SH1044520.10FU

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为基于DNA的物种假说（Species Hypotheses，SH）的界定、识别、传播及相关研究工作提供了统一的标准化框架。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，通过应用一系列动态距离阈值（0.5%~3.0%区间）被聚类至近似物种水平。所有物种假说均被赋予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信息将通过分布式的网络第三方注释工作完成核验。研究人员会结合该物种假说所包含的全部序列的鉴定结果，尽可能将其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）。每个物种假说都会选取一条自动或人工指定的序列作为代表序列，这些代表序列已发布于https://unite.ut.ee/repository.php，可供科学界用于本地序列相似性检索、下一代测序分析流程等科研场景。随着公共真菌ITS序列数据量的持续增长，该系统与数据集将自动进行更新。