The forms of native chlorophyll in Chlamydobotrys stellata and their changes during adaptation from photo-heterotrophic to autotrophic growth.

Absorption and fluorescence spectra were measured for Chlamydobotrys stellata cultured either photo-heterotrophically on acetate or autotrophically on CO2 as well as during adaptation from hetero- to autotrophic conditions. Curve analyses of the absorption spectra at liquid nitrogen temperature suggest the presence of chlorophyll-a forms with their main absorption peaks at 663, 670, 678, 685, 693 and 707 nm. The proportion of the longer wavelength forms, 685, 693 and 707 nm, decreases during adaptation to autotrophic growth. The chlorophyll-b content of the photo-heterotrophic culture was very low.