CAM photosynthesis
The combination of atmospheric CO2 with a 3-carbon molecule phosphoenol pyruvate (PEP) to make malic acid. The malic acid is then passed into the vacuole where it is stored until daylight, when it is shuttled back out to be used as a substrate in the light reaction of photosynthesis.
GO:0015977
carbon fixation
is_a
GO:0019685
photosynthesis, dark reaction
is_a