The complete chloroplast genome sequence of Docynia indica (Wall.) Decne

Characteristics and phylogenetic analysis of the complete chloroplast genome of Rubus chingii Hu 1925 from the family Rosaceae

Rubus chingii Hu 1925 is an important medicinal vine shrub in the Rosaceae family, widely distributed in China and Japan. In this study, the complete chloroplast genome of R. chingii was sequenced and identified. The chloroplast genome was 155,563 bp in size with a total GC content of 37.06%. Two 25,749-bp inverted repeat (IRA and IRB) regions divided the genome as four sections, with the remainder forming a large single-copy (LSC, 85,322 bp) and a small single-copy (SSC, 18,743 bp) regions. This genome contained a total of 131 genes, of which 86 were protein-coding genes, 37 tRNA genes, and eight rRNA genes. The phylogenetic analysis showed that R. chingii, along with several other R. longisepalus, R. tsangii, R. hirsutus, R. taiwanicola, R. rubroangustifolius, and R. glandulosopunctatus, formed the monophylic group. Interestingly, the chloroplast genome structure we reported was different from the previously reported structure and provided richer phylogenetic analysis information in the Rubus genus compared to previous studies. The genome information reported in this paper will provide some useful information for further investigation on the evolution of the family Rosaceae.

Phylogeny of Maleae (Rosaceae) Based on Complete Chloroplast Genomes Supports the Distinction of Aria, Chamaemespilus and Torminalis as Separate Genera, Different from Sorbus sp

Several genera formerly contained within the genus Sorbus L. sensu lato have been proposed as separate taxa, including Aria, Chamaemespilus and Torminalis. However, molecular evidence for such distinctions are rather scarce. We assembled the complete chloroplast genome of Sorbus aucuparia, another representative of Sorbus s.s., and performed detailed comparisons with the available genomes of Aria edulis, Chamaemespilus alpina and Torminalis glaberrima. Additionally, using 110 complete chloroplast genomes of the Maleae representatives, we constructed the phylogenetic tree of the tribe using Maximum Likelihood methods. The chloroplast genome of S. aucuparia was found to be similar to other species within Maleae. The phylogenetic tree of the Maleae tribe indicated that A. edulis, C. alpina and T. glaberrima formed a concise group belonging to a different clade (related to Malus) than the one including Sorbus s.s. (related to Pyrus). However, Aria and Chamaemespilus appeared to be more closely related to each other than to Torminalis. Our results provide additional support for considering Aria, Chamaemespilus and Torminalis as separate genera different from Sorbus s.s.

The complete chloroplast genome of a Cladrastis yunchunii X.W.Li et G.S

Cladrastis yunchunii X.W.Li et G.S is a plant species belonged to the family Papilionaceae. Cladrastis yunchunii is currently found in broad-leaved forests in the limestone area of Luxi County, Yunnan Province. It is suitable for afforestation and urban greening in limestone areas. In this study, for the first time, we report the complete chloroplast genome sequence of C. yunchunii. We sequenced and assembled the entire chloroplast genome of C. yunchuniii. The chloroplast genome was determined to be 158,250 bp in length. It contained large single-copy (LSC) and small single-copy (SSC) regions of 84,930 bp and 12,664 bp, respectively, which were separated by a pair of inverted repeats (IR) regions of 30,328 bp. The genome contained 132 genes, including 87 protein-coding genes, 8 rRNA genes, and 37 tRNA genes. The overall GC content of the whole genome is 38.1%, and the corresponding values of the LSC, SSC, and IR regions were 36.4%, 33.6%, and 41.3%, respectively. Phylogenetic analysis suggested that C. yunchunii is closely related to the genus Ormosia in the Papilionaceae.

The complete chloroplast genome sequence of Ormosia boluoensis

Ormosia boluoensis is a critically Endangered species that is exclusively distributed in Xiangtoushan National Nature Reserve in Guangdong province, China. At present, the population of the species is made up of less than 100 adult individuals. Here, we are the first to report the complete chloroplast genome sequence of O. boluoensis. The chloroplast genome of O. boluoensis is 175,760 bp long and includes a large single-copy region that is 74,613 bp, a small, 18,719 bp single copy region and a pair of inverted repeat regions that are 40,771 bp and 41,657 bp in length, respectively. The overall GC content of the O. boluoensis chloroplast genome is 35.58% and contains a total of 134 genes, including 89 protein-coding genes, 8 ribosomal RNA genes, and 37 transfer RNA genes. Phylogenetic analysis revealed that O. boluoensis is genetically similar to O. xylocarpa and O. emarginata genera.