Magaña-Dueñas Viridiana, Cano-Lira José Francisco, Stchigel Alberto Miguel
Mycology Unit, Medical School, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Tarragona, Spain.
J Fungi (Basel). 2021 Dec 20;7(12):1102. doi: 10.3390/jof7121102.
The are a class of cosmopolitan fungi that are present principally in terrestrial environments, but which have also been found in freshwater and marine habitats. In the present study, more than a hundred samples of plant debris were collected from various freshwater locations in Spain. Its incubation in wet chambers allowed us to detect and to isolate in pure culture numerous fungi producing asexual reproductive fruiting bodies (conidiomata). Thanks to a morphological comparison and to a phylogenetic analysis that combined the internal transcribed spacer (ITS) region of the nrDNA with fragments of the RNA polymerase II subunit 2 (2), beta tubulin (2), and the translation elongation factor 1-alpha (1) genes, six of those strains were identified as new species to science. Three belong to the family and ; and three belong to the family and . The finding of these new taxa significantly increases the number of the coelomycetous fungi that have been described from freshwater habitats.
这些是一类世界性的真菌，主要存在于陆地环境中，但也在淡水和海洋栖息地中被发现。在本研究中，从西班牙的不同淡水地点收集了一百多个植物残体样本。在湿室中对其进行培养，使我们能够检测并在纯培养中分离出许多产生无性繁殖子实体（分生孢子器）的真菌。通过形态学比较以及将nrDNA的内部转录间隔区（ITS）区域与RNA聚合酶II亚基2（2）、β微管蛋白（2）和翻译延伸因子1-α（1）基因的片段相结合的系统发育分析，其中六个菌株被鉴定为科学上新的物种。三个属于 科和 属；另外三个属于 科和 属。这些新分类群的发现显著增加了已从淡水栖息地描述的腔孢纲真菌的数量。
