基于ITS2的Spatholobus Suberectus基因多样性和结构相关的GC异质性的分子鉴定和研究
Zi-Yi Zhao1, Jia-Wen Wu2, Chuan-Gui Xu1
1Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, China.
Scientific reports
|October 9, 2024
概括
内部转录的间隔器2 (ITS2) 区域有效地识别Spatholobus suberectus,并显示物种内的遗传多样性. 分析显示,ITS2适用于物种识别和理解S. suberectus遗传变异.
科学领域:
- 植物学 植物学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 准确识别药用植物,如Spatholobus suberectus对于质量控制和保护至关重要.
- 内部转录间隔器2 (ITS2) 区域是植物DNA条码和植物遗传学研究的潜在标记物.
- 了解S. suberectus内的遗传多样性对于其可持续利用和保护至关重要.
研究的目的:
- 评估内部转录间隔器2 (ITS2) 区域用于识别Spatholobus suberectus的有效性.
- 使用ITS2序列数据调查S. suberectus的遗传多样性和进化特征.
主要方法:
- 对来自S. suberectus和相关物种的292个ITS2序列的家族遗传学分析.
- 对遗传距离,同义替代率 (Ks) 和ITS2二次结构的分析.
- 检查配对和不配对区域中的GC含量,并调查突变模式和GC偏差基因转换 (gBGC).
主要成果:
- 在植物遗传学分析中,S. suberectus与其他物种有明显的区别.
- ITS2序列在S. suberectus中表现出显著的遗传变异,形成8个单元型和4个进化分支.
- 单基基因突变是基因对替代的主要原因,GC的替代率高于AU,部分原因是gBGC.
结论:
- ITS2区域是可靠的分子标记物,用于准确识别Spatholobus suberectus.
- S. suberectus ITS2的特征序列和结构特征为物种识别,产品质量评估和保护策略提供了基础.
- 在ITS2中高GC含量与高的重组和突变率相关,支持其在物种识别和多样性研究中的实用性.
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