Abstract
We have measured the susceptibility of carrots to the storage pathogen Sclerotinia sclerotiorum after roots were treated postharvest with a 0.2% (w/v) chitosan hydrolysate (number average degree of polymerisation = 7) prepared using Streptomyces N-174 chitosanase. Whereas the hydrolysate did not affect radial growth of S. sclerotiorum colonies on potato dextrose agar plates, it reduced the frequency and size of rot compared to untreated controls when applied to carrots 3 days before inoculation with S. sclerotiorum. When carrots were treated at time zero with either chitosan hydrolysate or high molecular weight chitosan then inoculated at intervals over the next 5 days, there was a decline in Sclerotinia infection, with the hydrolysate showing a greater effect than the high molecular weight chitosan. Our results suggest that the chitosan treatments induced host resistance to the pathogens.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
