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Marine Drugs
Special Issues
Ecology, Diversity and Evolution of Diatoms
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Special Issue "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 1519

Special Issue Editors

Dr. Frederic Verret

E-Mail Website
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

18 pages, 16072 KiB  
Article
Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea
by
Julie Seveno
,
Ana Car
,
Damien Sirjacobs
,
Lovina Fullgrabe
,
Iris Dupčić Radić
,
Pierre Lejeune
,
Vincent Leignel
and
Jean-Luc Mouget
Mar. Drugs 2023, 21(11), 583; https://doi.org/10.3390/md21110583 - 08 Nov 2023
Viewed by 591
Abstract
Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H. karadagensis, H. nusantara, H. provincialis and H. [...] Read more.
Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H. karadagensis, H. nusantara, H. provincialis and H. silbo). Their marennine-like pigments have allelopathic, antioxidative, antiviral and antibacterial properties, which have been demonstrated in laboratory conditions. Marennine is also responsible for the greening of oysters, for example, in the Marennes Oléron area (France), a phenomenon that has economical and patrimonial values. While blue Haslea spp. blooms have been episodically observed in natural environments (e.g., France, Croatia, USA), their dynamics have only been investigated in oyster ponds. This work is the first description of blue Haslea spp. benthic blooms that develop in open environments on the periphyton, covering turf and some macroalgae-like Padina. Different sites were monitored in the Mediterranean Sea (Corsica, France and Croatia) and two different blue Haslea species involved in these blooms were identified: H. ostrearia and H. provincialis. A non-blue Haslea species was also occasionally encountered. The benthic blooms of blue Haslea followed the phytoplankton spring bloom and occurred in shallow calm waters, possibly indicating a prominent role of light to initiate the blooms. In the absence of very strong winds and water currents that can possibly disaggregate the blue biofilm, the end of blooms coincided with the warming of the upper water masses, which might be profitable for other microorganisms and ultimately lead to a shift in the biofilm community. 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 970
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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