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Multiple horizontal transfers of nuclear ribosomal genes between phylogenetically distinct grass lineages
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SYSNO ASEP 0508212 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Multiple horizontal transfers of nuclear ribosomal genes between phylogenetically distinct grass lineages Author(s) Mahelka, V. (CZ)
Krak, K. (CZ)
Kopecký, D. (CZ)
Fehrer, J. (CZ)
Šafář, J. (CZ)
Bartoš, J. (CZ)
Hobza, Roman (BFU-R) RID, ORCID
Blavet, N. (CZ)
Blattner, F. (DE)Number of authors 9 Source Title Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences - ISSN 0027-8424
Roč. 114, č. 7 (2017), s. 1726-1731Number of pages 6 s. Publication form Print - P Language eng - English Country US - United States Keywords parasitic plant ; hordeum poaceae ; transposable elements ; evolution Subject RIV EF - Botanics OECD category Plant sciences, botany Method of publishing Open access Institutional support BFU-R - RVO:68081707 UT WOS 000393989300085 DOI 10.1073/pnas.1613375114 Annotation The movement of nuclear DNA from one vascular plant species to another in the absence of fertilization is thought to be rare. Here, nonnative rRNA gene [ribosomal DNA (rDNA)] copies were identified in a set of 16 diploid barley (Hordeum) species, their origin was traceable via their internal transcribed spacer (ITS) sequence to five distinct Panicoideae genera, a lineage that split from the Pooideae about 60 Mya. Phylogenetic, cytogenetic, and genomic analyses implied that the nonnative sequences were acquired between 1 and 5 Mya after a series of multiple events, with the result that some current Hordeum sp. individuals harbor up to five different panicoid rDNA units in addition to the native Hordeum rDNA copies. There was no evidence that any of the nonnative rDNA units were transcribed, some showed indications of having been silenced via pseudogenization. A single copy of a Panicum sp. rDNA unit present in H. bogdanii had been interrupted by a native transposable element and was surrounded by about 70 kbp of mostly noncoding sequence of panicoid origin. The data suggest that horizontal gene transfer between vascular plants is not a rare event, that it is not necessarily restricted to one or a few genes only, and that it can be selectively neutral. Workplace Institute of Biophysics Contact Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244 Year of Publishing 2020 Electronic address https://www.pnas.org/content/pnas/114/7/1726.full.pdf
Number of the records: 1