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Pneumatocyst

This article is about algae. For lung and other pneumatocysts, seepneumatocele. For the similarly pronounced stinging cells, seenematocyst.

Inphycology, apneumatocyst is a floating structure that contains gas found onbrownseaweed. A seaweed'sthallus may have more than one. They providebuoyancy to lift the blades toward the surface, allowing them to receive more sunlight forphotosynthesis.

Floating kelp (Macrocystis pyrifera) with many pneumatocysts

The proportion of gases in the pneumatocysts varies depending on the physiological status of the alga and the partial pressure of gases in the surrounding air or water.[1] The pneumatocyst can holdO2,CO2,N2,[1] andCO.[2]

Pneumatocyst fromNereocystis luetkeana

References

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  1. ^abThiel, M.; L. Gutow (2005). "The Ecology of rafting in the marine environment".Oceanography and Marine Biology: An Annual Review.42. The Floating Substrata:181–264.
  2. ^Foreman, Ronald E. (1976). "Physiological aspects of carbon monoxide production by the brown algaNereocystis luetkeana".Botany.54 (3–4):352–360.doi:10.1139/b76-032.ISSN 1916-2804.

Further reading

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Plouguerne, Erwan; Cesconetto, Criscia; Cruz, Camila P.; Pereira, Renato C.; da Gama, Bernardo A. P. (December 2012). "Within-thallus variation in polyphenolic content and antifouling activity in Sargassum vulgare".Journal of Applied Phycology.24 (6): 1629.doi:10.1007/s10811-012-9826-0.S2CID 17743874.


 

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