Exploring the potential of Catharanthus roseus, Ricinus communis, Carrica papaya and Annona squammosa used as biopesticides
Ginni Kumawat1, Nidhi Gaur1, Romila Karnawat2, I. K. Sharma3, P. S. Verma3
1- Department of Chemistry, Vedic Kanya P.G. Mahavidhyalaya, Jaipur
2- Department of Chemistry,Govt. P.G. College, Sawai Madhopur
3- Department of Chemistry, University of Rajasthan, Jaipur, India
Pathogenic fungi are the main infectious agents in plants, causing alterations during developmental stages including post-harvest. Plants have been explored extensively all over the globe in quest of a novel bioactive compound that could a good therapeutic candidate treating infectious diseases especially against drug resistant microbes. Plants are a rich source of novel natural substances that can be used to develop environmental safe method for fungus control. In the present study the efficacy of organic extracts of Catharanthus roseus, Ricinus communis, Carrica papaya and Annona squammosa leaves against the pathogenic fungus i.e Aspergillus niger,Thrichoderma reesei,Penicillium fumiculosum were studied in vitro by agar well diffusion assay. Nearly all the extracts were found effective against these fungi. The positive results so obtained were compared with that of the reference standard fungicide (Matco 8-64 and Ketoconazole). It was found that most of the extracts were found more effective against fungi than the control fungicide. Among those plant species Catharanthus roseus showed significant antifungal activity with maximum zone of inhibition and active against two plant pathogenic fungal species. On the other hand, the A.niger strain were mostly resistance to various solvents of above used plant extract .These plant extracts can be utilized for managing field population of fungal pathogens.
Keywords: Mycotoxins, Activity index, Matco 8-64 and Ketoconazole.
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