Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island
Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·...
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| Autor*in: |
Peters, R. D. [verfasserIn] Sturz, A. V. [verfasserIn] Matheson, B. G. [verfasserIn] |
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E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Science Ltd ; 2001 |
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Online-Ressource |
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2001 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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In: Plant pathology - Oxford [u.a.] : Wiley-Blackwell, 1952, 50(2001), 3, Seite 0 |
| Übergeordnetes Werk: |
volume:50 ; year:2001 ; number:3 ; pages:0 |
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| DOI / URN: |
10.1046/j.1365-3059.2001.00566.x |
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| 520 | |a Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. | ||
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10.1046/j.1365-3059.2001.00566.x doi (DE-627)NLEJ243800738 DE-627 ger DE-627 rakwb Peters, R. D. verfasserin aut Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island Oxford, UK Blackwell Science Ltd 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| fungicide resistance Sturz, A. V. verfasserin aut Matheson, B. G. verfasserin aut Arsenault, W. J. oth Malone, A. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 50(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:50 year:2001 number:3 pages:0 http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 50 2001 3 0 |
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10.1046/j.1365-3059.2001.00566.x doi (DE-627)NLEJ243800738 DE-627 ger DE-627 rakwb Peters, R. D. verfasserin aut Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island Oxford, UK Blackwell Science Ltd 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| fungicide resistance Sturz, A. V. verfasserin aut Matheson, B. G. verfasserin aut Arsenault, W. J. oth Malone, A. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 50(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:50 year:2001 number:3 pages:0 http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 50 2001 3 0 |
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10.1046/j.1365-3059.2001.00566.x doi (DE-627)NLEJ243800738 DE-627 ger DE-627 rakwb Peters, R. D. verfasserin aut Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island Oxford, UK Blackwell Science Ltd 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| fungicide resistance Sturz, A. V. verfasserin aut Matheson, B. G. verfasserin aut Arsenault, W. J. oth Malone, A. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 50(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:50 year:2001 number:3 pages:0 http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 50 2001 3 0 |
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10.1046/j.1365-3059.2001.00566.x doi (DE-627)NLEJ243800738 DE-627 ger DE-627 rakwb Peters, R. D. verfasserin aut Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island Oxford, UK Blackwell Science Ltd 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| fungicide resistance Sturz, A. V. verfasserin aut Matheson, B. G. verfasserin aut Arsenault, W. J. oth Malone, A. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 50(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:50 year:2001 number:3 pages:0 http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 50 2001 3 0 |
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10.1046/j.1365-3059.2001.00566.x doi (DE-627)NLEJ243800738 DE-627 ger DE-627 rakwb Peters, R. D. verfasserin aut Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island Oxford, UK Blackwell Science Ltd 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. 2001 Blackwell Publishing Journal Backfiles 1879-2005 |2001|||||||||| fungicide resistance Sturz, A. V. verfasserin aut Matheson, B. G. verfasserin aut Arsenault, W. J. oth Malone, A. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 50(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:50 year:2001 number:3 pages:0 http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 50 2001 3 0 |
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Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island |
| abstract |
Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. |
| abstractGer |
Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. |
| abstract_unstemmed |
Isolates of Phytophthora erythroseptica, causal agent of pink rot of potato, were obtained from diseased tubers collected in Prince Edward Island (PEI), Canada. In an in vitro assay of field and single-zoospore isolates, all isolates of the pathogen from PEI were sensitive to metalaxyl (EC50 < 0·5 µg mL−1), unlike moderately or highly resistant reference isolates obtained from Maine, USA. Allozyme-banding patterns at the glucose-6-phosphate isomerase (Gpi) locus were identical (91/91) for all isolates of P. erythroseptica examined from PEI and Maine, but could be used to distinguish isolates of P. erythroseptica from local isolates of Phytophthora infestans. Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory to metalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage. By contrast, moderately or highly resistant isolates of the pathogen caused significantly (P ≤ 0·05) more disease than sensitive isolates in tubers from plants treated with metalaxyl. The effectiveness of metalaxyl in controlling pink rot in a particular region will depend on resistance levels of local populations of P. erythroseptica. Preventing the development and spread of resistant strains of P. erythroseptica will be critical in maintaining metalaxyl as an effective chemical for control of this pathogen. |
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| title_short |
Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island |
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http://dx.doi.org/10.1046/j.1365-3059.2001.00566.x |
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Sturz, A. V. Matheson, B. G. Arsenault, W. J. Malone, A. |
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Sturz, A. V. Matheson, B. G. Arsenault, W. J. Malone, A. |
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10.1046/j.1365-3059.2001.00566.x |
| up_date |
2024-07-06T06:35:06.407Z |
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