Endogenous abscisic acid, anthocyanin and sugar syntheses in delayed-start cultured grapes under double cropping cultivation system irradiated by blue and red-LED at night

A. Rodyoung, Y. Masuda, K. Okawa, H. Ohara, S. Kondo
The effects of blue- and red-light irradiation at night on abscisic acid (ABA) synthesis, anthocyanin and sugar concentrations were examined in delayed-start cultured grapes under a double-cropping cultivation system. ABA and anthocyanin concentrations increased in skin treated with blue and red light-emitting diodes (LED) and the expressions of VlMYBA1-2 and VlMYBA2 at veraison were higher in blue- and red-LED- treated skin. Therefore, the expressions of VlMYBA1-2 and VlMYBA2 at veraison may significantly influence the anthocyanin productions. An increase in sugars was also observed in blue- and red-LED-treated skin. The results suggest that the blue and red LED irradiation at night may be effective at increasing anthocyanin and sugar concentrations in delayed-start cultured grapes under a double-cropping cultivation system. The results also suggest interactions among ABA, anthocyanin and sugar syntheses.
Rodyoung, A., Masuda, Y., Okawa, K., Ohara, H. and Kondo, S. (2016). Endogenous abscisic acid, anthocyanin and sugar syntheses in delayed-start cultured grapes under double cropping cultivation system irradiated by blue and red-LED at night. Acta Hortic. 1115, 161-166
DOI: 10.17660/ActaHortic.2016.1115.24
https://doi.org/10.17660/ActaHortic.2016.1115.24
abscisic acid, anthocyanin, light-emitting diode, grapes
English

Acta Horticulturae