Document Detail

The effect of monobasic sodium phosphate on statolith synthesis in aurelia.
MedLine Citation:
PMID:  6120564     Owner:  NLM     Status:  MEDLINE    
The effect of monobasic sodium phosphate on statolith synthesis in Aurelia metamorphosing in artificial sea water (ASW) and in low sulfate ASW was determined. Phosphate enhances statolith synthesis in organisms metamorphosing in ASW and restores statolith numbers to normal or above in organisms developing in low sulfate ASW. A small amount of sulfate must be present in the medium along with phosphate during the time period of statolith synthesis for normal statolith formation. Apparently, neither sulfate nor phosphate is stored in the organisms during early strobilation for later use in statolith synthesis because pre-treatment of either ion in early strobilation followed by treatment with the other ion does not result in statolith formation. Calcifying vesicles of the rhopalia of organisms from low sulfate ASW are normal in number, acid phosphatase activity, and in ability to initiate mineralization (by forming minute statoliths). While phosphate is not incorporated directly into the statoliths, it contributes to an efficient uptake of calcium and sulfur into the cells and/or calcifying vesicles, stimulating growth of calcium sulfate dihydrate statoliths. The high efficiency of the phosphate effect in enhancing statolith synthesis intracellularly demonstrates that phosphate acts at the cellular level in the jellyfish calcification process and emphasizes that phosphate probably plays multiple roles in the calcification of higher organisms.
D B Spangenberg
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Scanning electron microscopy     Volume:  -     ISSN:  0586-5581     ISO Abbreviation:  Scan Electron Microsc     Publication Date:  1981  
Date Detail:
Created Date:  1982-04-12     Completed Date:  1982-04-12     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0371617     Medline TA:  Scan Electron Microsc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  355-62     Citation Subset:  IM; S    
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MeSH Terms
Calcification, Physiologic* / drug effects
Cnidaria / physiology*
Electron Probe Microanalysis
Microscopy, Electron, Scanning
Models, Biological
Phosphates / pharmacology*
Scyphozoa / anatomy & histology,  physiology*
Sulfates / pharmacology
Grant Support
Reg. No./Substance:
0/Phosphates; 0/Sulfates; 7632-05-5/sodium phosphate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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