Photoconvertible and non-photoconvertible forms of protochlorophyll(ide) in etiolated bean leaves

摘要

Precursors of chlorophylls in etiolated bean leaves were studied by a sensitive technique of dual wavelength scanning of thin layer chromatograms of pigments. The photoconvertible pigments with absorption maxima at 650 and 638 nm, respectively, were identified as protochlorophyllide. A minor non-photoconvertible pigment with a maximum at 628 nm was found to be protochlorophyll.