Time course of acetylene reduction in nodules of five actinorhizal genera
The rate of acetylene reduction was measured as a function of time after addition of 10% acetylene in Alnus, Casuarina, Ceanothus, Datisca, and Myrica. The maximum rate occurred after 45 to 60 seconds and was maintained for an additional 0.5 to 4 minutes before a decline in rate to 30 to 90% of the maximum. The rate then recovered to a value of 63 to 98% of the maximum. Removal of the shoot and lower roots did not affect nodule activity.
Tjepkema, J.D., Schwintzer C.R. and Monz, C.A. 1988. Time course of acetylene reduction in nodules of five actinorhizal genera. Plant Physiology 86: 581-‐‐583.