Antifungal Activity of Essential Oils from Three <i>Artemisia</i> Species against <i>Colletotrichum gloeosporioides</i> of Mango
Post-harvest diseases of mango reduce fruit quality and cause severe yield losses with completely unmarketable fruits. The most common diseases of mangos are anthracnose (<i>Colletotrichum gloeosporioides</i>). In this study, the antibacterial activities of essential oils from <i>A...
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| Auteurs principaux: | , , , , , |
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| Format: | article |
| Langue: | EN |
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MDPI AG
2021
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| Accès en ligne: | https://doaj.org/article/494836a91d7b4cd6aa9b4b83f4f6eed7 |
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| Résumé: | Post-harvest diseases of mango reduce fruit quality and cause severe yield losses with completely unmarketable fruits. The most common diseases of mangos are anthracnose (<i>Colletotrichum gloeosporioides</i>). In this study, the antibacterial activities of essential oils from <i>Artemisia scoparia</i>, <i>Artemisia lavandulaefolia</i>, and <i>Artemisia annua</i> against <i>C. gloeosporioides</i> were tested. The results showed that the essential oil of <i>A. scoparia</i> was more effective by the agar diffusion method; the EC<sub>50</sub> value was 9.32 µL/mL. The inhibition rate was 100%, at a concentration of 10 μL/mL, through the spore germination method. The morphological changes of the mycelium were observed by scanning electron microscopy (SEM), the mycelia treated with essential oils showed shrinking, deformity, fracture, and dryness through SEM. <i>A</i>. <i>scoparia</i> essential oil was inoculated in vivo and subjected to paroxysm testing under natural conditions. <i>A. scoparia</i> had significantly inhibitory activity, and the inhibition rate was 66.23% in vivo inoculation tests after 10 days. The inhibition rate was 92.06% in the paroxysm test under natural conditions after 15 days. Finally, <i>A. acoparia</i> essential oil was analyzed by gas chromatography-mass spectrometry. The main compounds were 2-ethenyl-Naphthalene (23.5%), 2,4-pentadiynyl-Benzene (11.8%), 1,2-dimethoxy-4-(2-propenyl)-Benzene (10.0%), β-Pinene (8.0%), and 1-methyl-4-(1-methylethyl)-1,4-Cyclohexadiene (6.3%). The results have revealed the potential use of <i>A. scoparia</i> essential oil against post-harvest fungal pathogens <i>C. gloeosporioides</i>. |
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