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Citation for Study 24820

Citation title: "Fusarium xyrophilum sp. nov., a member of the Fusarium fujikuroi species complex recovered from pseudoflowers on yellow-eyed grass (Xyris spp.) from Guyana ".

Study name: "Fusarium xyrophilum sp. nov., a member of the Fusarium fujikuroi species complex recovered from pseudoflowers on yellow-eyed grass (Xyris spp.) from Guyana ".

This study is part of submission 24820 (Status: Published).

Citation

Laraba I., Kim H., Proctor R.H., Busman M., O'donnell K., Felker F.C., Aime M.C., Koch R.A., & Wurdack K.J. 2019. Fusarium xyrophilum sp. nov., a member of the Fusarium fujikuroi species complex recovered from pseudoflowers on yellow-eyed grass (Xyris spp.) from Guyana. Mycologia, .

Authors

• Laraba I. (submitter) 3095669898
• Kim H.
• Proctor R.H.
• Busman M.
• O'donnell K. 309-681-6383
• Felker F.C.
• Aime M.C.
• Koch R.A. 3202603702
• Wurdack K.J.

Abstract

Herein we report on the discovery and characterization of a novel Fusarium species that produced yellow-orange pseudoflowers on Xyris spp. (yellow-eyed grass; Xyridaceae) growing in the savannas of the Pakaraima Mountains of western Guyana. The petaloid fungal structures produced on infected plants mimic host flowers in gross morphology. Molecular phylogenetic analyses of full-length RPB1, RPB2, and TEF1 DNA sequences mined from genome sequences resolved the fungus, described herein as F. xyrophilum sp. nov., as sister to F. pseudocircinatum within the African clade of the F. fujikuroi species complex. Results of a PCR assay for mating type idiomorph revealed that single conidial isolates of F. xyrophilum had only one of the MAT idiomorphs (MAT1-1 or MAT1-2), which suggests that the fungus has a heterothallic sexual reproductive mode. BLASTn searches of whole genome sequence of three strains of F. xyrophilum indicated it has the genetic potential to produce secondary metabolites, including phytohormones, pigments and mycotoxins. However, a polyketide-derived pigment, 8-O-methylbostrycoidin, was the only metabolite detected in cracked maize kernel cultures. When grown on carnation leaf agar, F. xyrophilum is phenotypically distinct from other described Fusarium species in that it produces 0-septate microconidia on erect synnemata that are up to 2 mm tall and it does not produce multiseptate macroconidia.

Keywords

floral mimicry, MAT idiomorphs, morphology, molecular phylogenetics, RPB1, RPB2, synnemata, TEF1, whole genome, 1 new taxon

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S24820
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref29865,
  	 author = {Imane  laraba and Hye-Seon  Kim and Robert H. Proctor and Mark  Busman and Kerry  O'Donnell and Frederick C Felker and Mary Catherine Aime and Rachel Anne Koch and Kenneth J. Wurdack},
  	 title = {Fusarium xyrophilum sp. nov., a member of the Fusarium fujikuroi species complex recovered from pseudoflowers on yellow-eyed grass (Xyris spp.) from Guyana },
  	 year = {2019},
  	 keywords = {floral mimicry, MAT idiomorphs, morphology, molecular phylogenetics, RPB1, RPB2, synnemata, TEF1, whole genome, 1 new taxon},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Mycologia},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Herein we report on the discovery and characterization of a novel Fusarium species that produced yellow-orange pseudoflowers on Xyris spp. (yellow-eyed grass; Xyridaceae) growing in the savannas of the Pakaraima Mountains of western Guyana.  The petaloid fungal structures produced on infected plants mimic host flowers in gross morphology.  Molecular phylogenetic analyses of full-length RPB1, RPB2, and TEF1 DNA sequences mined from genome sequences resolved the fungus, described herein as F. xyrophilum sp. nov., as sister to F. pseudocircinatum within the African clade of the F. fujikuroi species complex.  Results of a PCR assay for mating type idiomorph revealed that single conidial isolates of F. xyrophilum had only one of the MAT idiomorphs (MAT1-1 or MAT1-2), which suggests that the fungus has a heterothallic sexual reproductive mode.  BLASTn searches of whole genome sequence of three strains of F. xyrophilum indicated it has the genetic potential to produce secondary metabolites, including phytohormones, pigments and mycotoxins.  However, a polyketide-derived pigment, 8-O-methylbostrycoidin, was the only metabolite detected in cracked maize kernel cultures.  When grown on carnation leaf agar, F. xyrophilum is phenotypically distinct from other described Fusarium species in that it produces 0-septate microconidia on erect synnemata that are up to 2 mm tall and it does not produce multiseptate macroconidia.  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 29865
  AU  - laraba,Imane 
  AU  - Kim,Hye-Seon 
  AU  - Proctor,Robert H.
  AU  - Busman,Mark 
  AU  - O'Donnell,Kerry 
  AU  - Felker,Frederick C
  AU  - Aime,Mary Catherine
  AU  - Koch,Rachel Anne
  AU  - Wurdack,Kenneth J.
  T1  - Fusarium xyrophilum sp. nov., a member of the Fusarium fujikuroi species complex recovered from pseudoflowers on yellow-eyed grass (Xyris spp.) from Guyana 
  PY  - 2019
  KW  - floral mimicry
  KW  - MAT idiomorphs
  KW  - morphology
  KW  - molecular phylogenetics
  KW  - RPB1
  KW  - RPB2
  KW  - synnemata
  KW  - TEF1
  KW  - whole genome
  KW  - 1 new taxon
  UR  - http://dx.doi.org/
  N2  - Herein we report on the discovery and characterization of a novel Fusarium species that produced yellow-orange pseudoflowers on Xyris spp. (yellow-eyed grass; Xyridaceae) growing in the savannas of the Pakaraima Mountains of western Guyana.  The petaloid fungal structures produced on infected plants mimic host flowers in gross morphology.  Molecular phylogenetic analyses of full-length RPB1, RPB2, and TEF1 DNA sequences mined from genome sequences resolved the fungus, described herein as F. xyrophilum sp. nov., as sister to F. pseudocircinatum within the African clade of the F. fujikuroi species complex.  Results of a PCR assay for mating type idiomorph revealed that single conidial isolates of F. xyrophilum had only one of the MAT idiomorphs (MAT1-1 or MAT1-2), which suggests that the fungus has a heterothallic sexual reproductive mode.  BLASTn searches of whole genome sequence of three strains of F. xyrophilum indicated it has the genetic potential to produce secondary metabolites, including phytohormones, pigments and mycotoxins.  However, a polyketide-derived pigment, 8-O-methylbostrycoidin, was the only metabolite detected in cracked maize kernel cultures.  When grown on carnation leaf agar, F. xyrophilum is phenotypically distinct from other described Fusarium species in that it produces 0-septate microconidia on erect synnemata that are up to 2 mm tall and it does not produce multiseptate macroconidia.  
  L3  - 
  JF  - Mycologia
  VL  - 
  IS  - 
  ER  -