Application of Volatile Antifungal Plant Essential Oils for Controlling Pepper Fruit Anthracnose by Colletotrichum gloeosporioides

Abstract

Anthracnose caused by Colletotrichum gloeosporioides has been destructive during pepper fruit production in outdoor fields in Korea. In vitro antifungal activities of 15 different plant essential oils or its components were evaluated during conidial germination and mycelial growth of C. gloeosporioides. In vitro conidial germination was most drastically inhibited by vapour treatments with carvacrol, cinnamon oil, trans-cinnamaldehyde, citral, p-cymene and linalool. Inhibition of the mycelial growth by indirect vapour treatment with essential oils was also demonstrated compared with untreated control. Carvacrol, cinnamon oil, trans-cinnamaldehyde, citral and eugenol were among the most inhibitory plant essential oils by the indirect antifungal efficacies. Plant protection efficacies of the plant essential oils were demonstrated by reduced lesion diameter on the C. gloeosporioides-inoculated immature green pepper fruits compared to the inoculated control fruits without any plant essential oil treatment. In planta test showed that all plant essential oils tested in this study demonstrated plant protection efficacies against pepper fruit anthracnose with similar levels. Thus, application of different plant essential oils can be used for eco-friendly disease management of anthracnose during pepper fruit production.

Evaluation of Clove Essential Oil as a Mycobiocide Against Rhizopus stolonifer and Fusarium solani, Tuber Rot Causing Fungi in Yam (Dioscorea rotundata Poir.)

“…Recently, Hong et al. () showed that clove oil can protect green pepper fruit from anthracnose cause by Colletotrichum gloesporioides . Moreover, Nana et al.…”

“…Sirirat and Kittipot (2010) showed that clove oil can prevent the postharvest rot of tomato and suggested that this effectiveness could be linked to the inhibition of fungal conidia germination. Recently, Hong et al (2015) showed that clove oil can protect green pepper fruit from anthracnose cause by Colletotrichum gloesporioides. Moreover, Nana et al (2015) also showed the in vivo effectiveness of clove oil to protect cocoa pod against black pod disease.…”

Effect of applying cinnamaldehyde incorporated in wax on green mould decay in citrus fruits

“…15 Hong et al reported that trans-cinnamaldehyde not only drastically inhibited the spore germination and mycelial growth of Colletotrichum gloeosporioides, which is the causal agent of anthracnose in pepper fruit, but also reduced the lesion diameter on C. gloeosporioides-inoculated immature green pepper fruit. 16 In our recent study, CA was demonstrated to be able to inhibit the mycelial growth of G. citri-aurantii and induced defence responses against sour rot in citrus fruit. 17 In addition, it was found to be effective in inhibiting aerobic, psychrophilic, yeast and mould growth on fresh-cut papaya and on fresh-cut watermelon.…”

Pathogenicity of Stem-end Rot Associated Fungi Isolated from Karthakolomban Mango and Their Control by Spray and Fumigation Treatments with Selected Essential Oils

“…T. D. Kodituwakku, K. Abeywickrama and K. O. L. C. Karunanayake Taking the pathological, physicochemical and sensory properties of mangoes subjected to essential oil treatments into consideration, cinnamon bark oil treatments could be developed for commercial application in order to introduce mango fruits to the market with a better postharvest quality. Cinnamaldehyde, which has been identifi ed as the major component in cinnamon bark oil (Kodituwakku, 2018) has been confi rmed to be an antifungal compound in many studies (Hong et al, 2015;Marei and Abdelgalei, 2018). Few other components including eugenol and caryophyllene were detected as minor compounds in smaller quantities in addition to cinnamaldehyde.…”