Storage Lipids Are Converted into Carbohydrates in Germinating Seeds

Metabolization Seed Storage Cycle

After germinating, oil-containing seeds metabolize stored triacylglycerols by converting lipids to sucrose. Plants are not able to transport fats from the endosperm to the root and shoot tissues of the germinating seedling, so they must convert stored lipids to a more mobile form of carbon, generally sucrose. This process involves several steps that are located in different cellular compartments oleosomes, gly-oxysomes, mitochondria, and cytosol. Overview Lipids to sucrose. The conversion of...

Mitochondria Are Semiautonomous Organelles

The breakdown of sucrose to pyruvate releases less than 25 of the total energy in sucrose the remaining energy is stored in the two molecules of pyruvate. The next two stages of respiration (the citric acid cycle and oxidative phosphorylation i.e., electron transport coupled to ATP synthesis) take place within an organelle enclosed by a double membrane, the mitochondrion (plural mitochondria). In electron micrographs, plant mitochondria whether in situ or in vitro usually look spherical or...