Journal
APPLICATIONS IN PLANT SCIENCES
Volume 3, Issue 10, Pages -Publisher
WILEY
DOI: 10.3732/apps.1500022
Keywords
bioinformatic methods; chloroplast genome; next-generation sequencing; weedy rice
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Funding
- Instituto Nacional de Investigacion Agropecuaria (INIA), Uruguay
- Agencia Nacional de Investigacion e Innovacion (ANII), Uruguay
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Premise of the study: We developed a bioinformatic strategy to recover and assemble a chloroplast genome using data derived from low-coverage 454 GS FLX/Roche whole-genome sequencing. Methods: A comparative genomics approach was applied to obtain the complete chloroplast genome from a weedy biotype of rice from Uruguay. We also applied appropriate filters to discriminate reads representing novel DNA transfer events between the chloroplast and nuclear genomes. Results: From a set of 295,159 reads (96 Mb data), we assembled the chloroplast genome into two contigs. This weedy rice was classified based on 23 polymorphic regions identified by comparison with reference chloroplast genomes. We detected recent and past events of genetic material transfer between the chloroplast and nuclear genomes and estimated their occurrence frequency. Discussion: We obtained a high-quality complete chloroplast genome sequence from low-coverage sequencing data. Intergenome DNA transfer appears to be more frequent than previously thought.
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