The chemical reactions and pathways resulting in the formation of ethylene (C2-H4, ethene), a simple hydrocarbon gas that can function in plants as a growth regulator.
Synonyms:
exact_synonym:
ethene biosynthesis; ethene biosynthesis from L-methionine; ethene biosynthetic process; ethene biosynthetic process from L-methionine; ethylene anabolism; ethylene biosynthesis; ethylene biosynthesis from L-methionine; ethylene biosynthetic process from L-methionine; ethylene formation; ethylene synthesis