Genetic Diversity and Fungicide Sensitivity of Cytospora plurivora on Peach
D.P. Lawr., L.A. Holland & Trouillas has been associated with recent premature peach tree decline in South Carolina, but very little is known about the pathogen or chemical control options. Ninety-three isolates were collected in 2016 and 2017 from 1-year-old peach wood and symptomatic scaffold...
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| Veröffentlicht in: | Plant disease 2023-07, Vol.107 (7), p.2112-2118 |
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| creator | Baker, Stephen T Froelich, Martha H Boatwright, Harriet Wang, Hehe Schnabel, Guido Kerrigan, Julia |
| description | D.P. Lawr., L.A. Holland & Trouillas has been associated with recent premature peach tree decline in South Carolina, but very little is known about the pathogen or chemical control options. Ninety-three
isolates were collected in 2016 and 2017 from 1-year-old peach wood and symptomatic scaffold limbs, respectively, from orchards in six towns in South Carolina. Six unique genotypes were identified based on substantial ITS1-5.8S-ITS2 sequence variability and classified G1 to G6. Three of the genotypes (G2, G3, and G6) were isolated in high frequency in multiple locations of both years. In addition to the genotypic variation, multiple phenotypes were observed between and within genotype groups. Species identity was determined using additional gene loci: ACT, TUB, and EF, and isolates were found to belong to
for all genotype groups. All tested genotypes were sensitive to thiophanate-methyl (FRAC 1) but exhibited slightly lower sensitivity to propiconazole and difenoconazole (both FRAC 3). Boscalid, fluopyram (both FRAC 7s), azoxystrobin, and pyraclostrobin (both FRAC 11s) were ineffective in vitro at inhibiting mycelial growth of
genotypes. Field inoculation of peach and nectarine trees revealed that all genotypes developed twig cankers with differences in virulence. G1 was most virulent, and G6 was least virulent. This study provides a link between the
genetic variability and virulence and provides fungicide sensitivity information that could be used to improve disease management practices. |
| doi_str_mv | 10.1094/PDIS-04-22-0790-RE |
| format | Article |
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for all genotype groups. All tested genotypes were sensitive to thiophanate-methyl (FRAC 1) but exhibited slightly lower sensitivity to propiconazole and difenoconazole (both FRAC 3). Boscalid, fluopyram (both FRAC 7s), azoxystrobin, and pyraclostrobin (both FRAC 11s) were ineffective in vitro at inhibiting mycelial growth of
genotypes. Field inoculation of peach and nectarine trees revealed that all genotypes developed twig cankers with differences in virulence. G1 was most virulent, and G6 was least virulent. This study provides a link between the
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isolates were collected in 2016 and 2017 from 1-year-old peach wood and symptomatic scaffold limbs, respectively, from orchards in six towns in South Carolina. Six unique genotypes were identified based on substantial ITS1-5.8S-ITS2 sequence variability and classified G1 to G6. Three of the genotypes (G2, G3, and G6) were isolated in high frequency in multiple locations of both years. In addition to the genotypic variation, multiple phenotypes were observed between and within genotype groups. Species identity was determined using additional gene loci: ACT, TUB, and EF, and isolates were found to belong to
for all genotype groups. All tested genotypes were sensitive to thiophanate-methyl (FRAC 1) but exhibited slightly lower sensitivity to propiconazole and difenoconazole (both FRAC 3). Boscalid, fluopyram (both FRAC 7s), azoxystrobin, and pyraclostrobin (both FRAC 11s) were ineffective in vitro at inhibiting mycelial growth of
genotypes. Field inoculation of peach and nectarine trees revealed that all genotypes developed twig cankers with differences in virulence. G1 was most virulent, and G6 was least virulent. This study provides a link between the
