Abstract

Some rhizospheric fungi of Solanum lycopersicum were isolated from Cairo governorate and identified in Taxonomy Department, Ain-Shams University, Cairo City, Egypt. These isolated fungi were cultivated on soil extract medium enriched with 2% (w/v) glucose and 5% (w/v) yeast extract. The cytological effects of the metabolites of these fungi on the seeds of S. lycopersicum were examined after three different intervals (6, 12 and 24 h). These cytological effects include three parameters; chromosomal aberrations, nucleic acids content, protein banding patterns. Moreover, ochratoxin A was determined in the fungal filtrate of the most effective isolate using HPLC technique.

Key words: Rhizospere, fungi, Solanum lycopersicum, mitotic index, chromosomal aberrations, nucleic acids, protein patterns.