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Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression [Agilent]

ABSTRACT: Abiotic stresses cause serious damage to plants; therefore, plants undergo a complicated stress response through signal transduction originating from environmental stimuli. Here we show that a subset of short-chain leaf volatiles with an M-NM-1,M-NM-2-unsaturated carbonyl bond in their structure (reactive short-chain leaf volatiles, RSLVs) like (E)-2-hexenal and (E)-2-butenal can act as signal chemicals that strongly induce the gene expression of abiotic-related transcription factors, such as heat stress-related transcription factors (HSFA2, MBF1c) and other abiotic stress-related transcription factors (DREB2A, ZATs). RSLV-induced expression of HSFA2 and MBF1c was eliminated in HSFA1s-, known as heat stress response master regulators, knockout mutant, whereas those of DREB2A and ZATs were not, suggesting that the RSLV signaling pathway is composed of HSFA1-dependent and -independent pathways. RSLV treatment induced production of chaperon proteins, and the RSLV-treated Arabidopsis thus demonstrated enhanced abiotic stress tolerance. Because oxidative stress treatment enhanced RSLV production, we concluded that commonly found RSLVs produced by environmental stresses are powerful inducer of abiotic stress-related gene expression as oxidative stress signals. A four chips study of Columbia-0 following 10 M-BM-5M 2E-pentenal, 3-hepten-2-one or crotonaldehydel treatment for 30 min. Datasets including acetonitrile (control) and volatiles treated samples.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Yasuo Yamauchi

PROVIDER: E-GEOD-64354 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression [NimbleGen]

Project description:Abiotic stresses cause serious damage to plants; therefore, plants undergo a complicated stress response through signal transduction originating from environmental stimuli. Here we show that a subset of short-chain leaf volatiles with an M-NM-1,M-NM-2-unsaturated carbonyl bond in their structure (reactive short-chain leaf volatiles, RSLVs) like (E)-2-hexenal and (E)-2-butenal can act as signal chemicals that strongly induce the gene expression of abiotic-related transcription factors, such as heat stress-related transcription factors (HSFA2, MBF1c) and other abiotic stress-related transcription factors (DREB2A, ZATs). RSLV-induced expression of HSFA2 and MBF1c was eliminated in HSFA1s-, known as heat stress response master regulators, knockout mutant, whereas those of DREB2A and ZATs were not, suggesting that the RSLV signaling pathway is composed of HSFA1-dependent and -independent pathways. RSLV treatment induced production of chaperon proteins, and the RSLV-treated Arabidopsis thus demonstrated enhanced abiotic stress tolerance. Because oxidative stress treatment enhanced RSLV production, we concluded that commonly found RSLVs produced by environmental stresses are powerful inducer of abiotic stress-related gene expression as oxidative stress signals. A four chips study of Columbia-0 following 10 M-BM-5M 2E-hexenal treatment for 30 min. Datasets including acetonitrile (control) and 2E-hexenal treated samples (triplicates).

2014-12-20 | E-GEOD-64355 | biostudies-arrayexpress

Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression [Agilent]

Project description:Abiotic stresses cause serious damage to plants; therefore, plants undergo a complicated stress response through signal transduction originating from environmental stimuli. Here we show that a subset of short-chain leaf volatiles with an α,β-unsaturated carbonyl bond in their structure (reactive short-chain leaf volatiles, RSLVs) like (E)-2-hexenal and (E)-2-butenal can act as signal chemicals that strongly induce the gene expression of abiotic-related transcription factors, such as heat stress-related transcription factors (HSFA2, MBF1c) and other abiotic stress-related transcription factors (DREB2A, ZATs). RSLV-induced expression of HSFA2 and MBF1c was eliminated in HSFA1s-, known as heat stress response master regulators, knockout mutant, whereas those of DREB2A and ZATs were not, suggesting that the RSLV signaling pathway is composed of HSFA1-dependent and -independent pathways. RSLV treatment induced production of chaperon proteins, and the RSLV-treated Arabidopsis thus demonstrated enhanced abiotic stress tolerance. Because oxidative stress treatment enhanced RSLV production, we concluded that commonly found RSLVs produced by environmental stresses are powerful inducer of abiotic stress-related gene expression as oxidative stress signals.

2014-12-20 | GSE64354 | GEO

Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression [NimbleGen]

Project description:Abiotic stresses cause serious damage to plants; therefore, plants undergo a complicated stress response through signal transduction originating from environmental stimuli. Here we show that a subset of short-chain leaf volatiles with an α,β-unsaturated carbonyl bond in their structure (reactive short-chain leaf volatiles, RSLVs) like (E)-2-hexenal and (E)-2-butenal can act as signal chemicals that strongly induce the gene expression of abiotic-related transcription factors, such as heat stress-related transcription factors (HSFA2, MBF1c) and other abiotic stress-related transcription factors (DREB2A, ZATs). RSLV-induced expression of HSFA2 and MBF1c was eliminated in HSFA1s-, known as heat stress response master regulators, knockout mutant, whereas those of DREB2A and ZATs were not, suggesting that the RSLV signaling pathway is composed of HSFA1-dependent and -independent pathways. RSLV treatment induced production of chaperon proteins, and the RSLV-treated Arabidopsis thus demonstrated enhanced abiotic stress tolerance. Because oxidative stress treatment enhanced RSLV production, we concluded that commonly found RSLVs produced by environmental stresses are powerful inducer of abiotic stress-related gene expression as oxidative stress signals.

