Highlighting Theodor W. Engelmann's “Farbe und Assimilation” [Color and Assimilation]
DOI: https://doi.org/10.1002/lob.10470
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9908
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9908
Hintz, Nils Hendrik, 2021: Highlighting Theodor W. Engelmann's “Farbe und Assimilation” [Color and Assimilation]. In: Limnology and Oceanography Bulletin, Band 30, 4: 121 - 126, DOI: 10.1002/lob.10470.
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In 1883, Theodor Wilhelm Engelmann, a German scientist, wrote his essay “color and assimilation” (Ger.: “Farbe und Assimilation”) describing the state of the art in photosynthesis research, his recent findings, and further assumptions based upon his presented results. Nearly 140 years later, many of his assumptions were proven correct. By his still well‐known bacteria experiments using aerotactic, heterotrophic bacteria, he identified the chloroplasts as the location in which photosynthesis and oxygen production takes place. Furthermore, by evaluating the effects of different light spectra, he constructed the first action spectra that demonstrated the implication of the “green gap” of chlorophylls. He further posited that accessory photosynthetic pigments existed to extend the absorption range of chlorophyll. Although infrequently cited, his work was foundational for current ecological research of the vertical appearance of algae species within the underwater gradient in light spectrum due to specific harvesting of different light spectra, hence complementary chromatic adaptation of communities. This short retrospective highlights this piece of literature that represents an early step toward our current understanding of ecological competition for light spectra.
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