What question did this study set out to answer?

To evaluate the antimicrobial effects of hydrogen peroxide and sodium nitroprusside against strawberry pathogens at different temperatures.

April 3, 2026Research in Plant Disease0 citationsOpen Access

Temperature-Dependent Antimicrobial Activity of Hydrogen Peroxide-Nitric Oxide Mixture on Strawberry Pathogens

JHJeum Kyu Hong YKYe Won KwonGangneung–Wonju National University SJSeo Young Jeong

Puntos clave

To evaluate the antimicrobial effects of hydrogen peroxide and sodium nitroprusside against strawberry pathogens at different temperatures.
Measured colony diameters on half-strength potato dextrose agar.
Tested varying concentrations of hydrogen peroxide and sodium nitroprusside.
Conducted experiments at temperatures of 20°C, 25°C, and 30°C.
Mycelial growth of Colletotrichum fructicola and Phytophthora cactorum decreased with hydrogen peroxide and SNP.
Synergistic antimicrobial activity observed when both compounds were combined.
Hydrogen peroxide completely arrested growth of Neopestalotiopsis clavispora at all temperatures, while SNP only affected growth at 30°C.

Resumen

Hydrogen peroxide (H2O2) and sodium nitroprusside (SNP) have shown different in vitro antimicrobial activities against strawberry pathogens Colletotrichum fructicola, Phytophthora cactorum and Neopestalotiopsis clavispora. The antimicrobial activities were evaluated by measuring colony diameters on half-strength potato dextrose agar supplemented with different H2O2 and/or SNP concentrations at 20°C, 25°C, and 30°C. Mycelial growth of C. fructicola and P. cactorum decreased in the presence of H2O2 and SNP individually across all three temperatures, and the two compounds showed synergistic antimicrobial activities. N. clavispora growth was arrested by H2O2 at three temperatures, but the SNP-limited growth was only found at 30°C. Synergistic antifungal activity of H2O2 and SNP against N. clavispora was found at 30°C, but not at 20°C and 25°C. These results suggest that the antimicrobial efficacies of H2O2 and SNP against these strawberry pathogens are temperature-dependent and can be significantly enhanced by combining the two compounds.

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