Transcriptomic profiling of Arabidopsis exposed to E-2-hexenal
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
PROVIDER: GSE53957 | GEO | 2015/09/08
SECONDARY ACCESSION(S): PRJNA234035
REPOSITORIES: GEO
Similar Datasets
Project description:Plants are known to be responsive to volatiles, but knowledge about the molecular players involved in transducing their perception remain scarce. Here the response of Arabidopsis thaliana to E-2-hexenal, one of the green leaf volatiles that are produced upon wounding, herbivory or infection with pathogens is studied. We have taken a transcriptomics approach to identify genes that are induced by E-2-hexenal but not by defense hormones. In three independent biological experiments, Arabidopsis plants, ecotype Columbia (Col-0), were exposed either to 3 µM aerial E-2-hexenal or to the carrier MeOH for the mock treatment and rosette leaves were harvested after 1h, 3h and 24h.
2015-09-08 | E-GEOD-53957 | biostudies-arrayexpress
Project description:Plants perceive herbivory induced volatiles and respond to them by upregulating their defenses. So far, the organs responsible for volatile perception remain poorly described. Here, we show that responsiveness to the herbivory induced green leaf volatile (Z)-3-hexenyl acetate (HAC) in terms of volatile emission, transcriptional regulation and jasmonate defense hormone activation is largely constrained to younger maize leaves. Older leaves are much less sensitive to HAC. In a given leaf, responsiveness to HAC is high at immature developmental stages and drops off rapidly during maturation. Responsiveness to the non-volatile elicitor ZmPep3 shows an opposite pattern, demonstrating that this form of hyposmia (i.e. decreased sense of smell) is not due to a general defect in jasmonate defense signaling in mature leaves. Neither stomatal conductance nor leaf cuticle composition explain the unresponsiveness of older leaves to HAC, suggesting perception mechanisms upstream of jasmonate signaling as driving factors. Finally, we show that hyposmia in older leaves is not restricted to HAC, and extends to the full blend of herbivory induced volatiles. In conclusion, our work identifies immature maize leaves as dominant stress volatile sensing organs. The tight spatiotemporal control of volatile perception may facilitate within-plant defense signaling to protect young leaves, and may allow plants with complex architectures to explore the dynamic odor landscapes at the outer periphery of their shoots
2023-07-10 | GSE236332 | GEO
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
Project description:In this experiment we aimed to decipher the transcription response of rice to the different cues of an herbivory attack from the chewing caterpillar Spodoptera frugiperda. We performed a herbivory mimic procedure on seedlings and applied mechanical wounding (WOS), application of herbivore oral secretions (OS) after wounding (WOS+) and dysbiotic OS (WOS-) on rice leaves. RNA was extracted from control and treated leaves after two hours. 5 biological replicates corresponding to 5 pooled leaves were performed for each of the four condition
2023-08-31 | E-MTAB-13227 | biostudies-arrayexpress
Project description:In plants, an increase in resource allocation to growth (primary metabolism) associated with the presence of neighbors is likely to reduce defense-related production (secondary metabolism), making plants more vulnerable to herbivory. Even though there is increasing evidence supporting this “trade-off hypothesis”, the underlying mechanisms are still unclear. Far red (FR) radiation reflected from plant tissues serves as an early warning signal of future competition, triggering a suite of plastic morphological adjustments that improve plant’s ability to compete for light in crowded populations. Recent evidence from our lab showed that, when competition signals are present, plant defenses are severely reduced. Besides direct effects of herbivory and competition signals on target plants, second order effects occurs on neighboring plants through plant volatiles (PVs) communication. PVs play a key role in plant-plant and plant-insect interactions, changing its content and composition in response to environmental conditions. To increase our understanding of the molecular mechanisms underlying those interacting signaling webs, we performed a field study with tomato plants (cv Moneymaker), in which plants of EMITTER plots (six plants plot-1) were subjected to herbivory (nine larvae of Spodoptera eridania plant-1) and competition signals (increased FR radiation) in a factorial design. Light treatment started 28 days after sowing (DAS), and herbivory treatment and volatiles conduction started 34 DAS. Volatiles were conducted from EMITTER to RECEIVER plots (five plants plot-1) using a 5 inch, 1.4 m long tube fitted with a computer-type fan. 40 and 45 DAS, larval performance was measured on EMITTER plots as well as naturally-occurring insect colonization on RECEIVER plots. Finally (46 DAS), samples for bulk phenolic content were taken on every plot, and plant material from 4th and 5th leaves was collected for microarray analysis. There were three real biological replicates. Keywords: Reference design
2008-02-13 | GSE10486 | GEO
Project description:Plants are attacked by diverse herbivores and respond with manifold defense responses. To study transcriptional and other early regulation events of these plant responses, herbivory is often mimicked to standardize the temporal and spatial dynamics that vary tremendously for natural herbivory. Yet to what extent such mimics of herbivory are able to elicit the same plant response as real herbivory remains largely undetermined. We examined the transcriptional response of a new model plant to herbivory by a lepidopteran larva and to a commonly used herbivory mimic by applying the larvae’s oral secretions to standardized wounds. We designed a microarray for Solanum dulcamara and showed that the transcriptional response to real and to simulated herbivory by Spodoptera exigua overlapped moderately by about 40%. Interestingly, certain responses were mimicked better than others; 60% of the genes up-regulated but not even a quarter of the genes down-regulated by herbivory were similarly affected by application of oral secretions to wounds. While the regulation of genes involved in signaling, defense and water stress were mirrored well by the herbivory mimic, most of the genes related to photosynthesis, carbohydrate- and lipid metabolism were exclusively regulated by real herbivory. Thus, wounding and elicitor application decently mimics herbivory-induced defense responses but likely not the re-allocation of primary metabolites induced by real herbivory.
2017-04-24 | GSE97043 | GEO
Project description:Transcriptional profiling of Arabidopsis thaliana wild type (WT) comparing MD (mechanical damage) and HW (herbivore wounding). The differences in the biochemical responses to herbivory seen prompted us to search for less obvious differences between treatments using gene expression profiling. Biological replicates: 4
2012-09-18 | GSE40923 | GEO
Project description:comparision of transcripts inductions in JA biosynthesis or perception mutants to the WT plants in response to wounding.
2009-02-18 | E-MEXP-1475 | biostudies-arrayexpress
Project description:Z-3-Hexenol and other green leaf volatiles have been known to induce defense-related gene expression. Here we investigated the early transcriptional changes in response to Z-3-hexenol.
2013-06-15 | GSE47982 | GEO
Project description:Green leaf volatiles (GLVs) are short-chain oxylipins that are emitted from plants in response to stress.
Previous studies have shown that oral secretions (OS) of the tobacco hornworm Manduca sexta, introduced
into plant wounds during feeding, catalyze the re-arrangement of GLVs from Z-3- to E-2-isomers. This
change in the volatile signal however is bittersweet for the insect as it can be used by their natural enemies,
as prey location cue. Here we identified a (3Z):(2E)-hexenal isomerase (Hi-1) in M. sexta OS that
catalyzes the conversion of the GLV Z-3-hexenal to E-2-hexenal. Hi-1 mutants that were raised on a GLV27
free diet showed developmental disorders, indicating that Hi-1 also metabolizes other substrates important
for the insects development. Phylogenetic analysis placed Hi-1 within the GMCb-subfamily and showed
that Hi-1 homologs from other lepidopterans could catalyze similar reactions. Our results indicate that Hi-
1 not only modulates the plants GLV-bouquet but also functions in insect development.
2023-05-23 | MSV000092011 | MassIVE