Publications by authors named "Xian-Lin Guo"

Article Synopsis
  • The study focuses on a monotypic genus endemic to southwest China, analyzing plastid and nrDNA sequences for phylogenetic insights.
  • Previous classifications of two species as synonyms of other genera were re-evaluated through morphological evidence, suggesting they relate more closely to one genus.
  • A new species from Anhui Province was identified and described, with detailed genetic comparisons revealing relationships among the species within the Selineae clade, prompting proposed taxonomic changes.
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is a taxonomically challenging taxon of Apiaceae, as its circumscription and composition remain controversial for morphological similarities with several related genera, leading to a dispute between in the broad sense and strict sense. While evidence from previous molecular studies recognized plural branching lineages within the s. l.

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(Apiaceae, Apioideae) is now considered to have an East-Asia and Sino-Himalaya distribution. The genus was not recognized as a natural and separate genus and was treated as a synonym of both in and since first established, though Pimenov have made many taxonomic revisions to , phylogenetic relationships between and have been in dispute. Thirty-four plastomes and 35 nrITS from Apioideae were analysed by RAxML and MrBayes to reconstruct the phylogenetic relationships, along with carpology of 10 species and comparative analyses of 17 plastomes to investigate the evidence supporting the independence of .

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Exploring the effects of orographic events and climatic shifts on the geographic distribution of organisms in the Himalayas-Hengduan Mountains (HHM) region and Qinghai-Tibetan Plateau (QTP) is crucial to understand the impact of environmental changes on organism evolution. To gain further insight into these processes, we reconstructed the evolutionary history of nine species distributed across the HHM and QTP regions. In total, 525 individuals from 56 populations of the nine species were analyzed based on three maternally inherited chloroplast fragments (, , and ) and one nuclear DNA region (internal transcribed spacer, ITS).

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The disjunctive distribution (Europe-Caucasus-Asia) and species diversification across Eurasia for the genus sect. has fascinating attractions for researchers aiming to understanding the development and history of modern Eurasia flora. However, no any studies have been carried out to address the evolutionary history of this section.

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Article Synopsis
  • Traditional phylogenies from chloroplast DNA have struggled to clarify the evolutionary relationships within Apioideae, a large subfamily of Apiaceae.
  • The study utilized next-generation sequencing to analyze 90 complete chloroplast genomes and performed phylogenomic reconstruction, revealing some early divergences but only partial resolution among certain clades, indicating an ancient radiation scenario.
  • Findings suggest that chloroplast capture events, influenced by early hybridization, occurred mainly in the middle to late Miocene, shedding light on the geological and climatic conditions impacting Apioideae's evolution.
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(Apiaceae) comprises about 10 species, but its taxonomy and phylogeny are disputed. The genus is mostly distributed in the Himalayas and Hengduan Mountains at high elevation. Earlier molecular studies involving six species of indicated that this genus is not monophyletic and is nested in the East Asia Clade.

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is a Sino-Himalayan endemic genus of Apiaceae and distributed in high-elevations from Nepal to SW China. In this study, morphological characteristics were combined with nuclear internal transcribed spacer (ITS) and two chloroplast DNA (cpDNA) intron sequences ( and ) to determine the phylogenetic placement of and the infrageneric relationships between five species. The results confirmed that was a polyphyletic group separated into two clades, and East Asia clades.

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Wolff (Apiaceae) is a perennial species naturally distributed in Yunnan and Xizang. The complete chloroplast genome sequence of was generated by assembly using whole-genome next-generation sequencing data. The complete chloroplast genome of was 154,865 bp in total sequence length and divided into four distinct regions: small single-copy region (17,370 bp), large single-copy region (84,641 bp), and a pair of inverted repeat regions (26,427 bp).

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H. Wolff (Apiaceae, Apioideae) is a small genus mainly distributed in the Hengduan Mountains and the Himalayas. Ten species of have been described and nine species are distributed in China.

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L. (Apiaceae) is a perennial and herbal genus, most species of which have high medicinal value. However, few studies have been performed using plastome data in this genus, and the phylogenetic relationships have always been controversial.

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Exploring the effects of orographic events and climatic shifts on geographic distribution of organism in the Hengduan Mountains Region (HMR) and its eastern adjacent area is crucial to the understanding of the environmental changes to organismal evolution. To gain further insight into these processes, we reconstruct evolutionary history of ten species in Allium section Sikkimensia, distributed across regions abovementioned. Using chloroplast and nuclear sequence variation of 79 populations of these ten Allium species with known morphological preferences, we elucidate the phylogenetic relationship, divergence time, ancestral area and genetic structures.

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