基于DNA条形码和叶绿体基因组的分子鉴定和混的Tetrastigma物种的遗传学分析
Xianjing Li1, Yue Zhang2, Meifang Song2
1College of Pharmacy, Dali University, Dali, China.
Frontiers in pharmacology
|July 28, 2025
概括
这项研究确定了十个多态热点在Tetrastigma 叶绿体基因组作为潜在的DNA标记物种识别. 内部转录间隔器2 (ITS2) 片段有效地区分了Tetrastigma obtectum和Tetrastigma serrulatum. 这两种类型的虫子.
科学领域:
- 植物基因组学 植物基因组学
- 分子分类学 分子分类学.
- 人类遗传学 是一个学科.
背景情况:
- 在传统医药中,四标的物种至关重要,但由于高度的多样性,很难识别.
- 准确的鉴定对于药用和保护工作至关重要.
研究的目的:
- 选候选DNA条形码序列用于Tetrastigma物种识别.
- 评估叶绿体 (CP) 基因组和内部转录间隔器2 (ITS2) 序列的区分疗效.
- 为了澄清Tetrastigma属内的遗传关系.
主要方法:
- 高通量Illumina测序以获得T. obtectum和T. serrulatum的完整CP基因组.
- 来自37个样本的ITS2片段的序列变化和二次结构的比较分析.
- 使用来自46种Vitaceae物种的CP基因组序列构建最大概率的家族遗传树.
主要成果:
- 在CP基因组中的10个多态热点 (例如ycf1,matK-rps16) 被确定为潜在的DNA标记物.
- ITS2序列有效地区分了T. obtectum和T. serrulatum,而二次结构没有.
- 遗传学分析为Tetrastigma物种的进化关系提供了洞察力.
结论:
- 已确定的CP基因组热点和ITS2序列为准确识别Tetrastigma物种提供了有价值的工具.
- 这项研究支持有效利用和保护药用Tetrastigma资源.
相关概念视频
01:29Modern Molecular Taxonomy
145
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
145
02:54Evolutionary Relationships through Genome Comparisons
6.2K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
6.2K
01:20Applications of Molecular Taxonomy
109
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
109
01:28Methods of Classification and Identification
196
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
196
02:05Gene Evolution - Fast or Slow?
7.4K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.4K
02:16Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
13.5K
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
13.5K