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Interactions of the main pathogenic fungi of papaya (Carica papaya, L.) as a function of temperature

Interactions of the main pathogenic fungi of papaya (Carica papaya, L.) as a function of temperature Abstract The temperature effect on the interaction between fungal isolates of papaya was studied. Rhizopus stolonifer, Colletotrichum cobbittiense, Fusarium pernambucarum, and Alternaria arborescens were grown in papaya agar in pairs, one against the other, at 13, 25, and 35 °C. The growth rate for each fungus was compared when grown alone or paired. Four types of interaction were observed: mutual intermingling, mutual antagonism on contact, dominance on contact, and dominance at a distance. At 13 and 35 °C, F. pernambucarum was more competitive whereas at 25 °C R. stolonifer does. In vivo validation showed R. stolonifer was the dominant fungus at 25 °C but coexists with C. cobbittiense forming a second infection. Then, a hierarchy may be established through a growth mechanism to infer which fungi may develop first and damage fruit to prevent postharvest losses. These findings could improve the management of papaya fruit in the postharvest stage. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Phytopathology and Plant Protection Taylor & Francis

Interactions of the main pathogenic fungi of papaya (Carica papaya, L.) as a function of temperature

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Publisher
Taylor & Francis
Copyright
© 2023 Informa UK Limited, trading as Taylor & Francis Group
ISSN
1477-2906
eISSN
0323-5408
DOI
10.1080/03235408.2023.2203327
Publisher site
See Article on Publisher Site

Abstract

Abstract The temperature effect on the interaction between fungal isolates of papaya was studied. Rhizopus stolonifer, Colletotrichum cobbittiense, Fusarium pernambucarum, and Alternaria arborescens were grown in papaya agar in pairs, one against the other, at 13, 25, and 35 °C. The growth rate for each fungus was compared when grown alone or paired. Four types of interaction were observed: mutual intermingling, mutual antagonism on contact, dominance on contact, and dominance at a distance. At 13 and 35 °C, F. pernambucarum was more competitive whereas at 25 °C R. stolonifer does. In vivo validation showed R. stolonifer was the dominant fungus at 25 °C but coexists with C. cobbittiense forming a second infection. Then, a hierarchy may be established through a growth mechanism to infer which fungi may develop first and damage fruit to prevent postharvest losses. These findings could improve the management of papaya fruit in the postharvest stage.

Journal

Archives of Phytopathology and Plant Protection – Taylor & Francis

Published: Apr 3, 2023

Keywords: Carica papaya; fungal dominance; postharvest disease

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