The interaction between glucose and cytokinin signal transduction pathway in Arabidopsis thaliana
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
SUBMITTER: Ashverya Laxmi
PROVIDER: E-MEXP-3827 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:We isolated mutants in Arabidopsis with enhanced ambient temperature response. Microarray analysis was performed to understand the extent to which ambient temperature transcriptome is perturbed in the mutants in comparison with the WT at non inductive 12 ºC and after shift to inductive 27 ºC for 2 h and 24 h. We performed global transcript profiling to understand the regulation of of gene expression underlying ambient temperature response. Sterilized wild type Arabidopsis Col-0 as well as the arp6-10 mutant seeds were plated on half-strength MS plates without sugar. Plates were incubated at 4 ºC in dark for 48 hours before transfering to 20 ºC with light. 5 day old seedlings were transfered to 12 ºC incubaor with continuous light for 3 days befroe shifting to 27 ºC. Samples (Whole seedlings) were collected before shifting (0 h) and 2 h and 24 h after shifting to 27 ºC by immediately freezing in liquid nitrogen.
2010-01-08 | E-GEOD-18624 | biostudies-arrayexpress
Project description:Dark grown Arabidopsis seedlings (Columbia gl1) were grown in the dark at 23°C for 4 days before adding 90 mM sucrose for 6h. Experiment Overall Design: Arabidopsis thaliana ecotype Columbia glabra (gl1-1) was used in this study. Seeds were sterilized with diluted bleach (10 min incubation in 1.7% sodium hypochlorite, rinsing and washing thoroughly in sterile water), and incubated in 2.5 ml liquid growing medium [Murashige-Skoog (MS) half strength solution] in 6-well plates (fully aerobic, with shaking). Plates were incubated in the darkness at 4°C for 2 days and finally transferred to 23°C for 4 days before the sugar treatments (with 90 mM sucrose, lasting 6h). Two independent, replicated experiments were performed for sucrose treatments. Each independent experiment consisted of four replicated seedlings cultures, pooled after RNA extraction. Experiment Overall Design: AIR EXPERIMENT 1: Control without added sucrose Experiment Overall Design: AIR EXPERIMENT 2: Control without added sucrose Experiment Overall Design: Sucrose 90 mM, 6h treatment in the dark, Biological Replicate 1 Experiment Overall Design: Sucrose 90 mM, 6h treatment in the dark, Biological Replicate 2
2008-06-12 | E-GEOD-3704 | biostudies-arrayexpress
Project description:Arabidopsis wild type and atglr3.3 mutant seedlings were cultured on 0.7% (w/v) agar medium containing half strength of MS basic salt with 1% sucrose (w/v), 5mM MES, pH 5.7. 10-day-old seedlings were equilibrated in the CK buffer for 24 hours. Then, these seedlings were either treated with the CK buffer or the CK buffer containing 100 ?M GSH and 100 ?M Glu for 1 hour, respectively.
2013-09-30 | E-MEXP-3885 | biostudies-arrayexpress
Project description:Microarray experiments were performed on the roots and leaves samples seperately using custom based Nimblegen platform (12plex). This is a time-course study. The plants were grown in controlled growth chamber condiditons. The seeds were sown in sterile petri plates with modified half-strength MS agar medium. The seedlings were then aseptically transferred into sterile polycarbonate container with half-strength MS liquid medium. Seedlings were grown for 2 weeks in an incubator set at 25 oC with constant light and subjected to dehydration for 20min, 40min, 1hr, 2hrs, and 4hrs. We used a hydrophonics system for the trancriptome profiling of tobacco (cv Burley 21) root and leaves samples to study plant reponses during water- deficit or drought. Plants were grown in controlled growth chamber conditions and subjected to water deficit condition after 2 weeks.The plants were transferred to empty containers without touching to nullify any possibility of wounding and harvested subsequently. For 0mins, plants were taken out of the well-watered conditions and transfered to empty boxes and immediately harvested for both tissues and hence called 0-min dehydrated tissue. Similarly other time-points were processed( for instance, 20 min of dehydration, plants were dehydrated for 20 min after being taken out from the container and then harvested). Tissues for three biological replicates and 20 plants per biological replicates were collected for each time-point. RNA was isolated from both tissues using RNeasy Kit from Qiagen and quality was accessed with Nano-drop as well as with Agilent-Bioanalyzer using RNA-600 kit. 20ug of sample was processed at Micro Array Facility.
