First molecular evidence of diatom effects in the copepod Calanus helgolandicus

Lauritano, Chiara; Borra, Marco; Carotenuto, Ylenia; Biffali, Elio; Miralto, Antonio; Procaccini, Gabriele; Ianora, Adrianna

doi:10.1016/j.jembe.2011.05.009

Cited by 44 publications

(42 citation statements)

References 41 publications

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“…The other two heat shock proteins, hsp60 and hsp56 , were also targeted by PUAs; these genes are reported as a part of a protection system against different stressors enhancing cell survival and normal cellular homeostasis [12,28,40,41,42]. …”

Section: Discussionmentioning

confidence: 99%

Molecular Response to Toxic Diatom-Derived Aldehydes in the Sea Urchin Paracentrotus lividus

et al. 2014

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Diatoms are dominant photosynthetic organisms in the world’s oceans and represent a major food source for zooplankton and benthic filter-feeders. However, their beneficial role in sustaining marine food webs has been challenged after the discovery that they produce secondary metabolites, such as polyunsaturated aldehydes (PUAs), which negatively affect the reproductive success of many invertebrates. Here, we report the effects of two common diatom PUAs, heptadienal and octadienal, which have never been tested before at the molecular level, using the sea urchin, Paracentrotus lividus, as a model organism. We show that both PUAs are able to induce teratogenesis (i.e., malformations), as already reported for decadienal, the better-studied PUA of this group. Moreover, post-recovery experiments show that embryos can recover after treatment with all three PUAs, indicating that negative effects depend both on PUA concentrations and the exposure time of the embryos to these metabolites. We also identify the time range during which PUAs exert the greatest effect on sea urchin embryogenesis. Finally, we report the expression levels of thirty one genes (having a key role in a broad range of functional responses, such as stress, development, differentiation, skeletogenesis and detoxification processes) in order to identify the common targets affected by PUAs and their correlation with morphological abnormalities. This study opens new perspectives for understanding how marine organisms afford protection from environmental toxicants through an integrated network of genes.

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Section: Discussionmentioning

confidence: 99%

Molecular Response to Toxic Diatom-Derived Aldehydes in the Sea Urchin Paracentrotus lividus

et al. 2014

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“…Consequently, the number of RNA-based studies in copepods has increased in recent years (e.g., Aruda et al, 2011;Barreto et al, 2011;Flowers and Burton, 2006;Hansen et al, 2008aHansen et al, , 2008bHansen et al, , 2009Hansen et al, , 2010Ki et al, 2009;Kim et al, 2011;Lauritano et al, 2011aLauritano et al, , 2011bLauritano et al, , 2012aRhee et al, 2009;Seo et al, 2006aSeo et al, , 2006bSeo et al, , 2006cTarrant et al, 2008;Voznesensky et al, 2004). Most of these studies focused on the gene expression of the stress response proteins in the model copepod species Calanus finmarchicus and Tigriopus japonicus.…”

Section: Introductionmentioning

confidence: 99%

An improved method for achieving high-quality RNA for copepod transcriptomic studies

Zhang

Finiguerra

Dam

et al. 2013

Journal of Experimental Marine Biology and Ecology

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“…Pseudo-nitzschia produce the neurotoxin domoic acid and evidence from a widespread survey in the Pacifi c found it in both natural areas and areas that had been iron enriched (Silver et al 2010 ). The toxin can produce problems for organisms higher up the food chain (Miralto et al 1999 ) and may be produced in response to grazing, such as by copepods (Lauritano et al 2011(Lauritano et al , 2012. More recently a non-protein amino acid, β-N -methylamino-Lalanine (BMAA), has been discovered to be produced by six diatom species (Jiang et al 2014 ); previously, this compound, which causes a neurological disorder (Amyotrophic lateral sclerosis, ALS), was thought to be produced only by cyanobacteria.…”

Section: Toxicitymentioning

confidence: 99%

Ecology and Evolution of Marine Diatoms and Parmales

Kuwata

Jewson

2015

Marine Protists

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Diatoms and Parmales are microscopic, photosynthetic algal groups that both have siliceous cell walls. It is probable that they shared a common ancestor, but each has evolved along a quite distinct path. Diatoms have undergone extensive adaptive radiation and colonized a wide range of freshwater, terrestrial and marine habitats. They are particularly important in the ecology of the oceans, where it has been estimated that they are responsible for 40 % of global marine production. In contrast, Parmalean algae have remained restricted to more specifi c niches, mainly in marine coastal areas at high latitudes. They are small (from 2 to 5 μm) and single celled. Until recently, their ecology was largely unknown, but new research has begun to reveal their biology for the fi rst time. In this review, we concentrate on the roles and adaptations of both groups in the marine plankton, highlighting areas for future research.

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First molecular evidence of diatom effects in the copepod Calanus helgolandicus

Cited by 44 publications

References 41 publications

Molecular Response to Toxic Diatom-Derived Aldehydes in the Sea Urchin Paracentrotus lividus

Molecular Response to Toxic Diatom-Derived Aldehydes in the Sea Urchin Paracentrotus lividus

An improved method for achieving high-quality RNA for copepod transcriptomic studies

Ecology and Evolution of Marine Diatoms and Parmales

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