Polyamines, peroxidase and proteins involved in the senescence process

Abstract

Senescence is the natural aging process at the cellular level or range of phenomena associated with this process. The objective of this review was to show the involvement of substances that may be related to senescence in plants, such as polyamines, peroxidase and proteins. These substances were related with the terminal stages of development of various plant organs (leaves, flowers, roots).

Thermal Inactivation of Crude Polyphenol Oxidases and Peroxidase from Three Tissues of Yellow-fleshed Cassava (Manihot esculenta Crantz) Root cv. Bocou 2

“…The damages due to mechanical injuries during the harvest lead to a contact between PPO and POD with phenolic compounds and oxygen in the air. These PPO and POD catalyse the oxidation of phenolic compounds thereby producing undesirable pigments [8]. Indeed, enzymes such as phenylalanine ammonia-lyase, polyphenol oxidases and peroxidases are involved in the PPD process of the cassava root [9].…”