Thepparatia vines (Hibisceae subtribe Trionum) phylogenomics and evolution

doi:10.1093/botlinnean/boae004

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	Thepparatia vines (Hibisceae subtribe Trionum) phylogenomics and evolution
	Landrein, Sven; Song, Shi-Jie; Zhang, Jie; Guo, Yong-Jie; Shen, Jian-Yong; Jiang, Qiu-Yu; Low, Shook Ling
	2024
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN	0024-4074
卷号	205 期号:4 页码:391-402
摘要	Hibisceae subtribe Trionum is the largest clade within Hibiscus s.l. and contains genera with a wide range of growth forms: herbaceous (Abelmoschus), shrubs (Malvaviscus), trees (Wercklea), and exceptionally lianas. The rare and localized Thepparatia species are unique in that they combine a lianescent habit and trioecy.Several problems have delayed the study of Hibisceae classification including low genetic variability, lack of synapomorphic morphological characters, transoceanic dispersal events, and allopolyploidy. Here, we present a comprehensive phylogenomic hypothesis of Thepparatia based on analyses of the maternally inherited chloroplast and biparentally inherited nuclear ribosomal cistron sequences, and compare these results with its speciation, karyology, and breeding system.Chloroplast genomes in subtribe Trionum were highly conserved except in Abelmoschus where four additional genes were duplicated. Recent diploid interspecific hybridization is suggested in Thepparatia sipsongpannaensis between T. fragrans and T. scandens during the Pleistocene, around 640 000 years ago. Our observations also indicate Thepparatia have a trioecious breeding system that combined with a unique habit, and a highly localized distribution pattern, have created cross-pollination barriers and ecological specialization. This suggests hybridization events are rare but evolutionary significant in subtribe Trionum.Finally, our study supports important nomenclature changes: the synonymization of Hibiscus austroyunnanensis with Thepparatia fragrans and the publication of a new species, Thepparatia sipsongpannaensis.
DOI	10.1093/botlinnean/boae004
WOS记录号	WOS:001167433200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75959
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Landrein, Sven,Song, Shi-Jie,Zhang, Jie,et al. Thepparatia vines (Hibisceae subtribe Trionum) phylogenomics and evolution[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2024,205(4):391-402.
APA	Landrein, Sven.,Song, Shi-Jie.,Zhang, Jie.,Guo, Yong-Jie.,Shen, Jian-Yong.,...&Low, Shook Ling.(2024).Thepparatia vines (Hibisceae subtribe Trionum) phylogenomics and evolution.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,205(4),391-402.
MLA	Landrein, Sven,et al."Thepparatia vines (Hibisceae subtribe Trionum) phylogenomics and evolution".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 205.4(2024):391-402.

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