Plastome phylogenomics and morphological traits analyses provide new insights into the phylogenetic position, species delimitation and speciation of Triplostegia (Caprifoliaceae)

doi:10.1186/s12870-023-04663-4

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	Plastome phylogenomics and morphological traits analyses provide new insights into the phylogenetic position, species delimitation and speciation of Triplostegia (Caprifoliaceae)
	Fu,Qing-Li; Mo,Zhi-Qiong; Xiang,Xiao-Guo; Milne,Richard I.; Jacquemyn,Hans; Burgess,Kevin S.; Sun,Ya-Nan; Yan,Hua; Qiu,Li; Yang,Bo-Yun; Tan,Shao-Lin
	2023
Source Publication	BMC PLANT BIOLOGY
Volume	23 Issue:1 Pages:645
Abstract	BackgroundThe genus Triplostegia contains two recognized species, T. glandulifera and T. grandiflora, but its phylogenetic position and species delimitation remain controversial. In this study, we assembled plastid genomes and nuclear ribosomal DNA (nrDNA) cistrons sampled from 22 wild Triplostegia individuals, each from a separate population, and examined these with 11 recently published Triplostegia plastomes. Morphological traits were measured from herbarium specimens and wild material, and ecological niche models were constructed.ResultsTriplostegia is a monophyletic genus within the subfamily Dipsacoideae comprising three monophyletic species, T. glandulifera, T. grandiflora, and an unrecognized species Triplostegia sp. A, which occupies much higher altitude than the other two. The new species had previously been misidentified as T. glandulifera, but differs in taproot, leaf, and other characters. Triplotegia is an old genus, with stem age 39.96 Ma, and within it T. glandulifera diverged 7.94 Ma. Triplostegia grandiflora and sp. A diverged 1.05 Ma, perhaps in response to Quaternary climate fluctuations. Niche overlap between Triplostegia species was positively correlated with their phylogenetic relatedness.ConclusionsOur results provide new insights into the species delimitation of Triplostegia, and indicate that a taxonomic revision of Triplostegia is needed. We also identified that either rpoB-trnC or ycf1 could serve as a DNA barcode for Triplostegia.
Keyword	Plastid genome Phylogenomics Speciation Species delimitation Triplostegia FOREST DYNAMICS PLOT HENGDUAN MOUNTAINS ELEVATIONAL GRADIENT SYSTEMATIC POSITION RIVERINE BARRIER DNA BARCODES PLANT DIPSACALES SEQUENCE DIVERSITY
DOI	10.1186/s12870-023-04663-4
WOS ID	WOS:001125227300004
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Document Type	期刊论文
Identifier	http://ir.kib.ac.cn/handle/151853/74951
Collection	中国科学院昆明植物研究所
Recommended Citation GB/T 7714	Fu,Qing-Li,Mo,Zhi-Qiong,Xiang,Xiao-Guo,et al. Plastome phylogenomics and morphological traits analyses provide new insights into the phylogenetic position, species delimitation and speciation of Triplostegia (Caprifoliaceae)[J]. BMC PLANT BIOLOGY,2023,23(1):645.
APA	Fu,Qing-Li.,Mo,Zhi-Qiong.,Xiang,Xiao-Guo.,Milne,Richard I..,Jacquemyn,Hans.,...&Tan,Shao-Lin.(2023).Plastome phylogenomics and morphological traits analyses provide new insights into the phylogenetic position, species delimitation and speciation of Triplostegia (Caprifoliaceae).BMC PLANT BIOLOGY,23(1),645.
MLA	Fu,Qing-Li,et al."Plastome phylogenomics and morphological traits analyses provide new insights into the phylogenetic position, species delimitation and speciation of Triplostegia (Caprifoliaceae)".BMC PLANT BIOLOGY 23.1(2023):645.

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