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High-CO₂ Treatment Prolongs the Postharvest Shelf Life of Strawberry Fruits by Reducing Decay and Cell Wall Degradation.

ABSTRACT: Improved methods are needed to extend the shelf life of strawberry fruits. The objective of this study was to determine the postharvest physiological mechanism of high-CO₂ treatment in strawberries. Harvested strawberries were stored at 10 °C after 3 h of exposure to a treatment with 30% CO₂ or air. Pectin and gene expression levels related to cell wall degradation were measured to assess the high-CO₂ effects on the cell wall and lipid metabolism. Strawberries subjected to high-CO₂ treatment presented higher pectin content and firmness and lower decay than those of control fruits. Genes encoding cell wall-degrading enzymes (pectin methylesterase, polygalacturonase, and pectate lyase) were downregulated after high-CO₂ treatment. High-CO₂ induced the expression of oligogalacturonides, thereby conferring defense against Botrytis cinerea in strawberry fruits, and lowering the decay incidence at seven days after its inoculation. Our findings suggest that high-CO₂ treatment can maintain strawberry quality by reducing decay and cell wall degradation.

SUBMITTER: Eum HL

PROVIDER: S-EPMC8304637 | biostudies-literature |

REPOSITORIES: biostudies-literature

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