Isocitrate lyase (ICL, AT3G21720), is an enzyme in the glyoxylate cycle that catalyzes the cleavage of isocitrate to succinate and glyoxylate. It is a peroxisomal glyoxylate cycle enzyme necessary for early seedling
TUB1 is beta tubulin gene downregulated by phytochrome A (phyA)-mediated far-red light high-irradiance and the phytochrome B (phyB)-mediated red light high-irradiance responses.