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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http://dx.doi.org/10.1111/jpy.12621 | DOI Listing |
J Low Genit Tract Dis
January 2025
Dermatology Department, University of Brescia, ASST Spedali Civili di Brescia, Brescia, Italy.
Plant Cell Physiol
December 2024
Department of Life Sciences, University of Trieste, via L. Giorgieri 10, 34127, Trieste, Italy.
In lichens, accurate description of thallus water status is required to understand growth and photosynthesis dynamics. A recent model suggested that myco- and photobiont layers could have a different water energy status (i.e.
View Article and Find Full Text PDFMicroorganisms
June 2023
Instituto Cavanilles de Biodiversidad y Biología Evolutiva (ICBiBE), Botánica, Universitat de València, C/Dr. Moliner, 50, 46100 Burjassot, Spain.
is an epiphytic lichen-forming fungus mainly distributed in Western Europe and Macaronesia in well-structured forests with ecological continuity that lack eutrophication. It is considered to be threatened or extinct in many territories in Europe (IUCN). Despite its biological and ecological relevance, studies on this taxon are scarce.
View Article and Find Full Text PDFJ Oral Pathol Med
May 2023
Department of Oral Mucosal Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Background: Oral lichen planus (OLP) is a mucocutaneous inflammatory disease affecting 1% general population. Tripartite motif-containing protein 21 (TRIM21) shows a significant role in OLP. This study aimed to explore the function and mechanism of TRIM21 in T cells of OLP.
View Article and Find Full Text PDFAm J Transl Res
August 2020
Department of Oral Medicine, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine Shanghai 200011, China.
Unlabelled: Oral lichen planus (OLP) is a common chronic inflammatory disease in the oral cavity, and has the risk of developing into oral squamous cell carcinoma (OSCC). It is necessary to discover the role of TRIM21 in the pathogenesis of OLP and its underlying mechanism.
Methods: Western bolt and qPCR assays were used to detect the effects of TRIM21 on cellular levels of ERK, p-ERK, AP-1, IL-6, TRIB2, IRF3, and IRF7, while co-immunoprecipitation was performed to verify the interaction between Trim21 and TRIB2 protein.
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