ORCID Profile
0000-0001-6973-7877
Current Organisation
Institute of Botany Chinese Academy of Sciences
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Publisher: Wiley
Date: 03-12-2022
DOI: 10.1111/NPH.18580
Abstract: Hybridization caused by frequent environmental changes can lead both to species ersification (speciation) and to speciation reversal (despeciation), but the latter has rarely been demonstrated. Parthenocissus , a genus with its trifoliolate lineage in the Himalayan–Hengduan Mountains (HHM) region showing perplexing phylogenetic relationships, provides an opportunity for investigating speciation dynamics based on integrated evidence. We investigated phylogenetic discordance and reticulate evolution in Parthenocissus based on rigorous analyses of plastome and transcriptome data. We focused on reticulations in the trifoliolate lineage in the HHM region using a population‐level genome resequencing dataset, incorporating evidence from morphology, distribution, and elevation. Comprehensive analyses confirmed multiple introgressions within Parthenocissus in a robust temporal–spatial framework. Around the HHM region, at least three hybridization hot spots were identified, one of which showed evidence of ongoing speciation reversal. We present a solid case study using an integrative methodological approach to investigate reticulate evolutionary history and its underlying mechanisms in plants. It demonstrates an ex le of speciation reversal through frequent hybridizations in the HHM region, which provides new perspectives on speciation dynamics in mountainous areas with strong topographic and environmental heterogeneity.
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.YMPEV.2018.07.013
Abstract: Species represent the most basic unit of taxonomy. As such, species delimitation represents a crucial issue for bio ersity conservation. Taxonomic practices were revolutionized in the last three decades due to the increasing availability of molecular phylogenetic data. The genus Triplostegia (Caprifoliaceae) traditionally consists of two species, T. glandulifera and T. grandiflora, distinguishable mainly based on quantitative morphological features. In this study, we sequenced nine chloroplast loci (i.e., accD, psbK-psbI, rbcL-accD, rpoB-trnC, rps16-trnQ, trnE-trnT, trnF-ndhJ, trnH-psbA, trnS-trnG) and one nuclear locus (ITS) of 16 in iduals of Triplostegia representing the entire distribution range of both species recognized. Furthermore, we also obtained whole chloroplast sequences for 11 of the 16 in iduals for which silica gel-dried leaves were available. Our phylogenetic analyses integrating chloroplast genome sequences and multiple loci data revealed that Triplostegia includes four main clades that largely match geography. Neither T. grandiflora nor T. glandulifera was recovered as monophyletic and no diagnosable differences in leaf, flower, and pollen traits were detected between the two species, indicating the need for a revised species circumscription within Triplostegia. Our study highlights the importance of combining data from different sources while defining species limits.
Publisher: Oxford University Press (OUP)
Date: 12-2021
DOI: 10.1093/NSR/NWAB199
Publisher: Wiley
Date: 22-06-2021
DOI: 10.1111/CLA.12462
Abstract: Bio ersity exchanges across the Malesian region, linking the distinct biotas of Asia and Australia, have long attracted the curiosity of biologists. Tetrastigma (Vitaceae) has a wide distribution in Asia through the Sunda archipelago to Australia and provides a good case to elucidate floristic exchange between Asia and Australia. Tetrastigma species have fleshy fruits that are consumed by birds, representing a lineage with a predictable dispersal across island chains. We herein estimate the ergence times and reconstruct the biogeographic history of Tetrastigma with intensive taxon s ling (96 of approximately 120 species %) using 10 chloroplast loci. The biogeographic history of Tetrastigma was reconstructed with 4‐area and 6‐area isions by delineating the Sunda region into one or three areas of endemism based on a phylogenetic bioregionalization analysis and the geological history of Malesia. The 4‐area ision shows that Tetrastigma originated in continental Asia and erged from the recently segregated genus Pseudocayratia in the early Eocene (49.43 Ma). Dispersal from continental Asia might have started in the late Eocene but mainly occurred in the last 10 Myr. Continental Asia is indicated to be the most important source area while Sunda is the biggest sink, with 16 of the 27 dispersal events inferred from continental Asia to Sunda. Only seven dispersal events are inferred arriving in the Sahul plate and one reverse dispersal from Sahul back to Asia. The 6‐area ision suggests that the Philippines have been an active junction between Asia and Australia. The biogeographic history of Tetrastigma illustrates an asymmetric floristic exchange between Asia and Australia in this genus, which has been facilitated by the formation of terrestrial connections in the late Miocene and the expansion of wet tropical forests across Wallace's Line and beyond.
