Panagrellus redivivus: failure to find evidence for the occurrence and biosynthesis of sialic acids.

  title={Panagrellus redivivus: failure to find evidence for the occurrence and biosynthesis of sialic acids.},
  author={Gerd Reuter and Jens Aumann and Urs P. Wyss and H B Jansson and Roland Schauer},
  journal={Experimental parasitology},
  volume={73 4},
Glycosylation changes in different developmental stages of Trichinella
The obtained results may contribute to a better understanding of the glycobiology of this parasitic nematode in relation to occupation of its intracellular niche and may serve as a protective shield on the surface of the parasite.
Adhesion to nematodes of conidia from the nematophagous fungus
Conidia of the endoparasitic nematophagous fungus Drechmeria coniospora adhere to the sensory organs of many nematode species but only two species were infected: Panagrellus vedivivus was infeted by all strains and Ditylenchus dipsaci was infected by four strains, although the conidia of all fungal strains adhered to all of the nematodes tested.
The conformity of this model with the present knowledge of nematode chemosensory physiology is discussed, and a model of vertebrate and insect olfaction is presented, based on an idea expressed by Dodd and Castellucci (1991).


The occurrence of N-acetyl- and N-glycoloylneuraminic acid in Trypanosoma cruzi.
After incubation of the parasites with either [3H]acetate or N-acetyl-[ 3H]mannosamine, no radioactivity was found in the sialic acids, thus leading to the suggestion that the parasites are unable to synthesize sIALic acids from their precursors.
Involvement of Sialic Acid in Nematode Chemotaxis and Infection by an Endoparasitic Nematophagous Fungus
The results show the importance of sialic acids in nematode chemotaxis and also in adhesion of conidia of M. coniospora, suggesting a link between attraction and adhesion in this system.
Characterization and Localization of Saccharides on the Head Region of Four Populations of the Potato Cyst Nematode Globodera rostochiensis and G. pallida.
TEM studies showed that N-acetylglucosamine and mannose/glucose were present on the exudate from the amphids of juveniles from the Ro population, and the Pa population differed from the other populations in the presence on all individuals of N- acetylgalactosamine or galactose and the absence of extensive residues of mannoses/ glucose.
Characterization of sialyl and galactosyl residues on the body wall of different plant parasitic nematodes.
The existence and nature of sugar residues on the cuticle surface of nematodes could contribute to an understanding of the specific recognition by phytophagous nem atodes of their host, and perhaps also of the virus transmission mechanism in those nematode which serve as vectors.
Fluorescent and Ferritin Labelling of Cuticle Surface Carbohydrates of Caenorhabditis elegans and Panagrellus redivivus.
Rhodamine-labelled peanut agglutinin and Limax flavus agglUTinin did not label nematodes of either species, whereas mannose-glucose residues were specifically localized in the head areas of both species.
The Endoparasitic Nematophagous Fungus Meria coniospora Infects Nematodes Specifically at the Chemosensory Organs
Conidia of the endoparasitic fungus Meria coniospora infected the bacterial-feeding nematode Panagrellus redivivus at specific sites, namely the mouth region and in male nematodes also in the tail, indicating the importance of sialic acids in the infection process.
Differential Adhesion and Infection of Nematodes by the Endoparasitic Fungus Meria coniospora (Deuteromycetes)
Previous findings indicating involvement of sialic acids localized on nematode cuticles in recognition of prey by M. coniospora are supported, and a delay in infection by 2 to 3 days is supported.
Histochemical studies on exudates of Heterodera schachtii (Nematoda: Heteroderidae) males
Tests on exudates, produced by males of the beet cyst nematode, Heterodera schachtii, showed that dyes more or less specific to proteins bound to amphidial, spicule and excretory poreExudates of the main chemoreceptors consist most likely of protein backbones to which oligosaccharide chains are coupled superficially.