scholarly journals Induction of Inorganic Carbon Accumulation in the Unicellular Green Algae Scenedesmus obliquus and Chlamydomonas reinhardtii

1988 ◽  
Vol 87 (2) ◽  
pp. 437-442 ◽  
Author(s):  
Kristin Palmqvist ◽  
Staffan Sjöberg ◽  
Göran Samuelsson
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Inorganic Carbon ◽  
Scenedesmus Obliquus ◽  
Carbon Accumulation

Inactivation and Reactivation of the Hydrogenases of the Green Algae Scenedesmus obliquus and Chlamydomonas reinhardtii

1993 ◽  
Vol 48 (1-2) ◽  
pp. 41-45 ◽  
Author(s):  
Thomas Urbig ◽  
Rüdiger Schulz ◽  
Horst Senger
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Scenedesmus Obliquus ◽  
Sodium Dithionite ◽  
Anaerobic Conditions ◽  
Whole Cells ◽  
Complete Inactivation

The hydrogenases of the green algae Scenedesmus obliquus and Chlamydomonas reinhardtii were activated under anaerobic conditions. Exposure of whole cells and cell-free homogenates to air lead to a complete inactivation of the hydrogenases. The inactivation in whole cells of Scenedesmus is faster than the inactivation of the cell-free homogenate. Inactivation of the hydrogenases could be reversed by anaerobic readaptation in whole cells. The inactivation of the hydrogenase in homogenates seems to be irreversible. Neither the removal of oxygen nor the addition of ATP, NAD(P)H, sodium dithionite, dithiothreitol, ferredoxin and thioredoxin to homogenates facilitated the reactivation of the hydrogenase. The occurrence of a hydrogenase regulating factor is discussed.

scholarly journals Inorganic Carbon Accumulation by Chlamydomonas reinhardtii

1988 ◽  
Vol 88 (2) ◽  
pp. 491-496 ◽  
Author(s):  
Livingston J. Manuel ◽  
James V. Moroney
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Inorganic Carbon ◽  
Carbon Accumulation

scholarly journals Acclimation of Photosynthetic Light Reactions during Induction of Inorganic Carbon Accumulation in the Green Alga Chlamydomonas reinhardtii

1990 ◽  
Vol 94 (1) ◽  
pp. 357-366 ◽  
Author(s):  
Kristin Palmqvist ◽  
Lars-Göran Sundblad ◽  
Gunnar Wingsle ◽  
Göran Samuelsson
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Alga ◽  
Inorganic Carbon ◽  
Carbon Accumulation

A possible role for carbonic anhydrase in the lumen of chloroplast thylakoids in green algae

2002 ◽  
Vol 29 (3) ◽  
pp. 243 ◽  
Author(s):  
Eddy van Hunnik ◽  
Dieter Sültemeyer
Keyword(s):  
Cell Wall ◽  
Carbonic Anhydrase ◽  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Inorganic Carbon ◽  
Electron Flow ◽  
Photosynthetic Apparatus ◽  
Thylakoid Membranes ◽  
Atp Production ◽  
Atp Formation

In order to understand the function of the lumen carbonic anhydrase (CA) which is bound to PSII at the lumenal side of the thylakoids in chloroplasts of eukaryotic algae, thylakoids were isolated from chloroplasts of Tetraedron minimum, Chlamydomonas noctigama, the cell wall-less mutant Chlamydomonas reinhardtii CW15, and a C. reinhardtii CW15/CIA3 mutant which lacks the lumen CA. The isolated thylakoids produced O2 on illumination and exhibited electron flow between PSII and PSI, indicating that the thylakoids were intact and the photosynthetic apparatus were functional. We could not detect any uptake of HCO3–,nor efflux of CO2, from the thylakoids upon illumination, making it improbable that the CA present in the lumen of the thylakoids would play a role in furnishing CO2 for Rubisco. We were able to determine ATP production upon illumination in isolated thylakoids. Under high inorganic carbon (Ci; 5 mM), all species showed significant amounts of ATP being produced. Under low Ci (200 M), we could not detect ATP formation from C. reinhardtii CW15/CIA3 upon illumination. This mutant was not able to survive more then 4 h of low Ci in culture. We therefore suggest that the lumen CA is not involved in the CO2 concentrating mechanism, but might play a role in the formation of a proton gradient across the thylakoid membranes.

Relief and calcium from gypsum as key factors for net inorganic carbon accumulation in soils of a semiarid Mediterranean environment

Geoderma ◽  
2021 ◽  
Vol 398 ◽  
pp. 115115
Author(s):  
Vito Armando Laudicina ◽  
Carmelo Dazzi ◽  
Antonio Delgado ◽  
Haydn Barros ◽  
Riccardo Scalenghe
Keyword(s):  
Inorganic Carbon ◽  
Carbon Accumulation ◽  
Mediterranean Environment ◽  
Key Factors

Influence of mixing and shear stress on Chlorella vulgaris, Scenedesmus obliquus, and Chlamydomonas reinhardtii

2012 ◽  
Vol 25 (2) ◽  
pp. 485-495 ◽  
Author(s):  
Marco Leupold ◽  
Stefan Hindersin ◽  
Giselher Gust ◽  
Martin Kerner ◽  
Dieter Hanelt
Keyword(s):  
Shear Stress ◽  
Chlamydomonas Reinhardtii ◽  
Chlorella Vulgaris ◽  
Scenedesmus Obliquus
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