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JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings [light treatments]

ABSTRACT: We have reported that JMJ17 act as a repressor to a set of genes involved in photosynthesis, tetrapyrrole biosynthesis and light response related development in the dark, while during dark to light irradiation it acts as an activator of same set of genes.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE140296 | GEO | 2019/11/14

REPOSITORIES: GEO

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JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings

Project description:We have reported that, JMJ17 regulates photosynthesis, tetrapyrrole biosynthesis, light responsive and stress related genes in Arabidopsis. JMJ17 directly associates and modulates H3K4me3 level at chromatin region of PORC, HEMA1, CHLI1, CHLM and LHCA4 genes and repress their expression in the dark.

2019-10-31 | GSE139586 | GEO

JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings [light treatments]

Project description:JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings [light treatments]

| PRJNA589477 | ENA

Light regulation of chlorophyll and glycoalkaloid biosynthesis during tuber greening of potato S. tuberosum

Project description:Potato, S. tuberosum, is one of the most important global crops, but has high levels of waste due to tuber greening under light, which is associated with the accumulation of neurotoxic glycoalkaloids. Here, we have investigated the effect of monochromatic far-red, red, and blue light on the regulation of chlorophyll and glycoalkaloid accumulation in tubers of a commercial variety, King Edward. Transcriptomic analysis of tubers exposed to red, blue, and white light showed that light induction of photosynthesis and tetrapyrrole-related genes grouped into two distinct patterns with one group showing much stronger induction in blue at 6 h and 24 h and a second group showing only red induction at 24 h.

2020-02-25 | E-MTAB-7707 | biostudies-arrayexpress

JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings

Project description:JMJ17, a H3K4 demethylase, regulates chlorophyll biosynthesis during the transition from dark to light in Arabidopsis seedlings

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Light versus Dark gene expression in SAR11

Project description:We investigated the transcriptional response of cand. Pelagibacter ubique cultures to light and dark when grown under carbon replete and deplete conditions. Results: During exponential phase, few genes were differentially transcribed between light:dark growth conditions. In stationary phase, a high proportion (9.7%) of coding sequences were found differentially expressed between treatments; 4.7% being up-regulated in the light (n=64) and 4.9% being up-regulated in the dark (n=67). Several components of the oxidative phosphorylation pathway were up-regulated in the dark, supporting physiological data showing higher respiration rates in darkness than in the light under starvation conditions. We also observed up-regulation of a proton translocating pyrophosphate synthase (SAR11_1040), which may be an additional energy production mechanism utilized by SAR11 cells in the dark. Finally, we noted the up-regulation of pili formation genes in the array data, consistent with the observation of pili in dark grown cells via electron microscopy.

2011-12-31 | GSE24134 | GEO

Genome wide rhythmic transcription under light/dark cycles in Ostreococcus tauri

Project description:Genome wide rhythmic transcription under light/dark cycles is associated with sequential transcription of specific biological processes genes in Ostreococcus tauri. Transcriptional profiling of Ostreococcus tauri under light/dark cycles. In order to identify genes with a diurnal rhythm, cells entrained under 12:12 light/dark cycles were sampled every 3 hours for 27 hours with two overlapping time points at Time 9 (Light ON at Time 9; Light OFF at Time 21) in 3 independent experiments.

2010-04-20 | GSE16422 | GEO

mRNA-seq of Physcomitrella protonema responding to 1 hr red light in wild type and the phytochrome-deficient mutant

Project description:The red/far-red light photoreceptor phytochrome mediates photomorphological responses in plants. For light sensing and signaling, phytochromes need to associate with open-chain tetrapyrrole molecules as the chromophore. Biosynthesis of tetrapyrrole chromophores requires members of ferredoxin-dependent bilin reductases (FDBRs). There are two FDBRs in Physcomitrella patens, HY2 and PUBS. Knocking out both generates the phytochrome-deficient mutant. Datasets here provides the transcriptome profiling of Physcomitrella protonema grown in the dark and exposed to one hour red light. Wild type and the hy2 pubs double mutant were used to dissect the regulated genes of moss phytochromes. For details, please see PMID: .

2012-05-08 | GSE36274 | GEO

mRNA-seq of Physcomitrella protonema responding to 1 hr red light in wild type and the phytochrome-deficient mutant

2012-05-08 | E-GEOD-36274 | biostudies-arrayexpress

Light versus Dark gene expression in SAR11

2011-12-31 | E-GEOD-24134 | biostudies-arrayexpress

RNA-Seq Analysis of Wild Type and Scn5aΔ/+ left ventricle at dark:light and light:dark phase transitions

Project description:We investigated differences in gene expression in left ventricular tissue from WT and ΔKPQ (Scn5aΔ/+) mice. Tissue was collected diurnally at the phase transitions from dark to light (D:L) and light to dark (L:D). We employed RNAseq (Novogene) to examine potential variances between the two strains of mice, as well as, any differences in expression at the two time points. RNAseq provided a snapshot of gene expression which revealed an intact molecular clock for both strains. Previous studies have demonstrated circadian peak or trough at the light phase changes in cardiac tissue in mice for many core molecular clock components. Similar to these studies both strains demonstrated a significant difference in expression between core molecular clock genes Bmal1, Clock, Per1, Per2, Per3 assessed at the phase transitions. This assessment revealed 39 diurnally expressed genes. To our surprise, only 6 genes were differently expressed between the two strains of mice.

2020-03-06 | GSE146405 | GEO

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