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THE EFFECTS OF UV-A, UV-B AND UV-C ON PROTEIN AND ASCORBATE CONTENT, LIPID PEROXIDATION AND BIOSYNTHESIS OF SCREENING COMPOUNDS IN BRASSICA NAPUS | ||
| Iranian Journal of Science | ||
| مقاله 5، دوره 29، شماره 1، اردیبهشت 2005، صفحه 39-48 اصل مقاله (175.27 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2005.2782 | ||
| نویسندگان | ||
| F. NASIBI؛ KH. M-KALANTARI* | ||
| Biology Department, Shahid Bahonar University of Kerman, Kerman, I. R. of Iran | ||
| چکیده | ||
| The role of the antioxidant defense system was studied in Brassica napus, and subjected to different supplementary bands of ultraviolet radiation (UV-A, UV-B and UV-C). This study showed that UV-B and UV-C induced oxidative stress as evidenced by an increase in lipid peroxidation and total ascorbate content. Under UV-B and UV-C treatments, flavonoids and anthocyanins were increased significantly compared with control and UV-A treated plants. These compounds act as internal filters and also have an antioxidant activity against active oxygen species such as H2O2. Results of this research showed that the protein content increased under UV-B and UV-C. These increments are probably related to the synthesis of defense proteins such as HSP, the expression of genes that are encoding the antioxidant enzymes, or those which contribute in UV-absorbing compound synthesis pathways such as PAL, CHS and CHI. | ||
| کلیدواژهها | ||
| UV radiation؛ ascorbic acid؛ lipid peroxidation؛ Oxidative stress؛ flavonoids؛ anthocyanins؛ Brassica napus | ||
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