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Communication
Analyst, 2009, 134, 2216 - 2219, DOI: 10.1039/b915810c
Measurement of metabolite formation in single living cells of Chlamydomonas reinhardtii using synchrotron Fourier-Transform Infrared spectromicroscopy
Kira L. Goff, Luca Quaroni and Kenneth E. Wilson
We demonstrate the capability of synchrotron-based Fourier-Transform Infrared spectromicroscopy to detect metabolite formation in single, living cells of the unicellular algae Chlamydomonas reinhardtii. We show that the high brightness of the source provides a sufficient signal-to-noise ratio to detect small molecular species accumulating in a spot about 15 µm in size. Time resolved measurements are carried out on cells grown heterotrophically under low-light conditions to study the evolution of products of anaerobic metabolism. The formation of small molecular species, including ethanol and at least one carbonyl containing compound, can be detected with a time resolution of the order of one minute.
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