2014-12-20 | GSE64355 | GEO

The composition and function of chaperone networks in Solanum lycopersicum explored by transcriptome sequencing and microarray meta-analysis

Project description:Heat shock proteins (Hsps) are molecular chaperones primarily involved in maintenance of protein homeostasis. Their function has been best characterized in heat stress (HS) response during which Hsps are transcriptionally controlled by heat stress transcription factors (Hsfs). The role of Hsfs and Hsps in HS-response in tomato was initially examined by transcriptome analysis using the Massive Analysis of cDNA Ends (MACE) method. Approximately 9.6% of all genes expressed in leaves are enhanced in response to HS, including a subset of Hsfs and Hsps. The underlying Hsp-Hsf networks with potential functions in stress responses or developmental processes were further explored by meta-analysis of existing microarray datasets. We identified clusters with differential transcript profiles with respect to abiotic stresses, plant organs and developmental stages. The composition of two clusters points toward two major chaperone networks. One cluster consisted of constitutively expressed plastidial chaperones and other genes involved in chloroplast protein homeostasis. The second cluster represents genes strongly induced by heat, drought and salinity stress, including HsfA2 and many stress-inducible chaperones, but also potential targets of HsfA2 not related to protein homeostasis. This observation attributes a central regulatory role to HsfA2 in controlling different aspects of abiotic stress response and tolerance in tomato. 2 samples

2014-08-01 | E-GEOD-56611 | biostudies-arrayexpress

The small RNA diversity from Medicago truncatula roots under biotic interactions evidences the environmental plasticity of the miRNAome

Project description:Plants show a remarkable plasticity to adapt their root architecture to biotic and abiotic constraints of the soil environment. Although some of these modifications are fine-tuned by miRNAs, there are still shadow zones in these regulations. In the model legume Medicago truncatula, we analyzed the small RNA (smRNA) transcriptome of roots submitted to symbiotic and pathogenic interactions. Mapping on the genome and prediction of pre-miRNA hairpins allowed the identification of 416 candidates. Out of them, we found known and novel variants of 77 miRNA families, already reported in miRBase. In addition, thanks stringent criteria of miRNA prediction, 53 mtr-miRNAs were discovered, including 27 putative miRtrons. Exploring polymorphism in 26 M. truncatula ecotypes, higher polymorphism was observed in conserved rather than legume-specific miRNA genes. An average of 19 targets, mainly involved in environmental responses and signaling, was predicted per novel miRNA. In addition, taking advantage of our large number of smRNA libraries, we identified sets of miRNAs responsive to root pathogens or to symbiotic interactions and the related Nod and myc-LCO signals. 23 libraries of small RNA (smRNA) of roots submitted to symbiotic and pathogenic interactions.

2014-08-15 | E-GEOD-49226 | biostudies-arrayexpress

Expression data from WT and transgenic plants overexpressing cold-induced transcription factors

Project description:Our goal in this study is to understand the regulation mechanism of genes including CBF regulon in low temperature. We addressed these issues by overexpressing the transcription factors encoded by genes that are rapidly induced in parallel with the CBF genes. The results show that the low temperature regulatory network is highly interconneted. Global gene expression profile of the transgenic plants overexpressing TFs was compared with that of WT plants

2015-02-28 | E-GEOD-55907 | biostudies-arrayexpress

The composition and function of chaperone networks in Solanum lycopersicum explored by transcriptome sequencing and microarray meta-analysis

2014-08-01 | GSE56611 | GEO

Project description:Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression

| PRJNA270840 | ENA

Reactive leaf volatiles act as powerful inducers of abiotic stress-related gene expression

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2014-12-20 | E-GEOD-64356 | biostudies-arrayexpress

The small RNA PsrR1 affects oligomerization of photosystem I by post-transcriptional repression of psaL in Synechocystis sp. PCC6803

Project description:Comparison of gene expression of WT Synechocystis cells with cells overexpressing the sRNA PsrR1 in order to detect direct targets of the sRNA PsrR1. We monitored gene expression of an Synechocystis PCC6083 overexpressor strain (psrR1+) (Mitschke et al., 2011) harboring a self-replicating plasmid from which PsrR1 is transcribed under control of the copper responsive PpetJ promoter and a control strain (WT) harboring an empty plasmid 0h and 24 h after copper depletion. For the timepoint (0h) we sampled biological replicates and for timepoint (24h) we sampled biological triplicates.

2012-10-10 | E-GEOD-41411 | biostudies-arrayexpress

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