E E Lazar1, R B H Wills, B T Ho, A M Harris, L J Spohr. 1. Gosford Horticultural Institute, NSW Department of Primary Industries, Gosford, NSW, Australia. elena.lazar@dpi.nsw.gov.au
Abstract
AIM: To evaluate the antifungal activity of nitric oxide (NO) against the growth of the postharvest horticulture pathogens Aspergillus niger, Monilinia fructicola and Penicillium italicum under in vitro conditions. METHODS AND RESULTS: Different volumes of NO gas were injected into the Petri dish headspace to obtain the desired concentrations of 50-500 microl l(-1). The growth of the fungi was measured for 8 days of incubation in air at 25 degrees C. All concentrations of NO were found to produce an antifungal effect on spore germination, sporulation and mycelial growth of the three fungi, with the most effective concentration for A. niger and P. italicum being 100 and 500 microl l(-1) for M. fructicola. CONCLUSIONS: Short-term exposure to a low concentration of NO gas was able to inhibit the subsequent growth of A. niger, M. fructicola and P. italicum. SIGNIFICANCE AND IMPACT OF THE STUDY: NO gas has potential use as a natural fungicide to inhibit microbial growth on postharvest fruit and vegetables.
AIM: To evaluate the antifungal activity of nitric oxide (NO) against the growth of the postharvest horticulture pathogens Aspergillus niger, Monilinia fructicola and Penicillium italicum under in vitro conditions. METHODS AND RESULTS: Different volumes of NO gas were injected into the Petri dish headspace to obtain the desired concentrations of 50-500 microl l(-1). The growth of the fungi was measured for 8 days of incubation in air at 25 degrees C. All concentrations of NO were found to produce an antifungal effect on spore germination, sporulation and mycelial growth of the three fungi, with the most effective concentration for A. niger and P. italicum being 100 and 500 microl l(-1) for M. fructicola. CONCLUSIONS: Short-term exposure to a low concentration of NO gas was able to inhibit the subsequent growth of A. niger, M. fructicola and P. italicum. SIGNIFICANCE AND IMPACT OF THE STUDY: NO gas has potential use as a natural fungicide to inhibit microbial growth on postharvest fruit and vegetables.
Authors: Pedro J Martínez-García; Dan E Parfitt; Richard M Bostock; Jonathan Fresnedo-Ramírez; Alejandra Vazquez-Lobo; Ebenezer A Ogundiwin; Thomas M Gradziel; Carlos H Crisosto Journal: PLoS One Date: 2013-11-11 Impact factor: 3.240
Authors: Jeum Kyu Hong; Su Ran Kang; Yeon Hwa Kim; Dong June Yoon; Do Hoon Kim; Hyeon Ji Kim; Chang Hyun Sung; Han Sol Kang; Chang Won Choi; Seong Hwan Kim; Young Shik Kim Journal: Plant Pathol J Date: 2013-12 Impact factor: 1.795