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首页> 外文期刊>Mycologia >Disentangling the complex of Lichenothelia species from rock communities in the desert
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Disentangling the complex of Lichenothelia species from rock communities in the desert

机译：从沙漠中的岩石群落中解开苔藓菌属物种的复合体

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摘要

Rock-inhabiting fungi (RIF) are melanized, meristematic fungi which dwell on and within rocks and have adapted to withstand harsh conditions in extreme habitats worldwide. Their morphological and genetic diversity remained unknown for a long time, but in the past few years culture-dependent and molecular phylogenetic approaches have contributed to uncovering the species richness of these otherwise very inconspicuous fungi. Only a few taxa of RIF develop both sexual reproductive structure (fertile stromata and/or pycnidia) and show multiple life styles, interacting with algae and lichen thalli in different ways. The genus Lichenothelia is one of these: It is characterized by fertile stromata and pycnidia and by species which can grow on and within exposed rocks, optionally associating with algae, with some species also being lichenicolous. The genus Lichenothelia includes up to now 25 species and form a monotypic family (Lichenotheliaceae) and order (Lichenotheliales) in Dothideomycetes. Here we focused on a group of Lichenothelia taxa distributed in the hot arid region of the Sonoran and Mojave Deserts in the Joshua Tree National Park in California. We performed molecular and morphological analyses and culture isolation and considered the ecology of the environmental samples to disentangle five species. We present the revision of two species already described, Lichenothelia calcarea and L. convexa, and introduce three new taxa to science, L. arida, L. umbrophila and L. umbrophila var. pullata.
机译：居住在岩石上的真菌（RIF）是一种黑色素，分生真菌，它生活在岩石上和岩石内，并适应了世界各地极端栖息地的严酷条件。它们的形态和遗传多样性在很长一段时间内仍然是未知的，但是在过去几年中，依赖于文化的培养和分子系统发育方法有助于揭示这些原本不起眼的真菌的物种丰富性。 RIF中只有少数类群同时具有性生殖结构（肥沃的地层和/或孢子虫），并表现出多种生活方式，以不同的方式与藻类和地衣藻相互作用。地衣菌属是其中之一：它的特征是肥沃的地层和孢子虫，以及可以在裸露的岩石之上和之内生长的物种，可以选择与藻类结合，某些物种也为地衣性。地衣菌属目前包括25种，在十二指肠菌科中形成了单型科（地衣菌科）和科（地衣菌科）。在这里，我们集中研究了分布在加利福尼亚约书亚树国家公园的索诺兰沙漠和莫哈韦沙漠热干旱地区的一组苔藓类植物。我们进行了分子和形态分析以及培养物分离，并考虑了环境样品的生态学来区分五种。我们介绍已经描述的两个物种的修订版本，即苔藓苔藓和凸乳杆菌，并向科学引入了三个新的分类群，即阿里达乳杆菌，伞形乳杆菌和伞形乳杆菌var。 Pullata。

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