Phylogeny, Biogeography, and Molecular Dating of Cornelian Cherries (Cornus, Cornaceae): Tracking Tertiary Plant Migration

Xiang, Qiu-Yun Jenny; Manchester, Steve R.; Thomas, D. Travis; Zhang, Wenheng; Fan, Chuanzhu

doi:10.1554/03-763.1

Cited by 5 publications

(6 citation statements)

References 77 publications

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“…Previous studies proposed rapid diversification of the CC clade in its early evolutionary history (Xiang et al, 2005, 2011). Our data also support rapid diversification of the CC clade into three modern lineages, C. volkensii in Africa, C. sessilis in the Pacific Northwest of the United States, and the four Eurasian species in the mid‐Eocene, likely accompanied by ILS (Figures 1, 3), as suggested by short internal branches, discordance among nuclear gene trees (with similar frequencies), and relatively low branch support in the plastid DNA tree.…”

Section: Discussionmentioning

confidence: 93%

“…The wide distribution of extant taxa of the northern hemisphere with outliers in tropical eastern Africa as well as Central and South America provides an opportunity to gain insights into historical floristic exchanges within the northern hemisphere, as well as between the northern and southern hemispheres. Reconstruction of biogeographic history of Cornus in its broad sense was conducted earlier, with results varying across analyses (Xiang et al, 2005, 2006; Xiang and Thomas, 2008; Fu et al, 2019). In general, an origin and early diversification of Cornus in eastern Asia was suggested if fossils were not included in the analysis (Xiang et al, 2006; Xiang and Thomas, 2008; Fu et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…An updated classification is proposed using the PhyloCode with the hope to stabilize the names of this taxonomically highly controversial group. During the past two decades, the dogwood genus has become a model clade for bridging macro‐ and microevolution (Fan et al, 2004, 2007; Xiang et al, 2005, 2008; Xiang and Thomas, 2008; Zhang et al, 2008; Yu et al, 2017; Dong et al, 2019; Lindelof et al, 2020; Melton et al, 2020), for integrating phylogenetics, evolution, and developmental biology and molecular genetics (Feng et al 2009b, 2011, 2012, 2013; Liu et al, 2013; Zhang et al, 2013; Geng et al, 2016; Liu et al, 2016, 2017, 2019; Ma et al, 2017), and for integrating evolution with genetics, metabolomics, physiology, and/or ecology (Karlson et al, 2004; Sarnighausen et al, 2004; Call et al, 2016; Pais et al, 2017, 2018, 2020; Zhou 2021). Our study is also an important step facilitating further comparative studies, via a robust phylogeny that we provide as a framework for synthesizing different dimensions of dogwood biology that have been studied for many decades (e.g., Bate‐Smith et al, 1975; Eyde, 1988; Murrell, 1993, 1994; Xiang et al, 1993, 1998; Noshiro and Baas, 1998, 2000, and subsequent publications from the Xiang lab).…”

Section: Discussionmentioning

confidence: 99%

“…In addition to disagreements regarding relationships among the major clades, relationships within the BB, CC, and BW groups have also remained incompletely resolved. For example, within the CC group, the relationships among (1) Cornus volkensii , the only dioecious species in Cornus , which is an evergreen tree endemic to southern Sudan to southern‐tropical Africa, (2) C. sessilis , a deciduous shrub or small tree endemic to the mountains of northern California and southern Oregon of western North America, and (3) the remaining four species in Eurasia have varied among studies (Xiang et al, 2005, 2011; Fu et al, 2019; Thomas et al, 2021). Similarly, within the BB group, relationships among the North American species (i.e., Cornus nuttallii , a deciduous tree endemic to the Pacific region of western North America at an elevation of 1000–2000 m a.s.l., C. disciflora , a semi‐evergreen tree endemic to Mexico and Central America in seasonally dry tropical biomes, and C. florida , a deciduous tree endemic to eastern North America), and within the Asian BB dogwood species, have also varied among studies (Xiang et al, 1996, 1998, 2006, 2011; Fu et al, 2019; Thomas et al, 2021).…”

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confidence: 99%

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An updated phylogeny, biogeography, and PhyloCode‐based classification of Cornaceae based on three sets of genomic data

Xiang

Cheng

et al. 2023

American J of Botany

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Premise A major goal of systematic biology is to uncover the evolutionary history of organisms and translate that knowledge into stable classification systems. Here, we integrate three sets of genome‐wide data to resolve phylogenetic relationships in Cornaceae (containing only Cornus s.l.), reconstruct the biogeographic history of the clade, and provide a revised classification using the PhyloCode to stabilize names for this taxonomically controversial group. Methods We conducted phylogenetic analyses using 312 single‐copy nuclear genes and 70 plastid genes from Angiosperms353 Hyb‐Seq, plus numerous loci from RAD‐Seq. We integrated fossils using morphological data and produced a dated phylogeny for biogeographical analysis. Results A well‐resolved, strongly supported, comprehensive phylogeny was obtained. Biogeographic analyses support an origin and rapid diversification of Cornus into four morphologically distinct major clades in the Northern Hemisphere (with an eastern Asian ancestor) during the late Cretaceous. Dispersal into Africa from eastern Asia likely occurred along the Tethys Seaway during the Paleogene, whereas dispersal into South America likely occurred during the Neogene. Diversification within the northern hemisphere likely involved repeated independent colonization of new areas during the Paleogene and Neogene along the Bering Land Bridge, the North Atlantic Land Bridge, and the Tethys Seaway. Thirteen strongly supported clades were named following rules of the PhyloCode. Conclusions Our study provides an example of integrating genomic and morphological data to produce a robust, explicit species phylogeny that includes fossil taxa, which we translate into an updated classification scheme using the PhyloCode to stabilize names.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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An updated phylogeny, biogeography, and PhyloCode‐based classification of Cornaceae based on three sets of genomic data

