Phylogenetic identification of fungi isolated from strawberry and papaya fruits and their susceptibility to fatty acids

Strawberry (Fragaria × ananassa) and papaya (Carica papaya) are susceptible to fungal plant pathogens such as Botrytis cinerea and Colletotrichum spp., which are controlled mainly by chemical fungicides. However, their use causes adverse health effects. Therefore, the search for ecological alternati...

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Bibliographic Details
Published in:Canadian journal of plant pathology 2022-11, Vol.44 (6), p.828-835
Main Authors: Robles-Yerena, Leticia, Rodríguez-Mendoza, Johan, Santoyo, Gustavo, Ochoa-Alvarado, Xavier Iván, Medina-Estrada, Ricardo Ivan, Jiménez-Mejía, Rafael, Loeza-Lara, Pedro Damián
Format: Article
Language:English
Subjects:
Anthracnose
Antifungal activity
Antifungal alternatives
Botrytis cinerea
Botrytis cinerea, C. siamense
C. siamense, acides gras
Carica papaya
chemical fungicides
Colletotrichum
Colletotrichum nymphaeae
Ecological effects
Fatty acids
fongicides de synthèse
Fragaria ananassa
Fruits
Fungi
Fungicides
Grey mold
Health risks
Hexanoic acid
Mycelia
Papayas
Pathogens
Pesticides
Phylogenetics
Phylogeny
Signs and symptoms
Sodium
Strawberries
Substituts aux antifongiques
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Summary:Strawberry (Fragaria × ananassa) and papaya (Carica papaya) are susceptible to fungal plant pathogens such as Botrytis cinerea and Colletotrichum spp., which are controlled mainly by chemical fungicides. However, their use causes adverse health effects. Therefore, the search for ecological alternatives is essential to reduce the impact of pesticides. This study aimed to identify Botrytis spp. and Colletotrichum spp. isolated from strawberries and papaya fruits with symptoms of grey mould and anthracnose disease and to evaluate the in vitro antifungal activity of different fatty acids on their mycelial growth. Phylogenetic analysis allowed the identification of Botrytis cinerea and Colletotrichum nymphaeae isolated from strawberry and C. siamense from papaya, which have been reported as pathogens of both crops. The in vitro antifungal index (AI) of the fatty acids was determined at concentrations of 100, 1000, and 2000 µM. Inhibition assays showed AIs of 100% for B. cinerea, C. nymphaeae, and C. siamense using decanoic acid (1000 and 2000 µM). Sodium octanoate (1000 and 2000 µM) and hexanoic acid (2000 µM) also inhibited C. nymphaeae with an AI of 100%. This is the first report on the antifungal effects of decanoic acid on three isolated fungi, as well as sodium octanoate and hexanoic acid, on C. nymphaeae. These results suggest that these molecules could potentially control diseases caused by these fungi in strawberry and papaya fruits.
ISSN:0706-0661
1715-2992
DOI:10.1080/07060661.2022.2084457