一个定制的区域DNA条形码参考库,用于美国山间西部的菌,增加了成功的标本识别
Michael Kerr1, Steven D Leavitt2
1Department of Biology, Brigham Young University, Provo, UT 84602, USA.
Journal of fungi (Basel, Switzerland)
|July 28, 2023
概括
创建区域DNA参考图书馆显著改善了形真菌 (LFF) 的物种识别. 这种定制数据库提高了DNA条形码的成功率,这对于真菌多样性研究至关重要.
科学领域:
- 菌类学 菌类学是指菌类学.
- 生态生态学 生态生态学
- 遗传学 是一个遗传学.
背景情况:
- 对真菌多样性评估来说,DNA条形编码至关重要.
- 现有的真菌序列数据库缺乏足够的物种级别分辨率.
- 这种限制阻碍了对形菌 (LFF) 的准确识别.
研究的目的:
- 为了确定定制,专注于区域的DNA参考库是否提高了LFF的物种级别识别率.
- 为了比较区域ITS数据库与LFF识别的UNITE数据库的有效性.
主要方法:
- 开发了一个LFF在山间西部 (美国) 的区域ITS数据库,包含超过4800个序列,代表>600种.
- 采样了11个地点的LFF社区,使用高通量ITS2安普利康测序.
- 使用定制区域数据库和UNITE数据库,比较了物种级别识别成功率.
主要成果:
- 与UNITE数据库 (28.3-34.2%) 相比,定制的区域数据库实现了显著更高的物种级别分配 (72.3%).
- 定制数据库的网站特定识别率在72.3-82.1%之间,而UNITE.com的数据库为31.5-55.4%.
- 这表明识别候选LFF物种的实质性改进.
结论:
- 开发区域DNA参考库对于改善LFF中的物种级别识别是有效的.
- 定制数据库通过提高DNA条形码的准确性来加速LFF研究.
- 这种方法对于更全面地描述真菌多样性至关重要.
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