Expression data from barley maturing and germinating grains
Ontology highlight
ABSTRACT:
ORGANISM(S): Hordeum vulgare
PROVIDER: GSE9365 | GEO | 2007/12/20
SECONDARY ACCESSION(S): PRJNA103067
REPOSITORIES: GEO
Similar Datasets
Project description:Plant seeds prepare for germination already during seed maturation. We performed a detailed transcriptome analysis of barley grain maturation, desiccation and germination in two tissue fractions (endosperm/aleurone = e/a and embryo = em) using the Affymetrix barley1 chip. Experiment Overall Design: Barley developing and germinating seeds were harvested at different time points after flowering (developing) and imbibition (germinating). To further disseect the influence of different tissues, seeds were dissecte and tissues were analyzed individually.
2008-06-16 | E-GEOD-9365 | biostudies-arrayexpress
Project description:The phytohormone gibberellic acid (GA) is well known to promote seed germination in plants. One of its functions is to stimulate the production of hydrolytic enzymes in the aleurone and their secretion to the adjacent endosperm. The storage in the endosperm is thus degraded by these hydrolases into small molecules, which are utilized as nutrients for embryo growth to establish the young seedling. ABA in contrast plays antagonistic role to GA to keep seed in dormancy. Cereal aleurone has been established as a model system to investigate giberrellin (GA) and abscisic acid (ABA) responses. Using Barley 1 GeneChip, we examined the mRNA accumulation of over 22 000 genes in barley aleurone treated with GA, ABA, GA plus ABA, and sln1 mutant.
2010-01-01 | GSE18758 | GEO
Project description:The phytohormone gibberellic acid (GA) is well known to promote seed germination in plants. One of its functions is to stimulate the production of hydrolytic enzymes in the aleurone and their secretion to the adjacent endosperm. The storage in the endosperm is thus degraded by these hydrolases into small molecules, which are utilized as nutrients for embryo growth to establish the young seedling. ABA in contrast plays antagonistic role to GA to keep seed in dormancy. Cereal aleurone has been established as a model system to investigate giberrellin (GA) and abscisic acid (ABA) responses. Using Barley 1 GeneChip, we examined the mRNA accumulation of over 22 000 genes in barley aleurone treated with GA, ABA, GA plus ABA, and sln1 mutant. Barley aleurone tissues were separated from half-seed without embryo. Three independent RNA samples for each treatment including the control without any hormone were extracted and hybridized onto Affymetrix microarrays. We also did microarray in three replications for sln1 mutant aleurone without hormone treatment.
2010-01-01 | E-GEOD-18758 | biostudies-arrayexpress
Project description:RNAseq from Medicago truncatula early post germination (1 and 5mm radicle seeds) from dissected radicles and cotyledons with and without PEG treatment to identify genes induced during the reinduction of the desiccation tolerance at early germination. Dessication tolerant tissues were radicles from 1mm radicle seeds treated with PEG: R1P, and cotyledons from 1- and 5-mm radicle seeds treated or not with PEG: C1, C5, C1P, C5P and desiccation sensitive tissues were radicles from 1mm radicle seeds (R1) and 5mm radicle seeds (R5).
2022-10-03 | GSE214468 | GEO
Project description:A spatial resolved transcriptome for germinating barley grain was obtained for over 14,000 genes at 0, 1, 3 6 and 24 hours after imbibition. The spatial expression of a number of genes was validated using in-situ PCR, quantitative comparison to bulk RNA-seq reveal good correlations, despite the differences in the methodologies, and marker gene definition for tissues/clusters was consistent with previous gene specific studies. Targeted analysis of genes encoding aquaporins, crucial for water and ion movement during germination, revealed specific spatial expression patterns for gene members, and the tissue specific changes in gene members over time. Highly restricted spatial (and temporal) expression patterns were observed for genes encoding cell wall and transcription factors, e.g. one of the strongest expressed transcription factors was a bZIP family member that responds to germinating promoting Karrikin. It’s expression was restricted to the scutellum and the adjacent endosperm (0-3 HAI) and declined afterwards. Discovery-based bio-informatic approaches revealed thousands of genes displayed a spatially restricted pattern within tissues, with gene ontology revealing enriched categories such as auxin related functions of transport and response factors displaying distinct spatial expression patterns in tissues. This provides unprecedented spatial resolved cellular map for germination and specific genes to target for functional genomics to define cellular restricted processes in tissues during germination.
