Promising antifungal activity of two varieties of Capsicum chinense against Sclerotinia sclerotiorum, Rhizopus stolonifer and Colletotrichum goleosporoides

Abstract

Peppers (Capsicum sp.) which belong to the Solanaceae family constitute an important segment in the vegetable sector, both in agriculture and in the food industry. This paper aims to investigate in vitro antifungal activity of hexane extracts from Capsicum chinense fruit (unripe bode pepper -'HE-UB' -and ripe little beak pepper -'HE-RB') against Sclerotinia sclerotiorum, Rhizopus stolonifer and Colletotrichum gloeosporioides. Antifungal activity was evaluated by the disk diffusion method (DDM) at doses between 25 µL and 300 µL of both diluted extracts. Chemical analyses revealed that the major constituent in both extracts was E-caryophyllene. HE-RB inhibited 100% of S. sclerotiorum, R. stolonifer and C. gloeosporioides growth at doses of 200 µL, 100 µL and 300 µL, respectively. HE-UB also inhibited 100% of fungal growth at doses of 100 µL (S. sclerotiorum), 150 µL (C. gloeosporioides) and 200 µL (R. stolonifer). HE-RB and HE-UB were active against the fungi under study; thus, screening of medicinal plants provides another alternative to produce chemical fungicides that are relatively non-toxic and cost-effective.

Phytochemistry and biological activities of latex from Schubertia grandiflora Mart. (Apocynaceae)

“…The agar diffusion method was used to determine the antifungal activity on Sclerotinia sclerotiorum, Colletotrichum acutatum and Colletotrichum gloeosporioides as described by Toigo et al (2022) adapted. The strains used are: SS12-21, CA15-67 and CG 16-21 respectively, from the second author's mycological bank.…”

PROSPECÇÃO FITOQUÍMICA E ATIVIDADE ANTIFÚNGICA DE EXTRATOS FLORAIS DE Tabebuia roseoalba (Ridl.) Sandwith E Jacaranda cuspidifolia Mart.

“…O método de difusão em ágar (placa), foi utilizado para determinar a atividade antifúngica sobre S. sclerotiorum, C. acutatum, C. gloeosporioides e R. stolonifer conforme descrito por Toigo et al (2022) com adaptações. As cepas utilizadas estão depositadas e identificadas no Banco Micológico do Laboratório de Química Tecnológica (SS12-21, CA15-67, CG 16-21 e RS 11-11) respectivamente, doadas pelo Laboratório de Química de Produtos Naturais e Microbiologia Agrícola do IF Goiano, Campus Rio Verde, GO, Brasil.…”