Phylogenomics, plastome structure and species identification in Mahonia (Berberidaceae).

Background: Elucidating the phylogenetic relationships within species-rich genera is essential but challenging, especially when lineages are assumed to have been going through radiation events. Mahonia Nutt. (Berberidaceae) is a genus with cosmopolitan distribution, comprising approximately 100 species, two of which are known as Caulis Mahoniae (M.

On the Species Delimitation of the Group of (Rosaceae): Evidence From Plastome and Nuclear Sequences and Morphology.

The recognition, identification, and differentiation of closely related plant species present significant and notorious challenges to taxonomists. The group of , which comprises four to seven species, is an example of a group in which species delimitation and phylogenetic reconstruction have been difficult, due to the lack of clear morphological distinctions, limited sampling, and low informativeness of molecular evidence. Thus, the precise number of species in the group and the relationships among them remain unclear.

Complete plastome sequence of (Rosaceae), a species endemic in west of China.

The Chinese endemic species is of great importance biogeographically, and is distributed in the edge of the Qinghai-Tibetan Plateau. Here, the complete chloroplast genome sequence of was assembled based on the Illumina reads. The complete plastome is 158,740 bp in length, with a large single-copy (87,206 bp) region, a small single-copy (18,884 bp) region, and two inverted repeat (26,325 bp) regions.

Chloroplast genomes elucidate diversity, phylogeny, and taxonomy of Pulsatilla (Ranunculaceae).

Pulsatilla (Ranunculaceae) consists of about 40 species, and many of them have horticultural and/or medicinal value. However, it is difficult to recognize and identify wild Pulsatilla species. Universal molecular markers have been used to identify these species, but insufficient phylogenetic signal was available.