Characterization of Colletotrichum strains associated with olive anthracnose in Sicily
Anthracnose caused by Colletotrichum spp. is the most damaging olive fruit disease in many countries, including Italy. This disease has been sporadically detected in Sicily, but new agronomic practices can increase risk of olive anthracnose in this region. An etiological study of the disease focused...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2022-05-01
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| Series: | Phytopathologia Mediterranea |
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| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/13181 |
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| author | Grazia LICCIARDELLO Juan MORAL Maria Concetta STRANO Paola CARUSO Marika SCIARA Patrizia BELLA Guido SORRENTINO Silvia DI SILVESTRO |
| author_facet | Grazia LICCIARDELLO Juan MORAL Maria Concetta STRANO Paola CARUSO Marika SCIARA Patrizia BELLA Guido SORRENTINO Silvia DI SILVESTRO |
| author_sort | Grazia LICCIARDELLO |
| collection | DOAJ |
| description | Anthracnose caused by Colletotrichum spp. is the most damaging olive fruit disease in many countries, including Italy. This disease has been sporadically detected in Sicily, but new agronomic practices can increase risk of olive anthracnose in this region. An etiological study of the disease focused on local olive cultivars growing at the International Olive Germplasm Collection (IOGC) in Villa Zagaria, Enna, Sicily has been undertaken. During 2018 and 2019, 137 Colletotrichum strains were isolated from olives. Colony morphology, conidium characteristics, and multilocus sequence analyses aided identification of three species: C. acutatum (affecting 70% of symptomatic olives), C. gloeosporioides, and C. cigarro. Three C. acutatum strains (B13-16, P77, and P185), and one strain of each C. gloeosporioides (C2.1) and C. cigarro (Perg6B) were evaluated for pathogenicity on olive fruits from 11 Sicilian cultivars, known for their high-quality oil. Differences in virulence were detected among strains and their pathogenicity to the cultivars. The C. acutatum isolates were more virulent than those of C. gloeosporioides or C. cigarro. The Sicilian olive cultivars Cavaliera, Carolea, Calatina, and Nocellara del Belice were the most susceptible to the pathogen, while the cultivars Biancolilla and Nocellara Etnea were the most tolerant. Cultivar response under field conditions showed that anthracnose severity and fruit-rot incidence were positively correlated. This is the first report of C. acutatum and C. cigarro affecting olive trees in Sicily. Control measures for anthracnose depend on accurate characterization of the etiological agents and host cultivar resistance.
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| first_indexed | 2024-04-14T00:29:04Z |
| format | Article |
| id | doaj.art-3cfee48cf2454ab590b5ea3df69bc683 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-04-14T00:29:04Z |
| publishDate | 2022-05-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-3cfee48cf2454ab590b5ea3df69bc6832022-12-22T02:22:36ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952022-05-0161110.36253/phyto-13181Characterization of Colletotrichum strains associated with olive anthracnose in SicilyGrazia LICCIARDELLO0Juan MORAL1Maria Concetta STRANO2Paola CARUSO3Marika SCIARA4Patrizia BELLA5Guido SORRENTINO6Silvia DI SILVESTRO7Consiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Department of Agronomy, Maria de Maeztu Excellence Unit, University of Córdoba. Edif. C4, Campus de Rabanales, 14071 CórdobaConsiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Consiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Consiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Dipartimento di Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, Viale delle Scienze, Ed 4, PalermoConsiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Consiglio per la Ricerca in agricoltura e l’analisi dell’Economia Agraria-Centro di ricerca Olivicoltura, Frutticoltura e Agrumicoltura (CREA), Corso Savoia, 190 Acireale (CT)Anthracnose caused by Colletotrichum spp. is the most damaging olive fruit disease in many countries, including Italy. This disease has been sporadically detected in Sicily, but new agronomic practices can increase risk of olive anthracnose in this region. An etiological study of the disease focused on local olive cultivars growing at the International Olive Germplasm Collection (IOGC) in Villa Zagaria, Enna, Sicily has been undertaken. During 2018 and 2019, 137 Colletotrichum strains were isolated from olives. Colony morphology, conidium characteristics, and multilocus sequence analyses aided identification of three species: C. acutatum (affecting 70% of symptomatic olives), C. gloeosporioides, and C. cigarro. Three C. acutatum strains (B13-16, P77, and P185), and one strain of each C. gloeosporioides (C2.1) and C. cigarro (Perg6B) were evaluated for pathogenicity on olive fruits from 11 Sicilian cultivars, known for their high-quality oil. Differences in virulence were detected among strains and their pathogenicity to the cultivars. The C. acutatum isolates were more virulent than those of C. gloeosporioides or C. cigarro. The Sicilian olive cultivars Cavaliera, Carolea, Calatina, and Nocellara del Belice were the most susceptible to the pathogen, while the cultivars Biancolilla and Nocellara Etnea were the most tolerant. Cultivar response under field conditions showed that anthracnose severity and fruit-rot incidence were positively correlated. This is the first report of C. acutatum and C. cigarro affecting olive trees in Sicily. Control measures for anthracnose depend on accurate characterization of the etiological agents and host cultivar resistance. https://oajournals.fupress.net/index.php/pm/article/view/13181Pathogenicitymultilocus analysescultivar susceptibilityphylogenetic tree |
| spellingShingle | Grazia LICCIARDELLO Juan MORAL Maria Concetta STRANO Paola CARUSO Marika SCIARA Patrizia BELLA Guido SORRENTINO Silvia DI SILVESTRO Characterization of Colletotrichum strains associated with olive anthracnose in Sicily Phytopathologia Mediterranea Pathogenicity multilocus analyses cultivar susceptibility phylogenetic tree |
| title | Characterization of Colletotrichum strains associated with olive anthracnose in Sicily |
| title_full | Characterization of Colletotrichum strains associated with olive anthracnose in Sicily |
| title_fullStr | Characterization of Colletotrichum strains associated with olive anthracnose in Sicily |
| title_full_unstemmed | Characterization of Colletotrichum strains associated with olive anthracnose in Sicily |
| title_short | Characterization of Colletotrichum strains associated with olive anthracnose in Sicily |
| title_sort | characterization of colletotrichum strains associated with olive anthracnose in sicily |
| topic | Pathogenicity multilocus analyses cultivar susceptibility phylogenetic tree |
| url | https://oajournals.fupress.net/index.php/pm/article/view/13181 |
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