Basidiolichens are generally poorly researched because of the very small number of species and their restriction to special niches. Lichenomphalia basidiolichens grow in considerable quantities in arctic and alpine habitats but they are inadequately studied in these habitats in Mediterranean areas. Based on morphological and phylogenetic analyses, we identified the different symbionts of L. meridionalis, collected in localities in Spain at altitudes ranging from 533 to 2200 m above sea level. The present study provides the first molecular data available for L. meridionalis. We found that a microindel of six bp within the nrITS2 could help to discriminate L. meridionalis from other species of the genus. Molecular analyses revealed the existence of two different green algal strains, both belonging to Coccomyxa subellipsoidea, a species shared with other Lichenomphalia lichens. Notably, the two chlorobiont strains associated with L. meridionalis were differentially distributed according to altitude, and samples having one of the two strains consistently also included cyanobacteria.

中文翻译：

---

basidiolichen Lichenomphalia meridionalis 的共生组成随伊比利亚半岛的海拔高度而变化

Basidiolichens 的研究通常很少，因为它们的物种数量非常少，而且它们仅限于特殊的生态位。苔藓虫basidiolichens 在北极和高山生境中大量生长，但在地中海地区的这些生境中研究不足。基于形态学和系统发育分析，我们确定了不同的共生体L. meridionalis，收集于西班牙海拔 533 至 2200 米的地方。本研究提供了第一个可用的分子数据L. meridionalis. 我们发现 nrITS2 中的一个 6 bp 的 microindel 可以帮助区分L. meridionalis来自该属的其他物种。分子分析表明存在两种不同的绿藻菌株，均属于球囊亚椭圆形, 一个与其他物种共享的物种苔藓虫地衣。值得注意的是，与L. meridionalis根据海拔高度差异分布，并且具有两种菌株之一的样品始终包括蓝藻。