Stem developement-Lignin mutants and UV stress
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
PROVIDER: GSE8095 | GEO | 2007/06/20
SECONDARY ACCESSION(S): PRJNA100947
REPOSITORIES: GEO
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Project description:af09_lignin - dml6 - Transcriptome analysis of lignin mutants and UV stress effect on secondary wall synthesis - DML6 vs S DML6+UV vs S+UV S vs S+UV DML6 vs DML6+UV Keywords: normal vs disease comparison,treated vs untreated comparison
2007-06-20 | GSE8094 | GEO
Project description:stem developement-Lignin mutants and UV stress
| PRJNA100947 | ENA
Project description:Transcriptome analysis of ultraviolet-radiation time course with paired treatment and control measurements provided groups of coordinately regulated genes and Gene Ontology processes. A set of genes significantly affected by UV was selected by linear modeling plus order-restricted inference profile matches; this gene list was used to find upstream sequence motifs that predict UV regulation of gene expression. Keywords: time course dose response stress response
2007-03-21 | GSE4509 | GEO
Project description:Arabidopsis plants (ecotype Ler) were grown under short day conditions (8h cool white fluorescent light at 100 uE, 16h dark) at 20 °C and ambient humidity in PGW36 phytochambers (Controlled Environment Ltd., Winnipeg, MB, Canada). Plants were grown in Redi soil (Grace & Co, Ajax, ON, Canada) in 12 cm pots at a density of five plants per pot without fertilization for 8 weeks. Light conditions were then changed to long day (16h light, 8h dark), and plants were fertilized once with standard 10-15-10 plant fertilizer (150 ul in 300 ml water per pot) (Schultz, St. Louis, MO, USA). Twelve and 14 days after changing to long day conditions we harvested sections from stems totalling 4-6cm (“5cm stem”) and 9-11cm (“10cm stem”) in length, respectively. All flowers, siliques, cauline leaves, and secondary branches were discarded and the remaining bolting stems were cut with a razor blade to generate the following sections: 0-2cm and 2-4cm from 5cm stems; and 0-3cm, 3-5cm, 5-7cm, and 7-9cm from 10cm stems. For array hybridizations, labelled cDNA derived from each section was co-hybridized with cDNA from 0-2cm sections as a reference. Four replicate arrays (double dye-flip) were hybridized for each comparison. Keywords = fiber Keywords = lignin Keywords = stem developmet Keywords: time-course
2005-11-18 | GSE2000 | GEO
Project description:Microarray technology was used to assess transcriptome changes in poplar (Populus alba L.) under a realistic simulation of increased UV-B radiation. Plants were UV-Bbe (UV-B biologically effective radiation) supplemented with a dose of 6 kJ/m2/day for 12 hours per day and allowed to recover during the night. Poplar plants were UV-B treated using a refined controlled environment able to guarantee a realistic simulation of natural conditions, especially for light parameters such as presence of background UV-B radiation for control plants and balanced PAR/UV-A/UV-B ratio. A time course experiment was planned to look both at the rapid and delayed response of poplar to UVB; two time points after 3 h (T3h) and 30 h (6th hour of the third day of treatment, T30h) were considered. 4 independent biological replicates were analysed for each time point. Competitive hybridisations were carried out using the PICME 28K microarray. Keywords: Time course experiment, stress response
2013-12-01 | GSE9470 | GEO
Project description:Microarray technology was used to assess transcriptome changes in poplar (Populus alba L.) under a realistic simulation of increased UV-B radiation. Plants were UV-Bbe (UV-B biologically effective radiation) supplemented with a dose of 6 kJ/m2/day for 12 hours per day and allowed to recover during the night. Poplar plants were UV-B treated using a refined controlled environment able to guarantee a realistic simulation of natural conditions, especially for light parameters such as presence of background UV-B radiation for control plants and balanced PAR/UV-A/UV-B ratio. A time course experiment was planned to look both at the rapid and delayed response of poplar to UVB; two time points after 3 h (T3h) and 30 h (6th hour of the third day of treatment, T30h) were considered. 4 independent biological replicates were analysed for each time point. Competitive hybridisations were carried out using the PICME 28K microarray. Keywords: Time course experiment, stress response Two condition experiment: UVB supplemented plants vs normal UV-B level plants. Biological replicates: 4 UVB suplemented plants, 4 control plants, two time points, one replicate per array. Dye swap between replicates.
