Cercospora leaf spot of olive in Uruguay
Cercospora Leaf Spot (CLS) of olive is an important fungal disease in Uruguay, causing severe early defoliation. Fungal isolates were obtained from olive leaves with typical CLS symptoms from Uruguayan orchards. The isolates were identified based on phenotypic characteristics and DNA sequence analys...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2023-12-01
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| Series: | Phytopathologia Mediterranea |
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| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/14675 |
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| author | Pamela LOMBARDO Carolina LEONI Sandra ALANIZ Pedro MONDINO |
| author_facet | Pamela LOMBARDO Carolina LEONI Sandra ALANIZ Pedro MONDINO |
| author_sort | Pamela LOMBARDO |
| collection | DOAJ |
| description | Cercospora Leaf Spot (CLS) of olive is an important fungal disease in Uruguay, causing severe early defoliation. Fungal isolates were obtained from olive leaves with typical CLS symptoms from Uruguayan orchards. The isolates were identified based on phenotypic characteristics and DNA sequence analyses. Infection processes under field conditions were characterized. Phylogenetic analyses confirmed that Pseudocercospora cladosporioides is the causal agent of CLS in Uruguay. Three colony morphologies were observed for isolates growing on potato dextrose agar. Mean conidium length ranged from 65.7 to 101.8 µm, and widths from 4.3 to 5.0 µm. Mean optimum growth temperature was 21.5°C (range 19.2 to 24.8°C). Under field conditions, initial CLS symptoms on leaves were observed 5 months after inoculation of cv. Arbequina plants, confirming the disease’s lengthy incubation period. This study shows that CLS as one of the most prevalent and destructive olive diseases in Uruguay, and emphasizes the importance of further research to develop efficient management of this disease. |
| format | Article |
| id | doaj-art-4f2f88c008f14c539d9e77879dbb48b3 |
| institution | OA Journals |
| issn | 0031-9465 1593-2095 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj-art-4f2f88c008f14c539d9e77879dbb48b32025-08-20T02:11:29ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952023-12-0162341342610.36253/phyto-1467513504Cercospora leaf spot of olive in UruguayPamela LOMBARDO0https://orcid.org/0000-0002-6711-6556Carolina LEONI1https://orcid.org/0000-0002-3891-564XSandra ALANIZ2https://orcid.org/0000-0002-6530-7279Pedro MONDINO3https://orcid.org/0000-0002-4494-5271Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Gral. Rivera 1350 CP 50000, SaltoUnidad de Protección Vegetal, INIA Las Brujas, Ruta 48 km10, Rincón del Colorado, CP 90100, CanelonesDepartamento de Protección Vegetal, Facultad de Agronomía, Universidad de la República, Av. Garzón 780 CP 12900, MontevideoDepartamento de Protección Vegetal, Facultad de Agronomía, Universidad de la República, Av. Garzón 780 CP 12900, MontevideoCercospora Leaf Spot (CLS) of olive is an important fungal disease in Uruguay, causing severe early defoliation. Fungal isolates were obtained from olive leaves with typical CLS symptoms from Uruguayan orchards. The isolates were identified based on phenotypic characteristics and DNA sequence analyses. Infection processes under field conditions were characterized. Phylogenetic analyses confirmed that Pseudocercospora cladosporioides is the causal agent of CLS in Uruguay. Three colony morphologies were observed for isolates growing on potato dextrose agar. Mean conidium length ranged from 65.7 to 101.8 µm, and widths from 4.3 to 5.0 µm. Mean optimum growth temperature was 21.5°C (range 19.2 to 24.8°C). Under field conditions, initial CLS symptoms on leaves were observed 5 months after inoculation of cv. Arbequina plants, confirming the disease’s lengthy incubation period. This study shows that CLS as one of the most prevalent and destructive olive diseases in Uruguay, and emphasizes the importance of further research to develop efficient management of this disease.https://oajournals.fupress.net/index.php/pm/article/view/14675‘arbequina’etiologyolea europaeapseudocercospora cladosporioides |
| spellingShingle | Pamela LOMBARDO Carolina LEONI Sandra ALANIZ Pedro MONDINO Cercospora leaf spot of olive in Uruguay Phytopathologia Mediterranea ‘arbequina’ etiology olea europaea pseudocercospora cladosporioides |
| title | Cercospora leaf spot of olive in Uruguay |
| title_full | Cercospora leaf spot of olive in Uruguay |
| title_fullStr | Cercospora leaf spot of olive in Uruguay |
| title_full_unstemmed | Cercospora leaf spot of olive in Uruguay |
| title_short | Cercospora leaf spot of olive in Uruguay |
| title_sort | cercospora leaf spot of olive in uruguay |
| topic | ‘arbequina’ etiology olea europaea pseudocercospora cladosporioides |
| url | https://oajournals.fupress.net/index.php/pm/article/view/14675 |
| work_keys_str_mv | AT pamelalombardo cercosporaleafspotofoliveinuruguay AT carolinaleoni cercosporaleafspotofoliveinuruguay AT sandraalaniz cercosporaleafspotofoliveinuruguay AT pedromondino cercosporaleafspotofoliveinuruguay |