2010年7月
The evolution of the hexaploid grass Zingeria kochii (Mez) Tzvel. (2n=12) was accompanied by complex hybridization and uniparental loss of ribosomal DNA
MOLECULAR PHYLOGENETICS AND EVOLUTION
- 巻
- 56
- 号
- 1
- 開始ページ
- 146
- 終了ページ
- 155
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.ympev.2010.01.003
- 出版者・発行元
- ACADEMIC PRESS INC ELSEVIER SCIENCE
In the grass tribe Poeae a small group of taxa occur with an exceptionally low chromosome number of 2n = 2x = 4 belonging to the closely related genera Colpodium and Zingeria. To understand the formation of polyploids in this group we analyzed the evolution of allohexaploid Zingeria kochii (2n = 12) and its presumable ancestral species. Genomic in situ hybridization demonstrated that Z. kochii evolved from an interspecific hybrid involving species closely related to contemporary Z. biebersteiniana (2n = 4) and Colpodium versicolor (2n = 4) and a third unknown species. Following allopolyploidization of Z. kochii the biebersteiniana-like parental chromosomes underwent loss of ribosomal DNA. No interlocus homogenization of 45S rDNA took place in Z. kochii and phylogenetic analysis showed that C versicolor contributed its genome to Z. kochii relatively recently. In situ hybridization was particularly effective in understanding the allopolyploid evolution in Zingeria while the analysis of ITS sequences alone would have resulted in a wrong interpretation of the allopolyploid history of the genus. (C) 2010 Elsevier Inc. All rights reserved.
- リンク情報
-
- DOI
- https://doi.org/10.1016/j.ympev.2010.01.003
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201002238133881386
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/20060916
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000278589500013&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1016/j.ympev.2010.01.003
- ISSN : 1055-7903
- J-Global ID : 201002238133881386
- PubMed ID : 20060916
- Web of Science ID : WOS:000278589500013