Nitrogen Uptake and Growth

Berg, G.M., Ghbert, P.M., Lomas, M.W., and Burford, M. (1997) Organic nitrogen uptake and growth by the Chrysophyte Aurecoccus anophaeefferens during a brown tide event. Mar. Biol. 129, 377-387. 

Identifying Microorganisms Involved in Nitrogen Uptake 6. Nitrogen Uptake and Growth... 

Figure 30.3 Difference between nitrogen uptake and growth kinetics from experiments, after Zehr et al. (1988). Short-term uptake kinetics (A) are driven by membrane transport processes, and usually exceed assimilation and incorporation into protein. Short-term uptake declines as feedback from internal pools and regulatory mechanisms are affected by influx of N. (B) Longer term N uptake is driven by protein synthesis rate, which is equivalent to the growth rate. (C) Model of competition between two species showing that competition can be affected by both transport and growth.

DeLaune, R. D., S. R. Pezeshki, and C. W. Lindau. 1998. Influence of soil redox potential on nitrogen uptake and growth of wetland oak seedlings. J. Plant Nutr. 21 757-768. 

Dortch, Q., Thompson, P. A., and Harrison, P. J. (1991a). Short-term interaction between nitrate and ammonium uptake in Thalassiosira pseudonana Effect of preconditioning nitrogen source and growth rate. Mar. Biol. 110, 183—193. 

Kokkinakis, S. A., and Wheeler, P. A. (1987). Nitrogen uptake and phytoplankton growth in coastal upweUing regions. Limnol. Oceanogr. 32, 1112—1123. 

Nickel is required by plants when urea is the source of nitrogen (Price and Morel, 1991). Bicarbonate uptake by cells may be limited by Zn as HCOT transport involves the zinc metal-loenzyme carbonic anhydrase (Morel et al., 1994). Cadmium is not known to be required by organisms but because it can substitute for Zn in some metalloenzymes it can promote the growth of Zn-limited phytoplankton (Price and Morel, 1990). Cobalt can also substitute for Zn but less efficiently than Cd. 

Tolley MD, DeLaune RD, Patrick WH. The effect of sediment redox potential and soil acidity on nitrogen uptake, anaerobic root respiration, and growth of rice (Oryza saliva). Plant Soil. 1986 93 323-331. 

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