alexa Molecular Response To Toxic Diatom-derived Aldehydes In The Sea Urchin Paracentrotus Lividus | 17122
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
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5th World Congress on Biotechnology

Stefano Varrella, Giovanna Romano, Adrianna Ianora, Nadia Ruocco and Maria Costantini
ScientificTracks Abstracts: J Biotechnol Biomater
DOI: 10.4172/2155-952X.S1.027
Abstract
Diatoms are dominant photosynthetic organisms in the world?s oceans and are considered essential in the transfer of energy through the marine food web. These unicellular algae produce secondary metabolites such as polyunsaturated aldehydes and other products deriving from the oxidation of fatty acids, collectively termed oxylipins. In recent years diatom-derived polyunsaturated aldehydes (PUAs) are reported as having a negative influence on the reproductive success of planktonic copepods and benthic invertebrates. In this study we evaluated the effects of two PUAs, heptadienal and octadienal, which have never been tested before from the molecular point of view, using as a model organism the sea urchin Paracentrotuslividus, in comparison with the PUA decadienal, the most studied aldehyde until now. To achieve this goal we followed the expression levels by Real Time qPCR of thirty one genes, having a key role in a broad range of functional responses, such as stress, development, differentiation, skeletogenesis and detoxification processes. Strong differences occurred, suggesting that these stress conditions may alter gene expression and development. These results may be useful to understand how gene expression may be used as an early indicator of stressful conditions in the marine environment. More in general, these studies are fundamental to understand how marine organisms try to defend themselves from environmental toxicants, affording protection by an integrated network of genes.
Biography
Stefano Varrellawas awarded a master?s degree with Honors in Biology from ?Federico II? University of Naples in 2012. His undergraduate studies focused on relevance of arginine in DNA oxidative stress induced by copper-H1 histone complexes. In 2013, He enrolled in the Open University PhD program at SZN and is currently working on response to environmental stress in reproduction and embryonic development in sea urchin Paracentrotuslividus. He is trying to understand the cellular mechanisms, mainly by molecular point of view, underlying the stress response of diatom-derived products.
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