期刊
POSTHARVEST BIOLOGY AND TECHNOLOGY
卷 118, 期 -, 页码 128-133出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.postharvbio.2016.04.002
关键词
Abscisic acid; Tomato; Wound-healing; Suberin
资金
- National Natural Science Foundation of China [31372113]
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. (C) 2016 Elsevier B.V. All rights reserved.
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