Project description:In this project, the transcriptomic data was obtained from the 6-day and 10-day submerged cultures of Cerrena unicolor sp. 87613 under PDA media, respectively. C.unicolor is reported to be an important medicinal fungus as well as an efficient laccase producer. Interestingly, C.unicolor sp.87613 presented a highest laccase production with ~420 U/mL at fermentation day 6, while the laccase production was reduced by ~27% at fermentation day 10. Therefore, these collected data were used to unveil the potential regulatory mechanism of laccase production. Besides, these transcriptomic data also provide essential data source for a better understanding of C.unicolor in various aspects.
Project description:Analysis of transcriptomics and metabolomics reveal glutathione pathway contributed to laccase production of medicinal fungi Cerrena unicolor 87613
Project description:Wood-degrading fungi play a critical role in global carbon cycling, and their varied mechanisms for deconstruction offer pathways for industrial bioconversion. In this study, we used comparative genomics to isolate upregulation patterns among fungi with brown rot (carbohydrate-selective) or white rot (lignin-degrading) nutritional modes. Specifically, we used whole-transcriptome profiling to compare early, middle, and late decay stages on wood wafers, matching differentially-expressed gene (DEG) patterns with fungal growth and enzyme activities. This approach highlighted 34 genes uniquely upregulated in early brown rot stages, with notable candidates involved in generating reactive oxygen species (ROS) as a pretreatment mechanism during brown rot. This approach further isolated 18 genes in late brown rot stages that may be adapted to handle oxidatively-reacted lignocellulose components. By summing gene expression levels in functional classes, we also identified a broad and reliable distinction in glycoside hydrolase (GH) versus lignocellulose oxidative (LOX) transcript counts that may reflect the energy investment burden of lignin-degrading machinery among white rot fungi.
Project description:White-rot basidiomycete fungi are potent degraders of plant biomass with the ability to mineralize all lignocellulose components. Recent comparative genomics studies showed that these fungi use a wide diversity of enzymes for wood degradation. In order to improve our understanding on the enzymatic mechanisms leading to lignocellulose breakdown, we analysed the early response of the white-rot fungus Pycnoporus coccineus CIRM-BRFM310 to various lignocellulosic substrates at two time points; Day 3 and Day 7.
