Next Generation Sequencing Facilitates Comparative Transcriptomes Analysis for Saccharomyces cerevisiae lines generated by SCRaMbLE

Purpose: According to comparative transcriptomes data, the differentially expressed genes within these selected scrambled yeast strains can be digged out and further analyzed, seeking potential targets that were tuned drastically and might improve β-carotene production when modified. Methods: mRNA profiles of two Saccharomyces cerevisiae strains H0, S3 (each named as yJBH000 and yJBH012 in related manuscript) were generated in triplicate using illumina. Sequencing libraries were generated using NEBNext® Ultra™ RNA Library Prep Kit for Illumina® (NEB, USA) and index codes were added to each sample. The library preparations were sequenced on an Illumina Hiseq 4000 platform. 150 bp paired-end reads were generated as raw data. The read counts for each gene in the genome were summarized as processed data. Results: The yJBH012 had an obviously different pattern of global transcription as compared with the control yJBH000. The upregulation of 589 genes and down regulation of 236 genes were observed in this analysis. The transcirptomes of different Saccharomyces cerevisiae strains were sequenced by Illumina, giving both unchanged genes and differentially expressed genes that would affect β-carotene production.