Hydrogen peroxide treatment promotes early ripening of Kyoho grape

Abstract

Background and Aims Reactive oxygen species are involved in fruit ripening. Here, we investigated the role of hydrogen peroxide (H2O2) in promoting grape (Vitis vinifera L.) berry ripening. Methods and Results Solutions of 100, 300 and 500 mmol/L H2O2 were sprayed on Kyoho bunches 25 days post anthesis (dpa). All treatments promoted early ripening of berries, although the 300 mmol/L treatment was the most effective; at this concentration, Kyoho berries ripened 20 days earlier than the Control. Ripening‐related physiological indexes, such as berry diameter and firmness, anthocyanin, sucrose and malonaldehyde concentration, and catalase, cellulase and polygalacturonase activity, were similar for the H2O2‐treated and Control berries. The TSS concentration of berries treated with 300 mmol/L H2O2 was significantly higher than that of Control berries throughout the experiment. Superoxide dismutase activity in H2O2‐treated berries was significantly higher than that in Control berries at 35 and 70 dpa. All H2O2 treatments enhanced the ascorbic acid concentration of berries. Conclusions Exogenously applied H2O2 promotes the early ripening of Kyoho berries. Significance of the Study This study provides a simple, efficient, safe, economical and environmentally friendly medium to promote early ripening of grape berries.

Deciphering the Metabolic Pathways of Pitaya Peel after Postharvest Red Light Irradiation

“…After red light irradiation, the increasing trend of cell wall degradation products was significantly delayed (Figures 4 and 8), indicating that red light irradiation could delay the cell wall degradation of pitaya peel by reducing the content of H 2 O 2 . Similar results of H 2 O 2 treatment promoting the degradation of fruit cell walls have also been reported in Kyoho grape [32], and the degradation of the fruit cell wall could be significantly delayed by reducing the content of H 2 O 2 in pitaya fruit [5,6].…”

Genome-wide identification of small heat shock protein (HSP20) gene family in grape and expression profile during berry development

“…As we know, ABA plays an important role in grape [23,24]. In the previous study [1], H 2 O 2 treatment promotes the early fruit ripening of 'Kyoho'. To further explore the role of ABA in this process, the expression analysis of ABA-related genes were performed by RNA-Seq data and qRT-PCR.…”

“…grape and make it ripen 20 days earlier than the control [1,2]. Other studies in tomato [3] and pear [4] have also demonstrated that H 2 O 2 was associated with the fruit development.…”

Genome-wide identification of small heat shock protein (HSP20) gene family in grape and expression profile during berry development

“…It is well known that ABA plays an important role in grape [23,24]. In the previous study [1], H 2 O 2 treatment was shown to promote the early fruit ripening of 'Kyoho'. To further explore the role of ABA in this process, RNA-Seq and qRT-PCR were performed to examine the expression analysis of ABA-…”

“…'Kyoho' grape, causing it to ripen 20 days earlier than the control [1,2]. Other studies in tomato [3] and pear [4] have also demonstrated that H 2 O 2 is associated with fruit development.…”