Chocolate spot disease of Eucalyptus

Chocolate Spot leaf disease of Eucalyptus is associated with several Heteroconium-like species of hyphomycetes that resemble Heteroconium s. str. in morphology. They differ, however, in their ecology, with the former being plant pathogenic, while Heteroconium s. str. is a genus of sooty moulds. Resu...

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Main Authors: Cheewangkoon R., Groenewald J., Hyde K., To-anun C., Crous P.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856460822&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42893
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-428932017-09-28T06:42:06Z Chocolate spot disease of Eucalyptus Cheewangkoon R. Groenewald J. Hyde K. To-anun C. Crous P. Chocolate Spot leaf disease of Eucalyptus is associated with several Heteroconium-like species of hyphomycetes that resemble Heteroconium s. str. in morphology. They differ, however, in their ecology, with the former being plant pathogenic, while Heteroconium s. str. is a genus of sooty moulds. Results of molecular analyses, inferred from DNA sequences of the large subunit (LSU) and internal transcribed spacers (ITS) region of nrDNA, delineated four Heteroconium-like species on Eucalyptus, namely H. eucalypti, H. kleinziense, Alysidiella parasitica, and one isolate resembling a novel species in a clade separate from the holotype of Heteroconium, H. citharexyli. Based on molecular phylogeny, morphology and ecology, the Heteroconium-like species associated with Chocolate Spot disease are reclassified in the genus Alysidiella, which is shown to have mycelium that is immersed in and superficial on the host tissue and conidiogenous cells that can have loci that are either inconspicuous or proliferating percurrently. Furthermore, conidiogenous cells can either occur solitary on hyphae, or be sporodochial, arranged on a weakly developed stroma, which further distinguishes Alysidiella from Heteroconium. © 2010 The Author(s). 2017-09-28T06:42:06Z 2017-09-28T06:42:06Z 2012-02-01 Journal 1617416X 2-s2.0-84856460822 10.1007/s11557-010-0728-8 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856460822&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42893
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description Chocolate Spot leaf disease of Eucalyptus is associated with several Heteroconium-like species of hyphomycetes that resemble Heteroconium s. str. in morphology. They differ, however, in their ecology, with the former being plant pathogenic, while Heteroconium s. str. is a genus of sooty moulds. Results of molecular analyses, inferred from DNA sequences of the large subunit (LSU) and internal transcribed spacers (ITS) region of nrDNA, delineated four Heteroconium-like species on Eucalyptus, namely H. eucalypti, H. kleinziense, Alysidiella parasitica, and one isolate resembling a novel species in a clade separate from the holotype of Heteroconium, H. citharexyli. Based on molecular phylogeny, morphology and ecology, the Heteroconium-like species associated with Chocolate Spot disease are reclassified in the genus Alysidiella, which is shown to have mycelium that is immersed in and superficial on the host tissue and conidiogenous cells that can have loci that are either inconspicuous or proliferating percurrently. Furthermore, conidiogenous cells can either occur solitary on hyphae, or be sporodochial, arranged on a weakly developed stroma, which further distinguishes Alysidiella from Heteroconium. © 2010 The Author(s).
format Journal
author Cheewangkoon R.
Groenewald J.
Hyde K.
To-anun C.
Crous P.
spellingShingle Cheewangkoon R.
Groenewald J.
Hyde K.
To-anun C.
Crous P.
Chocolate spot disease of Eucalyptus
author_facet Cheewangkoon R.
Groenewald J.
Hyde K.
To-anun C.
Crous P.
author_sort Cheewangkoon R.
title Chocolate spot disease of Eucalyptus
title_short Chocolate spot disease of Eucalyptus
title_full Chocolate spot disease of Eucalyptus
title_fullStr Chocolate spot disease of Eucalyptus
title_full_unstemmed Chocolate spot disease of Eucalyptus
title_sort chocolate spot disease of eucalyptus
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856460822&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42893
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