Allopolyploid origin and niche expansion of Rhodiola integrifolia (Crassulaceae)

Zhong, Da-Lv; Li, Yuan-Cong; Zhang, Jian‐Qiang

doi:10.1016/j.pld.2022.08.004

Cited by 3 publications

(1 citation statement)

References 48 publications

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“…Polyploidy appears to be also widespread in the Acre and Aeonium clades. In addition, allopolyploid speciation has been documented in Rhodiola (Zhong et al, 2022), indicating this process might be common in the evolution history of Crassulaceae.…”

Section: Widespread Parallel and Convergent Evolution Of Morphologica...mentioning

confidence: 99%

Plastomic data shed new light on the phylogeny, biogeography, and character evolution of the family Crassulaceae

Liu

Zhang

2023

J of Sytematics Evolution

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Crassulaceae is a mid‐sized family of angiosperms, most species of which are herbaceous succulents, usually with 5‐merous flowers and one or two whorls of stamens. Although previous phylogenetic studies revealed seven major “clades” in Crassulaceae and greatly improved our understanding of the evolutionary history of the family, relationships among major clades are still contentious. In addition, the biogeographic origin and evolution of important morphological characters delimiting infrafamilial taxa have not been subject to formal biogeographic and character evolution analyses based on a well‐supported phylogeny backbone. In this study, we used plastomic data of 52 species, representing all major clades revealed in previous studies to reconstruct a robust phylogeny of Crassulaceae, based on which we unraveled the spatiotemporal framework of diversification of the family. We found that the family may originate in southern Africa and then dispersed to the Mediterranean, from there to eastern Asia, Macaronesia, and North America. The crown age of Crassulaceae was dated at ca. 63.93 million years ago, shortly after the Cretaceous–Paleogene (K‐Pg) boundary. We also traced the evolution of six important morphological characters previously used to delimit infrafamilial taxa and demonstrated widespread parallel and convergent evolution of both vegetative (life form and phyllotaxis) and floral characters (number of stamen whorls, petals free or fused, and flower merism). Our results provide a robust backbone phylogeny as a foundation for further investigations, and also some important new insights into biogeography and evolution of the family Crassulaceae.

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Section: Widespread Parallel and Convergent Evolution Of Morphologica...mentioning

confidence: 99%

Plastomic data shed new light on the phylogeny, biogeography, and character evolution of the family Crassulaceae

Liu

Zhang

2023

J of Sytematics Evolution

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Quantitative analysis of active components in Rhodiola species based on disease module-guided network pharmacology

Zhu,

Jin,

et al. 2024

Arabian Journal of Chemistry

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Hybridization and divergent climatic preferences drive divergence of two allopatric Gentiana species on the Qinghai–Tibet Plateau

Fu,

Twyford,

Hao

et al. 2023

Annals of Botany

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Background and Aims Exploring how species diverge is vital for understanding the drivers of speciation. Factors such as geographic separation and ecological selection, hybridization, polyploidization and shifts in mating system are all major mechanisms of plant speciation, but their contributions to divergence are rarely well-understood. Here we test these mechanisms in two plant species, Gentiana lhassica and G. hoae, with the goal of understanding recent allopatric species divergence in the Qinghai-Tibet Plateau (QTP). Methods We performed Bayesian clustering, phylogenetic analysis and estimates of hybridization using 561,302 nuclear genomic SNPs. We performed redundancy analysis, and identified and annotated species-specific SNPs (ssSNPs) to explore the association between climatic preference and genetic divergence. We also estimated the genome sizes using flow cytometry to test for overlooked polyploidy. Key Results Genomic evidence confirms that G. lhassica and G. hoae are closely related but distinct species, while genome size estimates show divergence occurred without polyploidy. G. hoae has significantly higher average Fis value than G. lhassica. Population clustering based on genomic SNPs shows no signature of recent hybridization, however each species is characterized by a distinct history of hybridization with congeners that has shaped genome wide variation. G. lhassica has captured the chloroplast and experienced introgression with a divergent gentian species, while G. hoae has experienced recurrent hybridization with related taxa. Species distribution modelling suggested range overlap in the last Interglacial period, while redundancy analysis showed that precipitation and temperature are the major climatic differences explaining the separation of the species. The species differ by 2,993 ssSNPs, with genome annotation showing missense variants in genes involved in stress resistance. Conclusions This study suggests that the distinctiveness of these species in the QTP is driven by a combination of hybridization, geographical isolation, mating system differences and evolution of divergent climatic preferences.

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Allopolyploid origin and niche expansion of Rhodiola integrifolia (Crassulaceae)

Cited by 3 publications

References 48 publications

Plastomic data shed new light on the phylogeny, biogeography, and character evolution of the family Crassulaceae

Plastomic data shed new light on the phylogeny, biogeography, and character evolution of the family Crassulaceae

Quantitative analysis of active components in Rhodiola species based on disease module-guided network pharmacology

Hybridization and divergent climatic preferences drive divergence of two allopatric Gentiana species on the Qinghai–Tibet Plateau

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