scholarly journals Photosynthetic carbon metabolism in Euglena gracilis. Part XXIII. Effects of photosynthetic intermediates on the activation state of ribulose 1,5-bisphosphate carboxylase/oxygenase from Euglena gracilis Z.

1989 ◽  
Vol 53 (8) ◽  
pp. 2045-2052 ◽  
Author(s):  
Akiho YOKOTA ◽  
Atsushi HARADA ◽  
Hirokazu KOBAYASHI ◽  
Shozaburo KITAOKA
Keyword(s):  
Euglena Gracilis ◽  
Carbon Metabolism ◽  
Bisphosphate Carboxylase ◽  
Photosynthetic Carbon ◽  
Photosynthetic Carbon Metabolism ◽  
Euglena Gracilis Z

Effects of Cytosolic FBPase on Photosynthetic Carbon Metabolism Under High CO2 Conditions

2008 ◽  
pp. 895-899 ◽  
Author(s):  
Masahiro Tamoi ◽  
Yoshie Hiramatsu ◽  
Shigeki Nedachi ◽  
Tomoki Tabuchi ◽  
Kumi Otori ◽  
...  
Keyword(s):  
Carbon Metabolism ◽  
High Co2 ◽  
Photosynthetic Carbon ◽  
Photosynthetic Carbon Metabolism ◽  
Cytosolic Fbpase

scholarly journals Abscisic acid as a factor in regulation of photosynthetic carbon metabolism of pea seedlings

2014 ◽  
Vol 51 (2) ◽  
pp. 229-240 ◽  
Author(s):  
Maria Faltynowicz ◽  
Waldemar Lechowicz ◽  
Jerzy Poskuta
Keyword(s):  
Abscisic Acid ◽  
Carbon Metabolism ◽  
Rubp Carboxylase ◽  
Pep Carboxylase ◽  
Pea Seedlings ◽  
Photosynthetic Carbon ◽  
Photosynthetic Carbon Metabolism ◽  
Sugar Phosphates ◽  
Reduced Activity ◽  
Endogenous Aba

The influence of abscisic acid (ABA) on carbon metabolism and the activity of ribulosebisphosphate (RuBP) and phosphoenolpyruvate (PEP) carboxylases in 8-day-old pea seedlings was investigated. It was endeavoured to correlate the changes observed in metabolic processes with the endogenous ABA level. In plants treated with ABA incorporation of labeled carbon into sucrose, glucose, fructose and sugar phosphates was depressed, while <sup>14</sup>C incorporation into starch, ribulose and malic acid was enhanced. The activity of RuBP carboxylase was considerably lowered, whereas that of PEP carboxylase was slightly increased. It is considered that inhibition of photosynthesis due to the action of ABA is caused to a great extent by the obstruction of the C-3 pathway and reduced activity of RuBP carboxylase, whereas (β-carboxylation was not blocked.

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