In plants, similarly as in animals, an age-dependent irreversible process of changes leading to the arrest of CELL DIVISION and/or PROGRAMMED CELL DEATH.
In plants, similarly as in animals, an age-dependent irreversible process of changes leading to the arrest of CELL DIVISION and/or PROGRAMMED CELL DEATH.
The last stage of leaf development in which the leaf cells undergo an ordered process of disassembly of organelles and changes in gene expression and metabolism. During leaf senescence the chloroplasts breakdown and metabolism switches from photosynthesis to converting growth-phase accumulated materials into exportable nutrients for seed development, in annual plants; or to the stems and roots to be stored for the next season, in perennials.
