Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves

Cryptosporiopsis eucalypti is a common follicolous pathogen of Eucalyptus species in tropical and temperate regions where these trees are grown in plantations. The taxonomy of C. eucalypti is confused by the fact that it is phylogenetically unrelated to the type species of Cryptosporiopsis (Cryptosp...

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Main Authors: Cheewangkoon R., Groenewald J., Verkley G., Hyde K., Wingfield M., Gryzenhout M., Summerell B., Denman S., Toanun C., Crous P.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79955806917&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/43227
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-432272017-09-28T06:52:28Z Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves Cheewangkoon R. Groenewald J. Verkley G. Hyde K. Wingfield M. Gryzenhout M. Summerell B. Denman S. Toanun C. Crous P. Cryptosporiopsis eucalypti is a common follicolous pathogen of Eucalyptus species in tropical and temperate regions where these trees are grown in plantations. The taxonomy of C. eucalypti is confused by the fact that it is phylogenetically unrelated to the type species of Cryptosporiopsis (Cryptosporiopsis nigra = C. scutellata, Helotiales). The aim of this study was to resolve the taxonomic position of C. eucalypti based on morphology and phylogenetic inference. Thirty-two Eucalyptus leaf samples with symptoms typical of C. eucalypti infection were collected from 10 tropical and temperate countries across four continents. Cultures were established from single conidia, as well as from ascospores of a previously unreported teleomorph state. DNA sequences were obtained for the 28 S nrDNA, the internal transcribed spacers of the nrDNA operon, and beta-tubulin regions to determine generic and species-level relationships. DNAsequence analysis showed that conidial and ascospore isolates of C. eucalypti have low intraspecific variation, although two collections from Australia and one from Uruguay represented two novel taxa. Based on the newly collected teleomorph stage, as well as the phylogenetic data, C. eucalypti is shown to represent a new genus closely related to Plagiostoma (Gnomoniaceae, Diaporthales) for which the names Pseudoplagiostoma gen. nov. and Pseudoplagiostomaceae fam. nov. (Diaporthales) are introduced. Two new species of Cryptosporiopsis (Dermateaceae, Helotiales) on Eucalyptus from Australia and California (USA) are also described. © 2010 Kevin D. Hyde. 2017-09-28T06:52:28Z 2017-09-28T06:52:28Z 2010-10-01 Journal 15602745 2-s2.0-79955806917 10.1007/s13225-010-0041-5 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79955806917&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43227
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description Cryptosporiopsis eucalypti is a common follicolous pathogen of Eucalyptus species in tropical and temperate regions where these trees are grown in plantations. The taxonomy of C. eucalypti is confused by the fact that it is phylogenetically unrelated to the type species of Cryptosporiopsis (Cryptosporiopsis nigra = C. scutellata, Helotiales). The aim of this study was to resolve the taxonomic position of C. eucalypti based on morphology and phylogenetic inference. Thirty-two Eucalyptus leaf samples with symptoms typical of C. eucalypti infection were collected from 10 tropical and temperate countries across four continents. Cultures were established from single conidia, as well as from ascospores of a previously unreported teleomorph state. DNA sequences were obtained for the 28 S nrDNA, the internal transcribed spacers of the nrDNA operon, and beta-tubulin regions to determine generic and species-level relationships. DNAsequence analysis showed that conidial and ascospore isolates of C. eucalypti have low intraspecific variation, although two collections from Australia and one from Uruguay represented two novel taxa. Based on the newly collected teleomorph stage, as well as the phylogenetic data, C. eucalypti is shown to represent a new genus closely related to Plagiostoma (Gnomoniaceae, Diaporthales) for which the names Pseudoplagiostoma gen. nov. and Pseudoplagiostomaceae fam. nov. (Diaporthales) are introduced. Two new species of Cryptosporiopsis (Dermateaceae, Helotiales) on Eucalyptus from Australia and California (USA) are also described. © 2010 Kevin D. Hyde.
format Journal
author Cheewangkoon R.
Groenewald J.
Verkley G.
Hyde K.
Wingfield M.
Gryzenhout M.
Summerell B.
Denman S.
Toanun C.
Crous P.
spellingShingle Cheewangkoon R.
Groenewald J.
Verkley G.
Hyde K.
Wingfield M.
Gryzenhout M.
Summerell B.
Denman S.
Toanun C.
Crous P.
Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
author_facet Cheewangkoon R.
Groenewald J.
Verkley G.
Hyde K.
Wingfield M.
Gryzenhout M.
Summerell B.
Denman S.
Toanun C.
Crous P.
author_sort Cheewangkoon R.
title Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
title_short Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
title_full Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
title_fullStr Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
title_full_unstemmed Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus leaves
title_sort re-evaluation of cryptosporiopsis eucalypti and cryptosporiopsis-like species occurring on eucalyptus leaves
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79955806917&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/43227
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