Effects of acetate on facultative autotrophy in Chlamydomonas reinhardtti assessed by photosynthetic measurements and stable isotope analysis
The green alga Chlamydomonas reinhardtii can grow photoautotrophically utilizing CO2, heterotrophically utilizing acetate, and mixotrophically utilizing both carbon sources. Growth of cells in increasing concentrations of acetate plus 5% CO2 in liquid culture progressively reduced photosynthetic CO2 fixation and net O2 evolution without effects on respiration, photosystem II efficiency (as measured by chlorophyll fluorescence), or growth. Using the technique of on-line oxygen isotope ratio mass...[Show more]
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