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Acta Veterinaria Hungarica
Authors: HongBin Yan, XinWen Bo, Youyu Liu, Zhongzi Lou, XingWei Ni, WanGui Shi, Fang Zhan, HongKean Ooi, and WanZhong Jia

): Amplification of ribosomal DNA of Anoplocephalidae: Anoplocephala perfoliata diagnosis by PCR as a possible alternative to coprological methods. Vet. Parasitol. 124 , 205–215. Samson-Himmelstjerna G

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. N., Maluszynska, J. (2001) Ribosomal DNA is an effective marker of Brassica chromosomes. Theor. Appl. Genet. 103 , 486–490. Maluszynska J Ribosomal DNA is an effective marker of

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Mitchell, T. G., White, T. J., Taylor, J. W. (1992) Comparison of 5.8S ribosomal DNA sequences among the basidiomycetous yeast genera Cystofilobasidium, Filobasidium and Filobasidiella. J. Med. Vet. Mycol. 30 , 207

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Hibbett, D. S., Pine, E. M., Langer, E., Langer, G., Donoghue, M. J.: Evolution of gilled mushrooms and puffballs inferred from ribosomal DNA sequences. Proc Natl Acad Sci USA 94 , 12002-12006 (1997

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147 150 Baldwin, B. G., Sanderson, M. J., Porter, J. M., Wojciechowski, M. F., Campbell, C. S., Donoghue, M. J. (1995) The ITS region of nuclear ribosomal DNA: A valuable source

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Saghai-Maroof, M. A., Soliman, K. M., Jorgensen, R. A. and Allard, R. W. (1984): Ribosomal DNA spacer length polymorphism in barley: Mendelian inheritance, chromosomal location and population dynamics. Prot. Natl. Acad. Sci. 81, 8014

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Acta Botanica Hungarica
Authors: S. Y. Kondratyuk, I. Kärnefelt, A. Thell, J. A. Elix, J. Kim, A. S. Kondratiuk, and J.-S. Hur

Associates, Sunderland, Massachusetts. Vilgalys , R. and Hester , M. ( 1990 ): Rapid genetic identification and mapping of enzymatically amplified ribosomal DNA from several

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Recently, comprehensive molecular phylogenetic analyses of ribosomal DNA sequences have led to important advances in understanding the evolution of powdery mildew fungi (Erysiphales). These results have triggered major changes in the identification, taxonomy, and, thus, nomenclature of this group of plant pathogens. This paper reviews the recent nomenclatural changes of the Erysiphales and provides an up-to-date list of all the powdery mildew fungi reported from Hungary using the new names of the fungal taxa.

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Although Thrips tabaci is a well-known vector of Tomato spotted wilt virus (TSWV) it does not belong to the spreaders of this dangerous pathogen in North America. The possible explanation of the differences in its vector efficiency in Europe and in North America is rooted in the fact that out of the two subspecies of T. tabaci, i.e. T. tabaci tabaci and T. tabaci communis only the specimens of the latter were introduced from Europe into North America. To support our hypothesis we have used a molecular marker that detects intraspecific ribosomal DNA sequence variations between the two subspecies of T. tabaci.

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In the last two decades the application of molecular techniques has had a major impact on the classification of yeasts. The nuclear DNA relatedness has become the basis of species delineation. Molecular fingerprinting methods such as analysis of restriction fragment length polymorphisms, random amplified polymorphic DNA, PCR-amplified sequences and fragments, pulsed field gel electrophoresis of chromosome DNA and others allow intraspecies differentiation and typing. The most far reaching method has been the sequencing of various parts of ribosomal DNA that has made for the first time possible to assess the phylogenetic relationships among yeasts at different taxonomic levels. Based on the molecular data obtained so far several changes have been introduced in the classification of yeasts, however, substantial restructuring of current taxonomic schemes with the consequence of numerous nomenclatural changes must await further studies.

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