Abscisic acid mediates wound-healing in harvested tomato fruit

作者：Tao, Xiaoya; Mao, Linchun^*; Li, Jiayin; Chen, Jingxin; Lu, Wenjing; Huang, Si

来源：Postharvest Biology and Technology, 2016, 118: 128-133.

DOI：10.1016/j.postharvbio.2016.04.002

• Abscisic acid
• Tomato
• Wound-healing
• Suberin

The development of wound periderm is vital to prevent water vapor loss and pathogen invasion in wounded fruit. The effect of abscisic acid (ABA) on wound-healing in harvested tomato fruit was evaluated in this study. Wounded tomato fruit were treated with ABA or fluridone (FLD, an inhibitor of ABA biosynthesis), respectively, and allowed to wound-heal at 20 degrees C in darkness for 4 days. Weight loss of tomato fruit reflected the intuitionistic effects of different treatments during wound-healing. Autofluorescence and histochemical staining demonstrated the development of suberized wound periderm in harvested tomato fruit at 3-4 day after wounding. Alkanoic acids, n-alkanes, unsaturated fatty acids and pentacosane represented the major components in the suberin. ABA-treated fruit showed enhanced autofluorescence, histochemical intensity and suberin deposition along with increased activities of phenylalanine ammonia-lyase (PAL) and peroxidase (POD). FLD treatment, however, alleviated the features of suberization and enzyme activities during wound-healing. The results suggest that ABA is involved in the stimulation of wound-induced suberization in harvested tomato fruit.

• 出版日期2016-8
• 单位浙江大学