Journal
ARCHIVES OF MICROBIOLOGY
Volume 195, Issue 12, Pages 853-859Publisher
SPRINGER
DOI: 10.1007/s00203-013-0937-z
Keywords
Montastraea cavernosa; Nitrogen fixation; nifH; Coral holobiont
Categories
Funding
- National Science Foundation
- National Geographic Society
- National Oceanic and Atmospheric Administration National Institute of Undersea Science and Technology
- University of New Hampshire Marine Program
- American Museum of Natural History Lerner-Grey Fellowship for Marine Research
- Division Of Ocean Sciences
- Directorate For Geosciences [1231468] Funding Source: National Science Foundation
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Previous research on the Caribbean coral Montastraea cavernosa reported the presence of cyanobacterial endosymbionts and nitrogen fixation in orange, but not brown, colonies. We compared the diversity of nifH gene sequences between these two color morphs at three locations in the Caribbean and found that the nifH sequences recovered from M. cavernosa were consistent with previous studies on corals where members of both the alpha-proteobacteria and cyanobacteria were recovered. A number of nifH operational taxonomic units (OTUs) were significantly more abundant in the orange compared to the brown morphs, and one specific OTU (OTU 17), a cyanobacterial nifH sequence similar to others from corals and sponges and related to the cyanobacterial genus Cyanothece, was found in all orange morphs of M. cavernosa at all locations. The nifH diversity reported here, from a community perspective, was not significantly different between orange and brown morphs of M. cavernosa.
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