. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. STRUCTURE OF PHOTOSYNTHETIC SULFUR BACTERIA 79. Fig. 5. Electron micrograph of thin section of Chromntiiou strain D grown at low light intensity (see text). small chromatophores as appear in Chromatium have limited us in further speculation concerning a structural association. Variations in the far-red region of the absorption spectrum of bacteriochlorophyll have also been a subject of considerable specula- tion. The wide diversity of the in vivo spectrum of this pigment in a variety of photosynthetic bacteria is shown in Fig,
. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. STRUCTURE OF PHOTOSYNTHETIC SULFUR BACTERIA 79. Fig. 5. Electron micrograph of thin section of Chromntiiou strain D grown at low light intensity (see text). small chromatophores as appear in Chromatium have limited us in further speculation concerning a structural association. Variations in the far-red region of the absorption spectrum of bacteriochlorophyll have also been a subject of considerable specula- tion. The wide diversity of the in vivo spectrum of this pigment in a variety of photosynthetic bacteria is shown in Fig, 6. The divergence in spectra of Chromatium is caused by different nutritional conditions of growth (see below). Wassink et al. (17) have reported variations in the far-red chlorophyll spectrum of Chromatium, anditwas suggested that the multiplicity of absorption maxima represented varieties of bacteriochlorophyll-protein complexes produced under different condi- tions of growth. Cohen-Bazire, et al. (18) and Bergeron and Fuller (19) demonstrated changes in the in vivo spectrum of bacteriochloro- phyll that were associated with carotenoid deficiency. Wassink and Kronenberg (20), however, were able to grow carotenoid deficient cells of Chromatium with a relatively normal spectrum. Bril (21) has re- cently confirmed Wassink's observations and points out that these divergent experimental results are not readily explained. One point is clear, viz., that alteration of the fine structure in the far-red spec- trum is not due directly to carotenoid deficiency. Frenkel and Hick-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Symposium on Bacterial Photosynthesis (1963 : Yellow Springs, Ohio); Charles F. Kettering Research Laboratory (Yellow Springs, Ohio); Gest, Howard. Yellow Springs, Ohio, Antioch Press
Size: 1927px × 1296px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
