Biology Department, Macromycology Laboratory, Instituto de Ciências Agrárias e Ambientais Mediterrânicas, University of Évora, Évora, Portugal.
Instituto de Ciências Agrárias e Ambientais Mediterrânicas, University of Évora, Apartado 94, 7002-554, Évora, Portugal.
Fungal Biol. 2019 Apr;123(4):267-273. doi: 10.1016/j.funbio.2019.01.003. Epub 2019 Jan 24.
Desert truffles (mycorrhizal hypogeous Ascomycota) are found in arid and semi-arid areas of the globe and have great ecological and economic importance. Terfezia is undoubtedly the most diversified of all desert truffle genera, but its taxonomy is far from resolved. Specifically, the large number of newly described species plus the high intraspecific morphological variability observed within some Terfezia lineages as rendered the use of molecular techniques mandatory for specimen's discrimination. But the subsequent increasing amount of sequence data produced also a huge number of undescribed taxa that required determination. We compiled and used the public available ITS data on Terfezia spp. on the custom-curated UNITE database to reconstruct the genus phylogeny. We found at least 17 distinct lineages within the genus and successfully resolved some of the more pressing taxonomic issues, namely the T. leptoderma/olbiensis complex and some misapplied synonymy. Based on this resolved phylogeny, and motivated by the recent new described species, we proposed an identification key to Terfezia genus highlighting the importance of morphological and ecological characterization.
荒漠块菌（地下共生的子囊菌纲真菌）分布于全球干旱和半干旱地区，具有重要的生态和经济意义。Terfezia 无疑是所有荒漠块菌属中最多样化的属，但它的分类学远未得到解决。具体来说，大量新描述的物种加上在某些 Terfezia 谱系中观察到的高度种内形态变异性，使得分子技术成为鉴别标本的必要手段。但是，随后产生的大量序列数据也产生了大量需要确定的未描述分类单元。我们在定制的 UNITE 数据库中编译并使用了公共可用的 Terfezia spp. 的 ITS 数据来重建属的系统发育。我们在该属内发现了至少 17 个不同的谱系，并成功解决了一些更紧迫的分类问题，即 T. leptoderma/olbiensis 复合体和一些错误应用的同义词。基于这个已解决的系统发育，以及受最近新描述的物种的启发，我们提出了一个 Terfezia 属的鉴定钥匙，强调了形态和生态特征的重要性。
