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Integrated regulation of apical hook development by transcriptional coupling of EIN3/EIL1 and PIFs in Arabidopsis

ABSTRACT: A dual-core processor, composed of EIN3/EIL1 and PIFs, mediates both positive and negative regulation of apical hook development by multiple hormones and light signals.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE116802 | GEO | 2018/08/02

REPOSITORIES: GEO

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Salicylic Acid Suppresses Apical Hook Formation via NPR1-Mediated Repression of EIN3/EIL1 in Arabidopsis

Project description:Salicylic acid (SA) and ethylene (ET) are two important plant hormones that regulate numerous plant growth, development, and stress response processes. Previous studies have suggested functional interplay of SA and ET in defense response, but precisely how these two hormones co-regulate plant growth and development processes remains unclear. The present findings reveal an antagonism between SA and ET in apical hook formation, a process that ensures successful soil emergence of dicotyledonous etiolated seedlings. Exogenous SA inhibited the ET-induced expression of HOOKLESS1 (HLS1) in a manner dependent on ETHYLENE INSENSITIVE3 (EIN3)/EIN3-LIKE1 (EIL1), the core transcription factors in the ET signaling pathway. We found that SA-activated NONEXPRESSER OF PR GENES1 (NPR1) physically interacted with EIN3 and interfered with the direct binding of EIN3 to target gene promoters, including the HLS1 promoter. Transcriptomic analysis further revealed that NPR1 and EIN3/EIL1 coordinately regulated subsets of genes that mediate plant growth and stress responses, suggesting that the interaction between NPR1 and EIN3/EIL1 might be an important mechanism for integrating the SA and ET signaling pathways in multiple physiological processes. Taken together, our findings shed light on the molecular mechanism underlying SA regulation of apical hook formation as well as the antagonism between SA and ET in early seedling establishment and possibly other physiological processes.

2020-08-20 | GSE137212 | GEO

Integrated regulation of apical hook development by transcriptional coupling of EIN3/EIL1 and PIFs in Arabidopsis

Project description:Integrated regulation of apical hook development by transcriptional coupling of EIN3/EIL1 and PIFs in Arabidopsis

| PRJNA480268 | ENA

Salicylic Acid Suppresses Apical Hook Formation via NPR1-Mediated Repression of EIN3/EIL1 in Arabidopsis

Project description:Salicylic Acid Suppresses Apical Hook Formation via NPR1-Mediated Repression of EIN3/EIL1 in Arabidopsis

| PRJNA564817 | ENA

Transcription profiling of Arabidopsis wild type and ein3-1eil1-1mutant seedlings grown in the dark

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

Expression from dark grown Arabidopsis Wild type (Wt, Col-o) and ein3-1eil1-1 (AT3G20770, AT2G27050) mutant seedlings

2009-10-20 | GSE18631 | GEO

Ethylene promotes root hair growth through coordinated EIN3/EIL1 and RHD6/RSL1 activity in Arabidopsis

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

Microarray analysis of cross-talks between Jasmonate acid and ethylene signaling in Arabidopsis seedlings

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

Microarray analysis of cross-talks between Jasmonate acid and ethylene signaling in Arabidopsis seedlings

2010-05-11 | GSE21762 | GEO

Transcriptomic analysis of Col and ein3eil1 under Cd stress.

Project description:To reveal the molecular mechanism underlying EIN3-mediated Cd tolerance, we performed RNA sequencing (RNA-seq) analysis to identify Cd-regulated genes that are differentially expressed in ein3 eil1 double mutant.

2019-10-01 | GSE87880 | GEO

1-aminocyclopropane-1-carboxylic acid (ACC)-induced gene expression in wild-type Col-0, mutant upl3 upl4, mutant ein3-1, and mutant upl3 upl4 ein3-1 Arabidopsis thaliana plants

Project description:The plant hormone ethylene is involved in plant developmental, stress and environmental signalling. The ethylene signalling pathway is modulated by the master transcription factor EIN3. Here we examined the involvement of proteasome-associated UPL3 and UPL4 ubiquitin ligases in ethylene-responsive gene expression. We reveal that in absence of functional UPL3 and UPL4, plants show constitutive and enhanced activation or repression of ethylene-responsive genes in an EIN3-dependent manner. Ten-day old Arabidopsis thaliana seedlings of wild-type Col-0, mutant upl3 upl4, mutant ein3-1, and mutant upl3 upl4 ein3-1 were grown on MS media in an environmental chamber with 16/8 hour day/night light regime (120 mol m-2 s-1 light intensity) and 22 degrees Celsius. Seedlings were then transferred to 6-well plates and floated on the surface of water or 50 uM 1-aminocyclopropane-1-carboxylic acid (ACC). After 3 hours seedlings were harvested and for each treatment ~50 seedlings were pooled together into a single biological repeat. In total three independent biological repeats were collected. After harvesting seedlings were briefly dried on tissue and immediately frozen in liquid nitrogen until further analysis.

2021-10-05 | E-MTAB-10964 | biostudies-arrayexpress

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