Effect of abscisic acid on wound-healing process in postharvest tomato fruit
The effect of abscisic acid (ABA) on wound-healing capability and related enzyme activities were investigated in postharvest cherry tomato fruits treated by ABA and fluridone (FLD, an inhibitor of ABA).After wounding at equator with a sterilized scalpel, fruits were immersed in 1.0 mmol/L ABA,0.1 mm...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2016-05-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2015.11.242 |
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| Summary: | The effect of abscisic acid (ABA) on wound-healing capability and related enzyme activities were investigated in postharvest cherry tomato fruits treated by ABA and fluridone (FLD, an inhibitor of ABA).After wounding at equator with a sterilized scalpel, fruits were immersed in 1.0 mmol/L ABA,0.1 mmol/L FLD and deionized water (control, CK) under vacuum (0.07 MPa,5 min), respectively. Treated fruits were allowed to wound-heal at 20℃ and 90% relative humidity in dark. Fruit weight loss, autofluorescence intensity, phenylalanine ammonia-lyase (PAL) and peroxidase (POD) activities were determined in wound tissues every day.The results indicated that ABA content decreased within the first two days followed by a slight increase in the control, but maintained at high levels in ABA group and low levels in FLD group. Fruit weight loss increased gradually in all groups during storage. However, the weight loss was more and faster in FLD group, but less and wound-healing. Compared with the control, ABA group exhibited an increase in the intensity of autofluorescence especially after 3 d of storage, while FLD group depicted a reduced intensity. PAL activity increased after wounding, and reached the maximum at the third day and then decreased, while POD activity decreased after wounding and then increased in all groups during wound-healing. PAL and POD activities were enhanced by ABA application while inhibited by FLD treatment compared with the control.In conclusion, ABA promotes wound-healing process in postharvest tomato fruits. This study provides theoretical basis for the research of wound-healing mechanism in postharvest fruit and vegetable. |
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| ISSN: | 1008-9209 2097-5155 |