Plastid Phylogenetics, Biogeography and Character Evolution of the Chinese Endemic Genus Sinojackia Hu.

Published: May 13, 2024

Sinojackia Hu. comprises five to eight Chinese endemic species with high ornamental and medicinal value. However, the generic limits, interspecific relationships evolutionary history of genus remain unresolved. In this study, we newly sequenced assembled three plastomes S. oblongicarpa compared them those other congeneric explore taxonomic delimitation genus. Plastomes structure were extremely conserved in terms number genes, sequence length GC content. Codon usage patterns revealed that natural selection may be main factor shaping codon bias. Our phylogenetic tree shows is monophyletic can divided into two clades. as a distinct supported for it distantly related sarcocarpa. The analysis morphological features indicates woody mesocarp an ancestral feature, while undeveloped, spongy fleshy are later derived. originated Central-Southeast China during early Miocene. period, experienced elevated diversification migrated from Hunan Province Sichuan development Asian monsoon East flora. at intraspecies levels mainly occurred Quaternary. Glacial-interglacial interactions climate provide favorable expansion conditions on small-scale.

Language: Английский

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Clarifying the Taxonomic Relationships of Tulipa iliensis and T. thianschanica Based on Multiple Evidences of Phenotypic, Karyotype, Molecular, and Chloroplast Genomes

Diversity, Journal Year: 2025, Volume and Issue: 17(3), P. 219 - 219

Published: March 20, 2025

In China, the genus Tulipa L. has been identified as a national second-class protected plant. Due to complex evolutionary and genetic backgrounds of tulips, taxonomy its species remains matter dispute. The current study is dedicated clarifying taxonomic relationship between two closely related species, T. iliensis thianschanica, by integrating morphological, karyotypic, molecular evidence—a novel framework for resolving ambiguities in species. Morphological analyses showed significant differences filament shape, pistil length, overall plant height, presence or absence stem hairs, perianth length width, which supports conclusion that they are distinct (p < 0.001). Karyotype analysis further verified disparities their chromosome morphology, karyotype indices scatter plot distributions suggest Molecular phylogenetic using Internal Transcribed Spacer sequences (ITSs) chloroplast genomes confirmed there evidence indicating possible occurrence hybridization events. research findings demonstrate thianschanica independent thereby providing valuable insights into wild tulips contributing conservation these

Language: Английский

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Metabolomic and Physiological Analyses Reveal the Effects of Different Storage Conditions on Sinojackia xylocarpa Hu Seeds

Metabolites, Journal Year: 2024, Volume and Issue: 14(9), P. 503 - 503

Published: Sept. 18, 2024

Hu is a deciduous tree in the

Language: Английский

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Comparative Analysis of the Chloroplast Genomes of the Melliodendron (Styracaceae) Species: Providing Insights into Molecular Evolution and Phylogenetic Relationships

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 26(1), P. 177 - 177

Published: Dec. 28, 2024

Melliodendron xylocarpum is a member of the Styracaceae family, which well-known for its remarkable ornamental and medicinal properties. In this research, we conducted comparative analysis chloroplast genomes from four samples M. xylocarpum, representing Melliodendron. The results demonstrated that genome ranging 157,103 bp to 158,357 exhibited typical quadripartite structure, including one large single-copy (LSC) region (90,131 90,342 bp), small (SSC) (18,467 18,785 two inverted repeat regions (IRs) (24,115 24,261 bp). Different levels expansion contraction were observed in IR samples. Besides, accD ycf1 have been identified under positive selection, potentially linked adaptive response various environmental changes. Conflicting phylogenetic relationships among genera within family tree constructed using CDS sequences complete genomes. Furthermore, significance sample size was also highlighted study enhancing accuracy findings analyses. research will provide significant insights future investigations into evolutionary trends conservation species.

Language: Английский

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Niche Evolution and Conservation of a Chinese Endemic Genus Sinojackia (Styracaceae)

Biology, Journal Year: 2024, Volume and Issue: 13(12), P. 1085 - 1085

Published: Dec. 22, 2024

Climate change and human activities are expected to have a profound impact on the distribution of species, especially for narrowly distributed species. Sinojackia is endemically in China, all species listed under Chinese protected wild Here, we reconstructed phylogeny estimated divergence time based whole plastomes, conducted niche evolution, predicted potential habitat area from LGM future. Our results strongly supported monophyly plastomes. This genus originated middle Miocene diversified since late Miocene. The aridity index was highest significant factor its evolution rate increased slowly divergence. precipitation warmest quarter main environmental variable affecting LGM, while footprint near-current era 2081–2100. Compared current Sinojackia, highly suitable contracted but expanded during study provides areas situ conservation Sinojackia.

Language: Английский

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