Complete chloroplast and ribosomal sequences for 30 accessions elucidate evolution of Oryza AA genome species

Date 2015/11/2 10:43:17 | Topic: 2015

Kyunghee Kim, Sang-Choon Lee, Junki Lee, Yeisoo Yu, Kiwoung Yang, Beom-Soon Choi, Hee-Jong Koh, Nomar Espinosa Waminal, Hong-Il Choi, Nam-Hoon Kim, Woojong Jang, Hyun-Seung Park, Jonghoon Lee, Hyun Oh Lee, Ho Jun Joh, Hyeon Ju Lee, Jee Young Park, Sampath Perumal, Murukarthick Jayakodi, Yun Sun Lee, Backki Kim, Dario Copetti, Soonok Kim, Sunggil Kim, Ki-Byung Lim, Young-Dong Kim, Jungho Lee, Kwang-Su Cho, Beom-Seok Park, Rod A. Wing & Tae-Jin Yang

Scientific Reports 5, Article number: 15655 (2015)
07 July 2015
30 September 2015
Published online:
28 October 2015
Cytoplasmic chloroplast (cp) genomes and nuclear ribosomal DNA (nR) are the primary sequences used to understand plant diversity and evolution. We introduce a high-throughput method to simultaneously obtain complete cp and nR sequences using Illumina platform whole-genome sequence. We applied the method to 30 rice specimens belonging to nine Oryza species. Concurrent phylogenomic analysis using cp and nR of several of specimens of the same Oryza AA genome species provides insight into the evolution and domestication of cultivated rice, clarifying three ambiguous but important issues in the evolution of wild Oryza species. First, cp-based trees clearly classify each lineage but can be biased by inter-subspecies cross-hybridization events during speciation. Second, O. glumaepatula, a South American wild rice, includes two cytoplasm types, one of which is derived from a recent interspecies hybridization with O. longistminata. Third, the Australian O. rufipogan-type rice is a perennial form of O. meridionalis.

This article comes from Arizona Genomics Institute

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