Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges
| Autor: | Fan Zhang, Chris D. Geddes, Jan Karolin, Russell T. Hill, Ryan J. Powell, Leah C. Blasiak |
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| Rok vydání: | 2015 |
| Předmět: |
Microorganism
Molecular Sequence Data Population chemistry.chemical_element Cyanobacteria Polyphosphate kinase chemistry.chemical_compound Bacterial Proteins Species Specificity Polyphosphates RNA Ribosomal 16S Commentaries Botany Animals Symbiosis education Ecosystem geography education.field_of_study Microscopy Confocal Multidisciplinary geography.geographical_feature_category biology Coral Reefs Phosphorus Polyphosphate fungi Biodiversity Coral reef biochemical phenomena metabolism and nutrition Biological Sciences biology.organism_classification Porifera Luminescent Proteins Sponge Microscopy Fluorescence chemistry Benthic zone Florida Microscopy Electron Scanning |
| Zdroj: | Proceedings of the National Academy of Sciences. 112:4381-4386 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.1423768112 |
| Popis: | Marine sponges are major habitat-forming organisms in coastal benthic communities and have an ancient origin in evolution history. Here, we report significant accumulation of polyphosphate (polyP) granules in three common sponge species of the Caribbean coral reef. The identity of the polyP granules was confirmed by energy-dispersive spectroscopy (EDS) and by the fluorescence properties of the granules. Microscopy images revealed that a large proportion of microbial cells associated with sponge hosts contained intracellular polyP granules. Cyanobacterial symbionts cultured from sponges were shown to accumulate polyP. We also amplified polyphosphate kinase (ppk) genes from sponge DNA and confirmed that the gene was expressed. Based on these findings, we propose here a potentially important phosphorus (P) sequestration pathway through symbiotic microorganisms of marine sponges. Considering the widespread sponge population and abundant microbial cells associated with them, this pathway is likely to have a significant impact on the P cycle in benthic ecosystems. |
| Databáze: | OpenAIRE |
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