Department of Plant Biology (Botany Unit), Facultat de Biologia, Universitat de Barcelona, Avenida Diagonal 645, 08028 Barcelona, Spain.
Mycologia. 2011 Jul-Aug;103(4):755-63. doi: 10.3852/10-287. Epub 2011 Apr 6.
The monotypic, lichen-forming genus Ingvariella originally was segregated from Diploschistes and placed within the Thelotremataceae (Ostropales) based on aspects of exciple morphology. However, the I+ hymenium and amyloid ascus wall suggest affinities to families other than the Thelotremataceae. To assess the identity of Ingvariella and to investigate its placement within the Ostropales, we inferred phylogenetic relationships of I. bispora by comparison of mtSSU rDNA and nuLSU rDNA sequences for 59 species encompassing a broad array of ostropalean fungi by means of Bayesian, maximum likelihood and weighted maximum parsimony methods. Here we report that Ingvariella is a member of the Stictidaceae, sister to the mainly saprotrophic genus Cryptodiscus. The inclusion of the first saxicolous lichen-forming fungus within this family expands the broad ecological diversity of the Stictidaceae, where saprotrophic fungi, corticicolous lichen-forming fungi and lichenized and non-lichenized conspecific taxa have been described previously. We also present new insights into the relationships among other families within the Ostropales.
单种的地衣型真菌 Ingvariella 最初是根据外囊盘菌的形态特征从 Diploschistes 中分离出来的，并被归入 Thelotremataceae（Ostropales）。然而，其 I+子实层和淀粉质囊壳壁表明与 Thelotremataceae 以外的科具有亲缘关系。为了评估 Ingvariella 的身份并研究其在 Ostropales 中的位置，我们通过贝叶斯、最大似然和加权最大简约法比较了 59 种 ostropalean 真菌的 mtSSU rDNA 和 nuLSU rDNA 序列，包括广泛的 ostropalean 真菌，以比较 I. bispora 的系统发育关系。在这里，我们报告 Ingvariella 是 Stictidaceae 的成员，与主要是腐生的属 Cryptodiscus 是姐妹关系。这个家族中第一个石生地衣型真菌的包含扩大了 Stictidaceae 的广泛生态多样性，先前已经描述了腐生真菌、皮层地衣型真菌和地衣化和非地衣化的同物种类。我们还提供了关于 Ostropales 内其他科之间关系的新见解。
