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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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

ABSTRACT: 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

ORGANISM(S): Arabidopsis

SUBMITTER: Hongwei Guo

PROVIDER: E-GEOD-21762 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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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.

2010-05-11 | GSE21762 | GEO

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

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2009-10-27 | E-GEOD-18631 | biostudies-arrayexpress

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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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ETHYLENE-INSENSITIVE5 encodes a 5' to 3' exoribonuclease required for posttranscriptional regulation

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2006-08-08 | GSE5174 | GEO

Ethylene-insensitive5 encodes a 5'->3' exoribonuclease required for regulation of EIN3-targeting F-box proteins EBF1/2

Project description:thylene is a gaseous plant growth regulator that controls a multitude of developmental and stress responses. Recently, the levels of Arabidopsis EIN3 protein, a key transcription factor mediating ethylene-regulated gene expression, have been demonstrated to increase in response to the presence of ethylene gas. Furthermore, in the absence ethylene, EIN3 is quickly degraded through a ubiquitin/proteasome pathway mediated by two F box proteins, EBF1 and EBF2 (1-3). Here, we report the identification of ETHYLENE INSENSITIVE5 as the 5'->3' exoribonuclease XRN4. Specifically, we demonstrate that EIN5 is a component of the ethylene signal transduction cascade acting downstream of CTR1 that is required for ethylene-mediated gene expression changes. Furthermore, we find that the ethylene insensitivity of ein5 mutant plants is a consequence of the over-accumulation of EBF1 and EBF2 mRNAs resulting in the under-accumulation of EIN3 even in the presence of ethylene gas. Together, our results suggest that the role of EIN5 in ethylene perception is to antagonize the negative feedback regulation on EIN3 by promoting EBF1 and EBF2 mRNA decay, which consequently allows the accumulation of EIN3 protein to trigger the ethylene response. Keywords: Arabidopsis growth regulation signal transduction

2006-07-26 | GSE5387 | GEO

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2010-05-27 | E-GEOD-19736 | 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

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