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Phototoxic effects of PAH and UVA exposure on molecular responses and developmental success in coral larvae

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dc.contributor Rsrc
dc.contributor Aims
dc.contributor Kaust
dc.contributor Jcu AGUSTI, SUSANA OVERMANS, SEBASTIAN NORDBORG, MIKAELA DIAZ-RUA, RUBEN BRINKMAN, DIANE L. NEGRI, ANDREW P. 2018-05-06T18:58:03Z 2018-05-06T18:58:03Z 2019-07-08T02:12:36Z 2018-05-06T18:58:03Z 2018-05-06T18:58:03Z 2019-07-08T02:12:36Z 2018-05-01
dc.identifier.citation Overmans S, Nordborg M, Diaz-Rua R, Brinkman DL, Negri AP, Agusti S (2018) Phototoxic effects of PAH and UVA exposure on molecular responses and developmental success in coral larvae. Aquatic Toxicology 198: 165-174
dc.identifier.issn 0166-445X
dc.description.abstract Exposure to polycyclic aromatic carbons (PAHs) poses a growing risk to coral reefs due to increasing shipping and petroleum extraction in tropical waters. Damaging effects of specific PAHs can be further enhanced by the presence of ultraviolet radiation, known as phototoxicity. We tested phototoxic effects of the PAHs anthracene and phenanthrene on larvae of the scleractinian coral Acropora tenuis in the presence and absence of UVA (320-400 nm). Activity of superoxide dismutase (SOD) enzyme was reduced by anthracene while phenanthrene and UVA exposure did not have any effect. Gene expression of MnSod remained constant across all treatments. The genes Catalase, Hsp70 and Hsp90 showed increased expression levels in larvae exposed to anthracene, but not phenanthrene. Gene expression of p53 was upregulated in the presence of UVA, but downregulated when exposed to PAHs. The influence on stress-related biochemical pathways and gene expresson in A. tenuis larvae was considerably greater for anthracene than phenanthrene, and UVA-induced phototoxicity was only evident for anthracene. The combined effects of UVA and PAH exposure on larval survival and metamorphosis paralleled the sub-lethal stress responses, clearly highlighting the interaction of UVA on anthracene toxicity and ultimately the coral's development.
dc.description.sponsorship We would like to express special thanks to Florita Flores and the SeaSim staff from AIMS for their expert support and assistance. This work was made possible by the KAUST baseline funding to S. Agusti, and a research grant set up as part of the collaborative research project between the Red Sea Research Center (RSRC) at King Abdullah University of Science and Technology (KAUST) and the Australian Institute of Marine Science (AIMS).
dc.language English
dc.subject Great-barrier-reef
dc.subject Marine & Freshwater Biology
dc.subject Cell-cycle Control
dc.subject Reef-building Coral
dc.subject Green Fluorescent Protein
dc.subject Crude-oil
dc.subject Uv Radiation
dc.subject Acropora
dc.subject Coral
dc.subject Oxidative Stress
dc.subject Toxicology
dc.subject Gene-expression
dc.subject Phototoxicity
dc.subject Symbiotic Sea-anemone
dc.subject Superoxide Dismutase (sod)
dc.subject Gene Expression
dc.subject Polycyclic Aromatic Hydrocarbon (pah)
dc.subject Antioxidant Enzymes
dc.subject Polycyclic Aromatic-hydrocarbons
dc.title Phototoxic effects of PAH and UVA exposure on molecular responses and developmental success in coral larvae
dc.type journal article
dc.identifier.doi 10.1016/j.aquatox.2018.03.008
dc.identifier.wos WOS:000430630100017

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