TY - JOUR
T1 - A theoretical explanation of the priming effect based on microbial growth with two limiting substrates
AU - Parnas, Hanna
PY - 1976
Y1 - 1976
N2 - A theoretical and experimental analysis of the effects of substrate ratio on microbial growth is presented. The effects of change in the ratio of two substrates (C and N) is given as an example for the theoretical model. Average growth rate (population biomass at time t, divided by t), as opposed to steady-state growth rate, is introduced as a better measure of growth rate in a changing environment. The main results of the theoretical model and the experimental example are: (a) microbial population yield at the stationary phase is maximal when the initial ratio between the substrates, equals the stoichiometric ratio (the required ratio for growth); (b) the time in which the population is growing until it reaches the stationary phase, is also maximal when the initial ratio equals the stoichiometric ratio; (c) the average growth rate as a function of the initial. C/N ratio approaches a curve with one maximum point which is when the initial ratio equals the stoichiometric ratio. The results of the dependence of the average growth rate on the C/N ratio of the substrate are used to explain the "priming effect".
AB - A theoretical and experimental analysis of the effects of substrate ratio on microbial growth is presented. The effects of change in the ratio of two substrates (C and N) is given as an example for the theoretical model. Average growth rate (population biomass at time t, divided by t), as opposed to steady-state growth rate, is introduced as a better measure of growth rate in a changing environment. The main results of the theoretical model and the experimental example are: (a) microbial population yield at the stationary phase is maximal when the initial ratio between the substrates, equals the stoichiometric ratio (the required ratio for growth); (b) the time in which the population is growing until it reaches the stationary phase, is also maximal when the initial ratio equals the stoichiometric ratio; (c) the average growth rate as a function of the initial. C/N ratio approaches a curve with one maximum point which is when the initial ratio equals the stoichiometric ratio. The results of the dependence of the average growth rate on the C/N ratio of the substrate are used to explain the "priming effect".
UR - http://www.scopus.com/inward/record.url?scp=0004042183&partnerID=8YFLogxK
U2 - 10.1016/0038-0717(76)90079-1
DO - 10.1016/0038-0717(76)90079-1
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AN - SCOPUS:0004042183
SN - 0038-0717
VL - 8
SP - 139
EP - 144
JO - Soil Biology and Biochemistry
JF - Soil Biology and Biochemistry
IS - 2
ER -