Ontology highlight
ABSTRACT:
PROVIDER: PRJNA639684 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR12023542_1.fastq.gz | Fastqsanger.gz | |||
| SRR12023542_2.fastq.gz | Fastqsanger.gz | |||
| SRR12023543_1.fastq.gz | Fastqsanger.gz | |||
| SRR12023543_2.fastq.gz | Fastqsanger.gz | |||
| SRR12023544_1.fastq.gz | Fastqsanger.gz |
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Project description:Root hairs are an extensive structure of root epidermal cells and are critical for nutrient acquisition, soil anchorage, and environ- mental interactions in sessile plants. The phytohormone ethylene (ET) promotes root hair growth and also mediates the effects of different signals that stimulate hair cell development. However, the molecular basis of ET-induced root hair growth remains poorly understood. Here, we show that ET-activated transcription factor ETHYLENE-INSENSITIVE 3 (EIN3) physically interacts with ROOT HAIR DEFECTIVE 6 (RHD6), a well-documented positive regulator of hair cells, and that the two factors directly coactivate the hair length-determining gene RHD6-LIKE 4 (RSL4) to promote root hair elongation. Transcriptome analysis further revealed the parallel roles of the regulator pairs EIN3/EIL1 (EIN3-LIKE 1) and RHD6/ RSL1 (RHD6-LIKE 1). EIN3/EIL1 and RHD6/RSL1 coordinately en- hance root hair initiation by selectively regulating a subset of core root hair (H) genes. Thus, our work reveals a key transcriptional complex consisting of EIN3/EIL1 and RHD6/RSL1 in the control of root hair initiation and elongation, and provides a molecular framework for the integration of environmental signals and in- trinsic regulators in modulating plant organ development.
2017-12-12 | GSE107699 | GEO
Project description:This is the single cell model for analysis of hormonal crosstalk in Arabidopsis described in the article:
Modelling and experimental analysis of hormonal crosstalk in Arabidopsis.
Liu J, Mehdi S, Topping J, Tarkowski P and Lindsey K. Mol Syst Biol. 2010 Jun 8;6:373; PmID: 20531403
, DOI: 10.1038/msb.2010.26
Abstract:
An important question in plant biology is how genes influence the crosstalk between hormones to regulate growth. In this study, we model POLARIS (PLS) gene function and crosstalk between auxin, ethylene and cytokinin in Arabidopsis. Experimental evidence suggests that PLS acts on or close to the ethylene receptor ETR1, and a mathematical model describing possible PLS-ethylene pathway interactions is developed, and used to make quantitative predictions about PLS-hormone interactions. Modelling correctly predicts experimental results for the effect of the pls gene mutation on endogenous cytokinin concentration. Modelling also reveals a role for PLS in auxin biosynthesis in addition to a role in auxin transport. The model reproduces available mutants, and with new experimental data provides new insights into how PLS regulates auxin concentration, by controlling the relative contribution of auxin transport and biosynthesis and by integrating auxin, ethylene and cytokinin signalling. Modelling further reveals that a bell-shaped dose-response relationship between endogenous auxin and root length is established via PLS. This combined modelling and experimental analysis provides new insights into the integration of hormonal signals in plants.
This model was originally created using Copasi and taken from the supplementary materials of the MSB article. It uses equation 5 for the auxin biosynthesis and was altered to also contain the reactions for ACC, IAA and cytokinine import. Different from the supplementary material, the parameters for the auxin synthesis, v2, are set to k2c = 0.01 uM and k2=0.2 uM_per_sec and for the WT PLS transcription k6=0.3 . To obtain the model described in the first table of the supplementary materials, set k2c=k2=0 and k6=0.9 . For the pls and PLSox mutants, k6 should be set to 0 and 0.45, respectively.
This model originates from BioModels Database: A Database of Annotated Published Models. It is copyright (c) 2005-2010 The BioModels Team.
For more information see the terms of use
.
