scholarly journals Effect of Alkylphenols on Motility of Unicellular Green Algae Chlamydomonas reinhardtii and Crustacea Daphnia magna

2005 ◽  
Vol 28 (5) ◽  
pp. 333-338 ◽  
Author(s):  
Hitoshi TANAKA ◽  
Osamu NISHIMURA ◽  
Shogo NAKAMURA ◽  
Ryuichi SUDO
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Daphnia Magna ◽  
Green Algae

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.

Cellular Photosynthetic Rate of Fully and Partially Pigmented Chlamydomonas reinhardtii as a Function of Irradiance

2011 ◽  
Author(s):  
Thomas E. Murphy ◽  
Halil Berberog˘lu
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Photosynthetic Rate ◽  
Wild Strain ◽  
Experimental Setup ◽  
Light Penetration ◽  
Photosynthetic Rates ◽  
Planktonic Algae ◽  
Mass Cultures ◽  
Increase Productivity

This paper reports the cellular photosynthetic rates of the green algae Chlamydomonas reinhardtii wild strain and its truncated chlorophyll antenna transformant, tla1, as a function of local irradiance. It is hypothesized that reduction in the pigmentation of algae cells can enhance light peneration in mass cultures and increase productivity. Thus, an experimental setup was designed to expose each cell within planktonic algae cultures to a nearly uniform irradiance. An oxygen microsensor was used to monitor the photosynthetic rate as the irradiance onto the sample was varied. The results showed that the cellular photosynthetic rate of the wild strain, CC125, was greater than that of tla1 at all irradiances, by a factor that ranged from 1.7 to 4. Photoinhibition was observed in both strains, although the effect was more pronounced in CC125. Although less pigmented cells enable deeper light penetration in photobioreactors, their reduced phosotynthetic rate can negate this benefit.

scholarly journals Toxicity of Alkylphenols to Unicellular Green Algae Chlamydomonas reinhardtii.

2002 ◽  
Vol 25 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Hitoshi TANAKA ◽  
Ju-Hyun KIM ◽  
Shogo NAKAMURA ◽  
Ryuichi SUDO
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae

LC Determination of 4-Bromoaniline in Green Algae Chlamydomonas reinhardtii After Continuous-Flow Microextraction

2007 ◽  
Vol 65 (7-8) ◽  
pp. 447-451 ◽  
Author(s):  
Xiujuan Liu ◽  
Xuedong Wang ◽  
Xiaowen Chen ◽  
Shao Yang
Keyword(s):  
Chlamydomonas Reinhardtii ◽  
Green Algae ◽  
Continuous Flow

Refactoring the Six-Gene Photosystem II Core in the Chloroplast of the Green Algae Chlamydomonas reinhardtii

2015 ◽  
Vol 5 (7) ◽  
pp. 589-596 ◽  
Author(s):  
Javier A. Gimpel ◽  
Hussam H. Nour-Eldin ◽  
Melissa A. Scranton ◽  
Daphne Li ◽  
Stephen P. Mayfield
Keyword(s):  
Photosystem Ii ◽  
Chlamydomonas Reinhardtii ◽  
Green Algae
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