Results 31 to 40 of about 32,743 (214)

Steroid Requirements of Paramecium aurelia [PDF]

Journal of General Microbiology, 1955
SUMMARY: Paramecium aurelia, var. 4, stock 51.7 (s) requires a steroid as a growth factor; β- and γ-sitosterol, fucosterol, brassicasterol, stigmastcrol and δ4,22-stigmastadienone are active in supporting its growth. Esterification of the 3-hydroxyl group decreases the activity.
R L, CONNER, W J, VAN WAGTENDONK
openaire   +2 more sources

Kappa and other endosymbionts in Paramecium aurelia [PDF]

Bacteriological Reviews, 1974
J R, Preer, L B, Preer, A, Jurand
openaire   +3 more sources

The planktonic freshwater ciliate Balanion planctonicum (Ciliophora, Prostomatea): A cryptic species complex or a "complex species"? [PDF]

J Eukaryot Microbiol
Abstract The globally distributed ciliate Balanion planctonicum is a primary consumer of phytoplankton spring blooms. Due to its small size (~20 μm), identification and quantification by molecular tools is preferable as an alternative to the laborious counting of specimen in quantitative protargol stains. However, previous sequencing of the 18S rDNA V9
Schalch-Schuler M, Bassin B, Andrei AS, Dirren-Pitsch G, Waller K, Hofer C, Pernthaler J, Posch T.   +7 more
europepmc   +2 more sources

Food niches of planktonic rotifers: Diversification and implications

Limnology and Oceanography, Volume 67, Issue 10, Page 2218-2251, October 2022., 2022
Abstract The diverse diets of common planktonic rotifers are described in detail from field and laboratory observations and experiments. Also considered are methodological approaches, rotifer feeding mechanisms, and the availability in natural waters of less well‐known food items (detritus, picoplankton, protozoans).
John J. Gilbert
wiley   +1 more source

Ecosystem Size Mediates the Effects of Resource Flows on Species Diversity and Ecosystem Function at Different Scales. [PDF]

Ecol Evol
Ecosystem size and resource flows are key factors driving biodiversity and ecosystem function. However, the question of whether and how these drivers interact has been largely overlooked. Here, we show how ecosystem size asymmetry affects biodiversity and function of two‐patch meta‐ecosystems connected through flows of nonliving resources using a ...
Giacomuzzo E, Peller T, Gounand I, Altermatt F.   +3 more
europepmc   +2 more sources

Bacterial symbiosis in ciliates (Alveolata, Ciliophora): Roads traveled and those still to be taken

Journal of Eukaryotic Microbiology, Volume 69, Issue 5, September/October 2022., 2022
Abstract The diversity of prokaryotic symbionts in Ciliophora and other protists is fascinatingly rich; they may even include some potentially pathogenic bacteria. In this review, we summarize currently available data on biodiversity and some morphological and biological peculiarities of prokaryotic symbionts mainly within the genera Paramecium and ...
Sergei I. Fokin, Valentina Serra
wiley   +1 more source

Paramecium epigenetics in development and proliferation

Journal of Eukaryotic Microbiology, Volume 69, Issue 5, September/October 2022., 2022
Abstract The term epigenetics is used for any layer of genetic information aside from the DNA base‐sequence information. Mammalian epigenetic research increased our understanding of chromatin dynamics in terms of cytosine methylation and histone modification during differentiation, aging, and disease.
Franziska Drews, Jens Boenigk, Martin Simon   +2 more
wiley   +1 more source

Improved methods and resources for paramecium genomics: transcription units, gene annotation and gene expression

BMC Genomics, 2017
Background The 15 sibling species of the Paramecium aurelia cryptic species complex emerged after a whole genome duplication that occurred tens of millions of years ago.
Olivier Arnaiz, Erwin Van Dijk, Mireille Bétermier, Maoussi Lhuillier-Akakpo, Augustin de Vanssay, Sandra Duharcourt, Erika Sallet, Jérôme Gouzy, Linda Sperling   +8 more
doaj   +1 more source

Evolutionary dynamics of a conserved sequence motif in the ribosomal genes of the ciliate Paramecium

BMC Evolutionary Biology, 2010
Background In protozoa, the identification of preserved motifs by comparative genomics is often impeded by difficulties to generate reliable alignments for non-coding sequences.
Lynch Michael, Catania Francesco
doaj   +1 more source

Object transportation system mimicking the cilia of Paramecium aurelia by using light-controllable crystal bending behavior of a photochromic diarylethene.

Angewandte Chemie, 2019
The design of an object transportation system exploiting the bending behavior of surface assembled diarylethene crystals is reported. This system can transport polystyrene beads on a photo-actuated smart surface to a desired area by changing the light ...
Ryo Nishimura, Ayako Fujimoto, N. Yasuda, M. Morimoto, Tatsuhiro Nagasaka, Hikaru Sotome, S. Ito, H. Miyasaka, S. Yokojima, Shinichiro Nakamura, B. Feringa, K. Uchida   +11 more
semanticscholar   +1 more source