Results 31 to 40 of about 7,672 (207)

Physiological responses of Tetrahymena pyriformis to copper, zinc, cycloheximide and Triton X-100 [PDF]

open access: yes, 1999
Protozoa, and particularly ciliates, are essential in aerobic purification processes of wastewaters and have proved to be very sensitive to environmental changes. The physiological response of the ciliate Tetrahymena pyriformis was assessed in terms of
Lima, Nelson, Mota, M., Nicolau, Ana
core   +2 more sources

Modeling and insights into the structural basis of chemical acute aquatic toxicity

open access: yesEcotoxicology and Environmental Safety, 2022
It has become a top global regulatory priority to prevent and control pollution from the release of synthetic chemicals, which continues to affect the aquatic communities. In the past decades, computational tools were largely used to significantly reduce
Ruiqiu Zhang   +5 more
doaj   +1 more source

Effect of different toxic compounds on ATP content and acid phosphatase activity in axenic cultures of Tetrahymena pyriformis [PDF]

open access: yes, 2004
The sensitivity of protozoa, and particularly ciliated protozoa, to environmental changes suggested a study on the physiological responses arising from exposure to toxic compounds.
Akers   +30 more
core   +1 more source

Continuous Monoxenic Culture of Tetrahymena pyriformis [PDF]

open access: yesJournal of General Microbiology, 1971
SUMMARY: A two-stage continuous culture apparatus was used to study the growth and feeding kinetics of the ciliated protozoon Tetrahymena pyriformis GL. The food organism, the bacterium Klebsiella aerogenes, was grown in the first stage using sucrose as the limiting nutrient to establish steady-state populations.
C R, Curds, A, Cockburn
openaire   +2 more sources

A comparative study using a fluorescence-based and a direct-count assay to determine cytotoxicity in Tetrahymena pyriformis [PDF]

open access: yes, 2002
A novel cellular cytotoxicity assay using two fluorescent dyes was developed as an alternative method to the standard direct count of viable protozoa under light microscopy.
Bogaerts   +28 more
core   +1 more source

Ansamitocin-induced Synchrony in Tetrahymena pyriformis [PDF]

open access: yesMicrobiology, 1980
Ansamitocins inhibited cell division in Tetrahymena pyriformis W at low concentrations and caused cells to become more rounded. Exposure to ansamitocins for 5 h or more resulted in a burst of synchronous division at 100 min after removal of the antibiotics with a maximum division index of 70%.
S, Tanida, E, Higashide, M, Yoneda
openaire   +2 more sources

Parallel evolution of histophagy in ciliates of the genus Tetrahymena

open access: yesBMC Evolutionary Biology, 2001
Background Species of Tetrahymena were grouped into three complexes based on morphological and life history traits: the pyriformis complex of microstomatous forms; the patula complex of microstome-macrostome transformers; and the rostrata complex of ...
Jerome Cheryl A   +3 more
doaj   +1 more source

Microbial Grazers May Aid in Controlling Infections Caused by the Aquatic Zoosporic Fungus Batrachochytrium dendrobatidis

open access: yesFrontiers in Microbiology, 2021
Free-living eukaryotic microbes may reduce animal diseases. We evaluated the dynamics by which micrograzers (primarily protozoa) apply top-down control on the chytrid Batrachochytrium dendrobatidis (Bd) a devastating, panzootic pathogen of amphibians ...
Hazel N. Farthing   +9 more
doaj   +1 more source

Biogenic amines at a low level of evolution: Production, functions and regulation in the unicellular Tetrahymena [PDF]

open access: yes, 2015
The unicellular eukaryote Tetrahymena synthesize, store and secrete biogenic amines (histamine, serotonin, epinephrine, dopamine, melatonin) and also can take up amines from the milieu.
Csaba, György
core   +1 more source

Cigarette butts as a source of urban ecosystem pollution [PDF]

open access: yesE3S Web of Conferences
Cigarette butts are the most common form of litter. About 4.5 trillion cigarette butts are thrown away worldwide each year, polluting various ecosystems. Many chemicals are used in the process of growing tobacco and producing cigarettes.
Lykov Igor N.
doaj   +1 more source

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