From the Himalayan region or the Malay Archipelago: Molecular dating to trace the origin of a fern genus Phymatopteris (Polypodiaceae)

Li, Chunxiang; Lu, Shu-Gang; Ma, Jinshuang; Sun, Xiaoyan; Gai, Yonghua; Barrington, David S.; Yang, Qun

doi:10.1007/s11434-012-5392-8

Cited by 8 publications

(6 citation statements)

References 26 publications

(32 reference statements)

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“…(2015). This increase of diversification was estimated at around 8 Ma (Sundue & al., 2015), 27 Ma (Li & al., 2012), or 35-30 Ma (Testo & Sundue, 2016), based on different secondary calibration points and taxon samples. Further studies with increased taxon sampling and more markers are needed to explore this radiation evolutionary process within selligueoids.…”

Section: Discussionmentioning

confidence: 99%

A molecular phylogeny of selligueoid ferns (Polypodiaceae): Implications for a natural delimitation despite homoplasy and rapid radiation

Schneider

Hovenkamp

et al. 2018

TAXON

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Homoplasy, autapomorphy and rapid radiation have frequently been discussed as the main causes of instable generic classifications of plants including ferns. In this study, we explore the natural generic classification for selligueoid ferns by investigating the phylogenetic relationships among almost all its previously recognized segregates. We compare the phylogenies that resulted from two datasets. Dataset 1 comprises a broad taxonomic sampling of fifty-one species of selligueoid ferns. Phylogenetic analysis of this dataset revealed a notable long branch followed by a polytomy recovering three core clades of selligueoid ferns. Only one of the core clades corresponds to the traditional generic concept of Arthromeris. Dataset 2 includes fewer species but a broader sample of six plastid DNA markers. However, the results of this dataset show that the increase of informative molecular characters still did not provide sufficient evidence to resolve the polytomy. The long branches together with a consistent backbone polytomy support a rapid radiation in the selligueoid ferns. The majority of morphological characters were recovered as homoplastic, which hampers the identification of segregates with unambiguous diagnostic characters. Considering morphological characters and our molecular phylogeny, a single genus Selliguea s.l., which includes all selligueoid species, is proposed here to achieve taxonomic stability in this group.

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Section: Discussionmentioning

confidence: 99%

A molecular phylogeny of selligueoid ferns (Polypodiaceae): Implications for a natural delimitation despite homoplasy and rapid radiation

Schneider

Hovenkamp

et al. 2018

TAXON

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“…Fraser‐Jenk. (Polypodiaceae) occurs in southeast, east and south Asia (Li et al, ). It is an evergreen, facultative, epiphytic fern with overwintering leaves, and grows in both epiphytic and terrestrial habitats (Lu et al, ; Zhang, ).…”

Section: Methodsmentioning

confidence: 99%

Trait acclimation of the clonal fern Selliguea griffithiana to forest epiphytic and terrestrial habitats

Chen

Sun

Song

et al. 2019

Ecological Research

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Although epiphytic habitats are more stressful and heterogeneous than terrestrial habitats, how facultative epiphytes acclimate to such contrasting environments has been poorly understood. Our study focused on the variation of functional traits between epiphytic and terrestrial individuals of Selliguea griffithiana, and provided considerable functional acclimation of this species to such contrasting environments. We sampled ramets of S. griffithiana from epiphytic and terrestrial habitats of a subtropical montane moist forest, SW China. Morphological and anatomical traits, photosynthesis, biomass and ramet density of S. griffithiana were measured and it was found that these traits differed significantly between the two habitats. Frond length, stipe length, spacer length (interramet distance), stomatal density, vein density, maximal chlorophyll fluorescence and relative chlorophyll content of fronds, and biomass per ramet were all lower in epiphytic habitat than those in terrestrial habitat, whereas frond thickness and ramet density were higher in the former. Photosynthetic light–response curves revealed a higher carbon assimilation capability of individuals in terrestrial habitat than in epiphytic habitat, whereas cumulative water loss curves showed a lower water loss rate in the latter. The findings demonstrate acclimation of S. griffithiana to both habitats, that is, epiphytic ramets can mitigate water scarcity at some cost of a reduced photosynthetic capacity, whereas terrestrial ramets can afford to improve the light capture to a higher photosynthetic capacity without any water stresses.

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“…Other regions of the world could have acted as source of biodiversity to colonise the QTP. A study by Li et al () indicates that a fern genus colonised the QTP from the Malay Archipelago. The rich passerine avifauna of the QTP might be the result of colonization of several lineages from adjacent regions: the ages of tropical and subtropical clades coincide with the colonization events of the Himalayan foothills by Indo‐Burmese and Indo‐Chinese ancestors, whereas Himalayan subalpine forests were colonised from northern Chinese and eastern Palaearctic source populations (Johansson et al , ; Päckert et al , ).…”

Section: Are Geological and Climatic Changes Potential Drivers Of Biomentioning

confidence: 99%

The role of the uplift of the Qinghai‐Tibetan Plateau for the evolution of Tibetan biotas

et al. 2014

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Biodiversity is unevenly distributed on Earth and hotspots of biodiversity are often associated with areas that have undergone orogenic activity during recent geological history (i.e. tens of millions of years). Understanding the underlying processes that have driven the accumulation of species in some areas and not in others may help guide prioritization in conservation and may facilitate forecasts on ecosystem services under future climate conditions. Consequently, the study of the origin and evolution of biodiversity in mountain systems has motivated growing scientific interest. Despite an increasing number of studies, the origin and evolution of diversity hotspots associated with the Qinghai-Tibetan Plateau (QTP) remains poorly understood. We review literature related to the diversification of organisms linked to the uplift of the QTP. To promote hypothesis-based research, we provide a geological and palaeoclimatic scenario for the region of the QTP and argue that further studies would benefit from providing a complete set of complementary analyses (molecular dating, biogeographic, and diversification rates analyses) to test for a link between organismic diversification and past geological and climatic changes in this region. In general, we found that the contribution of biological interchange between the QTP and other hotspots of biodiversity has not been sufficiently studied to date. Finally, we suggest that the biological consequences of the uplift of the QTP would be best understood using a meta-analysis approach, encompassing studies on a variety of organisms (plants and animals) from diverse habitats (forests, meadows, rivers), and thermal belts (montane, subalpine, alpine, nival). Since the species diversity in the QTP region is better documented for some organismic groups than for others, we suggest that baseline taxonomic work should be promoted.

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From the Himalayan region or the Malay Archipelago: Molecular dating to trace the origin of a fern genus Phymatopteris (Polypodiaceae)

Cited by 8 publications

References 26 publications

A molecular phylogeny of selligueoid ferns (Polypodiaceae): Implications for a natural delimitation despite homoplasy and rapid radiation

A molecular phylogeny of selligueoid ferns (Polypodiaceae): Implications for a natural delimitation despite homoplasy and rapid radiation

Trait acclimation of the clonal fern Selliguea griffithiana to forest epiphytic and terrestrial habitats

The role of the uplift of the Qinghai‐Tibetan Plateau for the evolution of Tibetan biotas

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