Algal symbionts increase DNA damage in coral planulae exposed to sunlight

Nesa, Badrun, Baird, Andrew H., Harii, Saki, Yakovleva, Irina, and Hidaka, Michio (2012) Algal symbionts increase DNA damage in coral planulae exposed to sunlight. Zoological Studies, 51 (1). pp. 12-17.

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Abstract

To test the hypothesis that algal symbionts make coral larvae more susceptible to high photosynthetically active radiation (PAR) and ultraviolet radiation (UVR), symbiotic and non-symbiotic planulae of Acropora tenuis were exposed to natural sunlight (high PAR and UVR) at an ambient temperature of approximately 27°C for 4 d. DNA damage to host cells was detected using a comet assay (single-cell gel electrophoresis). Coral cells from symbiotic planulae had longer comet tails than those from non-symbiotic planulae, indicating that cells in symbiotic larvae had more DNA damage than those in non-symbiotic larvae. This result suggests that symbiotic algae are a source of oxidative stress in larvae under conditions at the ocean surface.

Item ID: 22510
Item Type: Article (Refereed Research - C1)
ISSN: 1021-5506
Date Deposited: 06 Aug 2012 06:12
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960802 Coastal and Estuarine Flora, Fauna and Biodiversity @ 100%
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