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dc.contributor.author
Camiletti, Boris Xavier
dc.contributor.author
Lichtemberg, Paulo dos Santos Faria
dc.contributor.author
Paredes, Juan Andres
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Carraro, Thiago A.
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Velasco, Jhordan
dc.contributor.author
Michailides, Themis J.
dc.date.available
2022-06-23T17:34:30Z
dc.date.issued
2022-06
dc.identifier.citation
Camiletti, Boris Xavier; Lichtemberg, Paulo dos Santos Faria; Paredes, Juan Andres; Carraro, Thiago A.; Velasco, Jhordan; et al.; Characterization of Colletotrichum isolates causing Colletotrichum dieback of citrus in California; American Phytopathological Society; Phytopathology; 6-2022; 1-43
dc.identifier.issn
0031-949X
dc.identifier.uri
http://hdl.handle.net/11336/160393
dc.description.abstract
Dieback caused by Colletotrichum spp. is an emerging disease in California citrus groves. A large-scale survey with emphasis on seasonal variations of latent infections was conducted throughout citrus orchards in Fresno, Kern, and Tulare counties in 2019 and 2020. Latent infections on citrus leaves and twigs varied markedly between years. Isolates of Colletotrichum spp. were obtained from asymptomatic tissue and two groups were formed based on colony and spore morphology. The morphological groups were further identified based on multigene sequence analysis using the DNA regions ITS1-5.8S-ITS2, TUB2, and GAPDH. Results revealed that isolates belong to two phylogenetic species, C. gloeosporioides and C. karstii, being C. karstii more frequently isolated. Representative isolates of each species were further selected and characterized based on the response of physiological variables to temperature. Both species had similar optimum growth temperatures but differed in maximum growth rates, with C. gloeosporioides exhibiting a greater growth rate than that of C. karstii on media. Pathogenicity tests on citrus trees demonstrated the ability of C. gloeosporioides and C. karstii to cause lesions on twigs and no differences in aggressiveness. A fungicide screening performed in this study determined that the DMI fungicides were the most effective in reducing the mycelial growth of C. gloeosporioides and C. karstii. The QoI fungicides showed a remarkably inhibitory impact on spore germination of both species. On average, C. karstii was more sensitive to the DMI fungicides than C. gloeosporioides. The findings of this study provide new information to understand the Colletotrichum dieback of citrus.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Phytopathological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MANDARIN
dc.subject
ANTHRACNOS
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FUNGICIDE
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EPIDEMIOLOGY
dc.subject.classification
Agricultura
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Characterization of Colletotrichum isolates causing Colletotrichum dieback of citrus in California
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-06-22T20:12:45Z
dc.identifier.eissn
1943-7684
dc.journal.pagination
1-43
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Camiletti, Boris Xavier. University of California at Davis; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.description.fil
Fil: Lichtemberg, Paulo dos Santos Faria. University of California at Davis; Estados Unidos
dc.description.fil
Fil: Paredes, Juan Andres. University of California at Davis; Estados Unidos. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigaciones Agropecuarias. Instituto de Patología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Carraro, Thiago A.. University of California at Davis; Estados Unidos
dc.description.fil
Fil: Velasco, Jhordan. University of California at Davis; Estados Unidos
dc.description.fil
Fil: Michailides, Themis J.. University of California at Davis; Estados Unidos
dc.journal.title
Phytopathology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://apsjournals.apsnet.org/doi/10.1094/PHYTO-10-21-0434-R
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1094/PHYTO-10-21-0434-R
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