Dataset Information

The complete plastome and phylogeny of Barnardia japonica (Asparagaceae).

ABSTRACT: Barnardia japonica is a perennial herb in Asparagaceae, which has important ornamental and medicinal value. Here, we sequenced and characterized the plastome of B. japonica from Sichuan, China. The plastome length of B. japonica was 156,111 bp, including an 84,333 bp LSC, a 18,272 bp SSC and two 26,753 bp IRs. A total of 132 genes were detected, including 20 duplicated genes and 112 unique genes. Phylogenetic analysis based on 32 taxa revealed the monophyly of B. japonica and its sister relationship to Albuca kirkii. In addition, our results will provide valuable information for the phylogeny of Asparagaceae.

SUBMITTER: Chen L

PROVIDER: S-EPMC7782957 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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The complete plastome and phylogeny of Barnardia japonica (Asparagaceae).

Chen Li L Liu Ying Y Chen Jianbo J Lin Na N Xia Maoqin M

Mitochondrial DNA. Part B, Resources 20200702 3

Barnardia japonica is a perennial herb in Asparagaceae, which has important ornamental and medicinal value. Here, we sequenced and characterized the plastome of B. japonica from Sichuan, China. The plastome length of B. japonica was 156,111 bp, including an 84,333 bp LSC, a 18,272 bp SSC and two 26,753 bp IRs. A total of 132 genes were detected, including 20 duplicated genes and 112 unique genes. Phylogenetic analysis based on 32 taxa revealed the monophyly of B. japonica ...[more]

PMID: 33457890

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Project description:Background and aimsAsparagaceae subfamily Nolinoideae is an economically important plant group, but the deep relationships and evolutionary history of the lineage remain poorly understood. Based on a large data set including 37 newly sequenced samples and publicly available plastomes, this study aims to better resolve the inter-tribal relationships of Nolinoideae, and to rigorously examine the tribe-level monophyly of Convallarieae, Ophiopogoneae and Polygonateae.MethodsMaximum likelihood (ML) and Bayesian inference (BI) methods were used to infer phylogenetic relationships of Nolinoideae at the genus level and above. The diversification history of Nolinoideae was explored using molecular dating.Key resultsBoth ML and BI analyses identically recovered five clades within Nolinoideae, respectively corresponding to Dracaeneae + Rusceae, Polygonateae + Theropogon, Ophiopogoneae, Nolineae, and Convallarieae excluding Theropogon, and most deep nodes were well supported. As Theropogon was embedded in Polygonateae, the plastome phylogeny failed to resolve Convallarieae and Polygonateae as reciprocally monophyletic. Divergence time estimation showed that the origins of most Nolinoideae genera were dated to the Miocene and Pliocene. The youthfulness of Nolinoideae genera is well represented in the three herbaceous tribes (Convallarieae, Ophiopogoneae and Polygonateae) chiefly distributed in temperate areas of the Northern Hemisphere, as the median stem ages of all 14 genera currently belonging to them were estimated at <12.37 Ma.ConclusionsThis study recovered a robust backbone phylogeny, providing new insights for better understanding the evolution and classification of Nolinoideae. Compared with the deep relationships recovered by a previous study based on transcriptomic data, our data suggest that ancient hybridization or incomplete lineage sorting may have occurred in the early diversification of Nolinoideae. Our findings will provide important reference for further study of the evolutionary complexity of Nolinoideae using nuclear genomic data. The recent origin of these herbaceous genera currently belonging to Convallarieae, Ophiopogoneae and Polygonateae provides new evidence to support the hypothesis that the global expansion of temperate habitats caused by the climate cooling over the past 15 million years may have dramatically driven lineage diversification and speciation in the Northern Hemisphere temperate flora.

Dataset Information

The complete plastome and phylogeny of Barnardia japonica (Asparagaceae).

Publications

The complete plastome and phylogeny of <i>Barnardia japonica</i> (Asparagaceae).

Similar Datasets

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