The Occurrence of Peroxide in a Perennial Plant, <i>Populus gelrica</i>

Abstract

A large amount of peroxide was found in twigs of poplar, Populus gelrica, which was grown in the field under natural conditions. The peroxide found in xylem and living bark was about 1.2 and 0.5 mumoles per gram dry weight sample, respectively, and served as a substrate both for catalase and cytochrome c peroxidase.