Xiang

Cheng

et al. 2023

American J of Botany

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“…Both C. mas and C. officinalis belongs to a subgenus, which is characterized by blooming before leaf development and having red or purple black fruits [32]. Taking into consideration the similar morphological characters of Cornus fruits, it seems crucial to focus on their differentiation based on the phytochemical profile.…”

Section: Introductionmentioning

confidence: 99%

Cornus mas and Cornus officinalis—A Comparison of Antioxidant and Immunomodulatory Activities of Standardized Fruit Extracts in Human Neutrophils and Caco-2 Models

Czerwińska

Bobińska

Cichocka

et al. 2021

Plants

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Fruits of Cornus mas and Cornus officinalis are representative plant materials traditionally used in Europe and Asia, respectively, in the treatment of diabetes and diabetes-related complications, which are often mediated by pathogenic inflammatory agents. Additionally, due to the fact of mutual infiltration of Asian and European medicines, the differentiation as well as standardization of traditional prescriptions seem to be crucial for ensuring the quality of traditional products. The objective of this study was a comparison of biological activity of extracts from fruits of C. mas and C. officinalis by an assessment of their effect on reactive oxygen species (ROS) generation in human neutrophils as well as cytokines secretion both in neutrophils (tumor necrosis factor α, TNF- α; interleukin 8, IL-8; interleukin 1β, IL-1β) and in human colon adenocarcinoma cell line Caco-2 (IL-8). To evaluate the phytochemical differences between the studied extracts as well as to provide a method for standardization procedures, a quantitative analysis of iridoids, such as loganin, sweroside, and loganic acid, found in extracts of Cornus fruits was performed with HPLC-DAD. All standardized extracts significantly inhibited ROS production, whereas the aqueous-alcoholic extracts were particularly active inhibitors of IL-8 secretion by neutrophils. The aqueous-methanolic extract of C. officinalis fruit, decreased IL-8 secretion by neutrophils to 54.64 ± 7.67%, 49.68 ± 6.55%, 50.29 ± 5.87% at concentrations of 5, 50, and 100 µg/mL, respectively, compared to LPS-stimulated control (100%). The aqueous extract of C. officinalis fruit significantly inhibited TNF-α release by neutrophils at concentrations of 50 and 100 µg/mL. On the other hand, the aqueous-ethanolic extract of C. mas fruit showed the propensity to increase TNF-α and IL-1β secretion. The modulatory activity of the Cornus extracts was noted in the case of secretion of IL-8 in Caco-2 cells. The effect was comparable with dexamethasone. The content of loganin in aqueous and aqueous-methanolic extract of C. officinalis fruit was higher than in the aqueous-ethanolic extract of C. mas fruit, which was characterized by a significant quantity of loganic acid. In conclusion, the immunomodulatory effect observed in vitro may partially confirm the traditional use of Cornus fruits through alleviation of the development of diabetes-derived inflammatory complications. Loganin and loganic acid are significant markers for standardization of C. mas and C. officinalis fruit extracts, respectively.

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Historical climate change and vicariance events contributed to the intercontinental disjunct distribution pattern of ash species (Fraxinus, Oleaceae)

Li,

Wang,

Liu

et al. 2024

Commun Biol

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The Northern Hemisphere temperate forests exhibit a disjunct distributional pattern in Europe, North America, and East Asia. Here, to reveal the promoter of intercontinental disjunct distribution, Fraxinus was used as a model organism to integrate abundant fossil evidence with high-resolution phylogenies in a phytogeographic analysis. We constructed a robust phylogenetic tree using genomic data, reconstructed the geographic ancestral areas, and evaluated the effect of incorporating fossil information on the reconstructed biogeographic history. The phylogenetic relationships of Fraxinus were highly resolved and divided into seven clades. Fraxinus originated in western North America during Eocene, and six intercontinental dispersal events and five intercontinental vicariance events were occured. Results suggest that climate change and vicariance contributed to the intercontinental disjunct distribution pattern of Fraxinus. Moreover, results highlight the necessity of integrating phylogenetic relationship and fossil to improve the reliability of inferred biogeographic events and our understanding of the processes underlying disjunct distributions.

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Phylogeny, Biogeography, and Molecular Dating of Cornelian Cherries (Cornus, Cornaceae): Tracking Tertiary Plant Migration

Cited by 5 publications

References 77 publications

An updated phylogeny, biogeography, and PhyloCode‐based classification of Cornaceae based on three sets of genomic data

An updated phylogeny, biogeography, and PhyloCode‐based classification of Cornaceae based on three sets of genomic data

Cornus mas and Cornus officinalis—A Comparison of Antioxidant and Immunomodulatory Activities of Standardized Fruit Extracts in Human Neutrophils and Caco-2 Models

Historical climate change and vicariance events contributed to the intercontinental disjunct distribution pattern of ash species (Fraxinus, Oleaceae)

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