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Title: The proteome and phosphoproteome of Neurospora crassa in response to cellulose, sucrose and carbon starvation

Journal Article · · Fungal Genetics and Biology
ORCiD logo [1];  [1];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [3];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Plant and Microbial Biology
  2. Univ. of California, Berkeley, CA (United States). California Inst. for Quantitative Biosciences
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology; Univ. of California, Berkeley, CA (United States). Dept. of Chemistry

Improving cellulolytic enzyme production by plant biomass degrading fungi holds great potential in reducing costs associated with production of next-generation biofuels generated from lignocellulose. How fungi sense cellulosic materials and respond by secreting enzymes has mainly been examined by assessing function of transcriptional regulators and via transcriptional profiling. Here, we obtained global proteomic and phosphoproteomic profiles of the plant biomass degrading filamentous fungus Neurospora crassa grown on different carbon sources, i.e. sucrose, no carbon, and cellulose, by performing isobaric tags for relative and absolute quantification (iTRAQ)-based LC-MS/MS analyses. A comparison between proteomes and transcriptomes under identical carbon conditions suggests that extensive post-transcriptional regulation occurs in N. crassa in response to exposure to cellulosic material. Several hundred amino acid residues with differential phosphorylation levels on crystalline cellulose (Avicel) or carbon-free medium vs sucrose medium were identified, including phosphorylation sites in a major transcriptional activator for cellulase genes, CLR1, as well as a cellobionic acid transporter, CBT1. Mutation of phosphorylation sites on CLR1 did not have a major effect on transactivation of cellulase production, while mutation of phosphorylation sites in CBT1 increased its transporting capacity. Our data provides rich information at both the protein and phosphorylation levels of the early cellular responses to carbon starvation and cellulosic induction and aids in a greater understanding of the underlying post-transcriptional regulatory mechanisms in filamentous fungi.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830; P41GM103493; AC02-05CH11231
OSTI ID:
1188945
Alternate ID(s):
OSTI ID: 1222386; OSTI ID: 1407259
Report Number(s):
PNNL-SA-103196; 48135; 400412000
Journal Information:
Fungal Genetics and Biology, Vol. 72, Issue C; ISSN 1087-1845
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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Cited By (18)

Direct Target Network of the Neurospora crassa Plant Cell Wall Deconstruction Regulators CLR-1, CLR-2, and XLR-1 journal October 2015
Consolidated bioprocessing of lignocellulosic biomass to itaconic acid by metabolically engineering Neurospora crassa journal September 2018
A fungal transcription factor essential for starch degradation affects integration of carbon and nitrogen metabolism journal May 2017
Network reconstruction and systems analysis of plant cell wall deconstruction by Neurospora crassa journal September 2017
The Putative Cellodextrin Transporter-like Protein CLP1 Is Involved in Cellulase Induction in Neurospora crassa journal November 2014
Broad Substrate-Specific Phosphorylation Events Are Associated With the Initial Stage of Plant Cell Wall Recognition in Neurospora crassa journal November 2019
Network of nutrient-sensing pathways and a conserved kinase cascade integrate osmolarity and carbon sensing in Neurospora crassa journal September 2017
Biodegradation of Cellulose in Laboratory-Scale Bioreactors: Experimental and Numerical Studies journal September 2019
mus-52 disruption and metabolic regulation in Neurospora crassa: Transcriptional responses to extracellular phosphate availability journal April 2018
Biotechnological production of value-added compounds by ustilaginomycetous yeasts journal September 2017
STK-12 acts as a transcriptional brake to control the expression of cellulase-encoding genes in Neurospora crassa journal November 2019
Regulation of Cell-to-Cell Communication and Cell Wall Integrity by a Network of MAP Kinase Pathways and Transcription Factors in Neurospora crassa journal April 2018
Expanding xylose metabolism in yeast for plant cell wall conversion to biofuels journal February 2015
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
Cellobionic acid utilization: from Neurospora crassa to Saccharomyces cerevisiae journal August 2015
VIB1, a Link between Glucose Signaling and Carbon Catabolite Repression, Is Essential for Plant Cell Wall Degradation by Neurospora crassa journal August 2014
Proteomic and Phosphoproteomic Insights into a Signaling Hub Role for Cdc14 in Asexual Development and Multiple Stress Responses in Beauveria bassiana journal April 2016
Communicate and Fuse: How Filamentous Fungi Establish and Maintain an Interconnected Mycelial Network journal March 2019