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Abstract Detail


Teaching Section

Cook, Craig [1], Told, Josh [1], Kopp, Olga [2].

Analysis of the effect of different wavelengths of light in the growth of Fremyella diplosiphon.

Fremyelladiplosiphon is a photosynthetic cyanobacterium that uses chromatic adaptation (light-color acclimation) when exposed to different types of light.Chromatic adaptation allows cyanobacteria to tailor their light-harvesting antennae complexes to the environmental spectrum of light. The cyanobacteria contain phycobilisomes (PBS) that include phycobiliproteins with bilin chromophores and anchor proteins. These phycobiliproteins can change size, shape,protein and bilin composition to allow optimization of photosynthetic processes when the cyanobacteria are exposed to different light spectra. Chromatic adaptation of Fremyella results in the production of phycocyanin (absorption of 600-660 nm) when grown under red light and phycoerythrins (absorption between 520 and 580 nm) when grown under blue light. This research aimed to analyze the effect of different wavelengths of light in Fremyella growth. The absorption spectrum under different light conditions is reported. This type of analysis can be very useful in the undergraduate plant physiology laboratory when analyzing pigments and can be tailored for inquiry-based exercises in the classroom

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1 - Utah Valley University, Biology, 800 West University Parkway MS 179, Orem, UT, 84058-5999, USA
2 - Utah Valley University, Biology, 800 West University Parkway, MS 179, Orem, UT, 84058-5999, USA

Keywords:
Fremyella diplosiphon
Cyanobacteria
Chromatic adaptation
Pigment analysis.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Battelle South/Convention Center
Date: Monday, July 9th, 2012
Time: 5:30 PM
Number: P005
Abstract ID:647


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