SH1399172.10FU

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数据库为基于DNA的物种假说（Species Hypotheses，SH）的界定、识别、交流与研究应用提供了统一方案。国际核苷酸序列数据库中的所有真菌内转录间隔区（Internal Transcribed Spacer，ITS）序列，均通过应用一组动态距离取值区间（0.5%~3.0%）被聚类至近似物种水平。所有物种假说均以数字对象标识符（Digital Object Identifier，DOI）的形式被赋予唯一且稳定的名称，其分类学与生态学注释信息通过分布式、基于网页的第三方注释工作完成审核验证。通过整合该物种假说下所有序列的鉴定信息，尽可能为每个物种假说匹配对应的分类单元名称及其分类层级（如门、纲、目等）。将为每个此类物种假说选取一条经自动或人工指定的代表序列。上述代表序列已发布于（https://unite.ut.ee/repository.php），可供科研社群用于本地序列相似性搜索、下一代测序分析流程等科研场景。随着公共真菌ITS序列数量的持续增长，该系统与配套数据集将自动进行更新。