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Microorganisms, Volume 6, Issue 2

2018 June - 28 articles

Cover Story: Mars is currently considered relatively inhospitable due to its freezing temperatures, among other factors. Should life currently exist on the planet, it would likely consist of subsurface microorganisms capable of surviving and/or metabolizing at cold temperatures. Methanogens are found in a wide variety of environments on Earth, ranging from seafloor hydrothermal vents to arctic permafrost. Two non-psychrophilic species of methanogens, Methanobacterium formicicum and Methanothermobacter wolfeii, have been shown capable of active growth following long-term exposure (~4 years) to freezing temperatures. View the paper here.
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Articles (28)

  • Review
  • Open Access
60 Citations
9,311 Views
21 Pages

Mucus-Pathogen Interactions in the Gastrointestinal Tract of Farmed Animals

  • Macarena P. Quintana-Hayashi,
  • Médea Padra,
  • János Tamás Padra,
  • John Benktander and
  • Sara K. Lindén

Gastrointestinal infections cause significant challenges and economic losses in animal husbandry. As pathogens becoming resistant to antibiotics are a growing concern worldwide, alternative strategies to treat infections in farmed animals are necessa...

  • Opinion
  • Open Access
66 Citations
13,293 Views
12 Pages

The pathogenesis of numerous human multifaceted devastating diseases, including a variety of neurodegenerative and autoimmune diseases, is associated with alterations in the gut microbiota; however, the underlying mechanisms are not completely unders...

  • Review
  • Open Access
70 Citations
11,512 Views
18 Pages

Mucus: An Underestimated Gut Target for Environmental Pollutants and Food Additives

  • Kévin Gillois,
  • Mathilde Lévêque,
  • Vassilia Théodorou,
  • Hervé Robert and
  • Muriel Mercier-Bonin

Synthetic chemicals (environmental pollutants, food additives) are widely used for many industrial purposes and consumer-related applications, which implies, through manufactured products, diet, and environment, a repeated exposure of the general pop...

  • Review
  • Open Access
28 Citations
7,977 Views
10 Pages

Chemical Elicitors of Antibiotic Biosynthesis in Actinomycetes

  • Anton P. Tyurin,
  • Vera A. Alferova and
  • Vladimir A. Korshun

Whole genome sequencing of actinomycetes has uncovered a new immense realm of microbial chemistry and biology. Most biosynthetic gene clusters present in genomes were found to remain “silent” under standard cultivation conditions. Some sm...

  • Article
  • Open Access
11 Citations
6,630 Views
12 Pages

The discovery of new enzymes for industrial application relies on a robust discovery pipeline. Such a pipeline should facilitate efficient molecular cloning, recombinant expression and functional screening procedures. Previously, we have developed a...

  • Review
  • Open Access
28 Citations
6,765 Views
15 Pages

The emergence and spread of pathogenic fungi resistant to currently used antifungal drugs represents a serious challenge for medicine and agriculture. The use of smart antimicrobials, so-called “dirty drugs” which affect multiple cellular...

  • Article
  • Open Access
21 Citations
6,883 Views
18 Pages

A Sensitive and Rapid Method to Determine the Adhesion Capacity of Probiotics and Pathogenic Microorganisms to Human Gastrointestinal Mucins

  • Bélinda Ringot-Destrez,
  • Zéa D’Alessandro,
  • Jean-Marie Lacroix,
  • Muriel Mercier-Bonin,
  • Renaud Léonard and
  • Catherine Robbe-Masselot

Mucus is the habitat for the microorganisms, bacteria and yeast that form the commensal flora. Mucins, the main macromolecules of mucus, and more specifically, the glycans that cover them, play essential roles in microbial gastrointestinal colonizati...

  • Article
  • Open Access
11 Citations
4,789 Views
8 Pages

Comparing the Recombinant Protein Production Potential of Planktonic and Biofilm Cells

  • Alexandra Soares,
  • Luciana Calheiros Gomes and
  • Filipe José Mergulhão

Recombinant protein production in bacterial cells is commonly performed using planktonic cultures. However, the natural state for many bacteria is living in communities attached to surfaces forming biofilms. In this work, a flow cell system was used...

