Fig 1.
Diversity of Ipomea species and putative hybrids analyzed in this work.
The canga environment (A); Ipomoea cavalcantei × I. marabaensis putative hybrids (B); I. cavalcantei (C); I. marabaensis (D); I. carnea (E); I. triloba (F); I. quamoclit (G); I. goyazensis (H); I. asarifolia (I and J); and I. maurandioides (K). Photos by Mayara Pastore (A, C-G, I-K), Pedro L. Viana (B) and Marcos E. L. Lima (H).
Table 1.
List of Ipomoea lineages studied in the present work, including sampling information and plastome sequencing data for each analyzed specimen.
Fig 2.
Circular map of the plastomes of Ipomoea cavalcantei (A) and I. marabaensis (B), showing the typical quadripartite structure indicated in the inner circle (IRB, LSC, IRA and SSC).
The gene categories are shown in colored boxes and simple repeats sites are indicated in pink.
Fig 3.
Comparison of the four junctions of the chloroplast quadripartite structure, grouping species with similar junctions, based on [21].
*ndhA with one exon; **ndhA with two exons.
Table 2.
Gene content in the assembled plastome of Ipomoea cavalcantei.
Table 3.
H-disp regions captured through the k-mer frequency dispersion among the samples.
Fig 4.
Phylogenetic relationships among Ipomoea species.
Unrooted ML phylogenetic tree of the 12 Ipomoea sequenced plastomes, plus five Ipomoea plastomes previously available in public databases and one outgroup from Solanales (Solanum dulcamara) using RAxML with the GTR+G model and rapid bootstrap with 1,000 replicates, based on a concatenated matrix of 13 genes. The cavalcantei-marabaensis group is highlighted in blue and the quamoclit-asarifolia-maurandioides in brown.
Fig 5.
Dendrogram representing the genetic distances among Ipomoea species.
Unrooted genetic distance tree based on k-mer frequency distribution using the AAF approach, using the 12 Ipomoea sequenced plastomes, four Ipomoea plastomes previously available in public databases and one outgroup from Solanales (Solanum pinnatisectum). The cavalcantei-marabaensis group is highlighted in blue and the quamoclit-asarifolia-maurandioides in brown.