Inhibitors of abscisic acid synthesis or signaling affect anthocyanin synthesis and photoreceptors in grape berries

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Authors/Editors

Strategic Research Themes

Publication Details

Author list: Kondo S.; Kunugi K.; Saito T.; Ohkawa K.; Takeuchi J.; Todoroki Y.; Khewkhom N.; Srilaong V.; Phlaetita W.; Setha S.

Publisher: Elsevier

Publication year: 2024

Journal: Scientia Horticulturae (0304-4238)

Volume number: 338

ISSN: 0304-4238

eISSN: 1879-1018

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85203621867&doi=10.1016%2fj.scienta.2024.113623&partnerID=40&md5=af777b97e7d6351458704b4a06ebf5d6

Languages: English-Great Britain (EN-GB)

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Abstract

Effects of endogenous abscisic acid (ABA) and ABA signal transduction on anthocyanin and photoreceptors in grape berries (Vitis labruscana) were examined using NDGA, the inhibitor of the rate-limiting ABA biosynthesis enzyme in grapes, and PANMe, an ABA receptor interaction antagonist. Both NDGA and PANMe treatments decreased anthocyanin concentrations. The expressions of VvSnRK2.6, VvABF2, and VvPP2C9 in NDGA treatment were not significantly different from the untreated control; by contrast, PANMe treatment decreased the expressions of VvSnRK2.6, VvABF2, and VvPP2C9. Both NDGA and PANMe treatments decreased the expressions of VvPhot2 and VvCRYa. These results suggest that both endogenous ABA concentrations and ABA signaling affect anthocyanin synthesis and photoreceptor genes such as VvPhot2 and VvCRYa in grape skins. © 2024 Elsevier B.V.

Keywords

ABA signal transduction, VvABF2, VvCRYa, VvPhot2, VvPP2C9, VvSNRK2.6