Blue Light Enhanced Respiration in a Colorless<i>Chlorella</i>Mutant

Schmid, Georg; Schwarze, P.

doi:10.1515/bchm2.1969.350.2.1513

Cited by 48 publications

(8 citation statements)

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“…The stimulation of respiration by light has been previously observed in other systems, e.g. in chlorophyll-less and colourless mutants of ChZoreZZa (Kowallik & Gaffron, 1967;Schmid & Schwarze, 1969). In the latter cases, however, it was the metabolism-coupled respiration that was stimulated by light, since the increased O2 consumption was paralleled by an increased C 0 2 production.…”

Section: Resultsmentioning

confidence: 57%

“…Other differences from our system were that in Chlorella, there was a 10-20 min lag period between illumination and the onset of increased respiration and that the stimulated respiration persisted for a relatively long time under the continuous light. The authors explained this effect as being due to increased amino acid oxidation by an FMN-dependent oxidase (Schmid & Schwarze, 1969).…”

Section: Resultsmentioning

confidence: 99%

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Photostimulated oxygen uptake in Trichoderma viride

Sulová

Hrmová

Farkaš

1990

Journal of General Microbiology

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Exposure of dark-grown mycelia of Trichodevma tliride to white light elicited a transient burst of respiratory activity manifested as increased O2 consumption which was not paralleled by a corresponding increase in C 0 2 production. The period of increased uptake of O2 lasted for 5-10min and was independent of the duration of illumination. The inhibitors of respiration tested, antimycin A and mucidin, and the antioxidant, dithiothreitol, effectively suppressed the photostimulated uptake of 02, whereas rotenone, amytal and salicylhydroxamic acid were without effect. It is concluded that the illumination of mycelia caused irreversible photo-oxidation of an as yet unidentified compound, and that the electrons released by the photochemical event were accepted by a NADindependent flavin dehydrogenase and further transferred to atmospheric O2 via the cytochrome electrontransport chain coupled with the formation of ATP.

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Section: Resultsmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 99%

Photostimulated oxygen uptake in Trichoderma viride

Sulová

Hrmová

Farkaš

1990

Journal of General Microbiology

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“…In earlier reports of glycolate oxidation by algal extracts, the enzyme was not characterized (39,98,193). An exception may be a yellow ChIarella mutant whose glycolate oxidase links directly to O2 (148) .…”

Section: Enzymes Of Microbodiesmentioning

confidence: 99%

Microbodies-Peroxisomes and Glyoxysomes

Tolbert¹

1971

Annu. Rev. Plant. Physiol.

568

256

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Microbodies were first reported at the ultrastructural level in the proximal convoluted tubule of mouse kidney by Rhodin in 1954 (1) and in hepatic parenchymal cells by Rouiller and Bernhard in 1956 (2) at about the time The Journal of Cell Biology was established . They were reported in plants by Porter and Caulfield in 1958 (3) and by Mollenhauer et al. in 1966 (4) . Microbodies are now recognized as ubiquitous subcellular respiratory organelles in eukaryotic cells . Microbodies from all tissues appear morphologically similar and have similar enzymatic properties, but the metabolic pathways within this subcellular compartment vary, depending upon the tissue . Microbodies (peroxisomes and glyoxysomes) were one of the last major subcellular compartments to be recognized, and it was not until the end of the 1960s that their significance was established by several reviews . Most important were the following two summaries: "Peroxisomes (Microbodies and Related Particles)" by de Duve and Baudhuin in 1966 (5), and "The Peroxisome: a New Cytoplasmic Organelle" by de Duve in 1969 (6) . The Nobel Prize that de Duve received was based on his pioneering work in the discovery and isolation of subcellular organelles, such as microbodies. Material in these two papers is essential reading for new students in the field . Also in 1969, the morphological literature was assembled into a book, Microbodies and Related Particles by Hruban and Rechcigl (7), which summarized the evidence for the widespread distribution of the particle . Another landmark in 1966, also from de Duve's group (8), was the development of procedures for isolating microbodies . The first research symposium, "The Nature and Function of Peroxisomes (Microbodies, Glyoxysomes)," was held in 1969 (9) .Recently there has been such a proliferation of papers about the many aspects of microbodies that in this article we cite only reviews or use only an initial reference to a specific subject. Some of the general reviews are on development and enzymatic content (10), microbodies in leaves (11-13), germinating seeds (14, 15), algae (16), fungi (17), and protozoa (18); other reviews will be cited with specific topics . Nevertheless, we have little knowledge today of the physiological role of microbodies in cellular metabolism . Properties and characteristics of microbodies are still incompletely described, and much of the recent literature has not been confirmed or well established by the few biologists working in this field .

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“…In unicellular green algae, blue light controls basic metabolic reactions (Kowallik 1982, Kamiya 2001). The first finding reported was an enhanced consumption of oxygen of chlorophyll-free Chlorella mutants (Kowallik and Gaffron 1966, Schmid and Schwarze 1969, Kamiya and Miyachi 1974. It was followed by the discovery of an increased breakdown of endogenous carbohydrate reserves Schätzle 1980, Kamiya 1985), of Abbreviations -GS, glutamine synthetase; MSX, methionine sulphoximine; NR, nitrate reductase; PCV, packed cell volume; PEPC, phosphoenolpyruvate carboxylase; PK, pyruvate kinase.…”

Section: Introductionmentioning

confidence: 99%

Blue‐light‐control of the uptake of amino acids and of ammonia in Chlorella mutants

Kamiya

Saitoh

2002

Physiologia Plantarum

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In non-photosynthetic, yellow or colourless mutant cells of Chlorella kessleri, grown with nitrate as sole nitrogen source, blue light inhibited the uptake of the amino acids glycine, proline and arginine and of ammonia in growing cells, while it enhanced the uptake of these amino acids in resting cells. On the other hand, in cells grown with ammonia as the only nitrogen source without nitrate reductase activity, blue light did not influence the uptake of amino acids and of ammonia in growing cells, while it enhanced the uptake of amino acids in resting cells. Addition of methionine sulphoximine, a potent inhibitor of glutamine synthetase, to growing cells, resulted in intracellular ammonia-accumulation and inhibition of uptake of glycine and of ammonia. For the colourless mutant, blue light was shown to activate purified nitrate reductase. These results indicate that in the mutant cells of Chlorella examined, uptake of ammonia seems to be influenced by nitrate reductase and the uptake of amino acids was influenced by both nitrate reductase and an unknown blue-light-receptor(s). The uptake of urea in mutant cells is not influenced by the irradiation with blue light. Uptake of glycine was also increased after addition of glucose (hexose) in the dark. Because blue light is known to enhance the breakdown of starch, a reaction producing glucose for oxidative degradation in the algae used, the role of glucose (hexose) in the blue light-affected uptake of amino acids is discussed.

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Blue Light Enhanced Respiration in a ColorlessChlorellaMutant

Cited by 48 publications

References 0 publications

Photostimulated oxygen uptake in Trichoderma viride

Photostimulated oxygen uptake in Trichoderma viride

Microbodies-Peroxisomes and Glyoxysomes

Blue‐light‐control of the uptake of amino acids and of ammonia in Chlorella mutants

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