Chemical elicitors are agrochemicals which do not have a direct impact on pathogens and lack antimicrobial activity themselves but trigger inducible defense mechanisms, which clearly distinguish them from conventional pesticides. Saccharides are capable of triggering defense responses in plants, enhancing resistance toward infection, and even supporting plant growth. In this study, a novel series of salicyl glycoconjugates containing hydrazide and hydrazone moieties were designed and synthesized. The antifungal tests indicated that the title compounds had no in vitro fungicidal activity but showed significant in vivo antifungal activity against the tested fungal pathogens. Some compounds even had superior activity than the commercial fungicides in greenhouse. The results of RT-PCR analysis showed that the designed salicyl glycoconjugates could induce the expression of LOX1 and Cs-AOS2, which are the specific marker genes of jasmonate signaling pathway, to trigger the plant defense resistance.

Molecular design and synthesis of sugar-based plant activators

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.