Abstract
The aim of present research was focused on the antifungal activities of Prunella vulgaris L and Paeonia suffruticosa Andrews via in vitro approach through agar well diffusion assay at three concentrations (25 uL, 50 uL and 75 uL) against fungi causing diseases in tomato and brinjal. All the concentration of plant extracts showed antimycotic activity against tested pathogenic fungi. Antimycotic activity increased with the increased concentrations of plant extracts. However, higher concentrations proved more effective than lower concentrations. It was revealed from the present study that the ethanolic and aqueous extracts of Prunella vulgaris L showed maximum antimycotic activity against Rhizoctonia solani and least inhibitory effect against Penicillium chrysogenum. It was further revealed from the present study that the ethanolic extract of Paeonia suffruticosa Andrews showed maximum antimycotic activity against Penicillium expansum and least activity against Mucor plumbeus. Whereas the aqueous extract of Paeonia suffruticosa Andrews showed maximum antimycotic activity against Rhizoctonia solani and Penicllium expansum and least inhibitory effect against Mucor plumbeus.
Highlights
Almost, all plants are attacked by a number of plant pathogenic fungi resulting in many plant diseases which reduce their yield and quality of the products
Effect of leaf extracts of Prunellla vulgaris L on the zone of mycelial inhibition of some rot causing fungi. It was found from the results (Table 1, Figure 1) that the ethanolic leaf extract of Prunella vulgaris L. caused maximum inhibitory activity of mycelial growth at 25 μL, 50 μL and 75 μL concentrations with zone of inhibition of 22.66 mm, 24.33 mm and 26.00 mm against Rhizoctonia solani, respectively
It was observed from results (Table 2, Figure 2) that the aqueous extract of Prunella vulgaris L. showed maximum inhibitory activity in mycelial growth against Rhizoctonia solani at 25 μL, 50 μL and 75 μL concentrations with zone of inhibition of 20.33 mm, 22.66 mm and 24.66 mm, respectively
Summary
All plants are attacked by a number of plant pathogenic fungi resulting in many plant diseases which reduce their yield and quality of the products. Fungal rots are world-wide in occurrence and have been reported from all parts of the world (Janisiewicz and Korsten, 2002).The destructive pathogen causing rots on tomato is present in parts of ISSN 2358-2731/BJBS-2020-0049/2020/7/16/10/229. Various workers have isolated and identified a diverse range of fungal pathogens belonging to the genera Alternaria, Aspergillus, Rhizopus, Mucor, Penicillium, Phoma, Fusarium, causing rot diseases of various fruits and vegetables (Snowdon, 1990; Jones, 1991; Iqbal et al, 2003; Mari et al, 2003; Patel et al, 2005; Ali et al, 2005; Ebele, 2011; Taskeen-un-Nisa et al, 2011; Abata et al, 2016; Wennekar et al, 2017)
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