Exogenous putrescine treatment delays chilling injury in okra pod (Abelmoschus esculentus) stored at low storage temperature
Polyamine, particularly putrescine (Put) has been proposed to play important role in plant to cope with cold stress. Thus, the aim of this study was to determine the effect of polyamines treatment specifically Put on alleviating the CI in okra when exposed to low storage temperature. Okra pods wer...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/38218/1/Exogenous%20putrescine%20treatment%20delays.pdf http://ir.unimas.my/id/eprint/38218/ |
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| Institution: | Universiti Malaysia Sarawak |
| Language: | English |
| Summary: | Polyamine, particularly putrescine (Put) has been proposed to play important role in plant to cope with cold
stress. Thus, the aim of this study was to determine the effect of polyamines treatment specifically Put on
alleviating the CI in okra when exposed to low storage temperature. Okra pods were dipped into Put at 0,
0.5 mM, 1mM and 2mM and stored at 4 °C. The results showed that 2mM Put effectively reduced CI symptoms
of okra. Interestingly, seed browning increased with severity of CI. Meanwhile, Put treatment significantly reduced
seed browning by retarding the activity polyphenol oxidase (PPO) and peroxidase (POD) enzymes.
Additionally, Put treatment elevated total phenolics, total antioxidant activity (DPPH radical scavenging activity
and FRAP), antioxidant enzymes (CAT and SOD) activity and contributed to low hydrogen peroxide and malondialdehyde
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