The impact of spectral composition and light periodicity on the activity of two antioxidant enzymes (SOD and CAT) in the coral Favia favus

Levy, O., Achituv, Y., Yacobi, Y. Z., Stambler, N. and Dubinsky, Z. (2006) The impact of spectral composition and light periodicity on the activity of two antioxidant enzymes (SOD and CAT) in the coral Favia favus. Journal of Experimental Marine Biology And Ecology, 328 1: 35-46. doi:10.1016/j.jembe.2005.06.018


Author Levy, O.
Achituv, Y.
Yacobi, Y. Z.
Stambler, N.
Dubinsky, Z.
Title The impact of spectral composition and light periodicity on the activity of two antioxidant enzymes (SOD and CAT) in the coral Favia favus
Journal name Journal of Experimental Marine Biology And Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2006-01-10
Sub-type Article (original research)
DOI 10.1016/j.jembe.2005.06.018
Volume 328
Issue 1
Start page 35
End page 46
Total pages 12
Editor P. M .J. Herman
Sandra E. Shumway
R. Hughes
Place of publication Amsterdam, The Netherlands
Publisher Elsevier Science Bv
Collection year 2006
Language eng
Subject C1
270599 Zoology not elsewhere classified
770300 Marine Environment
Abstract In oligotrophic waters the light spectrum is mostly blue, and therefore the physiological and biochemical responses to blue light occurring in the coral tissue and in the symbiotic algae are important. Examination of the wavelength dependence of two free radical scavenger enzyme activity revealed an increase in activity in the blue light range (440-480 nm) compared to the red (640680 nm) in the full visible light (400-700 nm) range. These data show for the first time the relationship between the action spectra of photosynthesis and the activity of two main antioxidant enzymes in the symbiotic coral Favia favus. It was found that in the animal (host) the enzyme response to the spectral distribution of light was higher than that of the zooxanthellae, probably due to accumulation of free radicals within the host tissue. Furthermore, we found that the activity of these enzymes is affected in nature by the length of the day and night, and in the laboratory, by the duration of the illumination. Changes in the pigment concentrations were also observed in response to growth under the blue region and the whole PAR spectrum, while fluorescence measurements with the fast repetition rate fluorometer (FRRF) showed a decrease in the sigma cross section and a decrease in the quantum yield also in the blue part of the spectrum. These changes of scavenger enzymes activity, pigment concentration and fluorescence yield at different light spectra are vital in acclimatization and survival of corals in shallow water environments with high light radiation. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Antioxidant Enzyme
Catalase
Coral
Light Spectrum
Superoxide Dismutase
Ecology
Marine & Freshwater Biology
Superoxide-dismutase Activity
Repetition Rate Fluorometer
Ultraviolet-radiation
Oxidative Stress
Degradation Products
Marine-phytoplankton
Shade Adaptation
Oxygen-toxicity
Blue-light
In-situ
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2007 Higher Education Research Data Collection
Centre for Marine Studies Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 43 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 19:21:15 EST