Abstract
Anthracnose is a plant disease that can infect a variety of plants worldwide. Fungal pathogen groups are the cause of anthracnose, one of which is Colletotrichum acutatum. Morinda citrifolia is famous for having antimicrobial activity. This study aims to determine the antifungal activity of M. citrifolia leaves extract against the growth of the fungus C. acutatum. The extract solvent used was 96% ethanol. The experiment consisted of five treatments (0%, 20%, 40%, 60% and propineb 0.1% as positive control). The method used in this study was the poisoned food technique. In this technique, C. acutatum was grown on PDA media mixed with M. citrifolia leaves extract. Antifungal activity was observed based on reduced mycelium growth compared to control. Observations were made every day by measuring the diameter of the fungus mycelium for eleven days. The analysis showed that 60% M. citrifolia leaves extract effectively inhibited the growth of the mycelium C. acutatum on the eleventh day of observation.
Highlights
Anthracnose is a common pathogen found in plants
Noni (Morinda citrifolia) leaves are taken from the field in the Umbulharjo Yogyakarta
Noni leaf extract was mixed into PDA media, used for fungal growth
Summary
Anthracnose is a common pathogen found in plants This disease causes crop losses of up to 80-100% (Coelho et al, 2013; Bill et al., 2014). Colletotrichum acutatum causes anthracnose in several important crops such as chili, citrus, mango, strawberry, and avocado (Wharton & Diéguez-Uribeondo, 2004; Ibrahim, 2017). This species is often mistakenly identified as Colletotrichum gloeosporioides it has a similar range of hosts and morphology. Some plants can produce metabolites that are beneficial to medical plants These medical plant extracts have been shown to reduce the incidence of plant-pathogen infections in various crops. This study aims to analyze the antifungal activity of noni leaf extract against C. acutatum in vitro
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