Effects of UV-B Radiation on the Growth, Physiological and Biochemical Characteristics of Chondrus ocellatus Holm (Rhodophyta)

Abstract:

Effects of enhanced ultraviolet B (UV-B, 280-320 nm) on macroalgae have gained particular attention in recent years. We investigated the changes in the growth, physiological and biochemical characteristics of C. ocellatus under UV-B radiation in this study. The results showed that UV-B could inhibit the growth of C. ocellatus (p<0.01) and the growth inhibition was more significant with increased doses of UV-B radiation. The effects of UV-B radiation on Chl-a content in C. ocellatus were not obvious. The soluble proteins content and MDA content in C. ocellatus were increased by UV-B radiation, and the increase of MDA content was extraordinary significant. The SOD activity and CAT activity were increased when the intensity of UV-B radiation was 7.2 J/m², while the SOD activity and CAT activity were decreased when the intensity of UV-B radiation was 21.6 J/m².

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 222-226
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.222
• Online since: June 2014
• Authors: Heng Jiang Cai*, Zhi Hua Zhang, Chang Fa Liu, Hai Feng Wei, Jun Xin Zhang
• Keywords: Chondrus ocellatus Holm, Growth, Physiological and Biochemical Characteristics, UV-B Radiation

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