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Title: Engineered CRISPR/Cas9 system for multiplex genome engineering of polyploid industrial yeast strains

Journal Article · · Biotechnology and Bioengineering
DOI:https://doi.org/10.1002/bit.26569· OSTI ID:1436578

Abstract The CRISPR/Cas9 system has been widely used for multiplex genome engineering of Saccharomyces cerevisiae . However, its application in manipulating industrial yeast strains is less successful, probably due to the genome complexity and low copy numbers of gRNA expression plasmids. Here we developed an efficient CRISPR/Cas9 system for industrial yeast strain engineering by using our previously engineered plasmids with increased copy numbers. Four genes in both a diploid strain (Ethanol Red, 8 alleles in total) and a triploid strain (ATCC 4124, 12 alleles in total) were knocked out in a single step with 100% efficiency. This system was used to construct xylose‐fermenting, lactate‐producing industrial yeast strains, in which ALD6 , PHO13 , LEU2 , and URA3 were disrupted in a single step followed by the introduction of a xylose utilization pathway and a lactate biosynthetic pathway on auxotrophic marker plasmids. The optimized CRISPR/Cas9 system provides a powerful tool for the development of industrial yeast based microbial cell factories.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States); Center for Advanced Bioenergy and Bioproducts Innovation (CABBI), Urbana, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0018420
OSTI ID:
1436578
Alternate ID(s):
OSTI ID: 1424826
Journal Information:
Biotechnology and Bioengineering, Vol. 115, Issue 6; ISSN 0006-3592
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

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Efficient production of S ‐adenosyl‐ l ‐methionine from dl ‐methionine in metabolic engineered Saccharomyces cerevisiae journal September 2019
A CRISPR–Cas9 system for multiple genome editing and pathway assembly in Candida tropicalis journal November 2019
CRISPR/Cas9‐RNA interference system for combinatorial metabolic engineering of Saccharomyces cerevisiae journal May 2019
The renaissance of yeasts as microbial factories in the modern age of biomanufacturing journal September 2019
Synthetic microbial consortia for biosynthesis and biodegradation: promises and challenges journal July 2019
New Applications of Synthetic Biology Tools for Cyanobacterial Metabolic Engineering journal February 2019
CRISPR-Cas9 Approach Constructing Cellulase sestc-Engineered Saccharomyces cerevisiae for the Production of Orange Peel Ethanol journal October 2018