scholarly journals Editorial of Special Issue “Microalgal Molecules and Enzymes”

2021 ◽  
Vol 22 (24) ◽  
pp. 13450
Author(s):  
Chiara Lauritano ◽  
Assunta Saide
Keyword(s):  
Extreme Environments ◽  
Special Issue ◽  
Low Salinity ◽  
Unicellular Organisms

Microalgae are photosynthetic unicellular organisms that can be found in very different environments, both terrestrial and marine, including extreme environments such as cold, hot and high/low salinity [...]

scholarly journals A Special Issue on Microorganisms from Extreme Environments in Memory of Luigi Michaud (1974–2014)

Diversity ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 2
Author(s):  
Angelina Lo Giudice ◽  
Concetta Gugliandolo
Keyword(s):  
Microbial Diversity ◽  
Hydrothermal Vents ◽  
Extreme Environments ◽  
Research Paper ◽  
Special Issue ◽  
Research Papers ◽  
Biotechnological Potential ◽  
Geothermal Soils ◽  
Extremophilic Microorganisms ◽  
Shallow Hydrothermal Vents

A special issue (SI) titled “Microbial Diversity in Extreme Environments: Implications for Ecological and Applicative Perspectives” has been launched with the aim of showcasing the diversity and biotechnological potential of extremophilic microorganisms. The issue includes 10 research papers and four reviews that mainly address prokaryotes inhabiting hyperarid, hypercold, hyperalkaline and hypersaline (or polyextreme) environments, spanning from deserts to meromictic and glacier lakes around the globe. Thermophilic prokaryotes from shallow hydrothermal vents and Antarctic geothermal soils are also treated. The ecology and biotechnological perspectives of eukaryotes are discussed in two review papers and one research paper. This special issue serves as a memorial to Dr. Luigi Michaud (1974–2014), who dramatically passed away in Antarctica during underwater sampling activities.

scholarly journals Cyanobacteria and Eukaryotic Microalgae as Emerging Sources of Antibacterial Peptides

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5804
Author(s):  
Verónica Rojas ◽  
Luis Rivas ◽  
Constanza Cárdenas ◽  
Fanny Guzmán
Keyword(s):  
Cyclic Peptides ◽  
Extreme Environments ◽  
Mechanisms Of Action ◽  
Microbial Pathogens ◽  
Antibacterial Peptides ◽  
Tetraselmis Suecica ◽  
Antibacterial Compounds ◽  
Gram Positive Bacteria ◽  
Unicellular Organisms ◽  
Chlorella Species

Cyanobacteria and microalgae are oxygen-producing photosynthetic unicellular organisms encompassing a great diversity of species, which are able to grow under all types of extreme environments and exposed to a wide variety of predators and microbial pathogens. The antibacterial compounds described for these organisms include alkaloids, fatty acids, indoles, macrolides, peptides, phenols, pigments and terpenes, among others. This review presents an overview of antibacterial peptides isolated from cyanobacteria and microalgae, as well as their synergism and mechanisms of action described so far. Antibacterial cyanopeptides belong to different orders, but mainly from Oscillatoriales and Nostocales. Cyanopeptides have different structures but are mainly cyclic peptides. This vast peptide repertoire includes ribosomal and abundant non-ribosomal peptides, evaluated by standard conventional methodologies against pathogenic Gram-negative and Gram-positive bacteria. The antibacterial activity described for microalgal peptides is considerably scarcer, and limited to protein hydrolysates from two Chlorella species, and few peptides from Tetraselmis suecica. Despite the promising applications of antibacterial peptides and the importance of searching for new natural sources of antibiotics, limitations still persist for their pharmaceutical applications.

Guest Editorial Special Issue on Wireless Sensor Systems for Space and Extreme Environments

2014 ◽  
Vol 14 (11) ◽  
pp. 3737-3737
Author(s):  
Habib F. Rashvand ◽  
Paul D. Mitchell ◽  
Jose M. Alcaraz Calero ◽  
Ali Abedi ◽  
Subhas C. Mukhopadhyay ◽  
...  
Keyword(s):  
Guest Editorial ◽  
Extreme Environments ◽  
Wireless Sensor ◽  
Sensor Systems ◽  
Special Issue ◽  
Editorial Special Issue

scholarly journals Astrobiology field research in Moon/Mars analogue environments

2011 ◽  
Vol 10 (3) ◽  
pp. 137-139 ◽  
Author(s):  
B.H. Foing ◽  
C. Stoker ◽  
P. Ehrenfreund
Keyword(s):  
Extreme Environments ◽  
Field Research ◽  
Research Station ◽  
Special Issue ◽  
Field Campaign ◽  
Preliminary Results ◽  
Rio Tinto ◽  
Field Campaigns ◽  
Río Tinto ◽  
Desert Research

AbstractExtreme environments on Earth often provide similar terrain conditions to landing/operation sites on Moon and Mars. Several field campaigns (EuroGeoMars2009 and DOMMEX/ILEWG EuroMoonMars from November 2009 to March 2010) were conducted at the Mars Desert Research Station (MDRS) in Utah. Some of the key astrobiology results are presented in this special issue on ‘Astrobiology field research in Moon/Mars analogue environments’ relevant to investigate the link between geology, minerals, organics and biota. Preliminary results from a multidisciplinary field campaign at Rio Tinto in Spain are presented.

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