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Citation for Study 632

Citation title: "Molecular phylogenetic support from ribosomal DNA sequences for origin of Helminthosporium from Leptosphaeria-like loculoascomycete ancestors.".

This study was previously identified under the legacy study ID S462 (Status: Published).

Citation

Olivier C., Berbee M., Shoemaker R., & Loria R. 2000. Molecular phylogenetic support from ribosomal DNA sequences for origin of Helminthosporium from Leptosphaeria-like loculoascomycete ancestors. Mycologia, 92(4): 736-746 .

Authors

• Olivier C.
• Berbee M.
• Shoemaker R.
• Loria R.

Abstract

Internal transcribed spacer (ITS) regions and 5.8S rDNA were PCR-amplified and sequenced for 17 isolates of Helminthosporium solani, cause of the potato disease silver scurf, and for 10 other isolates obtained from culture collections as Helminthosporium spp. Of these, five isolates had been incorrectly identified as Helminthosporium spp. and belonged in the genera Cochliobolus (anamorphs Bipolaris, Curvularia), Cladosporium, and Pyrenophora (anamorph Drechslera). Sequence alignment and analyses of ITS regions and 5.8S rDNA of four true Helminthosporium species and more than 45 fungi formerly grouped in the genus Helminthosporium sensu lato revealed that the segregated Helminthosporium species did not group with Helminthosporium s.s. Three species of Helminthosporium s.s. (H. solani, type species H. velutinum, and H. chlorophorae) grouped tightly and were most closely related to the teleomorph Leptosphaeria bicolor. For H. solani and H. velutinum, 18SrDNA sequences were also determined. Phylogenetic analyses of the 18S rDNA sequences of 33 euascomycetous species confirmed the close relationship of H. solani and H. velutinum to L. bicolor and placed Helminthosporium in the Pleosporales with 100% parsimony bootstrap support. Helminthosporium asterinum did not group closely with the other species of Helminthosporium s.s., but was as closely related to discomycetes in the Leotiales as to other true Helminthosporium spp. Review of type material revealed that H. asterinum could be excluded from the genus Helminthosporium based on morphology.

Keywords

ascomycete phylogeny; Bipolaris; Cochliobolus; Drechslera; Exserohilum; H. solani; H. velutinum; internal transcribed spacers; Pleosporales; Pyrenophora; rDNA; Setosphaeria

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S632
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref16926,
  	 author = {Claudia  Olivier and Mary L.   Berbee and Robert A.  Shoemaker and Rosemary  Loria},
  	 title = {Molecular phylogenetic support from ribosomal DNA sequences for origin of Helminthosporium from Leptosphaeria-like loculoascomycete ancestors.},
  	 year = {2000},
  	 keywords = {ascomycete phylogeny; Bipolaris; Cochliobolus; Drechslera; Exserohilum; H. solani; H. velutinum; internal transcribed spacers; Pleosporales; Pyrenophora; rDNA; Setosphaeria },
  	 doi = {},
  	 url = {},
  	 pmid = {},
  	 journal = {Mycologia},
  	 volume = {92},
  	 number = {4},
  	 pages = {736--746 },
  	 abstract = {Internal transcribed spacer (ITS) regions and 5.8S rDNA were PCR-amplified and sequenced for 17 isolates of Helminthosporium solani, cause of the potato disease silver scurf, and for 10 other isolates obtained from culture collections as Helminthosporium spp. Of these, five isolates had been incorrectly identified as Helminthosporium spp. and belonged in the genera Cochliobolus (anamorphs Bipolaris, Curvularia), Cladosporium, and Pyrenophora (anamorph Drechslera). Sequence alignment and analyses of ITS regions and 5.8S rDNA of four true Helminthosporium species and more than 45 fungi formerly grouped in the genus Helminthosporium sensu lato revealed that the segregated Helminthosporium species did not group with Helminthosporium s.s. Three species of Helminthosporium s.s. (H. solani, type species H. velutinum, and H. chlorophorae) grouped tightly and were most closely related to the teleomorph Leptosphaeria bicolor. For H. solani and H. velutinum, 18SrDNA sequences were also determined. Phylogenetic analyses of the 18S rDNA sequences of 33 euascomycetous species confirmed the close relationship of H. solani and H. velutinum to L. bicolor and placed Helminthosporium in the Pleosporales with 100% parsimony bootstrap support. Helminthosporium asterinum did not group closely with the other species of Helminthosporium s.s., but was as closely related to discomycetes in the Leotiales as to other true Helminthosporium spp. Review of type material revealed that H. asterinum could be excluded from the genus Helminthosporium based on morphology.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 16926
  AU  - Olivier,Claudia 
  AU  - Berbee,Mary L.  
  AU  - Shoemaker,Robert A. 
  AU  - Loria,Rosemary 
  T1  - Molecular phylogenetic support from ribosomal DNA sequences for origin of Helminthosporium from Leptosphaeria-like loculoascomycete ancestors.
  PY  - 2000
  KW  - ascomycete phylogeny; Bipolaris; Cochliobolus; Drechslera; Exserohilum; H. solani; H. velutinum; internal transcribed spacers; Pleosporales; Pyrenophora; rDNA; Setosphaeria 
  UR  - 
  N2  - Internal transcribed spacer (ITS) regions and 5.8S rDNA were PCR-amplified and sequenced for 17 isolates of Helminthosporium solani, cause of the potato disease silver scurf, and for 10 other isolates obtained from culture collections as Helminthosporium spp. Of these, five isolates had been incorrectly identified as Helminthosporium spp. and belonged in the genera Cochliobolus (anamorphs Bipolaris, Curvularia), Cladosporium, and Pyrenophora (anamorph Drechslera). Sequence alignment and analyses of ITS regions and 5.8S rDNA of four true Helminthosporium species and more than 45 fungi formerly grouped in the genus Helminthosporium sensu lato revealed that the segregated Helminthosporium species did not group with Helminthosporium s.s. Three species of Helminthosporium s.s. (H. solani, type species H. velutinum, and H. chlorophorae) grouped tightly and were most closely related to the teleomorph Leptosphaeria bicolor. For H. solani and H. velutinum, 18SrDNA sequences were also determined. Phylogenetic analyses of the 18S rDNA sequences of 33 euascomycetous species confirmed the close relationship of H. solani and H. velutinum to L. bicolor and placed Helminthosporium in the Pleosporales with 100% parsimony bootstrap support. Helminthosporium asterinum did not group closely with the other species of Helminthosporium s.s., but was as closely related to discomycetes in the Leotiales as to other true Helminthosporium spp. Review of type material revealed that H. asterinum could be excluded from the genus Helminthosporium based on morphology.
  L3  - 
  JF  - Mycologia
  VL  - 92
  IS  - 4
  ER  -