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Postępy Mikrobiologii - Advancements of Microbiology

Polish Society of Microbiologists

Subject: Microbiology

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ISSN: 0079-4252
eISSN: 2545-3149

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FEATURED ARTICLES

VOLUME 56 , ISSUE 4 (April 2017) - List of articles

MICROBIOLOGICAL CONTAMINATIONS OF UNDERGROUND GAS STORAGE FACILITIES AND NATURAL GAS PIPELINES

Agnieszka Staniszewska/ Alin Kunicka-Styczyńska/ Krzysztof Ziemiński

The growing demand for natural gas is primarily due to an increase in the share of gas in electricity production. Replacing coal with natural gas results in a significant decrease in emissions of greenhouse gases and dusts. The presence of microorganisms may be the cause of underground gas storage (UGS) facilities and pipelines deterioration. Microorganisms and their metabolic products contribute to the formation of sudden and unexpected failure causing loss of energy security by: decline in the(..)

DOI: 10.21307/PM-2017.56.4.381

GENETIC DIVERSITY OF BOVINE DIARRHEA AND MUCOSAL DISEASE VIRUS

Paweł Mirosław/ Aleksandra Antos/ Mirosław Polak

Bovine viral diarrhea virus (BVDV) is classified as a member of the Pestivirus genus of the Flaviviridae family. BVDV is one of the most important viral pathogens of ruminants worldwide, causing severe economic losses. Infection results in a wide range of clinical manifestations, ranging from mild respiratory disease to fetal death and mucosal disease. The virus particles are small and contain a single-stranded, positive-sense RNA molecule of approximately 12.3 kb with one large open reading fra(..)

DOI: 10.21307/PM-2017.56.4.389

DEADLY MICROBES – MICROBES USED AS A BIOLOGICAL WEAPON

Karol Abramczyk/ Anna Gałązka

Due to the development of civilization, people’s needs and expectations increase. The global development of civilization, the desire of some countries to expand their borders and achieve a higher political, social and military influence, cause insecurity among the people. Security is one of the main factors for the proper functioning of individuals and whole societies. Currently, a major threat to people is terrorism. Especially dangerous is the use of biological weapons for this purpose, which (..)

DOI: 10.21307/PM-2017.56.4.395

NON-CONVENTIONAL YEAST METSCHNIKOWIA PULCHERRIMA AND ITS APPLICATION IN BIOTECHNOLOGY

Ewelina Pawlikowska/ Dorota Kręgiel

Metschnikowia spp. are extensively studied “non-conventional” yeasts. Strains belonging to these genera are considered as non-pathogenic and safe. The unique properties of Metschnikowia spp. allow us to look at these microorganisms as a promising subject for evolutionary genetics, taxonomy, ecology, as well as a natural biocontrol agent in biotechnology. This article provides a synthesis of the systematics, morphology, ecology and physiology of Metschnikowia spp., with special attention to M. pu(..)

DOI: 10.21307/PM-2017.56.4.405

METABOLITES OF LACTIC ACID BACTERIA – OVERVIEW AND INDUSTRIAL APPLICATIONS

Katarzyna Ratajczak/ Agnieszka Piotrowska-Cyplik

Lactic acid bacteria are one of the most commonly found microorganisms in food. One of the reasons behind their popularity are their probiotic properties. Lactic acid bacteria produce a wide range of metabolites which often find use as antimicrobial agents or preservatives. The efficacy and efficiency of these compounds are vastly different. The most promising group of lactic acid bacteria metabolites are bacteriocins. However, there are crucial issues with the application of bacteriocins in the(..)

DOI: 10.21307/PM-2017.56.4.416

ANTIBIOTIC BIOSYNTHESIS AND SECONDARY METABOLISM IN HIGH-YIELDING STRAINS OF STREPTOMYCES, PENICILLIUM CHRYSOGENUM AND ACREMONIUM CHRYSOGENUM

Wiesław Kurzątkowski/ Joanna Kuczerowska

In this article, the secondary metabolism as a basis for antibiotics production by industrial strains of Streptomyces, Penicillium chrysogenum and Acremonium chrysogenum is discussed. Images from transmission electron microscopy reveal some important features of the mycelial cells which are related to antibiotics biosynthesis. This discovery is important for further industrial strain improvement and has economic significance. Possibilities of new strategies for antimicrobial treatment are discus(..)

DOI: 10.21307/PM-2017.56.4.422

AMOEBAE OF THE GENUS ACANTHAMOEBA – PATHOLOGICAL AGENTS IN HUMANS

Marcin Padzik/ Edyta B. Hendiger/ Lidia Chomicz/ Jacek P. Szaflik

Free living, cosmopolitan amoebae of the genus Acanthamoeba present a serious risk to human health. As facultative human parasites, these amoebae may cause health and life-threatening diseases, such as Acanthamoeba keratitis (AK), granulomatous amoebic encephalitis (GAE) and cutaneous acanthamebiasis. AK is a severe, vision-threatening cornea infection with non-specific symptoms and course. GAE is a unique central nervous system disease, almost always leading to death. Cutaneous acanthamebiasis (..)

DOI: 10.21307/PM-2017.56.4.429

TAXONOMY, VIRULENCE AND LIFE CYCLES OF BACILLUS CEREUS SENSU LATO

Marek Bartoszewicz/ Urszula Czyżewska

Bacillus cereus sensu lato is a group of several species of Gram-positive sporeformers ubiquitous in nature and showing huge impact on human activities. They are often found in soil, air, plant material, animal tissues and digestive tracts as well as in food products. Their genetic similarities and frequent horizontal gene transfer causes doubts regarding their taxonomy. In addition, their toxicity and psychrotolerance constitute serious problems in the dairy industry, being responsible for food(..)

DOI: 10.21307/PM-2017.56.4.440

CHARACTERISTICS AND POTENTIAL APPLICATIONS OF CIRCULAR BACTERIOCINS

Urszula Błaszczyk/ Kamila Dąbrowska

Bacteriocins are ribosomally synthesized peptides or proteins exerting anatagonistic activity toward organisms which are closely related to the producer strain. Circular bacteriocins are produced by Gram-positive bacteria, mainly lactic acid bacteria, and to a lesser extent by Bacillus, Clostridium and Staphylococcus genera. These bacteriocins are characterized by the head-to-tail cyclization of their backbone. The circular nature of these peptides makes them resistant to many proteolytic enzyme(..)

DOI: 10.21307/PM-2017.56.4.451

CHANGES IN THE TAXONOMY OF γ-PROTEOBACTERIA, MODIFICATION OF THE ORDER ENTEROBACTERIALES AND NOVEL FAMILIES WITHIN ENTEROBACTERALES ORD. NOV.

Paweł Nawrotek/ Bartłomiej Grygorcewicz/ Adrian Augustyniak

Prokaryotic diversity increases every year with each new described species. Since the first discoveries of microorganisms, researchers’ endeavours are dedicated to the systematisation of all known living organisms in a consistent taxonomy. Originally based on morphology, in recent years modern taxonomy develops thanks to the implemenation of new discoveries in the fields of biochemistry and genetics. In the last thirty years, ribotyping was the leading technique used to classify microorganisms. (..)

DOI: 10.21307/PM-2017.56.4.465

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