To cite BioModels Database, please use Le Novère N., Bornstein B., Broicher A., Courtot M., Donizelli M., Dharuri H., Li L., Sauro H., Schilstra M., Shapiro B., Snoep J.L., Hucka M. (2006) BioModels Database: A Free, Centralized Database of Curated, Published, Quantitative Kinetic Models of Biochemical and Cellular Systems Nucleic Acids Res., 34: D689-D691.
2024-09-02 | BIOMD0000000269 | BioModels
Project description:In plant tissue culture, callus forms from detached explants in response to a high-auxin-to-low-cytokinin ratio on callus-inducing medium. Callus is a group of pluripotent cells because it can regenerate either roots or shoots in response to a low level of auxin on root-inducing medium or a high-cytokinin-to-low-auxin ratio on shoot-inducing medium, respectively1. However, our knowledge of the mechanism of pluripotency acquisition during callus formation is limited. On the basis of analyses at the single-cell level, we show that the tissue structure of Arabidopsis thaliana callus on callus-inducing medium is similar to that of the root primordium or root apical meristem, and the middle cell layer with quiescent centre-like transcriptional identity exhibits the ability to regenerate organs. In the middle cell layer, WUSCHEL-RELATED HOMEOBOX5 (WOX5) directly interacts with PLETHORA1 and 2 to promote TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS1 expression for endogenous auxin production. WOX5 also interacts with the B-type ARABIDOPSIS RESPONSE REGULATOR12 (ARR12) and represses A-type ARRs to break the negative feedback loop in cytokinin signalling. Overall, the promotion of auxin production and the enhancement of cytokinin sensitivity are both required for pluripotency acquisition in the middle cell layer of callus for organ regeneration.
2021-09-08 | GSE156991 | GEO
Project description:In plant tissue culture, callus forms from detached explants in response to a high-auxin-to-low-cytokinin ratio on callus-inducing medium. Callus is a group of pluripotent cells because it can regenerate either roots or shoots in response to a low level of auxin on root-inducing medium or a high-cytokinin-to-low-auxin ratio on shoot-inducing medium, respectively1. However, our knowledge of the mechanism of pluripotency acquisition during callus formation is limited. On the basis of analyses at the single-cell level, we show that the tissue structure of Arabidopsis thaliana callus on callus-inducing medium is similar to that of the root primordium or root apical meristem, and the middle cell layer with quiescent centre-like transcriptional identity exhibits the ability to regenerate organs. In the middle cell layer, WUSCHEL-RELATED HOMEOBOX5 (WOX5) directly interacts with PLETHORA1 and 2 to promote TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS1 expression for endogenous auxin production. WOX5 also interacts with the B-type ARABIDOPSIS RESPONSE REGULATOR12 (ARR12) and represses A-type ARRs to break the negative feedback loop in cytokinin signalling. Overall, the promotion of auxin production and the enhancement of cytokinin sensitivity are both required for pluripotency acquisition in the middle cell layer of callus for organ regeneration.
2021-09-08 | GSE156990 | GEO
Project description:In plant tissue culture, callus forms from detached explants in response to a high-auxin-to-low-cytokinin ratio on callus-inducing medium. Callus is a group of pluripotent cells because it can regenerate either roots or shoots in response to a low level of auxin on root-inducing medium or a high-cytokinin-to-low-auxin ratio on shoot-inducing medium, respectively1. However, our knowledge of the mechanism of pluripotency acquisition during callus formation is limited. On the basis of analyses at the single-cell level, we show that the tissue structure of Arabidopsis thaliana callus on callus-inducing medium is similar to that of the root primordium or root apical meristem, and the middle cell layer with quiescent centre-like transcriptional identity exhibits the ability to regenerate organs. In the middle cell layer, WUSCHEL-RELATED HOMEOBOX5 (WOX5) directly interacts with PLETHORA1 and 2 to promote TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS1 expression for endogenous auxin production. WOX5 also interacts with the B-type ARABIDOPSIS RESPONSE REGULATOR12 (ARR12) and represses A-type ARRs to break the negative feedback loop in cytokinin signalling. Overall, the promotion of auxin production and the enhancement of cytokinin sensitivity are both required for pluripotency acquisition in the middle cell layer of callus for organ regeneration.
