Effect of H2O2 on the in vitro growth of Mycosphaerella fijiensis Cuban isolate
Journal Title: Biotecnología Vegetal - Year 2014, Vol 14, Issue 2
Abstract
Black leaf streak disease (Mycosphaerella fijiensis Morelet) is the main foliar disease of bananas and plantain. One of the possible mechanisms of resistance is the hypersensitive response observed in ‘Calcutta 4’ (Musa AA) that involves the formation of reactive oxygen species. In order to determine the effect of H 2 O 2 on the in vitro growth of M. fijiensis Cuban isolate CCIBP-Pf-83, several concentrations added to a culture medium PDB were tested. After seven days of incubation the mycelial dry weight was determined. It was found that with 30 mmol l -1 H 2 O 2 in the culture medium, mycelial growth was stimulated and with 50 up to 100 mmol l -1 it decreased. The results provide elements for understanding plant- pathogen interactions in this pathosystem.
Authors and Affiliations
María I. Oloriz, Bárbara Ocaña
Keywords
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