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Scanning electron microscopy of the interaction between Cryptococcus magnus and Colletotrichum gloeosporioides on papaya fruit

2007; Embrapa Informação Tecnológica; Volume: 42; Issue: 11 Linguagem: Inglês

10.1590/s0100-204x2007001100004

ISSN

1678-3921

Autores

Guy de Capdeville, Manoel Teixeira Souza, Jansen Rodrigo Pereira Santos, Simoni Paula Miranda, Alexandre Rodrigues Caetano, Rosana Falcão, Ana Cristina Menezes Mendes Gomes,

Tópico(s)

Yeasts and Rust Fungi Studies

Resumo

The objective of this work was to investigate possible modes of action of the yeast Cryptococcus magnus in controlling anthracnose (Colletotrichum gloeosporioides) on post harvested papaya fruits. Scanning electron microscopy was used to analyze the effect of the yeast on inoculations done after harvest. Results showed that C. magnus is able to colonize wound surfaces much faster than the pathogen, outcompeting the later for space and probably for nutrients. In addition, C. magnus produces a flocculent matrix, which affects hyphae integrity. The competition for space and the production of substances that affect hyphae integrity are among the most important modes of action of this yeast.

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