Antimicrobial Activity of Solanum torvum Swart. Against Important Seed Borne Pathogens of Paddy

Iranica Journal of Energy and Environment (IJEE) 01/2010;
Source: DOAJ


Aqueous and Solvent extracts of leaves of S. torvum viz., Petroleum ether, Benzene, Chloroform, Methanol and Ethanol were tested in vitro for antimicrobial activity following the procedures of poisoned food technique and cup diffusion method against some important seed borne pathogens of paddy viz, Pyricularia oryzae, Alternaria alternata, Bipolaris oryzae, Tricoconis padwickii, Dreschlera tetramera, D. halodes, Curvularia lunata, F. oxysporum, F. moniliformae, F. solani and Xanthomonas oryzae. Aqueous extracts of leaves (at 25% concentration) showed 100, 47.44, 60.47, 71.50, 56.11, 63.33, 78.62, 66.66, 47.44 and 46.27% inhibition of the test pathogens respectively. Highly significant antifungal activity was observed in Methanolic and ethanolic extract. The percentage inhibition of the test pathogenic fungi in Methanolic extract was 100% (P.oryzae), 74.42 (A. alternata), 65.68 (B oryzae), 87.62 (C .lunata), 100% (T. padwickii), 63.33 (D.halodes), 60.31 D. (tetramera), 76.01 (F.moniliformae), 59.21 (F. oxysporum), 43.91% (F.solani) and zone of inhibition of Xanthomonas campestris pv oryzae was 18 and 30mm in Methanol and ethanol extract.

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Available from: Raveesha Koteshwar Anandarao, Dec 05, 2014
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    • "Balachandran et al. (2012) reported the antimicrobial and antimycobacterial activities of methyl caffeate isolated from S. torvum fruit. Although the antimicrobial activity of crude extracts of S. torvum leaves has been reported earlier (Bari et al. 2010; Lalitha et al. 2010), there are no reports on active compound responsible for antifungal activity of S. torvum leaves. In this context, an attempt has been made to identify the active compound responsible for antifungal activity as well as its effect on mycotoxin biosynthesis by A. flavus and F. verticillioides. "
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    • "Medicinal and aromatic plants, a gift of nature, are being used against various infections and diseases in the world since past history. Only a small percentage of plants species have been investigated phytochemically and the fraction submitted to biological screening is even smaller [3] . Plant kingdom represents an extraordinary reservoir of novel molecules. "
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