The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Ulrich Gisi - One of the best experts on this subject based on the ideXlab platform.
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the cellulose synthase 3 cesa3 gene of oomycetes structure phylogeny and influence on sensitivity to carboxylic acid amide caa fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context.
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The cellulose synthase 3 (CesA3) gene of oomycetes: structure, phylogeny and influence on sensitivity to carboxylic acid amide (CAA) fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context. (C) 2012 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
Mathias Blum - One of the best experts on this subject based on the ideXlab platform.
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the cellulose synthase 3 cesa3 gene of oomycetes structure phylogeny and influence on sensitivity to carboxylic acid amide caa fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context.
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The cellulose synthase 3 (CesA3) gene of oomycetes: structure, phylogeny and influence on sensitivity to carboxylic acid amide (CAA) fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context. (C) 2012 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
Ovidiu Constantinescu - One of the best experts on this subject based on the ideXlab platform.
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Preliminary check list of Albuginales and Peronosporales (Chromista) reported from the Iberian Peninsula and Balearic Islands
2020Co-Authors: Gema García-blázquez, Ovidiu Constantinescu, Teresa M Telleria, Maria P MartinAbstract:Abstract-The scrutiny of ca. 188 publications issued between 1867 and 2005 revealed that ca. 1500 fungus/host combinations of white rusts and downy mildews (Albuginales and Peronosporales) have been reported from Iberian Peninsula and Balearic Islands. The fungi belong to 13 genera and 101 species, and are parasitic on 266 plants belonging to 146 genera and 32 families. The hosts represent about 3.3 % of the total number of plants known from this territory. It is concluded that the probable number of fungi belonging to these two orders should be sensibly higher in this area, and that more collecting is necessary
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a new downy mildew of the rosaceae peronospora oblatispora sp nov chromista Peronosporales
Nova Hedwigia, 2007Co-Authors: Choi Youngjoon, Ovidiu Constantinescu, Shin HyeondongAbstract:Peronospora oblatispora sp. nov., parasitic on Potentilla chrysantha, P. paradoxa, P. supina and Aphanes microcarpa, is described from 11 specimens collected in France, Korea and Romania. By its oblate conidia it differs morphologically from both P. sparsa and P. potentillae. The morphological discrepancy is supported by high genetic distances to the other two species and the larger insertions in ITS rDNA.
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revision of plasmopara chromista Peronosporales parasitic on geraniaceae
Fungal Biology, 2006Co-Authors: Hermann Voglmayr, Jamshid Fatehi, Ovidiu ConstantinescuAbstract:Following a phenetic and phylogenetic analysis, five species of Plasmopara are recognized on Geraniaceae: P. pusilla and P. geranii-sylvatici in Eurasia, P. geranii in North America, P. praetermissa sp. nov. in Eurasia and North America, and P. wilsonii sp. nov. in North America and Far East Asia. Both the D1/D2 domains of the nuLSU-rDNA and the complete ITS1-5.8S rDNA-ITS2 region were analysed with MP and Bayesian methods to reveal phylogenetic relationships of the species. All species formed highly supported monophyletic lineages, which is corroborated by their distinct morphology. A key for identification, detailed descriptions, illustrations, and data on distribution are provided.
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preliminary check list of albuginales and Peronosporales chromista reported from the iberian peninsula and balearic islands
Mycotaxon, 2006Co-Authors: Gema Garciablazquez, Ovidiu Constantinescu, Teresa M Telleria, Maria P MartinAbstract:The scrutiny of ca. 188 publications issued between 1867 and 2005 revealed that ca. 1500 fungus/host combinations of white rusts and downy mildews (Albuginales and Peronosporales) have been reported from Iberian Peninsula and Balearic Islands. The fungi belong to 13 genera and 101 species, and are parasitic on 266 plants belonging to 146 genera and 32 families. The hosts represent about 3.3 % of the total number of plants known from this territory. It is concluded that the probable number of fungi belonging to these two orders should be sensibly higher in this area, and that more collecting is necessary. The complete list can be accessed at: http://www.mycotaxon.com/resources/weblists.html.
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plasmoverna gen nov and the taxonomy and nomenclature of plasmopara chromista Peronosporales
Taxon, 2005Co-Authors: Ovidiu Constantinescu, Hermann Voglmayr, Jamshid FatehiAbstract:After a review of the taxonomy and nomenclature of Plasmopara, it is concluded that this genus contains at least two groups of fungi that can be differentiated on both morphological and molecular g ...
Helge Sierotzki - One of the best experts on this subject based on the ideXlab platform.
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the cellulose synthase 3 cesa3 gene of oomycetes structure phylogeny and influence on sensitivity to carboxylic acid amide caa fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context.
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The cellulose synthase 3 (CesA3) gene of oomycetes: structure, phylogeny and influence on sensitivity to carboxylic acid amide (CAA) fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context. (C) 2012 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
Maya Waldner - One of the best experts on this subject based on the ideXlab platform.
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the cellulose synthase 3 cesa3 gene of oomycetes structure phylogeny and influence on sensitivity to carboxylic acid amide caa fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context.
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The cellulose synthase 3 (CesA3) gene of oomycetes: structure, phylogeny and influence on sensitivity to carboxylic acid amide (CAA) fungicides
Fungal Biology, 2012Co-Authors: Mathias Blum, Hannes A Gamper, Maya Waldner, Helge Sierotzki, Ulrich GisiAbstract:Proper disease control is very important to minimize yield losses caused by oomycetes in many crops. Today, oomycete control is partially achieved by breeding for resistance, but mainly by application of single-site mode of action fungicides including the carboxylic acid amides (CAAs). Despite having mostly specific targets, fungicidal activity can differ even in species belonging to the same phylum but the underlying mechanisms are often poorly understood. In an attempt to elucidate the phylogenetic basis and underlying molecular mechanism of sensitivity and tolerance to CAAs, the cellulose synthase 3 (CesA3) gene was isolated and characterized, encoding the target site of this fungicide class. The CesA3 gene was present in all 25 species included in this study representing the orders Albuginales, Leptomitales, Peronosporales, Pythiales, Rhipidiales and Saprolegniales, and based on phylogenetic analyses, enabled good resolution of all the different taxonomic orders. Sensitivity assays using the CAA fungicide mandipropamid (MPD) demonstrated that only species belonging to the Peronosporales were inhibited by the fungicide. Molecular data provided evidence, that the observed difference in sensitivity to CAAs between Peronosporales and CAA tolerant species is most likely caused by an inherent amino acid configuration at position 1109 in CesA3 possibly affecting fungicide binding. The present study not only succeeded in linking CAA sensitivity of various oomycetes to the inherent CesA3 target site configuration, but could also relate it to the broader phylogenetic context. (C) 2012 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.