SH1045584.10FU

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数据库为界定、识别、交流及处理基于DNA的物种假说（Species Hypotheses, SH）提供了统一的标准化方案。国际核酸序列数据库中的所有真菌内转录间隔区（Internal Transcribed Spacer, ITS）序列，通过应用一组动态距离阈值（0.5%~3.0%）被聚类至近似物种级别的单元。所有物种假说（SH）均会被分配唯一且稳定的数字对象唯一标识符（Digital Object Identifier, DOI）格式的名称，其分类学与生态学注释将通过分布式网络第三方注释工作完成审核验证。物种假说（SH）会尽可能结合该假说下所有序列的鉴定结果，关联至对应的分类单元名称及其分类层级（如门、纲、目等）。将选取一条自动或人工指定的序列作为每个物种假说的代表序列。这些代表序列已发布于https://unite.ut.ee/repository.php，可供科研社区用于本地序列相似性搜索、高通量测序分析流程等科研场景。随着公共真菌ITS序列数据量的增长，该系统与数据集将自动进行更新。