Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/10/2009
Publication Date: 6/21/2009
Citation: Rudell Jr, D.R., Mattheis, J.P., Hertog, M. 2009. Ethylene insensitivity alters ripening-associated metabolomic changes in apple peel. Meeting Abstract. N/A.
Technical Abstract: Metabolomic changes were compared in untreated, diphenylamine treated, and 1-methylcyclopropene treated ‘Granny Smith’ apples stored for up to 6 months at 1 oC in air. Metabolomic evaluation, including 600+ metabolites, was employed to characterize ripening-related metabolism. Partial Least Square Discriminant Analysis (PLS-DA) models revealed metabolomic differentiation based on treatment and storage duration. The 1-MCP treated fruit peel metabolome differentiated from the other treatments within the initial 2 weeks of storage and continued to do so until 6 months. The trajectory of metabolomic development in 1-MCP treated peel illustrated by the statistical model was different than both those of the untreated and DPA treated peel, which were both similar with respect to ripening-associated components of the model. Specific metabolites linked with increasing storage duration in 1-MCP treated peel included, but were not limited to, organic and amino acids. These finding demonstrate ethylene insensitivity does not halt but, instead, alters ripening during apple storage