Impact of the Light Signal on Photoreceptors and ABA Signaling Related to Anthocyanin Synthesis in Grape Berries
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Kondo, S.; Ohta, M.; Saito, T.; Khewkhom, N.; Srilaong, V.; Aiamla-Or, S.; Kowitcharoen, L.; Kongsuwan, A.; Setha, S.
ผู้เผยแพร่: Wiley
ปีที่เผยแพร่ (ค.ศ.): 2025
วารสาร: Journal of the Science of Food and Agriculture (0022-5142)
Volume number: 2025
Issue number: 1
หน้าแรก: 6682599
นอก: 0022-5142
eISSN: 1097-0010
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
Background and Aims: Color, a key determinant of grape berry quality, is influenced by light, temperature, and plant hormones during development. We investigated the effects of red-, blue-, and combined red-and-blue-light irradiations on photoreceptors, abscisic acid (ABA) signaling, and anthocyanin biosynthesis in order to clarify their mutual relationships. Methods and Results: The experiment was conducted over two consecutive years (2023–2024) using the same nine “Kyoho” grapevines, which were eight years old at the start of the study. In 2023, treatments consisted of irradiating grape clusters with either red-light-emitting diodes (LEDs) or blue LEDs. In 2024, the treatments were modified to irradiation with blue LEDs or a combination of red and blue LEDs. Compared to an untreated control group, the irradiation of grape clusters with red or blue LEDs at 240 μmol m−2s−1 both significantly increased the expressions of the photoreceptor genes VvPHYa (phytochromes), VvPHYb, VvCRYa (cryptochromes), and VvPHOT2 (phototropins), those of genes VvSnRK2.6 (an SNF 1-related protein kinase) and VvABF2 (an ABA-responsive element-binding transcription factor) involved in the activation of ABA signaling, and those of genes VvMYBa1 and VvUFGT involved in anthocyanin synthesis, as well as anthocyanin synthesis. The expression of VvPP2C9 (protein phosphatase 2C9), which is negatively related to ABA signaling, was decreased. There were no significant differences in these factors between the red- and blue-irradiated sections. The combined treatment with red and blue light, as well as blue-light exposure alone, upregulated photoreceptor genes’ expression, ABA signaling, anthocyanin synthesis enzyme genes’ expression, and anthocyanin synthesis compared to the untreated control, whereas no difference was observed between the combined treatment and the blue-light treatment. Conclusions: These results suggest that both red- and blue-light exposure stimulate ABA signaling in grape skins and that the activation of either the red- or blue-light receptors promotes anthocyanin synthesis. © © 2025 Satoru Kondo et al. Australian Journal of Grape and Wine Research published by John Wiley & Sons Ltd.
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