Fungal Pathogens Associated With Canker Diseases of Almond in California

Almond canker diseases are destructive and can reduce the yield as well as the lifespan of almond orchards. These diseases may affect the trunk and branches of both young and mature trees and can result in tree death soon after orchard establishment in severe cases. Between 2015 and 2018, 70 almond...

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Veröffentlicht in:Plant disease. - 1997. - 105(2021), 2 vom: 11. Feb., Seite 346-360
1. Verfasser: Holland, Leslie A (VerfasserIn)
Weitere Verfasser: Trouillas, Florent P, Nouri, Mohamed T, Lawrence, Daniel P, Crespo, Maria, Doll, David A, Duncan, Roger A, Holtz, Brent A, Culumber, Catherine M, Yaghmour, Mohammad A, Niederholzer, Franz J A, Lightle, Danielle M, Jarvis-Shean, Katherine S, Gordon, Phoebe E, Fichtner, Elizabeth J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Botryosphaeriaceae Ceratocystis Collophorina Cytospora Diaporthe Eutypa Pallidophorina almond canker mehr... etiology DNA, Fungal
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520 |a Almond canker diseases are destructive and can reduce the yield as well as the lifespan of almond orchards. These diseases may affect the trunk and branches of both young and mature trees and can result in tree death soon after orchard establishment in severe cases. Between 2015 and 2018, 70 almond orchards were visited throughout the Central Valley of California upon requests from farm advisors for canker disease diagnosis. Two major canker diseases were identified, including Botryosphaeriaceae cankers and Ceratocystis canker. In addition, five less prevalent canker diseases were identified, including Cytospora, Eutypa, Diaporthe, Collophorina, and Pallidophorina canker. Seventy-four fungal isolates were selected for multilocus phylogenetic analyses of internal transcribed spacer region ITS1-5.8S-ITS2 and part of the translation elongation factor 1-α, β-tubulin, and glyceraldehyde 3-phosphate dehydrogenase gene sequences; 27 species were identified, including 12 Botryosphaeriaceae species, Ceratocystis destructans, five Cytospora species, Collophorina hispanica, four Diaporthe species, two Diatrype species, Eutypa lata, and Pallidophorina paarla. The most frequently isolated species were Ceratocystis destructans, Neoscytalidium dimidiatum, and Cytospora californica. Pathogenicity experiments on almond cultivar Nonpareil revealed that Neofusicoccum parvum, Neofusicoccum arbuti, and Neofusicoccum mediterraneum were the most virulent. Botryosphaeriaceae cankers were predominantly found in young orchards and symptoms were most prevalent on the trunks of trees. Ceratocystis canker was most commonly found in mature orchards and associated with symptoms found on trunks or large scaffold branches. This study provides a thorough examination of the diversity and pathogenicity of fungal pathogens associated with branch and trunk cankers of almond in California 
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650 4 |a Botryosphaeriaceae 
650 4 |a Ceratocystis 
650 4 |a Collophorina 
650 4 |a Cytospora 
650 4 |a Diaporthe 
650 4 |a Eutypa 
650 4 |a Pallidophorina 
650 4 |a almond 
650 4 |a canker 
650 4 |a etiology 
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700 1 |a Trouillas, Florent P  |e verfasserin  |4 aut 
700 1 |a Nouri, Mohamed T  |e verfasserin  |4 aut 
700 1 |a Lawrence, Daniel P  |e verfasserin  |4 aut 
700 1 |a Crespo, Maria  |e verfasserin  |4 aut 
700 1 |a Doll, David A  |e verfasserin  |4 aut 
700 1 |a Duncan, Roger A  |e verfasserin  |4 aut 
700 1 |a Holtz, Brent A  |e verfasserin  |4 aut 
700 1 |a Culumber, Catherine M  |e verfasserin  |4 aut 
700 1 |a Yaghmour, Mohammad A  |e verfasserin  |4 aut 
700 1 |a Niederholzer, Franz J A  |e verfasserin  |4 aut 
700 1 |a Lightle, Danielle M  |e verfasserin  |4 aut 
700 1 |a Jarvis-Shean, Katherine S  |e verfasserin  |4 aut 
700 1 |a Gordon, Phoebe E  |e verfasserin  |4 aut 
700 1 |a Fichtner, Elizabeth J  |e verfasserin  |4 aut 
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