Abstract
Complete plastomes of 14 African yam species were reconstructed from whole genome sequencing. These plastomes sizes varied from 151,908 to 155,155 bp. We predicted 130 genes, including 18 duplicated genes located in the two inverted regions. Phylogenetic analysis obtained using the maximum likelihood procedure revealed that each species was distinct with high support. This resource will be useful for phylogenetic and diversity analysis of Dioscorea species.
Highlights
The genus Dioscorea L. (Dioscoreaceae) plays a considerable role in tropical Africa because of its important staple crop D. rotundata, a vine cultivated for its starchy tuber
Annotations were recovered from the alignment of the target plastome to NC_024170.1 using Geneious Pro 4.8.5 with Mauve 2.2.0 plugin (Darling et al 2010), manually checked for start and stop codons and by blasting the tRNA and rRNA sequences to GenBank nucleotide database
The 14 species presented the same genetic structure as the reference (NC_024170.1): 130 genes corresponding to 84 protein-coding genes, 38 tRNA and 8 rRNA
Summary
The genus Dioscorea L. (Dioscoreaceae) plays a considerable role in tropical Africa because of its important staple crop D. rotundata, a vine cultivated for its starchy tuber. Dioscorea is a very species-rich and morphologically complex genus. The taxonomy of this genus is difficult, as proven by the variation in the number of accepted species names (Caddick et al 2002; Wilkin et al 2005; Govaerts et al 2017). Molecular phylogenetic analyses focusing on the genus are poorly resolved (Terauchi et al 1992; Ramser et al 1997; Chaïr et al 2005).
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