2013-12-01 | E-GEOD-9470 | biostudies-arrayexpress
Project description:Cockayne syndrome B (CSB) protein is a member of the SWI/SNF family and has DNA-dependent ATPase and ATP-dependent chromatin remodeling activities. The CSB protein is missing or altered in CS-B cells. CS-B cells are hypersensitive to UV light and defective in transcription-coupled DNA repair (TCR). TCR efficiently removes a variety of lesions from the transcribed strand of active genes. It has been shown that lesions specifically in the transcribed strand of active genes trigger the induction of apoptosis following UV irradiation. Several DNA damage signaling cascades, including the ATR/Chk1, p38 kinase, p53, and jun N-terminal kinase pathways are activated following UV irradiation. However, the role of TCR in cellular global transcriptional responses to UV irradiation remains to be elucidated. Using oligonucleotide microarray technology, we analyzed the time course of responses of CS-B cells (CS-B) and CS-B cells complemented with wild-type CSB cDNA (CS-B wt). Keywords: UV response, time course, disease state analysis
2007-09-10 | GSE8939 | GEO
Project description:UV-B radiation regulates numerous morphogenic, biochemical and physiological responses in plants, and can stimulate some responses typically associated with other abiotic and biotic stimuli, including invertebrate herbivory. Removal of UV-B from the growing environment of various plant species has been found to increase their susceptibility to consumption by invertebrate pests, however, to date, little research has been conducted to investigate the effects of UV-B on crop susceptibility to field pests. Here, we report findings from a multi-omic and genetic-based study investigating the mechanisms of UV-B-stimulated resistance of the crop, Brassica napus (oilseed rape), to herbivory from an economically important lepidopteran specialist of the Brassicaceae, Plutella xylostella (diamondback moth). The UV-B photoreceptor, UV RESISTANCE LOCUS 8 (UVR8), was not found to mediate resistance to this pest. RNA-Seq and untargeted metabolomics identified components of the sinapate/lignin biosynthetic pathway that were similarly regulated by UV-B and herbivory. Arabidopsis mutants in genes encoding two enzymes in the sinapate/lignin biosynthetic pathway, CAFFEATE O-METHYLTRANSFERASE 1 (COMT1) and ELICITOR-ACTIVATED GENE 3-2 (ELI3-2), retained UV-B-mediated resistance to P. xylostella herbivory. However, overexpression of B. napus COMT1 in Arabidopsis further reduced plant susceptibility to P. xylostella herbivory in a UV-B-dependent manner. These findings demonstrate that overexpression of a component of the sinapate/lignin biosynthetic pathway in a member of the Brassicaceae can enhance UV-B-stimulated resistance to herbivory from P. xylostella.
2023-08-01 | GSE239314 | GEO
Project description:The transcriptional response to 50 J/m2 of UV-light (254 nm) was assessed with HGU95AV2 Affymetrix probe arrays at 6, 12, 18 and 24 hours after exposure. Mock-treated samples were assessed at 6 and 24 hours. Keywords: time-course
2003-08-09 | GSE448 | GEO
Project description:The transcriptional response to 10 J/m2 of UV-light (254 nm) was assessed with HGU95AV2 Affymetrix probe arrays at 6, 12, 18 and 24 hours after exposure. Mock-treated samples were assessed at 6 and 24 hours. Keywords: time-course
2003-08-09 | GSE449 | GEO