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Assembly and analysis of the complete Salix purpurea L. (Salicaceae) mitochondrial genome sequence.


ABSTRACT: Plant mitochondrial (mt) genomes possess several complex features, including a variable size, a dynamic genome structure, and complicated patterns of gene loss and gain throughout evolutionary history. Studies of plant mt genomes can, therefore, provide unique insights into organelle evolution. We assembled the complete Salix purpurea L. mt genome by screening genomic sequence reads generated by a Roche-454 pyrosequencing platform. The pseudo-molecule obtained has a typical circular structure 598,970 bp long, with an overall GC content of 55.06%. The S. purpurea mt genome contains 52 genes: 31 protein-coding, 18 tRNAs, and three rRNAs. Eighteen tandem repeats and 404 microsatellites are distributed unevenly throughout the S. purpurea mt genome. A phylogenetic tree of 23 representative terrestrial plants strongly supports S. purpurea inclusion in the Malpighiales clade. Our analysis contributes toward understanding the organization and evolution of organelle genomes in Salicaceae species.

PROVIDER: S-EPMC5084139 | BioStudies |

REPOSITORIES: biostudies

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