Evolution and Diversity of the Wild Rice Oryza officinalis Complex, across Continents, Genome Types, and Ploidy Levels

Autor: Shin Terashima, Hiroyasu Furuumi, Rod A. Wing, Matt Shenton, Nobuko Ohmido, Dario Copetti, David Kudrna, Hiroshi Ikawa, Tania Hernández-Hernández, Jianwei Zhang, Masaaki Kobayashi, Ken Ichi Nonomura, Atsushi Toyoda, Toshie Miyabayashi, Nori Kurata, Kentaro Yano, Asao Fujiyama, Takahiko Kubo, Hajime Ohyanagi, Masahiro Fujita, Yutaka Sato
Rok vydání: 2020
Předmět:
Zdroj: Genome Biology and Evolution
Genome Biology and Evolution, 12 (4)
ISSN: 1759-6653
Popis: The Oryza officinalis complex is the largest species group in Oryza, with more than nine species from four continents, and is a tertiary gene pool that can be exploited in breeding programs for the improvement of cultivated rice. Most diploid and tetraploid members of this group have a C genome. Using a new reference C genome for the diploid species O. officinalis, and draft genomes for two other C genome diploid species Oryza eichingeri and Oryza rhizomatis, we examine the influence of transposable elements on genome structure and provide a detailed phylogeny and evolutionary history of the Oryza C genomes. The O. officinalis genome is 1.6 times larger than the A genome of cultivated Oryza sativa, mostly due to proliferation of Gypsy type long-terminal repeat transposable elements, but overall syntenic relationships are maintained with other Oryza genomes (A, B, and F). Draft genome assemblies of the two other C genome diploid species, Oryza eichingeri and Oryza rhizomatis, and short-read resequencing of a series of other C genome species and accessions reveal that after the divergence of the C genome progenitor, there was still a substantial degree of variation within the C genome species through proliferation and loss of both DNA and long-terminal repeat transposable elements. We provide a detailed phylogeny and evolutionary history of the Oryza C genomes and a genomic resource for the exploitation of the Oryza tertiary gene pool.
Genome Biology and Evolution, 12 (4)
ISSN:1759-6653
Databáze: OpenAIRE