Publisher: Elsevier BV
Date: 07-2018
DOI: 10.1016/J.YMPEV.2018.03.010
Abstract: Coadaptation between mistletoes and birds captured the attention of Charles Darwin over 150 years ago, stimulating considerable scientific research. Here we used Loranthaceae, a speciose and ecologically important mistletoe family, to obtain new insights into the interrelationships among its hosts and dispersers. Phylogenetic analyses of Loranthaceae were based on a dataset of nuclear and chloroplast DNA sequences. Divergence time estimation, ancestral area reconstruction, and ersification rate analyses were employed to examine historical biogeography. The crown group of Loranthaceae was estimated to originate in Australasian Gondwana during the Paleocene to early Eocene (59 Ma, 95% HPD: 53-66 Ma), and rapidly ersified, converting from root parasitic to aerial parasitic trophic mode ca. 50 Ma during the Eocene climatic optimum. Subsequently, Loranthaceae were inferred to be widespread in Australasia and South America but absent in Africa. The African and European members were derived from Asiatic lineages. The burst of ersification of Loranthaceae occurred during a climatic optimum period that coincides with the dominance of tropical forests in the world. This also corresponds to the trophic mode conversion of Loranthaceae and rapid radiation of many bird families - important agents for long-distance dispersal in the Cenozoic.
Publisher: Wiley
Date: 28-12-2017
DOI: 10.1111/JSE.12295
Publisher: Springer Science and Business Media LLC
Date: 31-01-2018
DOI: 10.1038/NATURE25485
Abstract: High species ersity may result from recent rapid speciation in a 'cradle' and/or the gradual accumulation and preservation of species over time in a 'museum'. China harbours nearly 10% of angiosperm species worldwide and has long been considered as both a museum, owing to the presence of many species with hypothesized ancient origins, and a cradle, as many lineages have originated as recent topographic changes and climatic shifts-such as the formation of the Qinghai-Tibetan Plateau and the development of the monsoon-provided new habitats that promoted remarkable radiation. However, no detailed phylogenetic study has addressed when and how the major components of the Chinese angiosperm flora assembled to form the present-day vegetation. Here we investigate the spatio-temporal ergence patterns of the Chinese flora using a dated phylogeny of 92% of the angiosperm genera for the region, a nearly complete species-level tree comprising 26,978 species and detailed spatial distribution data. We found that 66% of the angiosperm genera in China did not originate until early in the Miocene epoch (23 million years ago (Mya)). The flora of eastern China bears a signature of older ergence (mean ergence times of 22.04-25.39 Mya), phylogenetic overdispersion (spatial co-occurrence of distant relatives) and higher phylogenetic ersity. In western China, the flora shows more recent ergence (mean ergence times of 15.29-18.86 Mya), pronounced phylogenetic clustering (co-occurrence of close relatives) and lower phylogenetic ersity. Analyses of species-level phylogenetic ersity using simulated branch lengths yielded results similar to genus-level patterns. Our analyses indicate that eastern China represents a floristic museum, and western China an evolutionary cradle, for herbaceous genera eastern China has served as both a museum and a cradle for woody genera. These results identify areas of high species richness and phylogenetic ersity, and provide a foundation on which to build conservation efforts in China.
Publisher: Magnolia Press
Date: 12-02-2019
DOI: 10.11646/PHYTOTAXA.392.1.2
Abstract: The genus Triplostegia is revised and only a single, geographically variable species, Triplostegia glandulifera, is recognised. Triplostegia grandiflora is formally included as a synonym of T. glandulifera. A revised description is presented encompassing the full range of observed morphological ersity following examination of 525 specimens. All names published in or referrable to Triplostegia are considered and discussed. Details of type specimens are enumerated to enhance the correct application of names. Three names were published independently in 1901, so the dates of publication must be carefully considered to establish priority if any taxa are segregated from T. glandulifera in future. A lectotype is designated for Triplostegia delavayi. Triplostegia aschersoniana is considered to be a valid combination based on Hoeckia aschersoniana.
Publisher: Magnolia Press
Date: 11-04-2016
DOI: 10.11646/PHYTOTAXA.255.3.9
Abstract: Yua C.L. Li (Vitaceae), a genus previously known from China, Nepal and India, is newly recorded from Vietnam. A specimen discovered in the rainforest of Lao Cai province, northern Vietnam was identified as Yua austro-orientalis (F.P. Metcalf) C.L. Li based on both morphological and molecular data. To improve our understanding of relationships between Yua and Parthenocissus Planch., we present diagnostic characteristics for these two genera. We discuss leaf, stem and seed features used to distinguish between Y. austro-orientalis and Y. thomsonii (M.A. Lawson) C.L. Li, a species widely distributed in China, Nepal and northern India. The opportunity is taken to review the typification of all Yua taxa. A lectotype is selected for Vitis thomsonii M.A. Lawson.