  • Review
  • Open Access
111 Citations
15,646 Views
17 Pages

Since the introduction of recombinant protein expression in the second half of the 1970s, the growth of the biopharmaceutical field has been rapid and protein therapeutics has come to the foreground. Biophysical and structural characterisation of rec...

  • Review
  • Open Access
76 Citations
9,147 Views
10 Pages

The fungal genus Wallemia of the order Wallemiales (Wallemiomycotina, Basidiomycota) comprises the most xerotolerant, xerophilic and also halophilic species worldwide. Wallemia spp. are found in various osmotically challenged environments, such as dr...

  • Article
  • Open Access
15 Citations
6,690 Views
15 Pages

Binding of Helicobacter pylori to Human Gastric Mucins Correlates with Binding of TFF1

  • Ciara Dunne,
  • Julie Naughton,
  • Gina Duggan,
  • Catherine Loughrey,
  • Michelle Kilcoyne,
  • Lokesh Joshi,
  • Stephen Carrington,
  • Helen Earley,
  • Steffen Backert and
  • Marguerite Clyne
  • + 2 authors

Helicobacter pylori binds to the gastric mucin, MUC5AC, and to trefoil factor, TFF1, which has been shown to interact with gastric mucin. We examined the interactions of TFF1 and H. pylori with purified gastrointestinal mucins from different animal s...

  • Review
  • Open Access
16 Citations
6,180 Views
9 Pages

Mucoralean invasive fungal infections, while unusual among the general population, have a high mortality rate among immunocompromised individuals who become infected. They are also common spoilage organisms in cultured dairy products, some fresh prod...

  • Brief Report
  • Open Access
5 Citations
4,350 Views
9 Pages

Methanogens have been considered models for life on Mars for many years. In order to survive any exposure at the surface of Mars, methanogens would have to endure Martian UVC radiation. In this research, we irradiated hydrated and desiccated cultures...

  • Review
  • Open Access
46 Citations
9,974 Views
19 Pages

Genetic Tools and Techniques for Recombinant Expression in Thermophilic Bacillaceae

  • Eivind B. Drejer,
  • Sigrid Hakvåg,
  • Marta Irla and
  • Trygve Brautaset

Although Escherichia coli and Bacillus subtilis are the most prominent bacterial hosts for recombinant protein production by far, additional species are being explored as alternatives for production of difficult-to-express proteins. In particular, fo...

  • Article
  • Open Access
4 Citations
6,135 Views
20 Pages

For the first time, the differential rates of synthesis of all the key monooxygenases involved in the catabolism by Pseudomonas putida NCIMB 10007 of bicyclic (rac)-camphor to ∆2,5-3,4,4-trimethylpimelyl-CoA, the first aliphatic pathway intermediate,...

  • Review
  • Open Access
37 Citations
8,684 Views
26 Pages

The Role of Glycans in Bacterial Adhesion to Mucosal Surfaces: How Can Single-Molecule Techniques Advance Our Understanding?

  • Cécile Formosa-Dague,
  • Mickaël Castelain,
  • Hélène Martin-Yken,
  • Karen Dunker,
  • Etienne Dague and
  • Marit Sletmoen

Bacterial adhesion is currently the subject of increased interest from the research community, leading to fast progress in our understanding of this complex phenomenon. Resent research within this field has documented the important roles played by gl...

  • Review
  • Open Access
19 Citations
5,874 Views
9 Pages

Osteoarticular infections (OSI) are a significant cause of hospitalizations and morbidity in young children. The pediatric patient with OSI presents unique challenges in diagnosis and management due to higher morbidity, effect on growth plate with as...

  • Review
  • Open Access
242 Citations
35,874 Views
23 Pages

Comparison of Yeasts as Hosts for Recombinant Protein Production

  • Antonio Milton Vieira Gomes,
  • Talita Souza Carmo,
  • Lucas Silva Carvalho,
  • Frederico Mendonça Bahia and
  • Nádia Skorupa Parachin

Recombinant protein production emerged in the early 1980s with the development of genetic engineering tools, which represented a compelling alternative to protein extraction from natural sources. Over the years, a high level of heterologous protein w...

