Relation between Ribulose Bisphosphate Carboxylase Content and Chloroplast Number in Naturally Senescing Primary Leaves of Wheat

摘要

The amounts of ribulose bisphosphate carboxylase protein decreased rapidly with leaf age to a low content by the middle stage of senescence. In contrast, the decrease in chloroplast number was slight during the same period. This indicates that the enzyme can be degraded within the chloroplast before the chloroplasts disintegrate during senescence.