Title

Comparison Of The Anaerobic Microbiota Of Deep-Water Geodia Spp. And Sandy Sediments In The Straits Of Florida

Keywords

Anaerobic culture; FISH; Geodia spp.; Marine sediment

Abstract

Marine sediments and sponges may show steep variations in redox potential, providing niches for both aerobic and anaerobic microorganisms. Geodia spp. and sediment specimens from the Straits of Florida were fixed using paraformaldehyde and 95% ethanol (v/v) for fluorescence in situ hybridization (FISH). In addition, homogenates of sponge and sediment samples were incubated anaerobically on various cysteine supplemented agars. FISH analysis showed a prominent similarity of microbiota in sediments and Geodia spp. samples. Furthermore, the presence of sulfate-reducing and annamox bacteria as well as other obligate anaerobic microorganisms in both Geodia spp. and sediment samples were also confirmed. Anaerobic cultures obtained from the homogenates allowed the isolation of a variety of facultative anaerobes, primarily Bacillus spp. and Vibrio spp. Obligate anaerobes such as Desulfovibrio spp. and Clostridium spp. were also found. We also provide the first evidence for a culturable marine member of the Chloroflexi, which may enter into symbiotic relationships with deep-water sponges such as Geodia spp. Resuspended sediment particles, may provide a source of microorganisms able to associate or form a symbiotic relationship with sponges. © 2010 International Society for Microbial Ecology All rights reserved.

Publication Date

5-1-2010

Publication Title

ISME Journal

Volume

4

Issue

5

Number of Pages

686-699

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1038/ismej.2009.149

Socpus ID

77951499290 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77951499290

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