Results 41 to 50 of about 699 (147)

Purification and specificity of bacteriolytic enzyme I from Hartmannella glebae [PDF]

Applied and Environmental Microbiology, 1977
A soil amoeba (Hartmannella glebae), when grown in conjunction with Enterobacter aerogenes and Alcaligenes faecalis, produced two enzymes. Enzyme I was purified by gel filtration on Sephadex G-100 and chromatography on diethylaminoethyl-cellulose. It is a basic protein.
J M, Upadhyay, B A, Mares, D M, Hemelt, P G, Rivet   +3 more
openaire   +2 more sources

Identification of new amoebae strains in rainbow trout (Oncorhynchus mykiss, Walbaum) farms affected by nodular gill disease (NGD) in Northeastern Italy

Journal of Fish Diseases, Volume 47, Issue 6, June 2024.
Abstract Nodular gill disease (NGD) is an emerging condition associated with amoeba trophozoites in freshwater salmonid farms. However, unambiguous identification of the pathogens still must be achieved. This study aimed to identify the amoeba species involved in periodic NGD outbreaks in two rainbow trout (Oncorhynchus mykiss) farms in Northeastern ...
Ginevra Brocca, Alessandro Truant, Hana Peckova, Martina Lisnerová, Alberto Perolo, Marialetizia Fioravanti, Ivan Fiala, Gianfranco Gabai, Francesco Quaglio, Andrea Gustinelli   +9 more
wiley   +1 more source

Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes

Journal of Eukaryotic Microbiology, Volume 66, Issue 1, Page 4-119, January/February 2019., 2019
Abstract This revision of the classification of eukaryotes follows that of Adl et al., 2012 [J. Euk. Microbiol. 59(5)] and retains an emphasis on protists. Changes since have improved the resolution of many nodes in phylogenetic analyses. For some clades even families are being clearly resolved.
Sina M. Adl, David Bass, Christopher E. Lane, Julius Lukeš, Conrad L. Schoch, Alexey Smirnov, Sabine Agatha, Cedric Berney, Matthew W. Brown, Fabien Burki, Paco Cárdenas, Ivan Čepička, Lyudmila Chistyakova, Javier del Campo, Micah Dunthorn, Bente Edvardsen, Yana Eglit, Laure Guillou, Vladimír Hampl, Aaron A. Heiss, Mona Hoppenrath, Timothy Y. James, Anna Karnkowska, Sergey Karpov, Eunsoo Kim, Martin Kolisko, Alexander Kudryavtsev, Daniel J.G. Lahr, Enrique Lara, Line Le Gall, Denis H. Lynn, David G. Mann, Ramon Massana, Edward A.D. Mitchell, Christine Morrow, Jong Soo Park, Jan W. Pawlowski, Martha J. Powell, Daniel J. Richter, Sonja Rueckert, Lora Shadwick, Satoshi Shimano, Frederick W. Spiegel, Guifré Torruella, Noha Youssef, Vasily Zlatogursky, Qianqian Zhang   +46 more
wiley   +1 more source

Structural characterization of the Sel1‐like repeat protein LceB from Legionella pneumophila

Protein Science, Volume 33, Issue 3, March 2024.
Abstract Legionella are freshwater Gram‐negative bacteria that in their normal environment infect protozoa. However, this adaptation also allows Legionella to infect human alveolar macrophages and cause pneumonia. Central to Legionella pathogenesis are more than 330 secreted effectors, of which there are nine core effectors that are conserved in all ...
Tiffany V. Penner, Neil Lorente Cobo, Deepak T. Patel, Dhruvin H. Patel, Alexei Savchenko, Ann Karen C. Brassinga, Gerd Prehna   +6 more
wiley   +1 more source

Burkholderia pseudomallei Adaptation for Survival in Stressful Conditions

BioMed Research International, Volume 2018, Issue 1, 2018., 2018
Burkholderia pseudomallei is a Gram‐negative bacterium that causes melioidosis, which can be fatal in humans. Melioidosis is prevalent in the tropical regions of Southeast Asia and Northern Australia. Ecological data have shown that this bacterium can survive as a free‐living organism in environmental niches, such as soil and water, as well as a ...
Taksaon Duangurai, Nitaya Indrawattana, Pornpan Pumirat, Isabel Sá-Correia   +3 more
wiley   +1 more source

Identification of "Ryan Virus" as an amoeba of the genus Hartmannella. [PDF]

BMJ, 1967
A recent paper (Pereira, et al., 1966) reported the isolation in Britain of several strains of an antibiotic-resistant infective agent that caused unusual cytopathic effects when inoculated into cell cultures. The new agent was evidently recoverable from the respiratory tract in certain patients, mostly young children, with illnesses of varying ...
J A, Armstrong, M S, Pereira
openaire   +2 more sources

Grazing preferences of three species of amoebae on cyanobacteria and green algae

Journal of Eukaryotic Microbiology, Volume 71, Issue 2, March/April 2024.
Abstract Twenty species/isolates of cyanobacteria and green algae were isolated from cyanobacterial bloom samples in lakes associated with the upper Qu'Appelle River drainage system in southern Saskatchewan, Canada. Three amoebae species (Cochliopodium sp., Vannella sp.
Harold G. Weger, April K. Polasek, Derek M. Wright, Arun Damodaran, John Stavrinides   +4 more
wiley   +1 more source

Potentially Pathogenic Free-Living Amoebae in Contact Lenses of the Asymptomatic Contact Lens Wearers

Iranian Journal of Parasitology, 2014
Background: Free-living amoebae (FLA) including Acanthamoeba spp. and Hartmannella spp. are the causative agents of serious corneal infection especially within contact lens wearers. Thus contact lenses and their storage case could be a suitable niche for
Maryam Niyyati, Firoozeh Rahimi, Zohreh Lasejerdi, Mostafa Rezaeian   +3 more
doaj  

Molecular regulation of virulence in Legionella pneumophila

Molecular Microbiology, Volume 121, Issue 2, Page 167-195, February 2024.
Enabled by the Type IV Dot/Icm secretion system, the bacterial parasite Legionella pneumophila is evolutionarily adapted to dwell intracellularly in a multitude of eukaryotic hosts including humans. This review is focused on the regulatory mechanisms that govern the switch from bacterial replicative forms to environmentally resilient forms, in response
Christopher I. Graham, Teassa L. MacMartin, Teresa R. de Kievit, Ann Karen C. Brassinga   +3 more
wiley   +1 more source

Growth and Bacteriolytic Activity of a Soil Amoeba, Hartmannella glebae [PDF]

Journal of Bacteriology, 1968
A soil amoeba, Hartmannella glebae , could grow on a variety of gram-positive and gram-negative bacteria, although the rate of growth was faster in the presence of gram-negative bacteria. The amoeba, however, could not use yeasts, molds, or a green alga as a nutritional source.
openaire   +2 more sources