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Title:   Author  item
                                            MACNISH, ANDREW - University Of Californiaitem
                                            MORRIS, KRISTY - University Of Californiaitem
                                            DE THEIJE, ANNEMARIE - University Of Californiaitem
                                            MENSINK, MANON - Wageningen University And Research Centeritem
                                            BOERRIGTER, HENRY - Wageningen University And Research Centeritem
                                            REID, MICHAEL - University Of Californiaitem
                                            Jiang, Cai-Zhongitem
                                            WOLTERING, ERNST - Wageningen University And Research Center
  Submitted to: Postharvest Biology and Technology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 7/30/2010
                                    Publication  Date: 12/1/2010
                                    Citation: Macnish, A.J., Morris, K.L., De Theije, A., Mensink, M.G., Boerrigter, H.A., Reid, M.S., Jiang, C., Woltering, E.J. 2010. Sodium hypochlorite: A promising agent for reducing Botrytis cinerea infection on rose flowers. Postharvest Biology and Technology. 58:262-267.Interpretive Summary:
                                Technical Abstract: Botrytis cinerea is a fungal pathogen that greatly reduces the postharvest quality of rose flowers.  We determined the potential of sodium hypochlorite (NaOCl), an oxidizer with antimicrobial activity, to reduce the incidence of disease on flowers.  A postharvest dip in 200 μL L-1 NaOCl for 10 s at 20 °C provided the greatest control of B. cinerea on ‘Akito’ and ‘Gold Strike’ flowers.  NaOCl derived from Clorox® Ultra household bleach solution was more effective than laboratory grade NaOCl in reducing disease symptoms.  Lowering the pH of the NaOCl solution from pH 9.7 (unadjusted) to pH 7.0 greatly improved its efficacy.  Treating ‘Gold Strike’ flowers in this pH-adjusted NaOCl solution was more effective in reducing the level of infection on petals than postharvest dips in the conventional fungicides Medallion®, Phyton®, Switch® and Vangard®.  Applying NaOCl prior to a 3 or 10-d commercial shipment also provided the most consistent disease control for a wide range of rose cultivars as compared to conventional fungicides.  Of particular interest, the efficacy of NaOCl and Phyton® was greatest when these compounds were applied to ‘Gold Strike’ flowers after incubation at 20 °C and 90% RH for 6-9 h.  Our findings highlight sodium hypochlorite as a promising new candidate for the control of B. cinerea on rose flowers.


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