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Biology: Mycotoxic Properties of the Extracts of Some Medicinal Plants on Plant Pathogenic Fungi

 

Mycotoxic Properties of the Extracts of Some Medicinal Plants on Plant Pathogenic Fungi

A.R.T. Sarhan

Department of Biology, College of Science. University of Al-Qadisiya

Diwanya, Iraq.

Abstract

This research was aimed to study the inhibitory effects of the aqueous extracts of ten medicinal plants against the growth of six plant pathogenic fungi in the laboratory: Aspergillus flavusm Alternaria alternata, Curvlaria lunata. Fusarium oxysporum, F.solani, and Rhizopus stolonifer. Results showed that extract of Trigonella foenum grciceum, Allium sativum and Mentha longifolia exhibted strong mycotoxic action against all fungi.and the toxicity decreased with the increased concentration of the plant extra A. flavus and A. alternata were more sensitive to the extracts. Plants extracts reduced the radial growth of the fungi on Potato \dextrose Agar (PDA) medium And reduced the dry weight of the fungal mycelium grown on liquid medium. Potato Dextrose Broth (PDB) mixed with plant extracts. The toxicity effect of the plant extracts on the spore formation and spore germination was also studied. It was found that plant extracts reduced the spore formation, its germination and the length of germ tubes.




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