Marine Natural Products: Chemical Ecology and Metabolomics

A special issue of Metabolites (ISSN 2218-1989). This special issue belongs to the section "Environmental Metabolomics".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 3922

Special Issue Editor


E-Mail Website
Guest Editor
Centre des Recherches et Observatoire de l’Environnement, PSL Research University, EPHE-UPVD-CNRS, CRIOBE USR 3278, 66860 Perpignan, France
Interests: marine chemical ecology; structural characterization of natural products; chemical analysis/metabolomic approach
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

Marine natural products research has now become a multidisciplinary field of investigation, combining complementary technologies and methodologies to explore the relatively unknown field of marine chemodiversity. Over the last century, chemists have focused their efforts on the discovery of novel bioactive molecules from this promising source of chemical diversity and reported a great number of original structures exhibiting interesting pharmacological properties sometimes based on new modes of action.

In addition to these anthropocentric investigations, marine chemical ecology has, within the last twenty years, emerged as an important field of study to highlight and understand the role of bioactive compounds as mediators of organismal interactions in the marine environment. For many years, marine biologists have investigated ecological processes such as prey selection, dominance, mating, herbivory, and consumer–prey interactions because they have a strong impact on marine ecosystems. It is now clear that chemical cues play a major role in interactions by attracting or repelling predators, inhibiting the development of competitors, and by protecting hosts from infection or UV radiation. It has been also demonstrated that chemically mediated interactions could be deeply affected by environmental stress due to biotic or abiotic factors.

In order to understand the complexity of chemical interactions in the marine environment, a collaboration between ecologists and chemists enhanced by the multidisciplinary background of young scientists represents a great opportunity to design realistic ecological experiments and to elucidate the structure of the chemical mediators involved in this language of life. These collaborations and developments in metabolomics tools in recent years have led to the development of an emerging approach to characterize environmentally relevant signaling molecules. This concept, based on the rapid assessment of the global content of small molecules produced by a living organism, allows for the comparison of metabolic profiles, thus making the elucidation of key compound structures more efficient. This is primarily achieved by helping to overcome the problems encountered with conventional bioassay-guided strategies.

The goal of this Special Issue is to highlight the strategies of metabolomics approaches and their specificities in the field of marine chemical ecology as well as the discovery of key signal mediators in the marine environment.

Dr. Nathalie Tapissier
Guest Editor

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. Metabolites 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 2700 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.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

17 pages, 2577 KiB  
Article
Enhanced β-carotene and Biomass Production by Induced Mixotrophy in Dunaliella salina across a Combined Strategy of Glycerol, Salinity, and Light
by Willian Capa-Robles, Ernesto García-Mendoza and José de Jesús Paniagua-Michel
Metabolites 2021, 11(12), 866; https://doi.org/10.3390/metabo11120866 - 13 Dec 2021
Cited by 8 | Viewed by 3473
Abstract
Current mixotrophic culture systems for Dunaliella salina have technical limitations to achieve high growth and productivity. The purpose of this study was to optimize the mixotrophic conditions imposed by glycerol, light, and salinity that lead to the highest biomass and β-carotene yields in [...] Read more.
Current mixotrophic culture systems for Dunaliella salina have technical limitations to achieve high growth and productivity. The purpose of this study was to optimize the mixotrophic conditions imposed by glycerol, light, and salinity that lead to the highest biomass and β-carotene yields in D. salina. The combination of 12.5 mM glycerol, 3.0 M salinity, and 50 μmol photons m−2 s−1 light intensity enabled significant assimilation of glycerol by D. salina and consequently enhanced growth (2.1 × 106 cell mL−1) and β-carotene accumulation (4.43 pg cell−1). The saline and light shock induced the assimilation of glycerol by this microalga. At last stage of growth, the increase in light intensity (300 μmol photons m−2 s−1) caused the β-carotene to reach values higher than 30 pg cell−1 and tripled the β-carotene values obtained from photoautotrophic cultures using the same light intensity. Increasing the salt concentration from 1.5 to 3.0 M NaCl (non-isosmotic salinity) produced higher growth and microalgal β-carotene than the isosmotic salinity 3.0 M NaCl. The mixotrophic strategy developed in this work is evidenced in the metabolic capability of D. salina to use both photosynthesis and organic carbon, viz., glycerol that leads to higher biomass and β-carotene productivity than that of an either phototrophic or heterotrophic process alone. The findings provide insights into the key role of exogenous glycerol with a strategic combination of salinity and light, which evidenced unknown roles of this polyol other than that in osmoregulation, mainly on the growth, pigment accumulation, and carotenogenesis of D. salina. Full article
(This article belongs to the Special Issue Marine Natural Products: Chemical Ecology and Metabolomics)
Show Figures

Figure 1

Back to TopTop