skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Genome assembly of the fungus Cochliobolus miyabeanus, and transcriptome analysis during early stages of infection on American wildrice (Zizania palustris L.)

Journal Article · · PLoS ONE
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Univ. of Minnesota, St. Paul, MN (United States). Dept. of Plant Pathology
  2. Univ. of Minnesota, St. Paul, MN (United States). Dept. of Agronomy and Plant Genetics; USDA-ARS-Plant Science Research Unit, St. Paul, MN (United States)
  3. Mayo Clinic, Div. of Biomedical Statistics and Informatics, Rochester, MN (United States)
  4. Univ. of Minnesota, St. Paul, MN (United States). Dept. of Plant Biology
  5. Aix-Marseille Univ., Marseille (France). CNRS UMR 7257
  6. Aix-Marseille Univ., Marseille (France). CNRS UMR 7257; King Abdulaziz Univ., Jeddah (Saudi Arabia). Dept. of Biological Sciences
  7. Univ. of Minnesota, St. Paul, MN (United States). Dept. of Plant Pathology; USDA-ARS-Plant Science Research Unit, St. Paul, MN (United States)

Here, the fungus Cochliobolus miyabeanus causes severe leaf spot disease on rice (Oryza sativa) and two North American specialty crops, American wildrice (Zizania palustris) and switchgrass (Panicum virgatu). Despite the importance of C. miyabeanus as a disease-causing agent in wildrice, little is known about either the mechanisms of pathogenicity or host defense responses. To start bridging these gaps, the genome of C. miyabeanus strain TG12bL2 was shotgun sequenced using Illumina technology. The genome assembly consists of 31.79 Mbp in 2,378 scaffolds with an N50 = 74,921. It contains 11,000 predicted genes of which 94.5% were annotated. Approximately 10% of total gene number is expected to be secreted. The C. miyabeanus genome is rich in carbohydrate active enzymes, and harbors 187 small secreted peptides (SSPs) and some fungal effector homologs. Detoxification systems were represented by a variety of enzymes that could offer protection against plant defense compounds. The non-ribosomal peptide synthetases and polyketide synthases (PKS) present were common to other Cochliobolus species. Additionally, the fungal transcriptome was analyzed at 48 hours after inoculation in planta. A total of 10,674 genes were found to be expressed, some of which are known to be involved in pathogenicity or response to host defenses including hydrophobins, cutinase, cell wall degrading enzymes, enzymes related to reactive oxygen species scavenging, PKS, detoxification systems, SSPs, and a known fungal effector. This work will facilitate future research on C. miyabeanus pathogen-associated molecular patterns and effectors, and in the identification of their corresponding wildrice defense mechanisms.

Research Organization:
Univ. of Minnesota, St. Paul, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1287181
Journal Information:
PLoS ONE, Vol. 11, Issue 6; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (106)

Improved Prediction of Signal Peptides: SignalP 3.0 journal July 2004
Purification, Characterization, and Amino Acid Sequence of Cerato-platanin, a New Phytotoxic Protein from Ceratocystis fimbriata f. sp. platani journal August 1999
Conserved Fungal LysM Effector Ecp6 Prevents Chitin-Triggered Immunity in Plants journal August 2010
TopHat: discovering splice junctions with RNA-Seq journal March 2009
Activation of an AP1-Like Transcription Factor of the Maize Pathogen Cochliobolus heterostrophus in Response to Oxidative Stress and Plant Signals journal February 2005
Isolation of the Carbon Catabolite Repressor ( CREA ) Gene from the Plant-pathogenic Fungus Cochliobolus carbonum journal January 2003
A polyketide synthase is required for fungal virulence and production of the polyketide T-toxin. journal November 1996
Cytochrome P450 enzymes in the fungal kingdom journal January 2011
Transcript assembly and quantification by RNA-Seq reveals unannotated transcripts and isoform switching during cell differentiation journal May 2010
