SH1045171.10FU

UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.

UNITE为界定、识别、交流以及处理基于DNA的物种假说（DNA-based Species Hypotheses，以下简称SH）提供了统一的标准化方法。国际核酸序列数据库中的全部真菌ITS序列，均通过应用一组动态距离阈值（0.5%~3.0%）被聚类至近似物种层级的单元。所有物种假说均会被赋予唯一且稳定的DOI格式命名，其分类学与生态学注释信息将通过分布式网络第三方注释流程完成核验。每个SH将尽可能关联至对应的分类单元名称及其分类层级（如门、纲、目等），该关联过程将综合考量该SH下所有序列的鉴定结果。将为每个SH选取一条自动或人工指定的代表序列。此类代表序列已公开发布（访问地址：https://unite.ut.ee/repository.php），可供科研群体用于本地序列相似性检索、新一代测序分析流程等研究场景。随着公共真菌ITS序列数量的持续增长，该系统与数据集将自动完成更新。