DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Engineering transcriptional regulation of pentose metabolism in Rhodosporidium toruloides for improved conversion of xylose to bioproducts

Journal Article · · Microbial Cell Factories

Abstract Efficient conversion of pentose sugars remains a significant barrier to the replacement of petroleum-derived chemicals with plant biomass-derived bioproducts. While the oleaginous yeast Rhodosporidium toruloides (also known as Rhodotorula toruloides ) has a relatively robust native metabolism of pentose sugars compared to other wild yeasts, faster assimilation of those sugars will be required for industrial utilization of pentoses. To increase the rate of pentose assimilation in R. toruloides, we leveraged previously reported high-throughput fitness data to identify potential regulators of pentose catabolism. Two genes were selected for further investigation, a putative transcription factor (RTO4_12978, Pnt1) and a homolog of a glucose transceptor involved in carbon catabolite repression (RTO4_11990). Overexpression of Pnt1 increased the specific growth rate approximately twofold early in cultures on xylose and increased the maximum specific growth by 18% while decreasing accumulation of arabitol and xylitol in fast-growing cultures. Improved growth dynamics on xylose translated to a 120% increase in the overall rate of xylose conversion to fatty alcohols in batch culture. Proteomic analysis confirmed that Pnt1 is a major regulator of pentose catabolism in R. toruloides. Deletion of RTO4_11990 increased the growth rate on xylose, but did not relieve carbon catabolite repression in the presence of glucose. Carbon catabolite repression signaling networks remain poorly characterized in R. toruloides and likely comprise a different set of proteins than those mainly characterized in ascomycete fungi.

Research Organization:
Environmental Molecular Sciences Laboratory (EMSL), Richland, WA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC05-76RL01830; NA0003525
OSTI ID:
1993646
Report Number(s):
PNNL-SA--177272; SAND--2023-09654J; 144; PII: 2148
Journal Information:
Microbial Cell Factories, Journal Name: Microbial Cell Factories Journal Issue: 1 Vol. 22; ISSN 1475-2859
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (59)

