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Storage of halved strawberry fruits affects aroma, phytochemical content and gene expression

Dhorajiwala, R., Roberts, C., Dimitrova, S., Baldwin, A., Davoli, D., Ludlow, R., Tu, S., Jones, S., Spadafora, N., Müller, C. and Rogers, H. 2021. Storage of halved strawberry fruits affects aroma, phytochemical content and gene expression. Presented at: 9th International Strawberry Symposium (ISS2021), Rimini, Italy, 01 - 05 May 2021. IX International Strawberry Symposium. International Society for Horticultural Science (ISHS), 10.17660/ActaHortic.2021.1309.127

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Strawberries are valued for their aroma and phytochemical content. However, they have a short shelf life and storage at low temperatures to prolong shelf life affects physiological and biochemical processes in the fruit. This impacts on their use in fresh cut ready-to-eat fruit salads. To assess changes in aroma and how these are related to phytochemical content and gene expression, Fragaria × ananassa 'Elsanta' strawberries were halved and stored at either 4 or 8°C for a period of 12 days. Phytochemical content was relatively unaffected whereas volatile organic compound profiles were distinct at different time points of storage. Gene expression changed significantly with storage over a 5-day period: a total of 1135 gene targets changed in expression (p<0.05; log2 fold change>1.5) with most changes between days 0 and 5 of storage. These included genes related to stress responses, and secondary metabolism. Real time PCR was used to verify expression profiles of two genes related to VOC classes represented in the aroma, showing changes in pattern of expression during storage.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Biosciences
Publisher: International Society for Horticultural Science (ISHS)
ISBN: 9789462613041
ISSN: 0567-7572
Date of First Compliant Deposit: 4 August 2021
Date of Acceptance: 30 November 2020
Last Modified: 17 Aug 2021 09:25

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