title: Use of the Verrucomicrobia-specific probe EUB338-III and fluorescent in situ hybridization for detection of "Candidatus Xiphinematobacter" cells in nematode hosts.
abstract: Fluorescent in situ hybridization with a 16S rRNA probe specific for Verrucomicrobia was used to (i) confirm the division-level identity of and (ii) study the behavior of the obligate intracellular verrucomicrobium "Candidatus Xiphinematobacter" in its nematode hosts. Endosymbionts in the egg move to the pole where the gut primordium arises; hence, they populate the intestinal epithelia of juvenile worms. During the host's molt to adult female, the endosymbionts concentrate around the developing ovaries to occupy the ovarian wall. Some bacteria are enclosed in the ripening oocytes for vertical transmission. Verrucomicrobia in males stay outside the testes because the tiny spermatozoids are not suitable for transmission of cytoplasmic bacteria.
authors.affiliation: Laboratorium voor Microbiologie (Vakgroep Biochemie, Fysiologie en Microbiologie) Vakgroep Biologie, Ghent University, B-9000 Ghent, Belgium. tvdkerck@yahoo.se
authors.forename: Tom T M
authors.initials: TT
authors.lastname: Vandekerckhove
authors.forename: August
authors.initials: A
authors.lastname: Coomans
authors.forename: Karen
authors.initials: K
authors.lastname: Cornelis
authors.forename: Philippe
authors.initials: P
authors.lastname: Baert
authors.forename: Monique
authors.initials: M
authors.lastname: Gillis
mesh_terms: D000818:Animals; D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification*; D004269:DNA, Bacterial / Q000032:analysis*; D005456:Fluorescent Dyes / Q000378:metabolism; D017404:In Situ Hybridization, Fluorescence; D007211:Indoles / Q000378:metabolism; D009348:Nematoda / Q000382:microbiology*; D015345:Oligonucleotide Probes / Q000378:metabolism; D012336:RNA, Ribosomal, 16S / Q000032:analysis / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D005456:Fluorescent Dyes; D007211:Indoles; D015345:Oligonucleotide Probes; D012336:RNA, Ribosomal, 16S; C007293:DAPI