UNITE QIIME release for Fungi

Three sets of QIIME files are released, corresponding to the SHs resulting from clustering at the 3% distance (97% similarity) and 1% distance (99%) threshold levels. The third set of files is the result of a dynamic use of clustering thresholds, such that some SHs are delimited at the 3% distance level, some at the 2.5% distance level, some at the 2% distance level, and so on; these choices were made manually by experts of those particular lineages of fungi. The syntax is the same throughout the three sets of files. Includes singletons set as RefS (in dynamic files).

本次发布了三组QIIME（Quantitative Insights Into Microbial Ecology）文件：其中两组分别对应以3%距离（即97%相似性）、1%距离（即99%相似性）阈值聚类得到的SHs；第三组文件采用动态聚类阈值策略生成，即部分SHs以3%距离阈值界定、部分以2.5%距离阈值界定、部分以2%距离阈值界定，依此类推，上述阈值选择由对应真菌类群的专家手动确定。三组文件的语法格式完全统一。动态阈值文件中，将单序列（singletons）标注为RefS。

搜集汇总

背景与挑战

背景概述

该数据集为真菌序列提供UNITE QIIME版本，包含三组基于不同聚类距离阈值（3%、1%和动态阈值）生成的QIIME文件，所有文件使用统一语法，动态文件还包含专家手动调整的聚类结果和单例序列。它专为真菌多样性分析设计，支持灵活的生物信息学处理，适用于生态学和系统发育研究。