Three Extracellular Proteases from Cochliobolus carbonum: Cloning and Targeted Disruption of ALP1 journal January 1996
Symbol Nomenclature for Graphical Representations of Glycans journal November 2015
Fungal enzyme sets for plant polysaccharide degradation journal July 2011
Velvet: Algorithms for de novo short read assembly using de Bruijn graphs journal February 2008
Leaf spot on switch grass ( Panicum virgatum ), symptoms of a new disease caused by Bipolaris oryzae journal September 2004
Tricking the Guard: Exploiting Plant Defense for Disease Susceptibility journal October 2012
Diverse Lifestyles and Strategies of Plant Pathogenesis Encoded in the Genomes of Eighteen Dothideomycetes Fungi journal December 2012
CYP53A15 of Cochliobolus lunatus, a Target for Natural Antifungal Compounds journal June 2008
Two glucose/xylose transporter genes from the yeast Candida intermedia: first molecular characterization of a yeast xylose–H+ symporter journal May 2006
Cloning, purification and characterisation of brassinin glucosyltransferase, a phytoalexin-detoxifying enzyme from the plant pathogen Sclerotinia sclerotiorum journal February 2009
The novel Cladosporium fulvum lysin motif effector Ecp6 is a virulence factor with orthologues in other fungal species journal July 2008
Phylogenomic analysis of type I polyketide synthase genes in pathogenic and saprobic ascomycetes journal December 2003
Functional analysis and mode of action of phytotoxic Nep1-like proteins of Botrytis cinerea journal September 2010
Simultaneous Transcriptome Analysis of Sorghum and Bipolaris sorghicola by Using RNA-seq in Combination with De Novo Transcriptome Assembly journal April 2013
Fungal Transporters Involved in Efflux of Natural Toxic Compounds and Fungicides journal June 2000
Impact of fungal drug transporters on fungicide sensitivity, multidrug resistance and virulence journal January 2006
NPS6 , Encoding a Nonribosomal Peptide Synthetase Involved in Siderophore-Mediated Iron Metabolism, Is a Conserved Virulence Determinant of Plant Pathogenic Ascomycetes journal October 2006
The Carbohydrate-Active EnZymes database (CAZy): an expert resource for Glycogenomics journal January 2009
Histone deacetylases in fungi: novel members, new facts journal July 2003
Molecular Cloning and Characterization of cel2 from the Fungus Cochlibolus carbonum journal January 2001
Genetic and Genomic Dissection of the Cochliobolus heterostrophus Tox1 Locus Controlling Biosynthesis of the Polyketide Virulence Factor T‐toxin book January 2007
β-Glucan biosynthesis inhibitors isolated from fungi as hyphal malformation inducer journal June 1993
Gene Expression Modulation of Two Biosynthesis Pathways via Signal Transduction in Cochliobolus heterostrophus journal January 2014
Molecular Characterization and Functional Analysis of MgNLP , the Sole NPP1 Domain–Containing Protein, from the Fungal Wheat Leaf Pathogen Mycosphaerella graminicola journal July 2009
Disruption of phacA , an Aspergillus nidulans Gene Encoding a Novel Cytochrome P450 Monooxygenase Catalyzing Phenylacetate 2-Hydroxylation, Results in Penicillin Overproduction journal May 1999
Creating and screening Cochliobolus heterostrophus non-ribosomal peptide synthetase mutants journal February 2008
Wild Rice Domestication, Fungal Brown Spot Disease, and the Future of Commercial Production in Minnesota journal January 1992
Transcription of the yeast TNA1 gene is not only regulated by nicotinate but also by p -aminobenzoate journal September 2000
Two Polyketide Synthase-Encoding Genes Are Required for Biosynthesis of the Polyketide Virulence Factor, T-toxin, by Cochliobolus heterostrophus journal February 2006
Cochliobolus Heterostrophus. Cause of Southern Corn Leaf Blight book January 1988
(1,3;1,4)-β-D-Glucans in Cell Walls of the Poaceae, Lower Plants, and Fungi: A Tale of Two Linkages journal September 2009
Phylogeny and biogeography of the eastern Asian–North American disjunct wild-rice genus (Zizania L., Poaceae) journal June 2010
Development of Fungal Brown Spot and Spot Blotch on Cultivated Wild Rice in Minnesota journal October 1999
