Gloeobacter Violaceus — Further Investigation of an Unusual Photosynthetic Apparatus Pigment Changes in Response to Changes in Light Quality

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Gloeobacter violaceus is an in numerous aspects unusual cyanobacterium, carrying the photosynthetic apparatus in the cytoplasmic membrane [1], [2]. The typical long wavelength fluorescence emission of PS I at 77K is missing [3]. The membrane is underlayed by phycobilisomes carrying phycourobilin in addition to phycoerythrobilin [4]. An early publication suggests that there is no pronounced difference in the response of the organism to different light qualities during growth [1].