Photoheterotroph

Photoheterotroph

Photoheterotrophs (or photoorganotrophs) ("Gk": photo = light, hetero = (an)other, troph = nourishment) are heterotrophic organisms which use light for energy, but cannot use carbon dioxide as their sole carbon source. Consequently, they use organic compounds from the environment to satisfy their carbon requirements. They use compounds such as carbohydrates, fatty acids and alcohols as their organic "food". Examples are purple non-sulfur bacteria, green non-sulfur bacteria and heliobacteria [cite journal
author=D.A. Bryant & N.-U. Frigaard
month=Nov
year=2006
title=Prokaryotic photosynthesis and phototrophy illuminated
journal=Trends Microbiol.
volume=14
issue=11
pages=488
doi=10.1016/j.tim.2006.09.001] .

Flowchart

*Autotroph
**Chemoautotroph
**Photoautotroph
*Heterotroph
**Chemoheterotroph
**Photoheterotroph

ee also

*Primary nutritional groups

References

Sources

[http://www.bact.wisc.edu/Microtextbook/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=58 University of Wisconsin, Madison Microbiology Online Textbook]

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  • photoheterotroph — noun A heterotrophic organism that uses light for energy but cannot use carbon dioxide as its sole carbon source and thus uses organic compounds from the environment …   Wiktionary

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  • photoheterotroph — See: heterotroph …   Glossary of Biotechnology

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  • Chemotroph — A black smoker in the Atlantic Ocean providing energy and nutrients Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic (chemoorganotrophs) or inorganic… …   Wikipedia

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