Ribosomal DNA

A North American origin for the silverswords clearly emerged from the application of DNA-sequence techniques to members of the alliance and representative Californian species (Baldwin et al., 1990, 1991). The conclusions from these studies, based on chloroplast restriction site analysis were subsequently corroborated by ITS nuclear ribosomal DNA studies. A comprehensive review of these studies can be found in Carlquist et al. (2003). 

Pillay, M. and Kenny, S. T. 1996. Structure and inheritance of ribosomal DNA variants in cultivated and wild hop Humulus lupulus L. Theor. Appl. Gen. 93 333-340. 

Wright, S. D., Yong, C. G., Dawson, J. W., Whittaker, D. J. and Gardner, R. C. 2000. Riding the ice age El Nino Pacific biogeography and evolution of Metrosideros subg. Metrosideros (Myrta-ceae) inferred from nuclear ribosomal DNA. Proc. NatT. Acad. Sci., U.S.A. 97 4118 123. 

Weisberg WG, SM Barns, DA Pelletier, DJ Lane (1991) 16S ribosomal DNA amplification for phylogenetic study. J Bacteriol 173 697-703. 

M. A Selosse, G. Costa, C. Dibattista, F. Letacon, and F. Martin, Meiotic segregation and recombination of the intergenic spacer of the ribosomal DNA in the ectomycorrhizal basidiomycete Laccaria hicolor. Curr. Gen. 30 332 (1996). 

R. Sanders, M. Alt, K, Groppe, T. Boiler, and A. Wiemken, Identification of ribosomal DNA polymorphisms among and within spores of the Glomules application to studies on the genetic diversity of arbuscular mycorrhizal fungal communities. New Phytol. /30 419 (1995). 

G. A. Kowalchuk, J. R. Stephen, W. DeBoer, J. 1. Prosser, T. M. Embley, and J. W. Woldendorp, Analysis of ammonia-oxidizing bacteria of the beta subdivision of the class Proteobacteria in coastal sand dunes by denaturing gradient gel electrophoresis and sequencing of PCR-amplified I6S ribosomal DNA fragments. Appl. Environ. Microbiol. 6.1 1489 (1997). 

Infrared spectroscopy, including FTIR Polyacrylamide gel electrophoresis (PAGE) Amplified ribosomal DNA restriction analysis (ARDRA)... 

Campbell, A.J.D., Gasser, R.B. and Chilton, N.B. (1995) Differences in a ribosomal DNA sequence of Strongylus species allows identification of single eggs. InternationalJournal for Parasitology 25, 359-365. 

Gasser, R.B., Stewart, L.E. and Speare, R. (1996) Genetic markers in ribosomal DNA for hookworm identification. Acta Tropica 62,15-21. 

Iwahori, H., Tsuda, K., Kanzaki, N., Izui, K. and Futai, K. (1998) PCR-RFLP and sequencing analysis of ribosomal DNA of Bursaphelenchus nematodes related to pine wilt disease. Fundamental and Applied Nematology 21, 655-666. 

Nadler, S.A. and Hudspeth, D.S.S. (1998) Ribosomal DNA and phylogeny of the Ascaridoidea (Nemata Secernentea) implications for morphological evolution and classification. Molecular Phylogenetics and Evolution 10, 221-236. 

Newton, L.A., Chilton, N.B., Beveridge, I. and Gasser, R.B. (1998) Systematic relationships of some members of the genera Oesophagostomum and Chabertia (Nematoda Chabertiidae) based on ribosomal DNA sequence data. InternationalJournal for Parasitology 28, 1781-1789. 

Epe C., von Samson-Himmelstjema, G. and Schnieder, T. (1997) Differences in a ribosomal DNA sequence of lungworm species (Nematoda Dictyocaulidae) from fallow deer, catde, sheep and donkeys. Research in Veterinary Science 62,... 

Gasser, R, Nansen, P. and Guldberg, P. (1996a) Fingerprinting sequence variation in ribosomal DNA of parasites by DGGE. Molecular and Cellular Probes 10, 99-105. 

Hoste, H., Gasser, R.B., Chilton, N.B., Mallet, S. and Beveridge, I. (1993) Lack of intraspecific variation in the second internal transcribed spacer (ITS-2) of Trichostrongylus colubriformis ribosomal DNA InternationalJournal for Parasitology 23, 1069-1071. 

Kane, R.A and Rollinson, D. (1994) Repetitive sequences in the ribosomal DNA internal transcribed spacer of Schistosoma haematobium, Schistosoma intercalatum and Schistosoma matthei. Molecular and Biochemical Parasitology 63, 153—156. 

Leignel, V., Humbert, J.F. and Elard, L. (1997) Study by ribosomal DNA ITS2 sequencing and RAPD analysis on the systematics of four Metastrongylus species (Nematoda Metastrongyloidea). Journal of Parasitology 83, 606-611. 

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