期刊
JOURNAL OF PHYCOLOGY
卷 54, 期 2, 页码 224-233出版社
WILEY
DOI: 10.1111/jpy.12621
关键词
16S rDNA gene; 16S-23S ITS; biodiversity; cyanolichen; taxonomy
资金
- Department of Biology (UNF)
- Coastal Biology Flagship program (UNF)
- Internal Grant Agency of Palacky University in Olomouc [PrF-2017-001]
Cyanolichens are an assemblage of fungi and cyanobacteria from diverse, cosmopolitan habitats. Typically composed of a single species of cyanobacterium, with or without another eukaryotic alga, here we present two novel cyanobionts isolated from an undescribed tripartite lichen. This endolithic lichen was isolated from a granite cemetery tombstone from Jacksonville, FL, and contains two potentially nitrogen-fixing cyanobionts. Employing a total evidence approach, we characterized the cyanobionts using molecular (the 16S rDNA and ITS gene region), morphological, and ecological data. Phylogenetic analyses revealed two novel taxa: Brasilonema lichenoides and Chroococcidiopsis lichenoides, both of which fell within well-supported clades. To our knowledge, this represents the first instance of a tripartite lichen with two cyanobacterial and no eukaryotic members. These types of lichens may well represent an unexplored reservoir of cyanobacterial diversity. The specific epithets are proposed under the provisions of the International Code of Nomenclature for algae, fungi, and plants.
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