Journal of applied microbiology · 2022
Isolation and agricultural potential of penicillic acid against citrus canker.
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Vieira Gabrielle, Khalil Zeinab G, Capon Robert J, Sette Lara D, Ferreira Henrique, Sass Daiane C
Аннотация
AIMS: The control of Xanthomonas citri subsp. citri (X. citri), causal agent of citrus canker, relies heavily on integrated agricultural practices involving the use of copper-based chemicals. Considering the need for alternatives to control this disease and the potential of fungi from extreme environments as producers of bioactive metabolites, we isolated and identified a bioactive compound from Penicillium sp. CRM 1540 isolated from Antarctica marine sediment.
METHODS AND RESULTS: The potential of compound as an antibacterial agent against X. citri was assessed through in vitro and greenhouse experiments. Molecular taxonomy indicates that this fungus is a possible new species of Penicillium. Results revealed 90% bacterial inhibition in vitro at 25 µg ml- 1 and a decrease in 75.37% of citrus canker symptoms emergency in vivo in treated leaves of Citrus sinensis (L.) Osbeck considering the number of lesions per cm2 (p < 0.05) in comparison with the control. The structure of the active agent was identified as penicillic acid based on a detailed spectroscopic analysis.
CONCLUSION: Penicillic acid can be an alternative against citrus canker.
SIGNIFICANCE AND IMPACT OF STUDY: Research into extremophile micro-organisms can identify molecules with biotechnological potential and alternatives to current agricultural practices.
METHODS AND RESULTS: The potential of compound as an antibacterial agent against X. citri was assessed through in vitro and greenhouse experiments. Molecular taxonomy indicates that this fungus is a possible new species of Penicillium. Results revealed 90% bacterial inhibition in vitro at 25 µg ml- 1 and a decrease in 75.37% of citrus canker symptoms emergency in vivo in treated leaves of Citrus sinensis (L.) Osbeck considering the number of lesions per cm2 (p < 0.05) in comparison with the control. The structure of the active agent was identified as penicillic acid based on a detailed spectroscopic analysis.
CONCLUSION: Penicillic acid can be an alternative against citrus canker.
SIGNIFICANCE AND IMPACT OF STUDY: Research into extremophile micro-organisms can identify molecules with biotechnological potential and alternatives to current agricultural practices.