Project description:What methylation changes are occurring in different compartments of early maturation stage seed largely remains unknown. To uncover the possible role of DNA methylation in different compartments of early maturation stage seed, we characterized the methylome of two major compartments in embryonic cotyledon: cotyledon abaxial parenchyma (EM-COT-ABPY) and cotyledon adaxial parenchyma (EM-COT-ADPY) using Illumina sequencing. Illumina sequencing of bisulfite-converted genomic DNA from cotyledon abaxial parenchyma (EM-COT-ABPY) and cotyledon adaxial parenchyma (EM-COT-ADPY) compartments.
Project description:To understand the molecular events underlying seed maturation, quiescence and germination, we performed transcriptome analysis of soybean (Glycine max) embryos at four seed developmental stages (cotyledon, early, mid and late maturation), mature dry seeds, and seedlings, eight days after seed sowing.
Project description:We collected bending-cotyledon seed compartments from 7 micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments from seeds containing bending cotyledon stage embryos. For the purposes of this study we captured 6 compartments: embryo proper, mycropylar endosperm, cellularized peripherial endosperm, chalazal endosperm, chalazal seed coat and seed coat, in addition to serial sections encompasing the entire bending-cotyledon stage seed.
Project description:Sacred lotus (Nelumbo nucifera) belongs to Nelumbonaceae family. Its seeds are widely consumed in Asia countries as snacks or even medicine. Besides the market values, lotus seed also plays crucial roles in lotus life cycle. Consequently, it is essential to gain a comprehensive understanding on the development of lotus seed. During its development, lotus seed undergoes cell division, expansion, reserve accumulation, desiccation and maturation phases. We observed the morphological and biochemical changes of lotus seed from 10 to 25 days after pollination (DAP) which was corresponding to the reserve synthesis and accumulation phase. The volume of the seed expanded until 20 DAP with the color of the seed coat changing from yellow-green to dark green and gradually faded again. Starch and protein rapidly accumulated from 15 to 20 DAP. To further reveal the metabolism adaptation, primary metabolites and proteins profiles were obtained from the mass spectrometry based platforms. Metabolites and enzymes involved in sugar metabolism, glycolysis, TCA cycle and amino acids metabolism schematized on their biosynthetic pathways. Both metabolic and proteomic profiles indicated more active metabolism from 10 to 15 DAP than after 20 DAP. The results provide a frame of reference for the evaluation of primary metabolism during lotus seed development.
Project description:To understand the processes governing soybean seed development, we profiled the mRNA transcriptome and chromatin accessibility of cotyledon-stage seeds at the single-nucleus level.
Project description:We collected bending cotyledon seed compartments from 7 micron paraffin sections using the Leica LMD6000 system in order to identify the mRNAs present in different compartments from seeds containing linear cotyledon stage embryos. For the purposes of this study we captured 5 compartments: embyro proper, cellularized peripherial endosperm, chalazal endosperm, chalazal seed coat and seed coat, in addition to serial sections encompasing the entire linear cotyledon stage seed. Bending cotyledon stage seed compartments were isolated using the LMD6000 system. Total RNA was amplified and hybridized with Affymetrix ATH1 Arabidopsis array for 14 samples (embryo proper, micropylar endosperm, peripherial endosperm, chalazal endosperm, chalazal seed coat, seed coat and whole seeds, 2 biological replicates each).
Project description:The nuclei of Glycine max from different tissues were collected. The samples were: soybean seed mid-maturation stage (10mm), seed late cotyledon stage (5mm), seed early cotyledon stage (3mm), seed heart stage (1mm), soybean green pods without seeds (stage), soybean flower bud (early flowering stage), soybean shoot apical meristem (stage), soybean trifoliate leaf (R5 stage), and soybean true leave (stage). The library construction was performed applying 10 Genomics technology.
Project description:Soybean is one of the most economically important crops in the world. The cotyledon is the nutrient storage area in seeds, and it is critical for seed quality and yield. Cotyledon mutants are important for the genetic dissection of embryo patterning and seed development.Here, we characterised a soybean curled-cotyledon (cco) mutant. Compared with wild-type (WT), the entire embryos of cco mutant resembled the “tail of swallow”. To explore the molecular mechanisms underlying soybean cotyledon development, we executed RNA-Seq using the Illumina HiSeq2000 system.
Project description:There are four major seed developmental phases in Arabidopsis seed development: morphogenesis, maturation, dormancy and germination. What methylation changes occurring in the different phases, if any, remains unknown. To uncover the possible role of DNA methylation in different parts of the seed, we characterized the methylome of four major seed developmental phases of Arabidopsis using Illumina sequencing: global stage (glob) and linear cotyledon stage (lcot) for morphogenesis phase; mature green stage (mg) and post mature green stage (pmg) for maturation phase; dry seed (dry) for dormancy phase; leaves (leaf) from 4 week plant for vegetative tissues. Illumina sequencing of bisulfite-converted genomic DNA from six seed developmental stages in Arabidopsis: global stage (glob), linear cotyledon stage (lcot), mature green stage (mg), post mature green stage (pmg), dry seed (dry) and leaves (leaf) from 4 week plant.