Enabling xylose utilization in Yarrowia lipolytica for lipid production journal July 2016
The baffled microtiter plate: Increased oxygen transfer and improved online monitoring in small scale fermentations journal August 2009
Exploiting nonionic surfactants to enhance fatty alcohol production in Rhodosporidium toruloides journal February 2020
A comparative analysis of computational approaches to relative protein quantification using peptide peak intensities in label-free LC-MS proteomics experiments journal November 2012
Cloning and evaluation of different constitutive promoters in the oleaginous yeast Rhodosporidium toruloides : Evaluation of five constitutive promoters in journal January 2016
The zinc cluster transcriptional regulator Asg1 transcriptionally coordinates oleate utilization and lipid accumulation in Saccharomyces cerevisiae journal February 2016
Metabolic engineering of the oleaginous yeast Rhodosporidium toruloides IFO0880 for lipid overproduction during high-density fermentation journal September 2016
Production of d-arabitol from d-xylose by the oleaginous yeast Rhodosporidium toruloides IFO0880 journal November 2017
Induction of resistance mechanisms in Rhodotorula toruloides for growth in sugarcane hydrolysate with high inhibitor content journal November 2021
Fatty alcohols production by oleaginous yeast journal August 2015
Rhodotorula toruloides: an ideal microbial cell factory to produce oleochemicals, carotenoids, and other products journal December 2021
Insights from enzymatic degradation of cellulose and hemicellulose to fermentable sugars– a review journal March 2020
Adaptive laboratory evolution of Rhodosporidium toruloides to inhibitors derived from lignocellulosic biomass and genetic variations behind evolution journal August 2021
MASIC: A software program for fast quantitation and flexible visualization of chromatographic profiles from detected LC–MS(/MS) features journal June 2008
Harnessing xylose pathways for biofuels production journal June 2019
Direct production of fatty alcohols from glucose using engineered strains of Yarrowia lipolytica journal June 2020
Engineering high-level production of fatty alcohols by Saccharomyces cerevisiae from lignocellulosic feedstocks journal July 2017
Normalization Approaches for Removing Systematic Biases Associated with Mass Spectrometry and Label-Free Proteomics journal February 2006
Combined Statistical Analyses of Peptide Intensities and Peptide Occurrences Improves Identification of Significant Peptides from MS-Based Proteomics Data journal November 2010
ProteomeXchange provides globally coordinated proteomics data submission and dissemination journal March 2014
MS-GF+ makes progress towards a universal database search tool for proteomics journal October 2014
EUF1 – a newly identified gene involved in erythritol utilization in Yarrowia lipolytica journal October 2017
DMR (deacetylation and mechanical refining) processing of corn stover achieves high monomeric sugar concentrations (230 g L −1 ) during enzymatic hydrolysis and high ethanol concentrations (>10% v/v) during fermentation without hydrolysate purification or concentration journal January 2016
Sustainable bioproduction of the blue pigment indigoidine: Expanding the range of heterologous products in R. toruloides to include non-ribosomal peptides journal January 2019
Engineering of yeast hexose transporters to transport D-xylose without inhibition by D-glucose journal March 2014
The regulatory and transcriptional landscape associated with carbon utilization in a filamentous fungus journal February 2020
Two glucose transporters in Saccharomyces cerevisiae are glucose sensors that generate a signal for induction of gene expression. journal October 1996
Saccharomyces cerevisiae Forms d-2-Hydroxyglutarate and Couples Its Degradation to d-Lactate Formation via a Cytosolic Transhydrogenase journal March 2016
DAnTE: a statistical tool for quantitative analysis of -omics data journal May 2008
Improved quality control processing of peptide-centric LC-MS proteomics data journal August 2011
Cha4p of Saccharomyces cerevisiae Activates Transcription Via Serine/Threonine Response Elements journal October 1996
FastTree: Computing Large Minimum Evolution Trees with Profiles instead of a Distance Matrix journal April 2009
UniProt: the universal protein knowledgebase in 2021 journal November 2020
Interactive Tree Of Life (iTOL) v5: an online tool for phylogenetic tree display and annotation journal April 2021
MAFFT: a novel method for rapid multiple sequence alignment based on fast Fourier transform journal July 2002
MycoCosm portal: gearing up for 1000 fungal genomes journal December 2013
Metabolic Engineering of Ammonium Assimilation in Xylose-Fermenting Saccharomyces cerevisiae Improves Ethanol Production journal August 2003
Upc2p and Ecm22p, Dual Regulators of Sterol Biosynthesis in Saccharomyces cerevisiae journal October 2001
A Fungal Family of Transcriptional Regulators: the Zinc Cluster Proteins journal September 2006
p-Cymene catabolic pathway in Pseudomonas putida F1: cloning and characterization of DNA encoding conversion of p-cymene to p-cumate journal May 1997
Multiplexed CRISPR-Cas9-Based Genome Editing of Rhodosporidium toruloides journal March 2019
MPLEx: a Robust and Universal Protocol for Single-Sample Integrative Proteomic, Metabolomic, and Lipidomic Analyses journal May 2016
Molecular characterization of KU70 and KU80 homologues and exploitation of a KU70-deficient mutant for improving gene deletion frequency in Rhodosporidium toruloides journal January 2014
Lipid production in batch and fed-batch cultures of Rhodosporidium toruloidesfrom 5 and 6 carbon carbohydrates journal May 2012
Regulation of xylose metabolism in recombinant Saccharomyces cerevisiae journal January 2008
Metabolic engineering of Saccharomyces cerevisiae to produce 1-hexadecanol from xylose journal February 2016
Conversion of poplar biomass into high-energy density tricyclic sesquiterpene jet fuel blendstocks journal November 2020
Fatty alcohol production in Lipomyces starkeyi and Yarrowia lipolytica journal October 2016
Identification and characterization of the glucose dual-affinity transport system in Neurospora crassa: pleiotropic roles in nutrient transport, signaling, and carbon catabolite repression journal January 2017
Rhodosporidium toruloides: a new platform organism for conversion of lignocellulose into terpene biofuels and bioproducts journal October 2017
Escher: A Web Application for Building, Sharing, and Embedding Data-Rich Visualizations of Biological Pathways journal August 2015
The key protein of endosomal mRNP transport Rrm4 binds translational landmark sites of cargo mRNAs journal December 2018
Nutritional Control of Growth and Development in Yeast journal September 2012
High-Efficiency Genome Editing and Allele Replacement in Prototrophic and Wild Strains of Saccharomyces journal September 2014
Multi-Omics Driven Metabolic Network Reconstruction and Analysis of Lignocellulosic Carbon Utilization in Rhodosporidium toruloides journal January 2021
Screening and Growth Characterization of Non-conventional Yeasts in a Hemicellulosic Hydrolysate journal April 2021
A Role of a Newly Identified Isomerase From Yarrowia lipolytica in Erythritol Catabolism journal May 2018
Evaluating the Potential of Rhodosporidium toruloides-1588 for High Lipid Production Using Undetoxified Wood Hydrolysate as a Carbon Source journal November 2020
Functional genomics of lipid metabolism in the oleaginous yeast Rhodosporidium toruloides journal March 2018