ENHANCEMENT ANTIFINGAL ACTIVITIY OF ZINC OXIDE NANOPARTICLES (ZNO-NPS) AND SESAME RESISTANCE AGAINST ROOT ROT CAUSED BY MACROPHOMINA PHASEOLINA (TASSI.) GOID., USING MIXTURE OF HYDROGEN PEROXIDE (H2O2) AND ACETIC ACID.

Document Type : Original Articles

Abstract

Six typical isolates that showed microscopic characters of
Macrophomina phaseolina were isolated from sesame root rot tissue
collected from sesame plantations’ growing in El-Minya governorate.
Pathogenicity tests revealed that isolate M3 was the most virulent in this
topical. Thus, further identifications process were applied on isolate M3
using DNA profile. Phylogenic analysis assured that M3 isolate is M.
phaseolina. An exogenous utilization of zinc oxide nanoparticles (ZnO-NPs)
and/or peroxy acetic acid (PAA) were concerned for study their efficiency to
inhibit sesame root rooting fungus M. phaseolina, sesame vegetative growth
and their potential to control sesame root rot. Either ZnO-NPsor PAA showed
antifungal activity. however, ZnO-NPs was more active against M.
phaseolina than PAA. Sesame vegetative growth showed vigor index (VI)
enhancement for single treatment of each compound tested and ZnO-NPs
was better than PAA. Combining ZnO-NPs (0.1g/l) with PAA (0.1 g/l
AA+1 g/l H2O2) was superior to increase vegetate growth. Moreover,
substation sesame root rot reduction was addressed by single application of
ZnO-NPs or PAA. Combining ZnO-NPs(0.1g/l) with PAA (0.1 g/l AA+1 g/l
H2O2) gave the greatest efficiency than single application of each compound
tested.

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