Abstract
The 23S rRNA genes (rrl genes) of some strains of certain species of the spirochete genus Leptospira carry an intervening sequence (IVS) of 485 to 759 bases flanked by terminal inverted repeat and encoding an open reading frame for a putative protein of over 120 amino acids. The structure and the sporadic distribution of the IVS suggest that it might be a mobile element that can be horizontally transferred within or between species. Phylogenetic hypotheses based on the sequences for six IVS open reading frames from various species were compared with hypotheses constructed by using DNA sequences from the 16S rRNA gene (rrs), which is not closely linked to rrl in this genus. The predicted phylogenies for the IVS and rrs differed in a major respect: one strain that claded with L. weillii in the tree based on the rrs data claded with L. noguchi in the tree based on the IVS data. Neither set of data supported a tree in which this strain was constrained to be in the same clade as was supported by the other set of data. This result indicates a probable horizontal transfer of the IVS from a recent ancestor of L. noguchi to a recent ancestor of one of the L. weillii strains. This observation is the first indication of horizontal transfer of elements encoded on the chromosomes of spirochetes.
Full text
PDF





Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Burgin A. B., Parodos K., Lane D. J., Pace N. R. The excision of intervening sequences from Salmonella 23S ribosomal RNA. Cell. 1990 Feb 9;60(3):405–414. doi: 10.1016/0092-8674(90)90592-3. [DOI] [PubMed] [Google Scholar]
- Burke J. M., Breitenberger C., Heckman J. E., Dujon B., RajBhandary U. L. Cytochrome b gene of Neurospora crassa mitochondria. Partial sequence and location of introns at sites different from those in Saccharomyces cerevisiae and Aspergillus nidulans. J Biol Chem. 1984 Jan 10;259(1):504–511. [PubMed] [Google Scholar]
- Dujon B. Group I introns as mobile genetic elements: facts and mechanistic speculations--a review. Gene. 1989 Oct 15;82(1):91–114. doi: 10.1016/0378-1119(89)90034-6. [DOI] [PubMed] [Google Scholar]
- Dykhuizen D. E., Polin D. S., Dunn J. J., Wilske B., Preac-Mursic V., Dattwyler R. J., Luft B. J. Borrelia burgdorferi is clonal: implications for taxonomy and vaccine development. Proc Natl Acad Sci U S A. 1993 Nov 1;90(21):10163–10167. doi: 10.1073/pnas.90.21.10163. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Felsenstein J. Phylogenies from molecular sequences: inference and reliability. Annu Rev Genet. 1988;22:521–565. doi: 10.1146/annurev.ge.22.120188.002513. [DOI] [PubMed] [Google Scholar]
- Fukunaga M., Horie I., Mifuchi I. Nucleotide sequence of a 23S ribosomal RNA gene from Leptospira interrogans serovar canicola strain Moulton. Nucleic Acids Res. 1989 Mar 11;17(5):2123–2123. doi: 10.1093/nar/17.5.2123. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fukunaga M., Horie I., Okuzako N., Mifuchi I. Nucleotide sequence of a 16S rRNA gene for Leptospira interrogans serovar canicola strain Moulton. Nucleic Acids Res. 1990 Jan 25;18(2):366–366. doi: 10.1093/nar/18.2.366. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fukunaga M., Mifuchi I. Unique organization of Leptospira interrogans rRNA genes. J Bacteriol. 1989 Nov;171(11):5763–5767. doi: 10.1128/jb.171.11.5763-5767.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gilbert H. J., Hazlewood G. P., Laurie J. I., Orpin C. G., Xue G. P. Homologous catalytic domains in a rumen fungal xylanase: evidence for gene duplication and prokaryotic origin. Mol Microbiol. 1992 Aug;6(15):2065–2072. doi: 10.1111/j.1365-2958.1992.tb01379.x. [DOI] [PubMed] [Google Scholar]
- Haraszthy V. I., Sunday G. J., Bobek L. A., Motley T. S., Preus H., Zambon J. J. Identification and analysis of the gap region in the 23S ribosomal RNA from Actinobacillus actinomycetemcomitans. J Dent Res. 1992 Sep;71(9):1561–1568. doi: 10.1177/00220345920710090401. [DOI] [PubMed] [Google Scholar]
- Hinnebusch J., Barbour A. G. Linear plasmids of Borrelia burgdorferi have a telomeric structure and sequence similar to those of a eukaryotic virus. J Bacteriol. 1991 Nov;173(22):7233–7239. doi: 10.1128/jb.173.22.7233-7239.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hookey J. V., Bryden J., Gatehouse L. The use of 16S rDNA sequence analysis to investigate the phylogeny of Leptospiraceae and related spirochaetes. J Gen Microbiol. 1993 Nov;139(11):2585–2590. doi: 10.1099/00221287-139-11-2585. [DOI] [PubMed] [Google Scholar]