2023-08-30 | GSE218970 | GEO
Project description:In depth temporal profiling of transcript changes at 10 time points during germination in Arabidopsis seed was carried out. The time course utilised, encompassed seed maturation, stratification, germination and post-germination and provided a global investigation into the tightly regulated, phasic changes that define seed germination. A previously unidentified transient expression pattern was identified for a group of genes, whereby a significant rise in abundance was observed at the end of stratification and significantly lower expression observed up to 6 hours later.
2011-09-09 | GSE30223 | GEO
Project description:The temporal pattern of accumulation of hordein storage proteins in developing barley grains was studied by enzyme-linked immunosorbent assay (ELISA), western blot and liquid chromatography tandem mass spectrometry (LC-MS/MS). Hordein accumulation was compared to the pattern seen for two abundant control proteins, serpin Z4 (an early accumulator) and lipid transferase protein (LTP1, a late accumulator). Hordeins were detected from six days post-anthesis (DPA) and peaked at 30 DPA. Changes in fresh weight indicate that desiccation begins at 20 DPA and by 37 DPA fresh weight had decreased by 35%. ELISA analysis of hordein content, expressed on a protein basis, increased to a maximum at 30 DPA followed by a 17% decrease by 37 DPA. The accumulation of 39 tryptic and 29 chymotryptic hordein peptides representing all classes of hordein was studied by LC-MS/MS. Most peptides increased to a maximum at 30 DPA, and either remained at the maximum or did not decrease significantly. Only five tryptic peptides, members of the related B1- and γ1-hordeins decreased significantly by 21-51% at 37 DPA. Thus, the concentration of some specific peptides wasere reduced while remaining members of the same family were not affected. The N-terminal signal region was removed by proteolysis during co-translation. , evidenced by a notable absence of the predicted peptides despite near complete protein sequence coverage. In addition to a suite of previously characterised hordeins, two novel barley B-hordein isoforms and two avenin-like proteins (ALPs), mapping to wheat low molecular weight glutenins (LMW-GS-like B-hordeins), and two avenin-like proteins (ALPs) sharing homology with wheat ALPs, were identified. These identified isoforms have not previously been mapped in the barley genome. Cereal storage proteins provide significant nutritional content for human consumption and seed germination. In barley, the bulk of the storage proteins are due tocomprise the hordein family and the final hordein concentration affects the quality of baked and brewed products. Hordeins are members of the gluten protein family and consumption can trigger health conditions such as coeliac disease, non-coeliac gluten sensitivity, and gluten allergy. It is therefore important to study the accumulation of these proteinshordeins as this knowledge may assist plant breeding for improved health outcomes (by minimizing triggering of detrimental immune responses), nutrition and food reduced coeliac reactivity.processing properties.
2019-04-18 | PXD013331 | Pride
Project description:Malting is seed germination under strictly controlled environmental conditions. Malting quality is a complex phenotype that combines a large number of interrelated components, each of which shows complex inheritance. Currently, only a few genes involved in determining malting quality have been characterized. This study combined transcript profiling with phenotypic correlations to identify candidate genes for malting quality. We used the Barley1 GeneChip® array to identify differentially expressed genes in four malting stages relative to dry seed in the barley variety Morex, and to identify differentially expressed genes among four barley varieties. Keywords: time course and genotype differences
2009-03-05 | GSE11200 | GEO
Project description:Transcriptomic analysis of the embryo and endosperm tissue of maturing wheat seeds of two geneotypes, namely AC Domain and RL4452, was performed We used Affymetrix GeneChip Wheat Genome Array to detail transcriptional programs and regulatory networks underlying seed maturation/desiccation in wheat
2017-09-01 | GSE83077 | GEO
Project description:What methylation changes are occurring during seed development largely remains unknown. To uncover the possible role of DNA methylation throughout all of seed development - from fertilization through dormancy and post-germination in soybean, we characterized the methylome of whole seeds representing the differentiation (GLOB and COT stages), maturation (early- [EM], mid- [B1] and late- [AA1] maturation stages), dormancy (DRY stage), and post-germination (seedling) phases of soybean seed development using Illumina sequencing. In addition, we characterized the methylome of the cotyledons of germinated seedling to examine methylation differences before and after germination.
2011-12-22 | GSE34637 | GEO