protochlorophyllide
Noun
Meaning
protochlorophyllide (plural protochlorophyllides)
(biochemistry) Any of several fluorescent pigments that are converted to chlorophyll by photoconversion.
Examples
Plants that are fed by ALA accumulate high and toxic levels of protochlorophyllide; so do the mutants with the damaged regulatory system.
In Angiosperm plants, the last step, conversion of protochlorophyllide to chlorophyll, is light-dependent and such plants are pale ( etiolated ) if grown in the darkness.