@ARTICLE{TreeBASE2Ref18657,
author = {Y. J. Choi and Rolf R. Delhey and S. Danielsen and M. Lubeck and S. B. Hong and H. D. Shin},
title = {Morphological and molecular characterization of the causal agent of downy mildew on quinoa (Chenopodium quinoa)},
year = {2010},
keywords = {},
doi = {10.1007/s11046-010-9272-y},
url = {},
pmid = {},
journal = {Mycopathologia},
volume = {169},
number = {5},
pages = {403--412},
abstract = {Downy mildew is an economically important and widespread disease in quinoa (Chenopodium quinoa) growing areas. Although in many studies Peronospora farinosa is most commonly regarded as the causal agent of the disease, identification and classification of the pathogen remain still uncertain due to its taxonomic confusion. Thirty six isolates from different geographic origins including Argentina, Bolivia, Denmark, Ecuador, and Peru, were morphologically and molecularly compared with Peronospora species from other Chenopodium species. The morphology of three herbarium specimens was similar to that of P. variabilis, which originated from C. album, characterized by flexuous to curved ultimate branchlets and pedicellated conidia. Phylogenetic analysis based on ITS rDNA sequences also placed the quinoa pathogen within the same clade as P. variabilis. Within the ITS rDNA sequences of the quinoa pathogens, two base substitutions were found, which separated the majority of the Danish isolates from isolates from South America, but no sequence difference was found among the isolates from different cultivars of quinoa. The present results indicate that the pathogen responsible for the quinoa downy mildew is identical to Peronospora variabilis and that it should not be lumped with P. farinosa as claimed previously by most studies.}
}
Citation for Study 10166
Citation title:
"Morphological and molecular characterization of the causal agent of downy mildew on quinoa (Chenopodium quinoa)".
This study was previously identified under the legacy study ID S2510
(Status: Published).
Citation
Choi Y., Delhey R., Danielsen S., Lubeck M., Hong S., & Shin H. 2010. Morphological and molecular characterization of the causal agent of downy mildew on quinoa (Chenopodium quinoa). Mycopathologia, 169(5): 403-412.
Authors
-
Choi Y.
-
Delhey R.
-
Danielsen S.
-
Lubeck M.
-
Hong S.
-
Shin H.
Abstract
Downy mildew is an economically important and widespread disease in quinoa (Chenopodium quinoa) growing areas. Although in many studies Peronospora farinosa is most commonly regarded as the causal agent of the disease, identification and classification of the pathogen remain still uncertain due to its taxonomic confusion. Thirty six isolates from different geographic origins including Argentina, Bolivia, Denmark, Ecuador, and Peru, were morphologically and molecularly compared with Peronospora species from other Chenopodium species. The morphology of three herbarium specimens was similar to that of P. variabilis, which originated from C. album, characterized by flexuous to curved ultimate branchlets and pedicellated conidia. Phylogenetic analysis based on ITS rDNA sequences also placed the quinoa pathogen within the same clade as P. variabilis. Within the ITS rDNA sequences of the quinoa pathogens, two base substitutions were found, which separated the majority of the Danish isolates from isolates from South America, but no sequence difference was found among the isolates from different cultivars of quinoa. The present results indicate that the pathogen responsible for the quinoa downy mildew is identical to Peronospora variabilis and that it should not be lumped with P. farinosa as claimed previously by most studies.
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S10166
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref18657,
author = {Y. J. Choi and Rolf R. Delhey and S. Danielsen and M. Lubeck and S. B. Hong and H. D. Shin},
title = {Morphological and molecular characterization of the causal agent of downy mildew on quinoa (Chenopodium quinoa)},
year = {2010},
keywords = {},
doi = {10.1007/s11046-010-9272-y},
url = {},
pmid = {},
journal = {Mycopathologia},
volume = {169},
number = {5},
pages = {403--412},
abstract = {Downy mildew is an economically important and widespread disease in quinoa (Chenopodium quinoa) growing areas. Although in many studies Peronospora farinosa is most commonly regarded as the causal agent of the disease, identification and classification of the pathogen remain still uncertain due to its taxonomic confusion. Thirty six isolates from different geographic origins including Argentina, Bolivia, Denmark, Ecuador, and Peru, were morphologically and molecularly compared with Peronospora species from other Chenopodium species. The morphology of three herbarium specimens was similar to that of P. variabilis, which originated from C. album, characterized by flexuous to curved ultimate branchlets and pedicellated conidia. Phylogenetic analysis based on ITS rDNA sequences also placed the quinoa pathogen within the same clade as P. variabilis. Within the ITS rDNA sequences of the quinoa pathogens, two base substitutions were found, which separated the majority of the Danish isolates from isolates from South America, but no sequence difference was found among the isolates from different cultivars of quinoa. The present results indicate that the pathogen responsible for the quinoa downy mildew is identical to Peronospora variabilis and that it should not be lumped with P. farinosa as claimed previously by most studies.}
}
- Show RIS reference
TY - JOUR
ID - 18657
AU - Choi,Y. J.
AU - Delhey,Rolf R.
AU - Danielsen,S.
AU - Lubeck,M.
AU - Hong,S. B.
AU - Shin,H. D.
T1 - Morphological and molecular characterization of the causal agent of downy mildew on quinoa (Chenopodium quinoa)
PY - 2010
KW -
UR - http://dx.doi.org/10.1007/s11046-010-9272-y
N2 - Downy mildew is an economically important and widespread disease in quinoa (Chenopodium quinoa) growing areas. Although in many studies Peronospora farinosa is most commonly regarded as the causal agent of the disease, identification and classification of the pathogen remain still uncertain due to its taxonomic confusion. Thirty six isolates from different geographic origins including Argentina, Bolivia, Denmark, Ecuador, and Peru, were morphologically and molecularly compared with Peronospora species from other Chenopodium species. The morphology of three herbarium specimens was similar to that of P. variabilis, which originated from C. album, characterized by flexuous to curved ultimate branchlets and pedicellated conidia. Phylogenetic analysis based on ITS rDNA sequences also placed the quinoa pathogen within the same clade as P. variabilis. Within the ITS rDNA sequences of the quinoa pathogens, two base substitutions were found, which separated the majority of the Danish isolates from isolates from South America, but no sequence difference was found among the isolates from different cultivars of quinoa. The present results indicate that the pathogen responsible for the quinoa downy mildew is identical to Peronospora variabilis and that it should not be lumped with P. farinosa as claimed previously by most studies.
L3 - 10.1007/s11046-010-9272-y
JF - Mycopathologia
VL - 169
IS - 5
SP - 403
EP - 412
ER -
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