In order to identify eQTL in developing seeds of Arabidopsis thaliana 116 Arabidopsis thaliana recombinant inbred lines (C24/Col 0 and Col 0/C24, Trjk et al. 2006) were analysed.
No associated publication
Specimen part
View SamplesNitrogen availability in the soil is a major determinant of crop yield. While the application of fertilizer can substantially increase the yield on poor soils, it also causes nitrate pollution of water resources and high costs for farmers. Increasing the nitrogen use efficiency in crop plants is a necessary step to implement low input agricultural systems. We exploited the genetic diversity present in the world-wide Arabidopsis thaliana population to study adaptive growth patterns and changes in gene expression associated with chronic low nitrate stress, with the aim to identify biomarkers associated with good plant performance under low nitrate availability.
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Age, Specimen part, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Tailoring high-density oligonucleotide arrays for transcript profiling of different Arabidopsis thaliana accessions using a sequence-based approach.
Specimen part
View SamplesIn order to identify differentially expressed genes in developing seeds of Arabidopsis thaliana three different stages of seed development were analysed (9-10, 10-11 and 12-13 days after flower opening) for two Arabidopsis thaliana accessions, Col-0 and C24. For each stage and accession three biological replicates were analysed.
Tailoring high-density oligonucleotide arrays for transcript profiling of different Arabidopsis thaliana accessions using a sequence-based approach.
Specimen part
View SamplesIn order to identify differentially expressed genes in developing seeds of Arabidopsis thaliana three different stages of seed development were analysed (9-10, 10-11 and 12-13 days after flower opening) for two Arabidopsis thaliana accessions, Col-0 and C24. For each stage and accession three biological replicates were analysed.
Tailoring high-density oligonucleotide arrays for transcript profiling of different Arabidopsis thaliana accessions using a sequence-based approach.
Specimen part
View SamplesThe hypothesis whether CaCl2 seed treatment prior to sowing (osmopriming) can enhance drought stress tolerance, and/or alleviate the effect on plant growth was tested.
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No sample metadata fields
View SamplesTo study the splicing factor role of ZmGRP1
No associated publication
Sex, Specimen part, Disease, Disease stage, Cell line, Treatment
View SamplesEffects of loss-of-function of AtMIKC* MADS-box genes on the mature Arabidopsis pollen transcriptome.
MADS-complexes regulate transcriptome dynamics during pollen maturation.
Age, Specimen part
View SamplesCuticular wax is a major composition of plant surface cuticle, which exerts crucial functions in optimizing plant growth. Histone acetylation regulates gene expression of diverse biological processes, but little is known about its role in cuticular wax synthesis. Here we observed that mutation of Arabidopsis histone acetyltransferase GCN5 gene impaired stem cuticular wax accumulation. Furthermore, three target genes of GCN5 (CER3, CER26 and CER1-L1) were identified by RNA-Seq and ChIP assays. Consistently, H3K9/14 acetylation levels in promoter regions of CER3, CER26 and CER1-L1 were significantly decreased in gcn5 as compared to wild type. Notably, overexpression of CER3 in the gcn5 mutant restored the stem cuticular wax accumulation. Collectively, these data demonstrate that Arabidopsis GCN5 is involved in stem cuticular wax accumulation by modulating CER3 expression via H3K9/14 acetylation, which present evidence that histone acetylation plays an important role in cuticular wax biosynthesis
No associated publication
Specimen part
View SamplesDespite their importance, plant MAP kinase targets are still poorly elucidated. Here, the specific in vivo interaction of an ethylene response factor (ERF104) with the Arabidopsis MAP kinase, MPK6, is shown by fluorescence resonance energy transfer. The interaction, which is lost within minutes after treatment with the flagellin-derived flg22 peptide, is dependent on both MPK6 kinase activity and rapid ethylene signaling initiated downstream of MPK6 activation. ERF104 is an MPK6 substrate and phosphorylation site mutations affected its stability. ERF104 activates promoters with GCC elements. This was evident from microarray data of overexpressing transgenic plants, where promoters of up regulated genes contain GCC motifs and chromatin immunoprecipitation showing ERF104 association with PDF1.2 promoter. The ERF104 overexpressor did not affect biotrophic bacteria proliferation but was more susceptible to necrotrophic Botrytis cinerea. Microarray performed with erf104 or mpk6 revealed only a limited number of flg22-induced genes that require these elements - possibly as a
Flg22 regulates the release of an ethylene response factor substrate from MAP kinase 6 in Arabidopsis thaliana via ethylene signaling.
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