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High photobiont diversity in the common European soil crust lichen Psora decipiens.
Biodiversity and Conservation ( IF 3.4 ) Pub Date : 2014-03-08 , DOI: 10.1007/s10531-014-0662-1
Ulrike Ruprecht 1 , Georg Brunauer 1 , Roman Türk 1
Affiliation  

The genetic diversity of green algal photobionts (chlorobionts) in soil crust forming lichens was studied as part of the SCIN-project (Soil Crust InterNational). A total of 64 lichen samples were collected from four different sites along latitudinal and altitudinal gradients in Europe (Tabernas/Spain; Hochtor-Großglockner/Austria; Gynge Alvar/Sweden; Ruine Homburg/Germany). The dominant lichen species at all four sites was Psora decipiens, often occurring with Buellia elegans, Fulgensia bracteata, F. fulgens and Peltigera rufescens. Genetic identification of chlorobionts was carried out using the nuclear marker (nrITS) and a chloroplast marker (psbL-J). We found P. decipiens to be associated with several different species of Trebouxia and Asterochloris, although previously described to only have Asterochloris sp. The phylogenetic analyses revealed a high chlorobiont diversity with 12 well supported clades, including Trebouxia asymmetrica, T. jamesii, T. impressa and other, as yet taxonomically unidentified clades (Trebouxia sp. URa1-4, T. sp. URa6, T. sp. URa7-13). Additionally, five clades of Asterochloris were identified (A. magna, A. sp. URa14 -17). Most of the chlorobiont species appeared to be cosmopolitan, but five clades were unevenly distributed between the sampling sites with only Trebouxia being found in the warm and dry Spanish habitats and combinations of Trebouxia and Asterochloris in the cooler and more humid habitats. The wide range of chlorobiont species might contribute to the observed domination of P. decipiens at all four research sites of the SCIN project which range from a desert in Spain to an alpine site in the Alps of Austria.

中文翻译:

欧洲常见土壤结皮地衣 Psora decipiens 的高光生物多样性。

作为 SCIN 项目(Soil Crust International)的一部分,研究了土壤结皮形成地衣中绿藻光生物(绿藻)的遗传多样性。从欧洲沿纬度和高度梯度的四个不同地点(Tabernas/西班牙;Hochtor-Großglockner/奥地利;Gynge Alvar/瑞典;Ruine Homburg/德国)共收集了 64 个地衣样品。所有四个地点的主要地衣物种是 Psora decipiens,通常与 Buellia elegans、Fulgensia bracteata、F. fulgens 和 Peltigera rufescens 一起出现。使用核标记(nrITS)和叶绿体标记(psbL-J)对绿生物进行遗传鉴定。我们发现 P. decipiens 与几种不同种类的 Trebouxia 和 Asterochloris 相关,尽管之前描述的只有 Asterochloris sp。系统发育分析揭示了具有 12 个良好支持的进化枝的高绿生物多样性,包括 Trebouxia asymmetrica、T. jamesii、T. impressa 和其他尚未在分类学上识别的进化枝(Trebouxia sp. URa1-4、T. sp. URa6、T. sp .URa7-13)。此外,还鉴定了 5 个 Asterochloris 进化枝(A. magna、A. sp. URa14 -17)。大多数绿藻物种似乎是世界性的,但五个进化枝在采样点之间分布不均,只有在温暖干燥的西班牙栖息地中发现了 Trebouxia,而在较冷和更潮湿的栖息地中发现了 Trebouxia 和 Asterochloris 的组合。在 SCIN 项目的所有四个研究地点,从西班牙的沙漠到奥地利阿尔卑斯山的高山地点,广泛的绿化生物物种可能有助于观察到 P. decipiens 的优势。
更新日期:2019-11-01
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