genetic variability and virulence and provides fungicide sensitivity information that could be used to improve disease management practices.</description><subject>Ascomycota - genetics</subject><subject>Fungicides, Industrial - pharmacology</subject><subject>Genetic Variation</subject><subject>Plant Diseases</subject><issn>0191-2917</issn><issn>1943-7692</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVUclOwzAQtRCIlsIPcEA5cjF4ix2fEOoGAglE4Wy5jtMapXGxk0j9exJRKjjNaN4yozcAXGJ0g5Fkt6-TxwVEDBICkZAIvk2PwBBLRqHgkhyDIcISQyKxGICzGD8RQozx7BQMKE8xYpQOwdPcVrZ2Jpm41obo6l2iqzyZNdXKGZfbZGGrburaHvFFMt7VPm590Mm2bIJr-85XyavVZn0OTgpdRnuxryPwMZu-jx_g88v8cXz_DA1NZQ0zRLilXOgsFTkuCKdFnuOU0KVJJZFcdkcazArBtZCYE8t1R9QmN5kRjBg6Anc_vttmubG5sVUddKm2wW102CmvnfqPVG6tVr5VXWqcC4w6h-u9Q_BfjY212rhobFnqyvomKiJShpjMpOyo5Idqgo8x2OKwB6PekKn-DQoxRYjq36Depp3o6u-FB8lv7vQbqr6EyQ</recordid><startdate>202307</startdate><enddate>202307</enddate><creator>Baker, Stephen T</creator><creator>Froelich, Martha H</creator><creator>Boatwright, Harriet</creator><creator>Wang, Hehe</creator><creator>Schnabel, Guido</creator><creator>Kerrigan, Julia</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-9642-1920</orcidid><orcidid>https://orcid.org/0000-0002-1140-5818</orcidid><orcidid>https://orcid.org/0000-0003-1586-8876</orcidid></search><sort><creationdate>202307</creationdate><title>Genetic Diversity and Fungicide Sensitivity of Cytospora plurivora on Peach</title><author>Baker, Stephen T ; Froelich, Martha H ; Boatwright, Harriet ; Wang, Hehe ; Schnabel, Guido ; Kerrigan, Julia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c359t-8026e367a857d1f263fdd1523bc592969446c14f76a79162e6a57dacdc8c742c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Ascomycota - genetics</topic><topic>Fungicides, Industrial - pharmacology</topic><topic>Genetic Variation</topic><topic>Plant Diseases</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baker, Stephen T</creatorcontrib><creatorcontrib>Froelich, Martha H</creatorcontrib><creatorcontrib>Boatwright, Harriet</creatorcontrib><creatorcontrib>Wang, Hehe</creatorcontrib><creatorcontrib>Schnabel, Guido</creatorcontrib><creatorcontrib>Kerrigan, Julia</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Plant disease</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baker, Stephen T</au><au>Froelich, Martha H</au><au>Boatwright, Harriet</au><au>Wang, Hehe</au><au>Schnabel, Guido</au><au>Kerrigan, Julia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Genetic Diversity and Fungicide Sensitivity of Cytospora plurivora on Peach</atitle><jtitle>Plant disease</jtitle><addtitle>Plant Dis</addtitle><date>2023-07</date><risdate>2023</risdate><volume>107</volume><issue>7</issue><spage>2112</spage><epage>2118</epage><pages>2112-2118</pages><issn>0191-2917</issn><eissn>1943-7692</eissn><abstract>D.P. Lawr., L.A. Holland & Trouillas has been associated with recent premature peach tree decline in South Carolina, but very little is known about the pathogen or chemical control options. Ninety-three
isolates were collected in 2016 and 2017 from 1-year-old peach wood and symptomatic scaffold limbs, respectively, from orchards in six towns in South Carolina. Six unique genotypes were identified based on substantial ITS1-5.8S-ITS2 sequence variability and classified G1 to G6. Three of the genotypes (G2, G3, and G6) were isolated in high frequency in multiple locations of both years. In addition to the genotypic variation, multiple phenotypes were observed between and within genotype groups. Species identity was determined using additional gene loci: ACT, TUB, and EF, and isolates were found to belong to
for all genotype groups. All tested genotypes were sensitive to thiophanate-methyl (FRAC 1) but exhibited slightly lower sensitivity to propiconazole and difenoconazole (both FRAC 3). Boscalid, fluopyram (both FRAC 7s), azoxystrobin, and pyraclostrobin (both FRAC 11s) were ineffective in vitro at inhibiting mycelial growth of
genotypes. Field inoculation of peach and nectarine trees revealed that all genotypes developed twig cankers with differences in virulence. G1 was most virulent, and G6 was least virulent. This study provides a link between the
genetic variability and virulence and provides fungicide sensitivity information that could be used to improve disease management practices.</abstract><cop>United States</cop><pmid>36510433</pmid><doi>10.1094/PDIS-04-22-0790-RE</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-9642-1920</orcidid><orcidid>https://orcid.org/0000-0002-1140-5818</orcidid><orcidid>https://orcid.org/0000-0003-1586-8876</orcidid></addata></record> |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection; American Phytopathological Society Journal Back Issues |
| subjects | Ascomycota - genetics Fungicides, Industrial - pharmacology Genetic Variation Plant Diseases |
| title | Genetic Diversity and Fungicide Sensitivity of Cytospora plurivora on Peach |
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