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Marine Drugs
Special Issues
Ecology, Diversity and Evolution of Diatoms
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Ecology, Diversity and Evolution of Diatoms

A special issue of Marine Drugs (ISSN 1660-3397). This special issue belongs to the section "Marine Chemoecology for Drug Discovery".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 3328

Special Issue Editors

Dr. Frederic Verret

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Guest Editor
Hellenic Centre for Marine Research, Athens, Greece and Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Greece
Interests: functional genetics in diatoms; small non-coding RNAs; isoprenoid biosynthesis; ion channels and membrane transporters
Dr. Martha Valiadi

E-Mail Website
Guest Editor
Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Greece
Interests: phytoplankton functional genomics; diversity; evolution; ecology; toxins
Prof. Dr. Jean-Luc Mouget

E-Mail Website
Guest Editor
Laboratoire Biologie des Organismes, Stress, Santé, Environnement (BiOSSE), Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, France
Interests: diatom life cycle; Haslea genus; marennine; biotechnological applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,             

Diatoms are diverse and prominent eukaryotic unicellular algae contributing up to 20% of the global primary productivity. They play a pivotal role in the marine food web and the biogeochemical cycles of carbon and silicates. Diatoms belong to the eukaryotic supergroup of Stramenopiles whose common ancestor is thought to derive from a secondary endosymbiotic event between a heterotrophic host and a red/green alga. This original evolutionary history has endowed diatoms with a peculiar genetic makeup and metabolism, contributing to their ecological success in contemporary oceans. Recent advances in next-generation sequencing, metabolomics, bioactivity screening, and co-culturing approaches have shed new light on the variety, biosynthetic pathways, activity, and ecophysiological roles of diatom metabolites.

For this Special Issue, we invite academic and industry scientists to submit reviews and original research articles focusing on diatom metabolites in the context of diatom ecology, diversity, evolution, and biotechnological applications.

Dr. Frederic Verret
Dr. Martha Valiadi
Prof. Dr. Jean-Luc Mouget
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Marine Drugs is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • diatoms
  • evolution
  • diversity
  • ecology
  • lice cycle
  • metabolites
  • toxins
  • cell signaling
  • high-added-value compounds

Published Papers (2 papers)

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Research

19 pages, 4583 KiB  
Article
Lipidome Plasticity Enables Unusual Photosynthetic Flexibility in Arctic vs. Temperate Diatoms
by Jon Brage Svenning, Terje Vasskog, Karley Campbell, Agnethe Hansen Bæverud, Torbjørn Norberg Myhre, Lars Dalheim, Zoé Lulu Forgereau, Janina Emilia Osanen, Espen Holst Hansen and Hans C. Bernstein
Mar. Drugs 2024, 22(2), 67; https://doi.org/10.3390/md22020067 - 27 Jan 2024
Viewed by 1570
Abstract
The diatom lipidome actively regulates photosynthesis and displays a high degree of plasticity in response to a light environment, either directly as structural modifications of thylakoid membranes and protein–pigment complexes, or indirectly via photoprotection mechanisms that dissipate excess light energy. This acclimation is [...] Read more.
The diatom lipidome actively regulates photosynthesis and displays a high degree of plasticity in response to a light environment, either directly as structural modifications of thylakoid membranes and protein–pigment complexes, or indirectly via photoprotection mechanisms that dissipate excess light energy. This acclimation is crucial to maintaining primary production in marine systems, particularly in polar environments, due to the large temporal variations in both the intensity and wavelength distributions of downwelling solar irradiance. This study investigated the hypothesis that Arctic marine diatoms uniquely modify their lipidome, including their concentration and type of pigments, in response to wavelength-specific light quality in their environment. We postulate that Arctic-adapted diatoms can adapt to regulate their lipidome to maintain growth in response to the extreme variability in photosynthetically active radiation. This was tested by comparing the untargeted lipidomic profiles, pigmentation, specific growth rates and carbon assimilation of the Arctic diatom Porosira glacialis vs. the temperate species Coscinodiscus radiatus during exponential growth under red, blue and white light. Here, we found that the chromatic wavelength influenced lipidome remodeling and growth in each strain, with P. glacialis showing effective utilization of red light coupled with increased inclusion of primary light-harvesting pigments and polar lipid classes. These results indicate a unique photoadaptation strategy that enables Arctic diatoms like P. glacialis to capitalize on a wide chromatic growth range and demonstrates the importance of active lipid regulation in the Arctic light environment. Full article
(This article belongs to the Special Issue Ecology, Diversity and Evolution of Diatoms)
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21 pages, 3717 KiB  
Article
Removal of the Basic and Diazo Dyes from Aqueous Solution by the Frustules of Halamphora cf. salinicola (Bacillariophyta)
by Aleksandra Golubeva, Piya Roychoudhury, Przemysław Dąbek, Oleksandra Pryshchepa, Paweł Pomastowski, Jagoda Pałczyńska, Piotr Piszczek, Michał Gloc, Renata Dobrucka, Agnieszka Feliczak-Guzik, Izabela Nowak, Bogusław Buszewski and Andrzej Witkowski
Mar. Drugs 2023, 21(5), 312; https://doi.org/10.3390/md21050312 - 19 May 2023
Cited by 1 | Viewed by 1412
Abstract
Industrial wastes with hazardous dyes serve as a major source of water pollution, which is considered to have an enormous impact on public health. In this study, an eco-friendly adsorbent, the porous siliceous frustules extracted from the diatom species Halamphora cf. salinicola, [...] Read more.
Industrial wastes with hazardous dyes serve as a major source of water pollution, which is considered to have an enormous impact on public health. In this study, an eco-friendly adsorbent, the porous siliceous frustules extracted from the diatom species Halamphora cf. salinicola, grown under laboratory conditions, has been identified. The porous architecture and negative surface charge under a pH of 7, provided by the various functional groups via Si–O, N–H, and O–H on these surfaces, revealed by SEM, the N2 adsorption/desorption isotherm, Zeta-potential measurement, and ATR-FTIR, respectively, made the frustules an efficient mean of removal of the diazo and basic dyes from the aqueous solutions, 74.9%, 94.02%, and 99.81% against Congo Red (CR), Crystal Violet (CV), and Malachite Green (MG), respectively. The maximum adsorption capacities were calculated from isotherms, as follows: 13.04 mg g−1, 41.97 mg g−1, and 33.19 mg g−1 against CR, CV, and MG, respectively. Kinetic and isotherm models showed a higher correlation to Pore diffusion and Sips models for CR, and Pseudo-Second Order and Freundlich models for CV and MG. Therefore, the cleaned frustules of the thermal spring-originated diatom strain Halamphora cf. salinicola could be used as a novel adsorbent of a biological origin against anionic and basic dyes. Full article
(This article belongs to the Special Issue Ecology, Diversity and Evolution of Diatoms)
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