Peroxisomes participate in photorespiration Microbodies were the original name for small single-membrane bound organelles. In plants these have been renamed peroxisomes and glyoxysomes. The peroxisome is shown with its crystalline matrix of catalase in Fig 1.23 on page 25. The glycolate is transferred into the peroxisome. This toxic material is enzymatically degraded to water and oxygen by the enzyme catalase.
Mitochondria are a third-partner in photorespiration.
Glyoxysomes participate in the glyoxylate cycle Glyoxysomes are abundant in oil storage tissues. This microbody contains the enzymes needed to degrade fatty acids into sugars to drive mitochondrial respiration. This degradation pathway is called the glyoxylate cycle. This organelle is active as the oils are removed from storage and put into use or exported for transport in phloem. The parter for glyoxysomes are oleosomes.