Results 131 to 140 of about 14,034 (165)
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Endosymbionts and mitochondrial origins
Journal of Molecular Evolution, 1977The possibility is put forth that the mitochondrion did not originate from an endosymbiosis, 1-2 billion years ago, involving an aerobic bacterium. Rather, it arose by endosymbiosis in a much early, anaerobic period, and was initially a photosynthetic organelle, analogous to the modern chloroplast.
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Identification of Pelomyxa palustris Endosymbionts
Protist, 2017Pelomyxa palustris is a giant anaerobic/microaerobic amoeba, characterized by a number of exceptional cytological and physiological features, among them the presumed absence of energy producing organelles and the presence of endosymbiotic bacteria. These endosymbionts have been previously distinguished as: a large rectangular-shaped Gram-variable rod ...
Gabriel, Gutiérrez +4 more
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WOLBACHIA ENDOSYMBIONTS IN FLEAS (SIPHONAPTERA)
Journal of Parasitology, 2003Intracellular endosymbionts, Wolbachia spp., have been reported in many different orders of insects and in nematodes but not previously in fleas. This is the first conclusive report of Wolbachia spp. within members of the Siphonaptera. Using nested polymerase chain reaction (PCR) targeting of the 16S ribosomal RNA gene, we screened for Wolbachia spp ...
Christopher H, Gorham +2 more
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The Endosymbionts of Paramecium
CRC Critical Reviews in Microbiology, 1974AbstractProtozoan cells harbor many different types of endosymbionts. They can be viruses, bacteria, algae, fungi, or even defy classification in relation to free-living organisms. A general description of the types is available in Kirby1 and some are shown in Table 1.
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Fungal Endosymbionts of Seaweeds
2011Seaweeds are being studied for their role in supporting coastal marine life and nutrient cycling and for their bioactive metabolites. For a more complete understanding of seaweed communities, it is essential to obtain information about their interactions with various other components of their ecosystem.
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Bacterial Endosymbionts of Acanthamoeba sp.
The Journal of Parasitology, 1985Gimenez staining of presumably axenic Acanthamoeba sp., strain HN-3, showed rod-shaped cytoplasmic inclusions. Electron microscopy of thin sections of the amebae showed these to be bacilli which measured 1.3 to 3.3 microns by 0.22 to 0.33 micron. Their cell envelopes were those typical of gram-negative bacteria, surrounded by an electron-translucent ...
J, Hall, H, Voelz
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The Biological Bulletin, 2008
Siboglinid worms are a group of gutless marine annelids that are nutritionally dependent upon endosymbiotic bacteria. Four major groups of siboglinids are known - vestimentiferans, moniliferans, Osedax spp. and frenulates. Although endosymbionts of vestimentiferans and Osedax spp.
Daniel J, Thornhill +5 more
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Siboglinid worms are a group of gutless marine annelids that are nutritionally dependent upon endosymbiotic bacteria. Four major groups of siboglinids are known - vestimentiferans, moniliferans, Osedax spp. and frenulates. Although endosymbionts of vestimentiferans and Osedax spp.
Daniel J, Thornhill +5 more
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1997
Publisher Summary The first information on the symbionts of Coccidae is obtained as a by-product of an anatomical study of Coccus hesperidum L., it is reported the presence of bodies, around 4μm long and probably parasitic, in the haemolymph of this common soft scale.
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Publisher Summary The first information on the symbionts of Coccidae is obtained as a by-product of an anatomical study of Coccus hesperidum L., it is reported the presence of bodies, around 4μm long and probably parasitic, in the haemolymph of this common soft scale.
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The Endosymbiont Hypothesis Revisited
1992Publisher Summary This chapter highlights endosymbiont hypothesis. All contemporary genomes (including those of plastids and mitochondria) ultimately derive from a single genome—the genome of a single, presumably cellular, entity which was the ancestor of all surviving forms of live.
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Wolbachia.Bacterial Endosymbionts of Filarial Nematodes
2005Filarial nematodes are important helminth parasites of the tropics and a leading cause of global disability. They include species responsible for onchocerciasis, lymphatic filariasis and dirofilariasis. A unique feature of these nematodes is their dependency upon a symbiotic intracellular bacterium, Wolbachia, which is essential for normal development ...
M. J. Taylor, C. Bandi, A. Hoerauf
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