2015-03-31 | E-GEOD-67434 | biostudies-arrayexpress
Project description:Sugars modulate expression of hundreds of genes in plants. Previous studies on sugar signaling, using intact plants or plant tissues, were hampered by tissue heterogeneity, uneven sugar transport and/or inter-conversions of the applied sugars. This, in turn, could obscure the identity of a specific sugar that acts as a signal affecting expression of given gene in a given tissue or cell-type. To bypass those biases, we have developed a novel biological system, based on stem-cell-like Arabidopsis suspension culture. The cells were grown in a hormone-free medium and were sustained on xylose as the only carbon source. The functional genomics approach was used to identify sugar responsive genes, which rapidly (within 1 h) respond specifically to low concentration (1 mM) of glucose, fructose and/or sucrose. A habituated A. thaliana cell culture grown in a hormone free full strength MS media in the dark was adapted to growth on xylose as the only carbon source in the media.The cells were subjected to a 1 hour treatment with 1 mM of either Fru, Glc, Suc or Xyl (control). The experiments were carried out in 3 biological repeats per treatment. Whole genome expression analysis was conducted by hybridization of the extracted RNA to the Affymetrix Arabidopsis ATH1 Genome Array.
2014-05-16 | E-GEOD-57751 | biostudies-arrayexpress
Project description:We performed a transcriptome profiling on the leaf 3 microdissected from plants with altered cytokinin levels 3h after activation at 9 DAS, when this leaf is normally fully composed of proliferating cells to get an insight into dynamics of molecular network underlying cell responses to CK excess and deficiency in proliferating cells. Seeds of Arabidopsis thaliana transgenic lines (CaMV35S>GR>ipt and CaMV35S>GR>HvCKX2) and corresponding wild-types (Col-0) were sown on nylon meshes placed on half-strength Murashige and Skoog (MS) medium containing 0.5% (w/v) MES and 0.8% (w/v) agar. After 2 days of stratification, plants were removed to growing chambers with 16-h day/8-h night, 21 C and 19 C, respectively, under continuous light (110 mol m-2 s-1). DEX-inducible lines and wild-types were activated at 9 DAS by transfer of nylon meshes to half-strength MS medium supplemented with either 2.5 M DEX dissolved in 5x10-4% (v/v) DMSO or just 5x10-4% (v/v) DMSO (mock). The leaf 3 was dissected from i > 250 individual seedlings per variant on a cooling plate under a stereomicroscope with precision needle and removed into the liquid nitrogen. For RNA-seq 2 biological replicates of WT, ipt and HvCKX2 activated by DEX were used. The RNA was extracted according the same method described for qRT-PCR. RNA sequencing was done by GATC Biotech AG (Konstanz, Germany).
2020-01-09 | E-MTAB-6109 | biostudies-arrayexpress
Project description:Transcriptional profiling of Col4WT and WRKY15 overexpressor (WRKY15OE) plants, grown under controlled and mild salt stress conditions in order to identify molecular mechanisms underlying the increased salt stress sensitivity of WRKY15OE plants. Two genotypes x two conditions experiment, including Arabidopsis Col4WT and WRKY15OE plants grown on half-strength MS plant medium supplemented with 0 or 50 mM NaCl. Three biological replicates. Each sample was hybridized to one GenechipM-BM-. Arabidopsis Tiling 1.0R array.