  • Article
  • Open Access
5 Citations
5,213 Views
14 Pages

Recombinant Inga Laurina Trypsin Inhibitor (ILTI) Production in Komagataella Phaffii Confirms Its Potential Anti-Biofilm Effect and Reveals an Anti-Tumoral Activity

  • Fábio C. Carneiro,
  • Simone S. Weber,
  • Osmar N. Silva,
  • Ana Cristina Jacobowski,
  • Marcelo H. S. Ramada,
  • Maria L. R. Macedo,
  • Octávio L. Franco and
  • Nádia S. Parachin

Protease inhibitors have a broad biotechnological application ranging from medical drugs to anti-microbial agents. The Inga laurina trypsin inhibitor (ILTI) previously showed a great in vitro inhibitory effect under the adherence of Staphylococcus sp...

  • Review
  • Open Access
24 Citations
4,996 Views
16 Pages

There is great geographical variation in the frequency of Escherichia coli O157 infections that correlates with important differences in the bovine reservoir of each country. Our group carried out a broad molecular characterization of human and bovin...

  • Review
  • Open Access
24 Citations
55,945 Views
32 Pages

An extensive body of evidence documents the importance of the gut microbiome both in health and in a variety of human diseases. Cell and animal studies describing this relationship abound, whilst clinical studies exploring the associations between ch...

  • Article
  • Open Access
12 Citations
6,840 Views
24 Pages

Although the martian environment is currently cold and dry, geomorphological features on the surface of the planet indicate relatively recent (<4 My) freeze/thaw episodes. Additionally, the recent detections of near-subsurface ice as well as hydra...

  • Review
  • Open Access
45 Citations
9,765 Views
20 Pages

Aquaculture is one of the most rapidly expanding farming systems in the world. Its rapid expansion has brought with it several pathogens infecting different fish species. As a result, there has been a corresponding expansion in vaccine development to...

  • Article
  • Open Access
6 Citations
8,145 Views
23 Pages

Coping with Environmental Eukaryotes; Identification of Pseudomonas syringae Genes during the Interaction with Alternative Hosts or Predators

  • Federico Dorati,
  • Glyn A. Barrett,
  • Maria Sanchez-Contreras,
  • Tanya Arseneault,
  • Mateo San José,
  • David J. Studholme,
  • Jesús Murillo,
  • Primitivo Caballero,
  • Nicholas R. Waterfield and
  • Robert W. Jackson
  • + 2 authors

Understanding the molecular mechanisms underpinning the ecological success of plant pathogens is critical to develop strategies for controlling diseases and protecting crops. Recent observations have shown that plant pathogenic bacteria, particularly...

  • Article
  • Open Access
14 Citations
7,861 Views
16 Pages

Production and Characterization of an Extracellular Acid Protease from Thermophilic Brevibacillus sp. OA30 Isolated from an Algerian Hot Spring

  • Mohamed Amine Gomri,
  • Agustín Rico-Díaz,
  • Juan-José Escuder-Rodríguez,
  • Tedj El Moulouk Khaldi,
  • María-Isabel González-Siso and
  • Karima Kharroub

Proteases have numerous biotechnological applications and the bioprospection for newly-thermostable proteases from the great biodiversity of thermophilic microorganisms inhabiting hot environments, such as geothermal sources, aims to discover more ef...

  • Review
  • Open Access
37 Citations
6,998 Views
25 Pages

Translation and Translational Control in Dinoflagellates

  • Sougata Roy,
  • Rosemary Jagus and
  • David Morse

Dinoflagellates are unicellular protists that feature a multitude of unusual nuclear features, including large genomes, packaging of DNA without histones, and multiple gene copies organized as tandem gene arrays. Furthermore, all dinoflagellate mRNAs...

  • Editorial
  • Open Access
4 Citations
3,932 Views
2 Pages

Environmental issues such as eutrophication, ocean acidification, sea level rise, saltwater intrusion, increase in carbon dioxide levels, or rise of average global temperatures, among many others, are impacting and changing whole ecosystems [...]

  • Editorial
  • Open Access
6 Citations
3,976 Views
2 Pages

While plant-microbe symbioses involving root nodules (Rhizobia and Frankia) or the root-soil interface (rhizosphere) have been well studied, the intimate interaction of microbial endophytes with the plant host is a relatively new field of research.[...]

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Microorganisms - ISSN 2076-2607