Project description:Basidiomycetes produce a wide range of industrially relevant natural products. One of the main classes of natural products isolated from fungi are terpenoids, a highly diverse group of secondary metabolites, many of which are bioactive and have been adapted for pharmaceutical purposes. The discovery of a suite of novel sesquiterpene synthases from Omphalotus olearius via genome sequencing and bioinformatic analyses has recently been described. Here, the expression, purification and crystallization of one of these enzymes (Omp6), a protoilludene synthase, is reported. A native crystal diffracted to a resolution of 2.9 Å and belonged to space group P21, with unit-cell parameters a = 43.67, b = 76.76, c = 107.22 Å, α = γ = 90, β = 95°. A diffraction data set was collected on a home-source Rigaku/MSC MicroMax-007 X-ray generator.
Project description:The secondary metabolome of Basidiomycota represents a largely uncharacterized source of pharmaceutically relevant natural products. Terpenoids are the primary class of bioactive compounds isolated from mushrooms. The Jack O'Lantern mushroom Omphalotus olearius was identified 50 years ago as a prolific producer of anticancer illudin sesquiterpenoids; however, to date there have been exceptionally few studies into the biosynthesis of these important compounds. Here, we report the draft genome sequence of O. olearius, which reveals a diverse network of sesquiterpene synthases and two metabolic gene clusters associated with illudin biosynthesis. Characterization of the sesquiterpene synthases enabled a comprehensive survey of all currently available Basidiomycota genomes, thereby creating a predictive resource for terpenoid natural product biosynthesis in these organisms. Our results will facilitate discovery and biosynthetic production of unique pharmaceutically relevant bioactive compounds from Basidiomycota.
Project description:To investigate the regulatory mechanisms of GmZF392, GmZF351 and GmNFYA in oil accumulation, seeds at H3 stage of transgenic plants and JACK plants were collected for RNA extraction and sequencing. Before sequencing, qPCR showed that expression of GmZF392, GmZF351 and GmNFYA increased to about 10, 109 and 7 times respectively compared to JACK. Clean reads of RNA-sequencing were mapped to soybean genome and genes that had a 1.5 fold increase or 50% decrease, compared to JACK, were defined as differential expressed genes (DEGs).
