Structural variation and rates of genome evolution in the grass family seen through comparison of sequences of genomes greatly differing in size

The Plant Journal : for Cell and Molecular Biology
J DvořákPatrick E McGuire

Abstract

Homology was searched with genes annotated in the Aegilops tauschii pseudomolecules against genes annotated in the pseudomolecules of tetraploid wild emmer wheat, Brachypodium distachyon, sorghum and rice. Similar searches were performed with genes annotated in the rice pseudomolecules. Matrices of collinear genes and rearrangements in their order were constructed. Optical BioNano genome maps were constructed and used to validate rearrangements unique to the wild emmer and Ae. tauschii genomes. Most common rearrangements were short paracentric inversions and short intrachromosomal translocations. Intrachromosomal translocations outnumbered segmental intrachromosomal duplications. The densities of paracentric inversion lengths were approximated by exponential distributions in all six genomes. Densities of collinear genes along the Ae. tauschii chromosomes were highly correlated with meiotic recombination rates but those of rearrangements were not, suggesting different causes of the erosion of gene collinearity and evolution of major chromosome rearrangements. Frequent rearrangements sharing breakpoints suggested that chromosomes have been rearranged recurrently at some sites. The distal 4 Mb of the short arms of rice chromosomes...Continue Reading

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Citations

Jan 13, 2019·The Plant Journal : for Cell and Molecular Biology·Alisdair R Fernie, Jose Gutierrez-Marcos
Sep 19, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Hao LiJan Dvorak
Jun 5, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Juliya AbbasiJan Dvorak
Aug 31, 2018·Genetics·Xiongtao DaiHans-Georg Müller
Aug 25, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jan DvorakPatrick E McGuire
Apr 8, 2020·Frontiers in Plant Science·Kaichi Huang, Loren H Rieseberg
Oct 1, 2020·The Plant Journal : for Cell and Molecular Biology·Mengmeng JiangM Brian Traw
Mar 1, 2019·G3 : Genes - Genomes - Genetics·Tingting ZhuMing-Cheng Luo
Mar 1, 2019·G3 : Genes - Genomes - Genetics·Jiale XuJan Dvorak
Apr 25, 2021·The Plant Journal : for Cell and Molecular Biology·Tingting ZhuMing-Cheng Luo
Apr 19, 2021·The Plant Journal : for Cell and Molecular Biology·Jian LingBingyan Xie
Oct 19, 2021·The Plant Journal : for Cell and Molecular Biology·Soheila BayatTerezie Mandáková

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