Dataset Information

Phylogenomic and evolutionary dynamics of inverted repeats across Angelica plastomes.

ABSTRACT:

Background

Angelica L. (family Apiaceae) is an economically important genus comprising ca. One hundred ten species. Angelica species are found on all continents of the Northern Hemisphere, and East Asia hosts the highest number of species. Morphological characters such as fruit anatomy, leaf morphology and subterranean structures of Angelica species show extreme diversity. Consequently, the taxonomic classification of Angelica species is complex and remains controversial, as the classifications proposed by previous studies based on morphological data and molecular data are highly discordant. In addition, the phylogenetic relationships of major clades in the Angelica group, particularly in the Angelica s. s. clade, remain unclear. Chloroplast (cp) genome sequences have been widely used in phylogenetic studies and for evaluating genetic diversity.

Results

In this study, we sequenced and assembled 28 complete cp genomes from 22 species, two varieties and two cultivars of Angelica. Combined with 36 available cp genomes in GenBank from representative clades of the subfamily Apioideae, the characteristics and evolutionary patterns of Angelica cp genomes were studied, and the phylogenetic relationships of Angelica species were resolved. The Angelica cp genomes had the typical quadripartite structure including a pair of inverted repeats (IRs: 5836-34,706?bp) separated by a large single-copy region (LSC: 76,657-103,161?bp) and a small single-copy region (SSC: 17,433-21,794?bp). Extensive expansion and contraction of the IR region were observed among cp genomes of Angelica species, and the pattern of the diversification of cp genomes showed high consistency with the phylogenetic placement of Angelica species. Species of Angelica were grouped into two major clades, with most species grouped in the Angelica group and A. omeiensis and A. sinensis grouped in the Sinodielsia with Ligusticum tenuissimum.

Conclusions

Our results further demonstrate the power of plastid phylogenomics in enhancing the phylogenetic reconstructions of complex genera and provide new insights into plastome evolution across Angelica L.

SUBMITTER: Wang M

PROVIDER: S-EPMC7792290 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Publications

Phylogenomic and evolutionary dynamics of inverted repeats across Angelica plastomes.

Wang Mengli M Wang Xin X Sun Jiahui J Wang Yiheng Y Ge Yang Y Dong Wenpan W Yuan Qingjun Q Huang Luqi L

BMC plant biology 20210107 1

<h4>Background</h4>Angelica L. (family Apiaceae) is an economically important genus comprising ca. One hundred ten species. Angelica species are found on all continents of the Northern Hemisphere, and East Asia hosts the highest number of species. Morphological characters such as fruit anatomy, leaf morphology and subterranean structures of Angelica species show extreme diversity. Consequently, the taxonomic classification of Angelica species is complex and remains controversial, as the classifi ...[more]

PMID: 33413122

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Dataset Information

Phylogenomic and evolutionary dynamics of inverted repeats across Angelica plastomes.

Background

Results

Conclusions

Publications

Phylogenomic and evolutionary dynamics of inverted repeats across Angelica plastomes.

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