Analysis of the ITS1/ITS2 nuclear spacers and the secondary structure of 5.8S rRNA gene in endemic species Bellevalia sarmatica (Pall. ex Georgi) Woronow and related species of the subfamily scilloideae

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• 作者：A. A. Trifonova ; M. A. Filyushin ; E. Z. Kochieva…
• 刊名：Russian Journal of Genetics
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：52
• 期：5
• 页码：530-534
• 全文大小：273 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Human Genetics
  Animal Genetics and Genomics
  Microbial Genetics and Genomics
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3369
• 卷排序：52

文摘

Sequence variability of the ITS spacers and 5.8S rRNA gene was examined in 11 accessions of the subfamily Scilloideae, including seven accessions of rare and endangered species Bellevalia sarmatica from Volgograd region. The intraspecific polymorphism level of the examined ITS1–5.8S–ITS2 sequence of B. sarmatica accessions constituted 1.3%. The phylogenetic position of B. sarmatica within the genus Bellevalia was determined. It was demonstrated that B. sarmatica belonged to the section Nutantes, and the most closely related species were B. webbiana and B. dubia. Nucleotide substitutions in the 5.8S rRNA gene sequence of the analyzed Scilloideae accessions were identified and studied. The predicted secondary structure of 5.8S rRNA gene was constructed. It was demonstrated that in the examined accessions, mutations in the 5.8S rRNA gene were mainly localized in the third hairpin region and had no effect on the secondary structure of the 5.8S rRNA molecule.KeywordsScilloideaeBellevalia sarmaticarare and endangered speciesgenetic diversityITS spacers5.8S rRNA gene