Fungal LysM effectors: extinguishers of host immunity? journal April 2009
Chitinases of filamentous fungi: a large group of diverse proteins with multiple physiological functions journal February 2008
CEGMA: a pipeline to accurately annotate core genes in eukaryotic genomes journal March 2007
A Gene Related to Yeast HOS2 Histone Deacetylase Affects Extracellular Depolymerase Expression and Virulence in a Plant Pathogenic Fungus journal July 2001
Phytotoxins Produced by Germinating Spores of Bipolaris oryzae journal January 1991
The Cochliobolus carbonum SNF1 Gene Is Required for Cell Wall–Degrading Enzyme Expression and Virulence on Maize journal February 2000
The carbohydrate-active enzymes database (CAZy) in 2013 journal November 2013
Gene prediction in novel fungal genomes using an ab initio algorithm with unsupervised training journal October 2008
Expansion of the enzymatic repertoire of the CAZy database to integrate auxiliary redox enzymes journal January 2013
A Eukaryotic Alanine Racemase Gene Involved in Cyclic Peptide Biosynthesis journal February 2000
A MAP kinase gene, BMK1, is required for conidiation and pathogenicity in the rice leaf spot pathogen Bipolaris oryzae journal April 2007
An eight-cysteine-containing CFEM domain unique to a group of fungal membrane proteins journal March 2003
Glucose uptake and growth of glucose-limited chemostat cultures of Aspergillus niger and a disruptant lacking MstA, a high-affinity glucose transporter journal June 2007
Structure of victorin C, the major host-selective toxin fromCochliobolus victoriae journal December 1985
Endopolygalacturonase is not required for pathogenicity of Cochliobolus carbonum on maize. journal December 1990
A putative cyclic peptide efflux pump encoded by the TOXA gene of the plant-pathogenic fungus Cochliobolus carbonum journal June 1996
Cloning, disruption, and expression of two endo-beta 1, 4-xylanase genes, XYL2 and XYL3, from Cochliobolus carbonum journal November 1996
Analysis and annotation of the hexaploid oat seed transcriptome journal January 2013
Hydrophobins—Unique Fungal Proteins journal May 2012
Endopolygalacturonase Is Not Required for Pathogenicity of Cochliobolus carbonum on Maize journal December 1990
Systematic and searchable classification of cytochrome P450 proteins encoded by fungal and oomycete genomes journal January 2012
Intracellular Siderophores Are Essential for Ascomycete Sexual Development in Heterothallic Cochliobolus heterostrophus and Homothallic Gibberella zeae journal June 2007
AP1-mediated Multidrug Resistance in Saccharomyces cerevisiae Requires FLR1 Encoding a Transporter of the Major Facilitator Superfamily journal August 1997
Efflux in Fungi: La Pièce de Résistance journal June 2009
FatiGO: a web tool for finding significant associations of Gene Ontology terms with groups of genes journal January 2004
Nonribosomal peptides: from genes to products journal January 2003
Gepard: a rapid and sensitive tool for creating dotplots on genome scale journal February 2007
Cloning and characterization of the PDA6-1 gene encoding a fungal cytochrome P-450 which detoxifies the phytoalexin pisatin from garden pea journal September 1994
Helminthosporium oryzae toxin suppresses phenol metabolism in rice plants and aids pathogen colonization journal November 1992
Functional analysis of the Alternaria brassicicola non-ribosomal peptide synthetase gene AbNPS2 reveals a role in conidial cell wall construction journal January 2007
Correction: Sequential Delivery of Host-Induced Virulence Effectors by Appressoria and Intracellular Hyphae of the Phytopathogen Colletotrichum higginsianum journal August 2012
Transcriptional regulation of the Saccharomyces cerevisiae DAL5 gene family and identification of the high affinity nicotinic acid permease TNA1 ( YGR260w ) journal June 2000
Glycosyltransferases and their products: cryptococcal variations on fungal themes journal June 2006
Phylogenomics reveals subfamilies of fungal nonribosomal peptide synthetases and their evolutionary relationships journal January 2010
