Involvement of oxidative stress in chilling injury in cold-stored mandarin fruits

被引:182
作者
Sala, JM [1 ]
机构
[1] CSIC, Inst Agroquim & Tecnol Alimentos, Burjassot 46100, Valencia, Spain
关键词
ascorbate peroxidase; catalase; chilling injury; citrus fruit; glutathione reductase; oxidative stress; superoxide dismutase;
D O I
10.1016/S0925-5214(98)00011-8
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The involvement of oxidative stress in chilling injury (CI) of cold-stored mandarin fruits was studied. Changes in activated oxygen scavenging enzymes, superoxide dismutase (EC 1.15.1.1.), catalase (EC 1.11.1.6), ascorbate peroxidase (EC 1.11.1.11) and glutathione reductase (EC 1.6.4.2) during low-temperature storage were examined. No symptoms of CI occurred in cold-stored fruits of 'Clemenules' and 'Clementine' cultivars. In 'Nova' and 'Fortune' cultivars, CI increased sharply after 4 weeks at 2.5 degrees C and the peel surface was severely damaged. Superoxide dismutase activity increased during cold storage in both chilling-sensitive and - tolerant cultivars. However, catalase, ascorbate peroxidase and glutathione reductase activities were higher in tolerant cultivars ('Clemenules' and 'Clementine') at low temperature. These results indicate that oxidative stress may be involved in cold-induced peel damage of harvested citrus fruit. Chilling-tolerant mandarin cultivars may have a more efficient antioxidant enzyme system. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:255 / 261
页数:7
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