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Recognizing novel cyanobacterial diversity in marine benthic mats, with the description of Sirenicapillariaceae fam. nov ., two new genera, Sirenicapillaria gen. nov . and Tigrinifilum gen. nov ., and seven new species

2022; Taylor & Francis; Volume: 61; Issue: 2 Linguagem: Inglês

10.1080/00318884.2021.2006589

2330-2968

David E. Berthold, Forrest W. Lefler, Haywood Dail Laughinghouse,

Marine Biology and Ecology Research

Marine benthic proliferations are increasing in occurrence, range and duration by way of anthropogenic nutrient loading and climate change. The spread of these cyanobacteria within a variety of regions has made it fundamental to recognize the diversity and the species involved in these blooms. To expand knowledge on marine cyanobacterial diversity and reveal their phylogenetic relationships, sampling and isolation of benthic proliferative events from underexplored regions were conducted in the USA (Florida) and France (Loire-Atlantique). Cyanobacteria were described with the polyphasic approach using morphology, 16S rRNA gene phylogeny, 16S–23S rRNA ITS secondary structures and pairwise distances. Sampling of marine cyanobacteria from seagrasses, lagoons and marine coastal waters from nine Florida localities, in addition to Florida freshwater canals and French salt flats, revealed floating, epipsammic and epiphytic mats. A total of 30 cyanobacteria were isolated of which 21 represented two novel genera, Sirenicapillaria and Tigrinifilum. Sirenicapillaria is a genus that is found in massive benthic blooms throughout the western and southern Florida Coast.