Analysis of Two in Planta Expressed LysM Effector Homologs from the Fungus Mycosphaerella graminicola Reveals Novel Functional Properties and Varying Contributions to Virulence on Wheat journal April 2011
Proteomics of rice and Cochliobolus miyabeanus fungal interaction: Insight into proteins at intracellular and extracellular spaces journal August 2014
A Decarboxylase Encoded at the Cochliobolus heterostrophus Translocation-Associated Tox1B Locus Is Required for Polyketide (T-toxin) Biosynthesis and High Virulence on T-cytoplasm Maize journal September 2002
Wild Rice Yield Losses Associated with Growth-Stage-Specific Fungal Brown Spot Epidemics journal January 1987
The biology of ophiobolins journal July 2000
Cerato-platanin protein is located in the cell walls of ascospores, conidia and hyphae of Ceratocystis fimbriata f. sp. platani journal April 2004
Mapping and quantifying mammalian transcriptomes by RNA-Seq journal May 2008
EST mining identifies proteins putatively secreted by the anthracnose pathogen Colletotrichum truncatum journal June 2011
Plant cells recognize chitin fragments for defense signaling through a plasma membrane receptor journal July 2006
Cerato-platanins: Elicitors and effectors journal November 2014
Effect of Calcium Silicate on Blast and Brown Spot Intensities and Yields of Rice journal January 1991
Tomato Cf resistance proteins mediate recognition of cognate homologous effectors from fungi pathogenic on dicots and monocots journal April 2010
A novel class of gene controlling virulence in plant pathogenic ascomycete fungi journal May 2003
LysM receptors recognize friend and foe journal July 2006
Rapid preparation of DNA from filamentous fungi journal January 1985
Fungal chitinases: diversity, mechanistic properties and biotechnological potential journal December 2011
Using the Velvet de novo Assembler for Short‐Read Sequencing Technologies journal September 2010
Targeted Mutants of Cochliobolus carbonum Lacking the Two Major Extracellular Polygalacturonases journal April 1998
G-Protein β Subunit of Cochliobolus heterostrophus Involved in Virulence, Asexual and Sexual Reproductive Ability, and Morphogenesis journal December 2004
Novel phacB-Encoded Cytochrome P450 Monooxygenase from Aspergillus nidulans with 3-Hydroxyphenylacetate 6-Hydroxylase and 3,4-Dihydroxyphenylacetate 6-Hydroxylase Activities journal December 2006
Carbohydrate-binding modules: fine-tuning polysaccharide recognition journal September 2004
A putative branched-chain-amino-acid transaminase gene required for HC-toxin biosynthesis and pathogenicity in Cochliobolus carbonum The GenBank accession number for the nucleotide sequence reported in this paper is AF157629. journal December 1999
Two LysM receptor molecules, CEBiP and OsCERK1, cooperatively regulate chitin elicitor signaling in rice: LysM receptors for rice chitin signaling journal September 2010
The Cochliobolus Carbonum SNF1 Gene Is Required for Cell Wall-Degrading Enzyme Expression and Virulence on Maize journal February 2000
Expression of a Phytophthora sojae necrosis-inducing protein occurs during transition from biotrophy to necrotrophy journal November 2002
The In Planta-Produced Extracellular Proteins ECP1 and ECP2 of Cladosporium fulvum Are Virulence Factors journal August 1997
A Gene Related to Yeast HOS2 Histone Deacetylase Affects Extracellular Depolymerase Expression and Virulence in a Plant Pathogenic Fungus journal July 2001
CCL5 derived from tumor-associated macrophages promotes prostate cancer stem cells and metastasis via activating β-catenin/STAT3 signaling journal April 2020
Functional Analysis of All Nonribosomal Peptide Synthetases in Cochliobolus heterostrophus Reveals a Factor, NPS6, Involved in Virulence and Resistance to Oxidative Stress journal March 2005
The cyclic peptide synthetase catalyzing HC-toxin production in the filamentous fungus Cochliobolus carbonum is encoded by a 15.7-kilobase open reading frame. journal December 1992

Cited By (1)


Figures / Tables (8)