Evidence suggests that diatom photorespiratory metabolism is distinct from other
photosynthetic eukaryotes in that there may be at least two routes for the metabolism of the
photorespiratory metabolite glycolate. One occurs primarily in the mitochondria and is
similar to the C2 photorespiratory pathway, and the other processes glycolate through the
peroxisomal glyoxylate cycle. Genomic analysis has identified the presence of key genes
required for glycolate oxidation, the glyoxylate cycle, and malate metabolism, however …