Effect of apple cultivars and storage periods on the virulence of Neofabraea spp
| Autor: | A. Di Francesco, Fiorella Neri, L. Barbanti, Alice Spadoni, I. Cameldi, Elena Baraldi, Annibale Folchi |
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| Přispěvatelé: | Di Francesco Alessandra, Cameldi Irene, Neri Fiorella, Barbanti L., Annibale Folchi, Spadoni A., Elena Baraldi |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
apple cultivars
bull’s eye rot enzyme activity pathogenicity postharvest disease biology Bull's-eye rot Virulence Plant Science apple cultivars bull’s eye rot enzyme activity pathogenicity postharvest disease Horticulture Pathogenicity biology.organism_classification Enzyme assay Genetics biology.protein Cultivar Agronomy and Crop Science Neofabraea |
| Popis: | Bull’s eye rot is a typical quiescent postharvest apple disease in major fruit‐growing areas. The susceptibility of different apple cultivars to Neofabraea spp. (N. vagabunda and N. malicorticis) was assessed, with Granny Smith showing the most resistance and Cripps Pink the most susceptibility. To assess the factors involved in conidial germination, Neofabraea spp. were grown on crude protein extracts (CPEs) collected from apple fruits at different storage periods. Fungal germ tube growth rate and pathogenic enzyme (cellulase and xylanase) activity were assessed. Results showed that CPEs collected after 2 and 4 months of storage progressively stimulated conidial germination and germ tube elongation, while a lesser effect was observed from CPEs after 1 month of storage. Xylanase proved to be the main degrading enzyme secreted by all the isolates, while cellulase was produced only by N. vagabunda isolates. Overall, the isolate ID02 was the most virulent, based on more rapid germ tube elongation and greater activity of the lytic enzymes. |
| Databáze: | OpenAIRE |
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