2021-09-08 | GSE178354 | GEO
Project description:Ethylene is a gaseous hormone that plays important roles in plant growth, development and stress responses. EIN3 was identified as a plant-specific transcription factor and its protein level rapidly increases upon ethylene treatment. We found that activation of EIN3 and EIN3-like 1 (EIL1) is both necessary and sufficient for ethylene-induced enhancement of seedling greening, as well as repression of the accumulation of protochlorophyllide, a phototoxic intermediate of chlorophyll synthesis. Therefore, comparation of the Wt and ein3-1eil1-1 mutant etiolated seedlings' gene expression at genome wide will be helpfull for us to find the EIN3/EIL1 target genes in chlorophyll biosynthesis pathway. Here we used microarrays to detail the global gene expression under the regulation of EIN3/EIL1.Here we used microarrays to detail the global gene expression under the regulation of EIN3/EIL1.
2009-10-20 | GSE18631 | GEO
Project description:Ethylene is a gaseous hormone that plays important roles in plant growth, development and stress responses. EIN3 was identified as a plant-specific transcription factor and its protein level rapidly increases upon ethylene treatment. We found that activation of EIN3 and EIN3-like 1 (EIL1) is both necessary and sufficient for ethylene-induced enhancement of seedling greening, as well as repression of the accumulation of protochlorophyllide, a phototoxic intermediate of chlorophyll synthesis. Therefore, comparation of the Wt and ein3-1eil1-1 mutant etiolated seedlings' gene expression at genome wide will be helpfull for us to find the EIN3/EIL1 target genes in chlorophyll biosynthesis pathway. Here we used microarrays to detail the global gene expression under the regulation of EIN3/EIL1.Here we used microarrays to detail the global gene expression under the regulation of EIN3/EIL1. Experiment Overall Design: 4 days dark grown Wt and ein3-1eil1-1 (AT3G20770, AT2G27050) double mutant seedlings were collected for isolation RNA. Standard Affymetrix protocal and 25K Affymetrix chip (ATH1) were used for Microarry hybridization.
2009-10-27 | E-GEOD-18631 | biostudies-arrayexpress
Project description:Jasmonate and ethylene are two important plant hormones contributing plant resistance to biotic stresses synergistically. Our experimental results showed that two ethylene activated transcription factors (EIN3/EIL1) integrated both jasmonate and ethylene signaling in multiple developmental and defense events. To understand the importance of EIN3/EIL1 in jasmonate signaling, we utilized microarray analysis to identify how much the jasmonate regulated genes are governed by EIN3/EIL1. Our results indicated that EIN3/EIL1 act sequentially in a cascade of transcriptional regulation initiated by jasmonate.
2010-05-11 | GSE21762 | GEO
Project description:We report differences in the transcriptional responses of the root and the shoot to either auxin or ABA in comparison to mock treatment in dark-grown Arabidopsis thaliana seedlings. By examining the auxin responsiveness in the shoot or the root of a dark-growh ABA biosynthesis mutant, we found that auxin relies on intact ABA biosynthesis in order to regulate aspects of transriptional output.
2022-03-21 | GSE169302 | GEO
Project description:Jasmonate and ethylene are two important plant hormones contributing plant resistance to biotic stresses synergistically. Our experimental results showed that two ethylene activated transcription factors (EIN3/EIL1) integrated both jasmonate and ethylene signaling in multiple developmental and defense events. To understand the importance of EIN3/EIL1 in jasmonate signaling, we utilized microarray analysis to identify how much the jasmonate regulated genes are governed by EIN3/EIL1. Our results indicated that EIN3/EIL1 act sequentially in a cascade of transcriptional regulation initiated by jasmonate. Compare the JA regulated genes in Col-0, coi1-2 and ein3 eil1 to identify how much transcripts are dependent on COI1 or EIN3/EIL1
2010-05-28 | E-GEOD-21762 | biostudies-arrayexpress