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Miho H, Expósito-Díaz A, Marquez-Perez MI, Ledesma-Escobar C, Diez CM, Prusky D, Priego-Capote F, Moral J. The dynamic changes in olive fruit phenolic metabolism and its contribution to the activation of quiescent Colletotrichum infection. Food Chem 2024; 450:139299. [PMID: 38613962 DOI: 10.1016/j.foodchem.2024.139299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/14/2024] [Accepted: 04/07/2024] [Indexed: 04/15/2024]
Abstract
Anthracnose, the most critical disease affecting olive fruits, is caused by Colletotrichum species. While developing olive fruits are immune to the pathogen regardless of the cultivar, the resistance level varies once the fruit ripens. The defense mechanisms responsible for this difference in resistance are not well understood. To explore this, we analyzed the phenolic metabolic pathways occurring in olive fruits and their susceptibility to the pathogen during ripening in two resistant cultivars ('Empeltre' and 'Frantoio') and two susceptible cultivars ('Hojiblanca' and 'Picudo'). Overall, resistant cultivars induced the synthesis of aldehydic and demethylated forms of phenols, which highly inhibited fungal spore germination. In contrast, susceptible cultivars promoted the synthesis of hydroxytyrosol 4-O-glucoside during ripening, a compound with no antifungal effect. This study showed that the distinct phenolic profiles between resistant and susceptible cultivars play a key role in determining olive fruit resistance to Colletotrichum species.
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Affiliation(s)
- H Miho
- Department of Agronomy, Campus of Rabanales, University of Cordoba, Spain; Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain.
| | - A Expósito-Díaz
- Department of Agronomy, Campus of Rabanales, University of Cordoba, Spain; Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain
| | - M I Marquez-Perez
- Department of Agronomy, Campus of Rabanales, University of Cordoba, Spain; Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain
| | - C Ledesma-Escobar
- Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain; Department of Analytical Chemistry, Campus of Rabanales, University of Cordoba, Spain
| | - C M Diez
- Department of Agronomy, Campus of Rabanales, University of Cordoba, Spain; Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain
| | - D Prusky
- Department of Postharvest Science, Agricultural Research Organization, Rishon LeTzion, Israel
| | - F Priego-Capote
- Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain; Department of Analytical Chemistry, Campus of Rabanales, University of Cordoba, Spain; Maimonides Institute of Biomedical Research (IMIBIC), Reina Sofia University Hospital, Spain.
| | - J Moral
- Department of Agronomy, Campus of Rabanales, University of Cordoba, Spain; Agroalimentary Excellence Campus (ceiA3), University of Cordoba, Campus of Rabanales, Spain.
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