary root growth and lateral root development. Several plant hormones have been shown to affect root architecture among which auxin has been granted a central role. Lately, small signalling peptides also emerged as potential molecular components regulating root growth and development. Here, we identified C-TERMINALLY ENCODED PEPTIDE 5 (CEP5) as a novel, phloem poleexpressed paracrine signal for lateral root initiation. Our genetic, biochemical and pharmacological results show that CEP5 counteracts auxin signalling by stabilizing AUXIN/INDOLE ACETIC ACID (AUX/IAA) transcriptional repressors, suggesting the existence of an additional control mechanism through which plants can attenuate auxin signalling in a developmental context. Reducing CEP5 expression levels resulted in an increased auxin response and subsequently interfered with the normal progression through lateral root developmental stages.

2022-03-01 | PXD002589 | Pride

Transcription profiling of Arabidopsis wild type, 35S-ARR7, arr7 and 35S-ARR15 treated with cytokinin, auxin or both

Project description:Above ground tissue of 10 day old Arabidopsis seedlings of Col wild-type, 35S-ARR7, arr7, 35S-ARR15 was treated with Cytokinin (benzyladenine), Auxin (indole-3-acetic acid) or both.

2010-12-31 | E-MEXP-2270 | biostudies-arrayexpress

Rice global gene expression profile in response to plant hormones

Project description:A time course gene expression profiling of rice treated with various plant hormones (abscisic acid, gibberelin, auxin, brassinosteroid, cytokinin and jasmonic acid) was performed to obtain an overall signature of the rice transcriptome in response to each phytohormone. The transcriptome of rice seedlings treated with various plant hormones such as abscisic acid (ABA), gibberellic acid 3 (GA3), indole-3-acetic acid (IAA), brassinolide (BL), trans-zeatin (tZ), and jasmonic acid (JA) was characterized by microarray analysis. Seven-day old seedlings were transferred in culture solutions with specific hormones and in culture solution without hormone to serve as control (mock treatment). Root samples were collected and analyzed in three replicates at pretreatment (control) and after 15 min, 30 min, 1 h, 3 h and 6 h incubation in culture solutions with each hormone. Shoot samples were collected and analyzed in two replicates at pretreatment (control) and after 1 h, 3 h, 6 h and 12 h incubation culture solutions with each hormone. A total of 93 microarray data for root and 50 microarray data for shoot were obtained.

2012-12-03 | E-GEOD-39429 | biostudies-arrayexpress

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