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  • Title: Transition of aromatic volatile and transcriptome profiles during melon fruit ripening.
    Author: Nagashima Y, He K, Singh J, Metrani R, Crosby KM, Jifon J, Jayaprakasha GK, Patil B, Qian X, Koiwa H.
    Journal: Plant Sci; 2021 Mar; 304():110809. PubMed ID: 33568307.
    Abstract:
    Melon (Cucumis melo L.) is an important diploid crop with a wide variety of flavors due to its distinct aromatic volatile organic compounds (VOC). To understand the development of VOC profiles during fruit development, we performed metabolomic and transcriptomic analysis of two cantaloupe varieties over the course of fruit development. A total of 130 metabolites were detected in fruit samples, and 449014207 reads were mapped to the melon genome. A total of 4469 differentially expressed genes in fruits were identified and used to visualize the transition of VOC and transcriptomic profiles during the fruit development. A shift of VOC profiles in both varieties was observed from early-fruit profiles enriched in C5-C8 lipid-derived VOCs to late-fruit profiles abundant in C9 lipid-derived VOCs, apocarotenoids, and esters. The shift coincided with the expression of specific isoforms of lipid and carotenoid metabolizing enzymes as well as transcription factors involved in fruit ripening, metabolite regulation, and hormone signaling.
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