Publisher: Wiley
Date: 13-06-2023
DOI: 10.1002/TAX.12980
Abstract: Cyphostemma , with ca. 200 species, is the second‐largest genus after Cissus in the grape family Vitaceae. Cyphostemma exhibits a high degree of morphological variation both between and within species that confounds species delimitation. Additional questions remain due to limited taxon s ling, original reference specimens damaged or lost and incomplete descriptions of taxa. Previous molecular studies, with limited taxon s ling, suggested three major clades corresponding to their distribution in continental Africa, Madagascar and Asia. However, deep relationships and biogeographic history within Cyphostemma remain unresolved. We conducted phylogenetic analysis and morphological character reconstruction of Cyphostemma using 91 newly assembled plastomes, with a focus on resolving complex taxonomic issues in Madagascar. Our results strongly support the Malagasy Cyphostemma as non‐monophyletic for the first time. Biogeographic reconstructions reveal two independent dispersals from continental Africa to Madagascar. The first dispersal is dated to the Oligocene and has led to the ersification of species with pinnate leaves in Madagascar. The second dispersal is estimated to have occurred during the late Miocene and has given rise to the only species with digitate leaves in Madagascar. Ancestral state reconstructions reveal that several morphological innovations may have promoted adaptation of Cyphostemma to a erse range of habitats in Madagascar. In particular, a group of species from southern Madagascar have evolved both succulent stems and leaves to cope with extreme aridification in this region. Finally, relationships within three species complexes from the “Sambirano domain”, the southern spiny forest‐thicket and the northern limestone areas of Madagascar are clarified and four new taxa are proposed based on molecular and morphological evidence.
Publisher: Wiley
Date: 21-09-2021
DOI: 10.1002/TAX.12562
Abstract: Causonis (Vitaceae) is widely distributed in the tropical, sub‐tropical and temperate regions from Asia to Australia. The genus was established by Rafinesque in 1830 but included under Cayratia by Gagnepain in 1911. Generic status of Causonis was restored in 2013, but circumscription of the genus and its species remained poorly understood. Here, we s le 92 accessions of Causonis to reconstruct the phylogenetic relationships within the genus using four chloroplast loci ( atpB‐rbcL , trnC‐petN , trnH‐psbA , trnL‐F ) and three nuclear loci ( AS1 , At103 , ITS). Both the chloroplast and nuclear data support the monophyly of Causonis , and relationships among major clades of the genus are well‐supported based on the chloroplast data. The first erged clade consists of two species both endemic to Australasia. Evolutionary trends of eight morphological characters are tested through ancestral character state reconstruction using the chloroplast dataset. We recognize 16 species and 4 varieties in Causonis , including two new species: C. australasica sp. nov. and C. glauca sp. nov. We herein make 10 new combinations for eight species and two varieties. The widespread Causonis japonica is also redefined based on morphological and molecular evidence.
Publisher: Wiley
Date: 28-12-2021
DOI: 10.1111/HIV.13221
Abstract: HIV outcomes centre primarily around clinical markers with limited focus on patient‐reported outcomes. With a global trend towards capturing the outcomes that matter most to patients, there is agreement that standardizing the definition of value in HIV care is key to their incorporation. This study aims to address the lack of routine, standardized data in HIV care. An international working group (WG) of 37 experts and patients, and a steering group (SG) of 18 experts were convened from 14 countries. The project team (PT) identified outcomes by conducting a literature review, screening 1979 articles and reviewing the full texts of 547 of these articles. Semi‐structured interviews and advisory groups were performed with the WG, SG and people living with HIV to add to the list of potentially relevant outcomes. The WG voted via a modified Delphi process – informed by six Zoom calls – to establish a core set of outcomes for use in clinical practice. From 156 identified outcomes, consensus was reached to include three patient‐reported outcomes, four clinician‐reported measures and one administratively reported outcome standardized measures were included. The WG also reached agreement to measure 22 risk‐adjustment variables. This outcome set can be applied to any person living with HIV aged 18 years. Adoption of the HIV360 outcome set will enable healthcare providers to record, compare and integrate standardized metrics across treatment sites to drive quality improvement in HIV care.
Publisher: Springer Science and Business Media LLC
Date: 09-10-2023
Location: No location found
No related grants have been discovered for Limin Lu.