Phosphorus turnover

Benitez-Nelson, C. R. and Buesseler, K. O. (1999). Variability of inorganic and organic phosphorus turnover rates in the coastal ocean. Nature 398, 502-505. 

Similarly, Joergensen and Castillo (2001) could not exclude the possibility that the fungi in the Nicaraguan soils they studied contained low ergosterol contents. Nevertheless, fungal-to-bacterial-biomass ratios are of interest because the two groups contribute differently to specific functions in the phosphorus cycle, react differently to environmental and nutritional factors, and in turn affect microbial phosphorus turnover (see below). 

Microbial phosphorus turnover also takes place in the absence of net changes in the microbial biomass. Isotope studies suggest that related phosphorus fluxes are important, but the underlying processes in soils are not well understood. Studies should test whether diffusion and efflux from microbial cells are important. Models would help to integrate different processes and factors related to gross phosphorus mineralization and microbial phosphorus turnover in general. 

McLaughlin, M.J., Alston, A.M. and Martin, J.K. (1988b) Phosphorus cycling in wheat-pasture rotations. III. Organic phosphorus turnover and phosphorus cycling. Australian Journal of Sol Research 26, 343-353. 

Effect of Insulin on the Phosphorus Turnover in Liver. Insulin and glucose administrations have a marked influence on acid-soluble P content of liver (103). Rats, weighing about 200 g., were fasted for a period of twelve hours, given the treatment shown in the table, and then injected intraperitoneally with trace doses of labeled sodium phosphate. The results obtained are seen in Table VIII. 

---