Project description:This study focused on the effects of NaCl to squalene metabolism in Thraustochytrium sp. ATCC26185. The strain was cultured in different NaCl concentration medium, cells with highest specific squalene productivity were collected for proteomic analysis.
Project description:Here we show for the first time that vesicle fusion is one of multiple pathways in plant cells involved in terpene emissions. We demonstrate a positive feedback on terpene production when vesicle fusion is inhibited in cells producing high levels of terpenes, which relates to an induced proteasome malfunction.
Project description:In this study, through computational modeling and synthetic biology tools, we identified and overcame a key flux controlling node in MEP-derived terpene biosynthesis in cyanobacteria. This strategy bypasses the limitation in traditional stepwise metabolic engineering, and led to significantly higher terpene productivity. Moreover, our results revealed photosynthesis limitations during high level of terpene production. We suggest that fine-tuning energy and reductant requirement could be a key factor in establishing a viable ‘non-native’ terpene sink in photosynthetic systems.
Project description:Vitis vinifera is widely grown worldwide for making wine and for use as table grapes. Of the existing cultivars, some have a floral and fruity flavour, referred to as a Muscat flavour. It is well-documented that this flavour originates from a series of terpene compounds, but the mechanism of terpene content differences among the Muscat-type cultivars remains unclear. Transcript and terpene metabolite profiles were integrated to elucidate the molecular mechanism of this phenomenon. In this research, three genotypes with different aromatic strengths were investigated by RNA sequencing. A total of 27 fruit samples from three biological replicates were sequenced on Illumina HiSeq 2000 at three stages, corresponding to the veraison; berries had intermediate Brix value and were harvest-ripe. After quality assessment and data clearance, a total of 254.18 Gb of data with more than 97% Q20 bases were obtained, approximately 9.41 Gb data were generated per sample. These results will provide a valuable dataset for the discovery of the mechanism of terpene biosynthesis.
