CHITOSAN INHIBITS THE IN VITRO DEVELOPMENT OF Colletotrichum SP. FROM BANANA (Musa x paradisiaca L.) FRUITS
The banano (Musa x paradisiaca L.) is a tropical fruit, susceptible to infection by Colletotrichum sp. Fungicides are the most typical approach for controlling postharvest infections. Concerns regarding its negative impact on human health and the environment have prompted the quest for alternate remedies. Because of its antimicrobial activity, chitosan is an environmentally friendly alternative. This study aimed to determine the influence of chitosan on the in vitro development of Colletotrichum sp. isolated from banana fruits. Inhibition mycelial growth, spore concentration and spore germination were evaluated in three chitosan concentrations, 0.5 %, 1.0 % and 1.5 %. Optical, fluorescence, and scanning electron microscopy were used to examine the impact of chitosan on spore growth and morphology. We observed that chitosan solutions inhibited Colletotrichum species in vitro. Chitosan at 1.5 % significantly decreased the percentage of mycelial growth inhibition and spore concentration in comparison with the control. Compared to the control, a concentration of 1.5 % chitosan considerably decreased the mycelial growth and spore concentration. In addition, a complete inhibition of spore germination and a low mycelium content was observed with 1.0% and 1.5% chitosan, controlling the in vitro development of Colletotrichum sp. in banana fruits.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | eng |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología
2023
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| Online Access: | https://revistas.unal.edu.co/index.php/actabiol/article/view/103329 |
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