@ARTICLE{TreeBASE2Ref18633,
author = {Syuuichi Nekoduka and Kazuaki Tanaka and Yukio Harada and Teruo Sano},
title = {Phylogenetic affinity of Mycochaetophora gentianae, the causal fungus of brown leaf spot on gentian (Gentiana triflora), to Pseudocercosporella-like hyphomycetes in Helotiales.},
year = {2010},
keywords = {},
doi = {10.1007/s10267-009-0021-3},
url = {},
pmid = {},
journal = {Mycoscience},
volume = {51},
number = {2},
pages = {123--133},
abstract = {Mycochaetophora gentianae, the causal agent of brown leaf spot on gentian (Gentiana scabra), is characterized by its hyaline besom-like sporophore, although its conidiogenesis and phylogenetic position have so far remained unknown. We isolated the causal fungus from a new host, G. triflora in Iwate, Japan. Both the G. triflora isolate and the ex-type M. gentianae isolate produced symptoms on G. triflora, but not on G. scabra. Microscopic observations of the diseased leaves indicated that conidiogenesis was blastic from short conidiophores, and schizolytic secession of conidia left unthickened and inconspicuous conidial scars on the conidiogenous cells. Conidia were catenate, in branched acropetalous chains; secondary conidia were blastically produced from the first or second cell at the base of primary conidium. The G. triflora isolate was identified as M. gentianae because of its identity to the ex-type in characteristics of culture, pathogenicity, and conidia. Phylogenetic analyses using 3 rDNA sequences combined (SSU + LSU + 5.8S rDNA) indicated that both isolates clustered with Rhexocercosporidium carotae, and the cluster was placed within Helotiales-Rhytismatales. Additional analyses using internal transcribed spacers (ITS) including 5.8S rDNA sequences revealed that both isolates were monophyletic and that they were closely related to three helotialean Pseudocercosporella-like hyphomycetous genera, Helgardia, Rhexocercosporidium and Rhynchosporium.}
}
Citation for Study 10142
Citation title:
"Phylogenetic affinity of Mycochaetophora gentianae, the causal fungus of brown leaf spot on gentian (Gentiana triflora), to Pseudocercosporella-like hyphomycetes in Helotiales.".
This study was previously identified under the legacy study ID S2485
(Status: Published).
Citation
Nekoduka S., Tanaka K., Harada Y., & Sano T. 2010. Phylogenetic affinity of Mycochaetophora gentianae, the causal fungus of brown leaf spot on gentian (Gentiana triflora), to Pseudocercosporella-like hyphomycetes in Helotiales. Mycoscience, 51(2): 123-133.
Authors
-
Nekoduka S.
-
Tanaka K.
-
Harada Y.
-
Sano T.
Abstract
Mycochaetophora gentianae, the causal agent of brown leaf spot on gentian (Gentiana scabra), is characterized by its hyaline besom-like sporophore, although its conidiogenesis and phylogenetic position have so far remained unknown. We isolated the causal fungus from a new host, G. triflora in Iwate, Japan. Both the G. triflora isolate and the ex-type M. gentianae isolate produced symptoms on G. triflora, but not on G. scabra. Microscopic observations of the diseased leaves indicated that conidiogenesis was blastic from short conidiophores, and schizolytic secession of conidia left unthickened and inconspicuous conidial scars on the conidiogenous cells. Conidia were catenate, in branched acropetalous chains; secondary conidia were blastically produced from the first or second cell at the base of primary conidium. The G. triflora isolate was identified as M. gentianae because of its identity to the ex-type in characteristics of culture, pathogenicity, and conidia. Phylogenetic analyses using 3 rDNA sequences combined (SSU + LSU + 5.8S rDNA) indicated that both isolates clustered with Rhexocercosporidium carotae, and the cluster was placed within Helotiales-Rhytismatales. Additional analyses using internal transcribed spacers (ITS) including 5.8S rDNA sequences revealed that both isolates were monophyletic and that they were closely related to three helotialean Pseudocercosporella-like hyphomycetous genera, Helgardia, Rhexocercosporidium and Rhynchosporium.
