The Physiology of Sugar-Cane VIII. Diurnal Fluctuations in The Activity of Soluble Invertase in Elongating Internodes

Abstract

The activity of acid invertase in the storage compartment of elongating internode cells of sugar-cane stems fluctuates several fold during a single day, reaching a maximum early in the morning and falling to a minimum late in the afternoon. Parallel fluctuations in either protein content or hexokinase activity did not occur.