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Title: Transcriptome sequencing of three Pseudo-nitzschia species reveals comparable gene sets and the presence of Nitric Oxide Synthase genes in diatoms

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep12329· OSTI ID:1624783
 [1];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Stazione Zoologica Anton Dohrn, Villa Comunale Naples, (Italy)
  2. Stazione Zoologica Anton Dohrn, Villa Comunale Naples, (Italy)

Diatoms are among the most diverse eukaryotic microorganisms on Earth, they are responsible for a large fraction of primary production in the oceans and can be found in different habitats. Pseudo-nitzschia are marine planktonic diatoms responsible for blooms in coastal and oceanic waters. We analyzed the transcriptome of three species, Pseudo-nitzschia arenysensis, Pseudo-nitzschia delicatissima and Pseudo-nitzschia multistriata, with different levels of genetic relatedness. These species have a worldwide distribution and the last one produces the neurotoxin domoic acid. We were able to annotate about 80% of the sequences in each transcriptome and the analysis of the relative functional annotations allowed comparison of the main metabolic pathways, pathways involved in the biosynthesis of isoprenoids (MAV and MEP pathways) and pathways putatively involved in domoic acid synthesis. The search for homologous transcripts among the target species and other congeneric species resulted in the discovery of a sequence annotated as Nitric Oxide Synthase (NOS), found uniquely in Pseudo-nitzschia multistriata. The predicted protein product contained all the domains of the canonical metazoan sequence. Putative NOS sequences were found in other available diatom datasets, supporting a role for nitric oxide as signaling molecule in this group of microalgae.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1624783
Journal Information:
Scientific Reports, Vol. 5, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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A singular nitric oxide synthase with a globin domain found in Synechococcus PCC 7335 mobilizes N from arginine to nitrate journal August 2018
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Paleolimnology and resurrection ecology: The future of reconstructing the past journal December 2017
Gene Expression Variation Resolves Species and Individual Strains among Coral-Associated Dinoflagellates within the Genus Symbiodinium journal February 2016
Conserved Transcriptional Responses to Nutrient Stress in Bloom-Forming Algae journal July 2017
Surface sensing and stress-signalling in Ulva and fouling diatoms – potential targets for antifouling: a review journal May 2017
Finding a partner in the ocean: molecular and evolutionary bases of the response to sexual cues in a planktonic diatom journal April 2017
Grazer-induced transcriptomic and metabolomic response of the chain-forming diatom Skeletonema marinoi journal March 2018
Marine Neurotoxins’ Effects on Environmental and Human Health: An OMICS Overview journal December 2021
Transcriptomic responses to grazing reveal the metabolic pathway leading to the biosynthesis of domoic acid and highlight different defense strategies in diatoms journal February 2019
Divergent gene expression among phytoplankton taxa in response to upwelling: Divergent phytoplankton responses to upwelling journal August 2018
Inter- and Intra-Specific Transcriptional and Phenotypic Responses of Pseudo-nitzschia under Different Nutrient Conditions journal February 2019
Divergent gene expression among phytoplankton taxa in response to upwelling posted_content June 2018
Climate Change and the Impact of Greenhouse Gasses: CO2 and NO, Friends and Foes of Plant Oxidative Stress journal March 2018
The Auxin-Nitric Oxide Highway: A Right Direction in Determining the Plant Root System book January 2016