SH1043026.10FU

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提供了一套统一的方法，用于界定、识别、交流以及处理基于DNA的物种假说（Species Hypotheses，以下简称SH）。国际核苷酸序列数据库收录的所有真菌内转录间隔区（Internal Transcribed Spacer，以下简称ITS）序列，均通过一组动态距离阈值（0.5%~3.0%）聚类至近似物种水平。所有物种假说均会被赋予唯一且稳定的专属名称，该名称采用数字对象唯一标识符（Digital Object Identifier，DOI）格式；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工作完成验证。每个SH将尽可能关联至对应的分类单元名称及其所属分类层级（如门、纲、目等），关联依据为该SH下所有序列的鉴定结果。每条SH均会选取一条自动或人工指定的序列作为其代表序列。上述代表序列已发布于https://unite.ut.ee/repository.php，可供科研社区用于本地序列相似性检索、高通量测序分析流程等科研场景。随着公共真菌ITS序列数量的持续增长，该系统与数据集将自动完成更新。