世界黄芩(唇形科)系统发生组学分析。

IF 4.4 1区 生物学 Q1 BIOLOGY BMC Biology Pub Date : 2024-09-02 DOI:10.1186/s12915-024-01982-2
Yinghui Wang, Chao Xu, Xing Guo, Yan Wang, Yanyi Chen, Jie Shen, Chunnian He, Yan Yu, Qiang Wang
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引用次数: 0

摘要

背景:黄芩属(Scutellaria)是一个亚世界性的属,是唇形科(Lamiaceae)最大的属之一,在温带和热带高山地区发现约 500 个物种。该属植物具有重要的药用价值,其抗癌、抗炎、抗氧化和保护肝脏的特性引起了研究人员的关注。此外,它还可用于农业和园艺。了解黄芩的分类对于有效利用和保护黄芩至关重要。然而,目前主要基于形态特征的分类框架并不完善。尽管进行了多项系统发育研究,但物种关系和划分仍然模糊不清,导致该属没有一个稳定可靠的分类系统:本研究分析了 234 个完整的叶绿体基因组,包括 220 个新序列和 14 个以前发表的序列,涉及全球 206 个种、亚种和变种。通过最大似然法和贝叶斯推断法,利用六个数据矩阵进行了系统发育分析,最终为黄芩建立了一个稳健的系统发育框架。我们提出了三个亚属,建议将 Anaspis 科提升为亚属,并将 Lupulinaria 和 Apeltanthus 科合并。Apeltanthus亚属和Perilomia科的划分需要重新考虑。叶绿体基因组的比较分析强调了 IR/SC 边界特征是一个重要的分类指标。我们共鉴定了758个SSRs、558个较长的重复序列和10个高变异区,包括trnK-rps16、trnC-petN、petN-psbM、accD-psaI、petA-psbJ、rpl32-trnL、ccsa-ndhD、rps15-ycf1、ndhF和ycf1。 这些发现对今后的物种鉴定、系统发育和群体遗传学研究具有重要的参考价值:基于迄今为止最全面的样本收集和完整的叶绿体基因组分析,黄芩的系统发育大大提高了我们对其属下关系的认识。叶绿体基因组特征的广泛研究为黄芩这一全球重要药用植物的未来开发和利用奠定了坚实的基础。
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Phylogenomics analysis of Scutellaria (Lamiaceae) of the world.

Background: Scutellaria, a sub-cosmopolitan genus, stands as one of the Lamiaceae family's largest genera, encompassing approximately 500 species found in both temperate and tropical montane regions. Recognized for its significant medicinal properties, this genus has garnered attention as a research focus, showcasing anti-cancer, anti-inflammatory, antioxidant, and hepatoprotective qualities. Additionally, it finds application in agriculture and horticulture. Comprehending Scutellaria's taxonomy is pivotal for its effective utilization and conservation. However, the current taxonomic frameworks, primarily based on morphological characteristics, are inadequate. Despite several phylogenetic studies, the species relationships and delimitations remain ambiguous, leaving the genus without a stable and reliable classification system.

Results: This study analyzed 234 complete chloroplast genomes, comprising 220 new and 14 previously published sequences across 206 species, subspecies, and varieties worldwide. Phylogenetic analysis was conducted using six data matrices through Maximum Likelihood and Bayesian Inference, resulting in a robustly supported phylogenetic framework for Scutellaria. We propose three subgenera, recommending the elevation of Section Anaspis to subgeneric rank and the merging of Sections Lupulinaria and Apeltanthus. The circumscription of Subgenus Apeltanthus and Section Perilomia needs to be reconsidered. Comparative analysis of chloroplast genomes highlighted the IR/SC boundary feature as a significant taxonomic indicator. We identified a total of 758 SSRs, 558 longer repetitive sequences, and ten highly variable regions, including trnK-rps16, trnC-petN, petN-psbM, accD-psaI, petA-psbJ, rpl32-trnL, ccsA-ndhD, rps15-ycf1, ndhF, and ycf1. These findings serve as valuable references for future research on species identification, phylogeny, and population genetics.

Conclusions: The phylogeny of Scutellaria, based on the most comprehensive sample collection to date and complete chloroplast genome analysis, has significantly enhanced our understanding of its infrageneric relationships. The extensive examination of chloroplast genome characteristics establishes a solid foundation for the future development and utilization of Scutellaria, an important medicinal plant globally.

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来源期刊
BMC Biology
BMC Biology 生物-生物学
CiteScore
7.80
自引率
1.90%
发文量
260
审稿时长
3 months
期刊介绍: BMC Biology is a broad scope journal covering all areas of biology. Our content includes research articles, new methods and tools. BMC Biology also publishes reviews, Q&A, and commentaries.
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