2012-12-03 | E-GEOD-20494 | biostudies-arrayexpress
Project description:The hemera (hmr) mutant was identified as the first photomorphogenetic mutant with the combination of long hypocotyl and albino phenotypes in the light. Phytochrome-Interacting bHLH transcription Factors (PIFs), which are repressors of photomorphogenesis accumulate in darkness and are degraded in the light in a phytochrome-dependent manner. Two PIFs, PIF1 and PIF3 accumulated in the light in hmr mutants. In order to determine the gene expression of PIF-dependent genes in hmr mutants in the light, we have performed whole-genome expression analysis on two hmr mutants: a null allele, hmr-5; and a weak allele, hmr-22. Wild-type (Col-0) and hmr mutant seeds were surface-sterilized and plated on half-strength Murashige and Skoog (MS) growth medium without sucrose. The seeds were stratified in the dark at 4ºC for 4d. Seedlings were grown in constant red light (Rc, 10?mol/m2/s) at 21°C for 4d.
2014-06-01 | E-GEOD-43311 | biostudies-arrayexpress
Project description:Barley1 GeneChip was used to investigate transcriptome changes associated with boron (B) toxicity in a sensitive barley cultivar (Hordeum vulgare L. cv. Hamidiye). Eight day old aseptically grown seedlings were subjected to 5 or 10 mM boric acid (B(OH)3) treatments for 5 days and expression profiles were determined with DNA microarrays using total RNA from leaf tissues. Surface sterilized seeds were aseptically germinated and grown on half strength Hoaglandâs solution (Hoagland and Arnon, 1950) (pH 5.8) solidified with Phytagel® for 8 days at 23±2ºC with 16 h light (400 µmol mâ2 sâ1) and 8 h dark photo-cycle with 70% relative humidity. Seedlings were transferred to sterile hydroponic cultures for B treatment, which was applied immediately after transfer as half strength Hoaglandâs solution containing either 5 mM B(OH)3 (5B) or 10 mM B(OH)3 (10B) for another 5 days under the same physical conditions. Control (C) groups were transferred to half strength Hoaglandâs solution without extra B(OH)3. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Mehmet Tufan OZ. The equivalent experiment is BB63 at PLEXdb.] Experiment Overall Design: treated or untreated: Control (C)(3-replications); treated or untreated: 5 mM B(OH)3 treatment (5B)(3-replications); treated or untreated: 10 mM B(OH)3 treatment (10B)(3-replications)
2009-01-31 | E-GEOD-14521 | biostudies-arrayexpress
Project description:We treated Arabidopsis seedlings with chitosan and carried out a transcript profiling analysis (GeneChip microarrays) in order to identify genes and transcription factors regulated by chitosan. The results showed that jasmonate and defense responsive genes, camalexin and lignin biosynthetic genes were among genes up-regulated by chitosan. Several transcription factors are also strongly induced by chitosan. The results suggested that chitosan can be used as a strong elicitor of defense pathways. Experiment Overall Design: Arabidopsis thaliana, ecotype Columbia (Col-0) seeds were sterilized for 7 min in 1.7% (v/v) bleach solution, incubated over night in 4% PPM (Plant Preservative Mixture, Plant Cell Technology, Washington DC, USA) in a full strength sterilized Murashige-Skoog (MS) salt solution with gentle shaking. Subsequently, the seeds were rinsed in abundant sterile water and transferred into 2.5 ml liquid growing media (MS half strength solution) with 0.05% PPM in 6-well plates. The plates were incubated in the dark at 4 °C for two days and finally transferred to continuous light (90µm photons/ m-2) with gentle swirling for four days in a plant growth chamber at 22 °C. Experiment Overall Design: . Treatments were performed by comparing a control solution containing the solvent used to solubilize chitosan, and a chitosan solution concentrated 150 µg/ml.
2009-11-10 | E-GEOD-17193 | biostudies-arrayexpress