Evaluation of the potential of native Trichoderma spp. against root-rot diseases of soybean

AbstractThree native Trichoderma isolates, Trichoderma koningii (OP050066), Trichoderma harzianum (OP050067), and Trichoderma viride (OP050068) selected of fourteen different native Trichoderma spp. isolated from rhizosphere of healthy soybean fields in Al-Baha region (Baljurashi Province) Saudi Arabia, were evaluated in-Vitro and under greenhouse conditions against the soil-borne fungi Rhizoctonia solani (OQ345525), Fusarium solani (OQ345527) and Fusarium oxysporum (OQ345526) isolated from soybean plants in the same region. The three tested Trichoderma isolates significantly inhibiting the mycelial growth of the three selected pathogens R. solani, F. solani and F. oxysporum in-Vitro and reduced the percentages of pre- and post-emergence damping-off caused by the three tested pathogenic fungi with significant increase of the survived soybean plants under greenhouse conditions. Furthermore, activities of peroxidase, polyphenoloxidase and chitinase oxidative enzymes of the treated plants were increased over the untreated control. The obtained results revealed the possibility of using that native Trichoderma isolate of soybean root disease management.Keywords: Soybeanglycine maxroot rotbiological controlTrichoderma sppoxidative enzymes AcknowledgementsThe authors thank the Deanship of Scientific Research at Al-Baha University in the Kingdom of Saudi Arabia for funding this research which is emerged from the project titled “Chemical Characterization and antimicrobial activity of Rare Medicinal Plant Extracts in Al-Baha Province Biological control and Nanotechnology Applications in Resistance of Plant Diseases” in the year 1442 H under the number (13/1442).Disclosure statementNo potential conflict of interest was reported by the author(s).