Changes in Antioxidant System and Active Oxygen Species in Flesh of CaraCara ( Citrus sinenisis) during Development

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (6): 1287-1290.

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Changes in Antioxidant System and Active Oxygen Species in Flesh of CaraCara ( Citrus sinenisis) during Development

Huang Renhua;Xia Renxue;Lu Yunmei;Hu Liming

( Key Laboratory of Horticulture Plant Biology Ministry of Education, Huazhong Agricultural University, W uhan, Hubei 430070,China)

Received:2006-01-04 Revised:2006-05-12 Online:2006-12-25 Published:2006-12-25

Abstract

Abstract: Cara Cara 〔Citrus sinenisis (L. ) Osbeck ‘Cara Cara’〕was used to study the contents of glutathione (GSH) , ascorbate (AsA) , active oxygen species (AOS) and changes in the activities of correlative enzymes during development. The results showed that the contents of AsA accumulated with increase in
the activity of dehydroascorbate reductase (DHAR) during the fruit development and the correlation coefficient was 0.870, P < 0.05. The activity of DHAR showed opposite trend with ascorbate peroxidase (AsA-POD).
The changes in glutathione reductase (GR) activities and GSH were similar to display a single-peak pattern and their correlation coefficient was 0.978 ( P < 0.01). The ratios of AsA /DHAsA and GSH /GSSG both descended, while the contents of AOS increased throughout fruit development.

Key words: Citrus sinenisis, Glutathione, Ascorbate, Enzyme activity, Active oxygen species

CLC Number:

S666.4

Huang Renhua;Xia Renxue;Lu Yunmei;Hu Liming. Changes in Antioxidant System and Active Oxygen Species in Flesh of CaraCara ( Citrus sinenisis) during Development[J]. ACTA HORTICULTURAE SINICA, 2006, 33(6): 1287-1290.

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Changes in Antioxidant System and Active Oxygen Species in Flesh of CaraCara ( Citrus sinenisis) during Development

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