- Krawiec S., Riley M. Organization of the bacterial chromosome. Microbiol Rev. 1990 Dec;54(4):502–539. doi: 10.1128/mr.54.4.502-539.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lambowitz A. M. Infectious introns. Cell. 1989 Feb 10;56(3):323–326. doi: 10.1016/0092-8674(89)90232-8. [DOI] [PubMed] [Google Scholar]
- Lang B. F. The mitochondrial genome of the fission yeast Schizosaccharomyces pombe: highly homologous introns are inserted at the same position of the otherwise less conserved cox1 genes in Schizosaccharomyces pombe and Aspergillus nidulans. EMBO J. 1984 Sep;3(9):2129–2136. doi: 10.1002/j.1460-2075.1984.tb02102.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Michel F., Cummings D. J. Analysis of class I introns in a mitochondrial plasmid associated with senescence of Podospora anserina reveals extraordinary resemblance to the Tetrahymena ribosomal intron. Curr Genet. 1985;10(1):69–79. doi: 10.1007/BF00418495. [DOI] [PubMed] [Google Scholar]
- Michel F., Dujon B. Genetic exchanges between bacteriophage T4 and filamentous fungi? Cell. 1986 Aug 1;46(3):323–323. doi: 10.1016/0092-8674(86)90651-3. [DOI] [PubMed] [Google Scholar]
- Paster B. J., Dewhirst F. E., Weisburg W. G., Tordoff L. A., Fraser G. J., Hespell R. B., Stanton T. B., Zablen L., Mandelco L., Woese C. R. Phylogenetic analysis of the spirochetes. J Bacteriol. 1991 Oct;173(19):6101–6109. doi: 10.1128/jb.173.19.6101-6109.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pérolat P., Grimont F., Regnault B., Grimont P. A., Fournié E., Thevenet H., Baranton G. rRNA gene restriction patterns of Leptospira: a molecular typing system. Res Microbiol. 1990 Feb;141(2):159–171. doi: 10.1016/0923-2508(90)90025-l. [DOI] [PubMed] [Google Scholar]
- Ralph D., McClelland M. Intervening sequence with conserved open reading frame in eubacterial 23S rRNA genes. Proc Natl Acad Sci U S A. 1993 Jul 15;90(14):6864–6868. doi: 10.1073/pnas.90.14.6864. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ralph D., McClelland M., Welsh J., Baranton G., Perolat P. Leptospira species categorized by arbitrarily primed polymerase chain reaction (PCR) and by mapped restriction polymorphisms in PCR-amplified rRNA genes. J Bacteriol. 1993 Feb;175(4):973–981. doi: 10.1128/jb.175.4.973-981.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ramadass P., Jarvis B. D., Corner R. J., Penny D., Marshall R. B. Genetic characterization of pathogenic Leptospira species by DNA hybridization. Int J Syst Bacteriol. 1992 Apr;42(2):215–219. doi: 10.1099/00207713-42-2-215. [DOI] [PubMed] [Google Scholar]
- Skurnik M., Toivanen P. Intervening sequences (IVSs) in the 23S ribosomal RNA genes of pathogenic Yersinia enterocolitica strains. The IVSs in Y. enterocolitica and Salmonella typhimurium have a common origin. Mol Microbiol. 1991 Mar;5(3):585–593. doi: 10.1111/j.1365-2958.1991.tb00729.x. [DOI] [PubMed] [Google Scholar]
- Smith J. M., Dowson C. G., Spratt B. G. Localized sex in bacteria. Nature. 1991 Jan 3;349(6304):29–31. doi: 10.1038/349029a0. [DOI] [PubMed] [Google Scholar]
- Syvanen M. Molecular clocks and evolutionary relationships: possible distortions due to horizontal gene flow. J Mol Evol. 1987;26(1-2):16–23. doi: 10.1007/BF02111278. [DOI] [PubMed] [Google Scholar]
- Xiong Y., Eickbush T. H. Origin and evolution of retroelements based upon their reverse transcriptase sequences. EMBO J. 1990 Oct;9(10):3353–3362. doi: 10.1002/j.1460-2075.1990.tb07536.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zimmer M., Welser F., Oraler G., Wolf K. Distribution of mitochondrial introns in the species Schizosaccharomyces pombe and the origin of the group II intron in the gene encoding apocytochrome b. Curr Genet. 1987;12(5):329–336. doi: 10.1007/BF00405755. [DOI] [PubMed] [Google Scholar]
- ter Huurne A. A., van Houten M., Muir S., Kusters J. G., van der Zeijst B. A., Gaastra W. Inactivation of a Serpula (Treponema) hyodysenteriae hemolysin gene by homologous recombination: importance of this hemolysin in pathogenesis in mice. FEMS Microbiol Lett. 1992 Apr 1;71(1):109–113. doi: 10.1016/0378-1097(92)90550-8. [DOI] [PubMed] [Google Scholar]