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Microalgae Genomics and Metagenomics
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Microalgae Genomics and Metagenomics

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Genetics, Genomics and Biotechnology".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 1843

Special Issue Editor

Prof. Dr. Alex Troitsky

E-Mail Website
Guest Editor
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
Interests: plant molecular phylogeny and systematics; genome evolution; biodiversity; phytoplanktonic metagenome
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Microalgae constitute a phylogenetically heterogeneous group of unicellular photosynthetic organisms. They are an important component of the biosphere, being the primary producers in the food chains of water reservoirs and providing the synthesis of oxygen in quantities comparable to those created by terrestrial ecosystems. The diversity of microalgae is extremely large and includes representatives of eukaryotic green and red algae, glaucophytes, alveolates, stramenopiles, haptophytes, and cryptomonads, as well as prokaryotic blue-green algae (cyanobacteria). Genomic studies shed light on the phylogenetic relationships of these microorganisms and provide the basis for the development of their use as producers of biologically active compounds and biofuels.

Metagenomic and metabarcoding studies are leading to the discovery of many uncultivable strains and significantly expanding knowledge of phytoplankton diversity.

The forthcoming Special Issue is open to original research articles and reviews on all aspects of microalgae genomics, transcriptomics, metagenomics, and DNA barcoding, as well as on the evolution and functional roles of particular genes of these microorganisms.

Prof. Dr. Alex Troitsky
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. Plants is an international peer-reviewed open access semimonthly 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.

Keywords

  • microalgae
  • phytoplankton
  • cyanobacteria
  • eDNA
  • genomics
  • phylogenomics
  • metabarcoding
  • metagenomics
  • DNA barcoding
  • taxonomy

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Published Papers (2 papers)

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Research

16 pages, 6979 KiB  
Article
Diversity of Cyanobacterial Genera Present in Cabo Verde Marine Environments and the Description of Gibliniella gelatinosa sp. nov
by João Morais, Pedro Cruz, Guilherme Scotta Hentschke, Bruna Silva, Flavio Oliveira, Jorge Neves, Raquel Silva, Vitor Ramos, Pedro N. Leão and Vitor M. Vasconcelos
Plants 2025, 14(3), 299; https://doi.org/10.3390/plants14030299 - 21 Jan 2025
Viewed by 739
Abstract
The aim of this study was to document the biodiversity of cyanobacteria genera isolated from intertidal and subtidal zones in Cabo Verde. The identification of the strains was conducted using a polyphasic study, comprising 16S rRNA gene maximum likelihood and Bayesian inference phylogeny, [...] Read more.
The aim of this study was to document the biodiversity of cyanobacteria genera isolated from intertidal and subtidal zones in Cabo Verde. The identification of the strains was conducted using a polyphasic study, comprising 16S rRNA gene maximum likelihood and Bayesian inference phylogeny, 16S rRNA identity (p-distance), 16S–23S ITS secondary structure, morphological, and habitat analyses. A total of 51 strains were isolated by micromanipulation and by streaking biomass onto Petri dishes with a solid medium. Seventeen strains were identified as belonging to the Salileptolyngbya genus and five to Leptothoe; sixteen strains were distributed across twelve genera. Thirteen strains were grouped into eight distinct clades, but could not be assigned to any cyanobacterial genus, indicating that they could be described as new cyanobacterial genera in the future. The phylogenies also exhibited isolates LEGE 181157, LEGE 181224, and LEGE 181227 clustered with Gibliniella, but in a separate clade from the G. alaskensis type. The 16S rRNA gene identity values among these new isolates and G. alaskensis ranged from 94.4% to 95.5%. The 16S–23S ITS dissimilarity between LEGE 181224 and G. alaskensis was 9.4%. Morphologically, these three LEGE strains differ from G. alaskensis in that they have trichomes that are never coiled and have diffluent mucilaginous envelopes, whereas G. alaskensis has coiled trichomes with firm sheaths. Based on these strains, we describe here a new species of Gibliniella. Full article
(This article belongs to the Special Issue Microalgae Genomics and Metagenomics)
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14 pages, 2689 KiB  
Article
The rDNA Diversity, Interseasonal Dynamic, and Functional Role of Cyanobacteria Synechococcus in the Sub-Arctic White Sea
by Tatiana A. Belevich, Irina A. Milyutina, Olga V. Vorob’eva and Aleksey V. Troitsky
Plants 2024, 13(22), 3153; https://doi.org/10.3390/plants13223153 - 9 Nov 2024
Viewed by 784
Abstract
Planktonic unicellular cyanobacteria are the dominant biomass producers and carbon fixers in the global ocean ecosystem, but they are not abundant in polar seawater. The interseasonal dynamics of picocyanobacterial (PC) abundance, picophytoplankton primary production, and phylogenetic diversity of PC Synechococcus were studied in [...] Read more.
Planktonic unicellular cyanobacteria are the dominant biomass producers and carbon fixers in the global ocean ecosystem, but they are not abundant in polar seawater. The interseasonal dynamics of picocyanobacterial (PC) abundance, picophytoplankton primary production, and phylogenetic diversity of PC Synechococcus were studied in the sub-Arctic White Sea. The PC abundance varied from 0.2–0.3 × 106 cells/L in February to 5.2–16.7 × 106 cells/L in July. Picophytoplankton primary production ranged from 0.22 mg C/m3 per day in winter to 11.32 mg C/m3 per day in summer. Synechococcus abundance positively correlated with water temperature and river discharge that increased in recent years in the White Sea. Phylogenetic analysis of the 16S rRNA gene and ITS region clone libraries from the White Sea and Barents Sea eDNA revealed picocyanobacterial sequences related to marine Synechococcus subclusters 5.1-I, 5.I-IV, 5.2, and 5.3. All Synechococcus S5.1-I were common in the White and Barents seas and were consistently present in the picophytoplankton composition throughout the year. Synechococcus S5.2 and S5.3 appear in the PC community in summer, suggesting their river origin, and Synechococcus S5.1-IV inhabits only the Barents Sea and was not detected in the White Sea. A unique Synechococcus phylotype was revealed. It is expected that the increase in the abundance of PC and their increasing role in ecosystem functioning, as well as the enrichment of the species composition with new phylotypes in the semi-enclosed sub-Arctic White Sea, which is vulnerable to the effects of climate change, will be characteristic of all Arctic seas in general. Full article
(This article belongs to the Special Issue Microalgae Genomics and Metagenomics)
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