在Acer中测试塑体和核核糖体DNA序列作为下一代DNA条形码,用于物种识别和家族遗传分析
1Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
BMC plant biology
|May 22, 2024
概括
使用塑体和核核糖体DNA (nrDNA) 的DNA条形码显著改善了Acer.中的物种识别. 遗传学分析显示,广泛的杂交影响了Acer的进化.
科学领域:
- 植物学 植物学
- 分子系统学 分子系统学
- 进化生物学 进化生物学
背景情况:
- 有150多个物种的Acer属,由于形态变异,存在分类学上的挑战.
- 形态识别很困难,需要可靠的分子方法来进行物种歧视.
- 质体和核核糖体DNA (nrDNA) 是Acer物种识别的有希望的DNA条形码.
研究的目的:
- 评估塑体和nrDNA序列在Acer.中用于物种识别的有效性.
- 使用分子数据对Acer属进行遗传学分析.
- 为了研究杂交在 Acer 演变中的作用.
主要方法:
- 使用塑体和nrDNA标记物的DNA条形码.
- 分析了来自83个代表55个Acer物种的个体的序列数据.
- 遗传学重建包括Acer.的19个部分的128个物种.
主要成果:
- 塑体实现了90.47%的物种歧视,优于标准的塑体标记物 (例如,matK+rbcL+trnH-psbA在61.90%) 和ycf1 (76.19%).
- nrDNA (80.95%) 的分辨率高于ITS (71.43%),有效地识别了塑体体遗漏的物种.
- 遗传学分析揭示了广泛的细胞核不一致,表明杂交和不完整的血统分类 (ILS) 的重大影响.
结论:
- 质体和nrDNA显著提高了Acer.中的物种分辨率.
- 细胞核不一致凸显了杂交在Acer进化历史中的关键作用.
- 由于潜在的细胞核冲突,不建议将塑体和nrDNA结合起来.
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