AI Article Synopsis
- Cytoplasmic chloroplast genomes and nuclear ribosomal DNA are crucial for studying plant diversity and evolution, particularly in rice.
- A new high-throughput method utilizing Illumina sequencing was developed to obtain complete sequences of both cp and nR from 30 rice specimens across nine Oryza species.
- The research revealed insights into rice evolution and domestication, highlighting biases in cp-based classifications, the hybridization of wild rice species, and the identification of perennial traits in certain Australian rice varieties.
Article Abstract
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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4623524 | PMC |
| http://dx.doi.org/10.1038/srep15655 | DOI Listing |
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