Stimulation of Phenylalanine Ammonia-lyase Activity and Lignification in Rice Callus Treated with Chitin, Chitosan, and Their Derivatives

Abstract

By treatment of rice callus with chitin, chitosan, or their derivatives, phenyl alanine ammonia-lyase activity was stimulated up to 2. 0 fold that of the control within 24h, chitinase activity up to 3. 5fold within 48h, and lignification up to 1. 7 fold within 72h. The elicitor activity was little affected by the chemical structure of the Nfatty acyl group (C2-C5) in chitosan.