Time Course of Acetylene Reduction in Nodules of Five Actinorhizal Genera

Document Type

Article

Journal/Book Title

Plant Physiology

Publication Date

1-1-1988

Volume

86

First Page

581

Last Page

583

Abstract

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.

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