The complete chloroplast genome sequence of Helwingia himalaica (Helwingiaceae, Aquifoliales) and a chloroplast phylogenomic analysis of the Campanulidae
| Autor: | Ying-Ying Liu, Yu Song, Yun-Hong Tan, Xin Yao, Richard T. Corlett |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Inverted repeat lcsh:Medicine Genome General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Asterids Phylogenetics Botany Campanulidae Gene Helwingia Phylogeny Whole genome sequencing biology Phylogenetic tree General Neuroscience lcsh:R Yunnan General Medicine biology.organism_classification Plastomes 030104 developmental biology Apiales Evolutionary biology General Agricultural and Biological Sciences |
| Zdroj: | PeerJ, Vol 4, p e2734 (2016) |
| ISSN: | 2167-8359 |
| Popis: | Complete chloroplast genome sequences have been very useful for understanding phylogenetic relationships in angiosperms at the family level and above, but there are currently large gaps in coverage. We report the chloroplast genome forHelwingia himalaica, the first in the distinctive family Helwingiaceae and only the second genus to be sequenced in the order Aquifoliales. We then combine this with 36 published sequences in the large (c. 35,000 species) subclass Campanulidae in order to investigate relationships at the order and family levels. TheHelwingiagenome consists of 158,362 bp containing a pair of inverted repeat (IR) regions of 25,996 bp separated by a large single-copy (LSC) region and a small single-copy (SSC) region which are 87,810 and 18,560 bp, respectively. There are 142 known genes, including 94 protein-coding genes, eight ribosomal RNA genes, and 40 tRNA genes. The topology of the phylogenetic relationships between Apiales, Asterales, and Dipsacales differed between analyses based on complete genome sequences and on 36 shared protein-coding genes, showing that further studies of campanulid phylogeny are needed. |
| Databáze: | OpenAIRE |
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