Metabolomic Change Precedes Apple Superficial Scald Symptoms

Untargeted metabolic profiling was employed to characterize metabolomic changes associated with ‘Granny Smith’ apple superficial scald development following 1-MCP or DPA treatment. Partial least-squares discriminant analyses were used to link metabolites with scald, postharvest treatments, and stora...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2009-09, Vol.57 (18), p.8459-8466
Main Authors: Rudell, David R, Mattheis, James P, Hertog, Maarten L.A.T.M
Format: Article
Language:English
Subjects:
1-methylcyclopropene
Antioxidants
apples
Biological and medical sciences
Chemical Changes Induced by Processing/Storage
chilling injury
Cold Temperature - adverse effects
Cyclopropanes - administration & dosage
diphenylamine
Diphenylamine - administration & dosage
Food industries
Food Preservation - methods
food processing
food processing quality
food storage
Fruit - chemistry
Fruit - metabolism
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
Malus
Metabolomics
Oxidative Stress
plant physiology
postharvest diseases
scald diseases
storage quality
Time Factors
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Summary:Untargeted metabolic profiling was employed to characterize metabolomic changes associated with ‘Granny Smith’ apple superficial scald development following 1-MCP or DPA treatment. Partial least-squares discriminant analyses were used to link metabolites with scald, postharvest treatments, and storage duration. Models revealed metabolomic differentiation between untreated controls and fruit treated with DPA or 1-MCP within 1 week following storage initiation. Metabolic divergence between controls and DPA-treated fruit after 4 weeks of storage preceded scald symptom development by 2 months. α-Farnesene oxidation products with known associations to scald, including conjugated trienols, 6-methyl-5-hepten-2-one, and 6-methyl-5-hepten-2-ol, were associated with presymptomatic as well as scalded control fruit. Likewise, a large group of putative triterpenoids with mass spectral features similar to those of ursolic acid and β-sitosterol were associated with control fruit and scald. Results demonstrate that extensive metabolomic changes associated with scald precede actual symptom development.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf901571g