Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 160, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2020.107010
Keywords
16S rRNA phylogeny; Culture collection; Oscillatoriales; Cyanobacterial mats; ITS secondary structure; Mangroves; Marina
Funding
- USDA National Institute of Food and Agriculture Hatch project [FLAFTL005697]
- University of Florida/IFAS Early Career Seed Fund program
- Florida Sea Grant College Program of the National Oceanic and Atmospheric Administration (NOAA) [NA 18OAR4170085]
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The study identified three new genera and four new species of marine cyanobacteria in the coastal ecosystems of South Florida, characterized by discoid cells, homocytous unbranched filaments, and discoid apical cells.
Benthic cyanobacterial mats are an integral component of aquatic communities in tropical marine waters. These mats can develop into massive nuisances at risk of expansion due to climate change. The extent of diversity occurring within these mats, still remains largely unexplored, especially in Florida. To reveal this diversity, coastal environments of South Florida were sampled and subsequently processed for isolation and systematic identification. Three new genera are proposed based on the molecular phylogeny, morphology, and ecology. These new genera are characterized by discoid cells and homocytous, unbranched filaments without sheaths. Individual genus morphological differences include either rounded bent, rounded, or conical rounded apical cells. A unique molecular fingerprint including a base pair insert within the 16S rRNA gene sequence and genetic similarities facilitates the delimitation of a novel family Vermifilaceae. Using the polyphasic approach, our research presents three new genera and four new species of marine cyanobacteria inhabiting coastal ecosystems of South Florida.
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