Project description:Transcriptomic analysis of maintenance of dormancy induced by seed development temperature We used Affymetrix GeneChip Wheat Genome Array to detail transcriptional programs underlying maintenance of dormancy induced by seed development tempearture in imbibing seeds of wheat
Project description:Wheat seed germination and seminal root growth can be inhibited by treatment with exogenous ABA We used Affymetrix GeneChip Wheat Genome Array to detail transcriptional programs affected by ABA during imbibition After-ripened seeds imbibed in ABA for 24 h were used for RNA extraction and hybridization on Affymetrix GeneChip. After-ripened seeds were generated by storing dormant seeds at room temperature for 10 months.
Project description:Transcriptional profiling of wheat embryos of developing seed comparing seeds grown at low temperature:13˚C with seeds grown at high temperature:25˚C during seed development using wheat 2 cultivars: Norin61 (N61) and Shiroganekomugi (SK). Goal was to determine the effects of temperature on global gene expression. Two-condition experiment, Low(13˚C) vs. high (25˚C) temperatures during seed development. Time course experiments along with days after anthesis (DAA).
Project description:Transcriptional profiling of wheat embryos of developing seed comparing seeds grown at low temperature:13˚C with seeds grown at high temperature:25˚C during seed development using wheat 2 cultivars: Norin61 (N61) and Shiroganekomugi (SK). Goal was to determine the effects of temperature on global gene expression.
Project description:Wheat seed dormancy is released by after-ripening, and germination and seminal root growth of after-ripened/non-dormant seeds can be inhibited by treatment with exogenous ABA. We used Affymetrix GeneChip Wheat Genome Array to detail transcriptional programs affected by after-ripening of dormant seeds and imbibition of after-ripened seeds in ABA.
Project description:We identified a regulator of Arabidopsis thaliana seed germination: FLOE1 (AT4G28300). We used RNA-seq to uncover genes that are diffenrentially regulated in dry seeds, imbibed seeds and seeds imbibed in 220mM NaCl.
Project description:The present data profile a large scale transcriptome changes associated with variations in seed dormancy level induced by seed development temperature in hexaploid wheat. Seed dormancy is an important trait that inhibits seed germination under optimal conditions and therefore has important implication in preventing the incidence of preharvest sprouting, which refers to the germination of seeds on the mother plant prior to harvest, in wheat. Since preharvest sprouting, which causes a significant reduction in seed yield and quality in wheat, is closely associated with low level of seed dormancy manifested in modern wheat cultivars, it is important to develop wheat cultivars with optimal level of dormancy to enhance wheat yield and quality. Thus, elucidation of the molecular mechanisms that regulate seed dormancy is critical for the development of preharvest sprouting resistant wheat cultivars. The data we are presenting here were generated from total RNA samples extracted from imbibed seeds of a dormant wheat (Triticum aestivum L.) genotype that were developed at different temperatures using the Affymetrix GeneChip Wheat Genome Array. The raw and normalized formats of these data are deposited in the NCBI's gene expression data repository, Gene Expression Ominbus (GEO) with accession number GSE153527.
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
Project description:We identified a regulator of Arabidopsis thaliana seed germination: FLOE1 (AT4G28300). We used RNA-seq to uncover genes that are differentially regulated in dry seeds, imbibed seeds and seeds imbibed in 220mM NaCl in mutant lines complemented with a ΔDS deletion version of FLOE1 (ΔDS) compared to mutants complemented with a WT version of FLOE1 (+WT).
Project description:Objective: Germination of wheat maximizes phytochemical content and antioxidant activity while altering chemical composition, gluten content, and pasting properties. We previously reported marked changes in gene expression in soybean prior to germination before the radicle had grown from a seed. The present study investigated whether imibibition induces similar changes in wheat. Methods: Changes in gene expression profiles of wheat during short-term imbibition (0, 16, and 24 h) were evaluated by DNA microarray analysis. Gene Ontology (GO) analysis was carried out to categorize the function of genes with altered expression. The expression of genes encoding enzymes associated with starch breakdown was evaluated by quantitative real-time PCR, and changes in enzymatic activity were assessed with functional assays. Pasting properties of flour made from wheat seeds imbibed for different times were examined with a Rapid Visco Analyzer. The protein profile was determined by sodium dodecyl sulfate polyacrylamide gel electrophoresis, and gluten content was quantified. Results: The GO analysis revealed that genes related to cellulose and cell wall synthesis were upregulated by imbibition for 16 h whereas those associated with polysaccharide catabolism and nucleosome assembly were upregulated in the subsequent 8 h. α-Amylase expression was highest after 24-h imbibition, with a corresponding increase in enzymatic activity. The pasting properties of wheat flour decreased when seeds were imbibed for over 16 h. Gluten was not degraded until 48 h imbibition. Conclusion: Short-term imbibition of wheat can produce a new type of starch with improved physical and functional properties that may be more appealing to consumers.