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http://purl.org/phylo/treebase/phylows/study/TB2:S10142
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@ARTICLE{TreeBASE2Ref18633,
author = {Syuuichi Nekoduka and Kazuaki Tanaka and Yukio Harada and Teruo Sano},
title = {Phylogenetic affinity of Mycochaetophora gentianae, the causal fungus of brown leaf spot on gentian (Gentiana triflora), to Pseudocercosporella-like hyphomycetes in Helotiales.},
year = {2010},
keywords = {},
doi = {10.1007/s10267-009-0021-3},
url = {},
pmid = {},
journal = {Mycoscience},
volume = {51},
number = {2},
pages = {123--133},
abstract = {Mycochaetophora gentianae, the causal agent of brown leaf spot on gentian (Gentiana scabra), is characterized by its hyaline besom-like sporophore, although its conidiogenesis and phylogenetic position have so far remained unknown. We isolated the causal fungus from a new host, G. triflora in Iwate, Japan. Both the G. triflora isolate and the ex-type M. gentianae isolate produced symptoms on G. triflora, but not on G. scabra. Microscopic observations of the diseased leaves indicated that conidiogenesis was blastic from short conidiophores, and schizolytic secession of conidia left unthickened and inconspicuous conidial scars on the conidiogenous cells. Conidia were catenate, in branched acropetalous chains; secondary conidia were blastically produced from the first or second cell at the base of primary conidium. The G. triflora isolate was identified as M. gentianae because of its identity to the ex-type in characteristics of culture, pathogenicity, and conidia. Phylogenetic analyses using 3 rDNA sequences combined (SSU + LSU + 5.8S rDNA) indicated that both isolates clustered with Rhexocercosporidium carotae, and the cluster was placed within Helotiales-Rhytismatales. Additional analyses using internal transcribed spacers (ITS) including 5.8S rDNA sequences revealed that both isolates were monophyletic and that they were closely related to three helotialean Pseudocercosporella-like hyphomycetous genera, Helgardia, Rhexocercosporidium and Rhynchosporium.}
}
- Show RIS reference
TY - JOUR
ID - 18633
AU - Nekoduka,Syuuichi
AU - Tanaka,Kazuaki
AU - Harada,Yukio
AU - Sano,Teruo
T1 - Phylogenetic affinity of Mycochaetophora gentianae, the causal fungus of brown leaf spot on gentian (Gentiana triflora), to Pseudocercosporella-like hyphomycetes in Helotiales.
PY - 2010
KW -
UR - http://dx.doi.org/10.1007/s10267-009-0021-3
N2 - Mycochaetophora gentianae, the causal agent of brown leaf spot on gentian (Gentiana scabra), is characterized by its hyaline besom-like sporophore, although its conidiogenesis and phylogenetic position have so far remained unknown. We isolated the causal fungus from a new host, G. triflora in Iwate, Japan. Both the G. triflora isolate and the ex-type M. gentianae isolate produced symptoms on G. triflora, but not on G. scabra. Microscopic observations of the diseased leaves indicated that conidiogenesis was blastic from short conidiophores, and schizolytic secession of conidia left unthickened and inconspicuous conidial scars on the conidiogenous cells. Conidia were catenate, in branched acropetalous chains; secondary conidia were blastically produced from the first or second cell at the base of primary conidium. The G. triflora isolate was identified as M. gentianae because of its identity to the ex-type in characteristics of culture, pathogenicity, and conidia. Phylogenetic analyses using 3 rDNA sequences combined (SSU + LSU + 5.8S rDNA) indicated that both isolates clustered with Rhexocercosporidium carotae, and the cluster was placed within Helotiales-Rhytismatales. Additional analyses using internal transcribed spacers (ITS) including 5.8S rDNA sequences revealed that both isolates were monophyletic and that they were closely related to three helotialean Pseudocercosporella-like hyphomycetous genera, Helgardia, Rhexocercosporidium and Rhynchosporium.
L3 - 10.1007/s10267-009-0021-3
JF - Mycoscience
VL - 51
IS - 2
SP - 123
EP - 133
ER -
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