Colletotrichum acutatum complex isolated from apple flowers can cause bitter rot and Glomerella leaf spot
| Autor: | Natasha Akemi Hamada, Rafaele Regina Moreira, Josiane Aparecida Gomes Figueiredo, Louise Larissa May De Mio |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
biology
Inoculation Agriculture (General) Materials Science (miscellaneous) fungi food and beverages biology.organism_classification S1-972 Conidium Horticulture Colletotrichum acutatum Colletotrichum Malus domestica quiescent infection Glomerella Leaf spot epidemiology Cultivar General Agricultural and Biological Sciences Mycelium |
| Zdroj: | Bragantia, Volume: 79, Issue: 3, Pages: 399-406, Published: 08 JUL 2020 Bragantia, Issue: ahead, Published: 08 JUL 2020 Bragantia, Vol 79, Iss 3, Pp 399-406 (2020) Bragantia v.79 n.3 2020 Bragantia Instituto Agronômico de Campinas (IAC) instacron:IAC |
| Popis: | The Glomerella leaf spot (GLS) and bitter rot (BR) are important apple diseases in Brazil, caused by species of Colletotrichum, which are usually related with quiescent infection. This study aimed to detect quiescent infections of Colletotrichum spp. in flowers and in unripe fruits from apple commercial orchard cultivars Eva and Gala. The pathogen was observed in various structures of the flower in both cultivars. In unripe fruits, the pathogen was recovered only from ‘Eva’. Five isolates were obtained and were inoculated by mycelial (with and without wound) on ripe apple fruits and by conidia suspension (without wound) on ripe apple fruits and leaves of ‘Gala’. On inoculated fruits by mycelial, the isolates induced symptoms of BR, and on inoculated fruits by conidia without wound the isolates induced symptoms of GLS. On inoculated leaves, isolates induced symptoms of GLS. The isolates were characterized by cultural, morphological and pathogenic aspects. Detection of Colletotrichum spp. in asymptomatic apple flowers is epidemiologically important, since the flowers can be a route for infection in unripe fruits. This is the first investigation of quiescent infection of this pathogen on apple flowers. |
| Databáze: | OpenAIRE |
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