Light/dark modulation of phosphoenolpyruvate carboxylase in C3 and C4 species

1994 ◽  
Vol 42 (2) ◽  
pp. 133-143 ◽  
Author(s):  
Sanjay K. Gupta ◽  
Maurice S. B. Ku ◽  
Jenq-Horng Lin ◽  
Dianzhong Zhang ◽  
Gerald E. Edwards
Keyword(s):  
Phosphoenolpyruvate Carboxylase ◽  
C3 And C4 Species ◽  
C4 Species

Regulation of photorespiration in C3 and C4 species

1975 ◽  
Vol 41 (2) ◽  
pp. 137-179 ◽  
Author(s):  
Raymond Chollet ◽  
William L. Ogren
Keyword(s):  
C3 And C4 Species ◽  
C4 Species

scholarly journals Species Having C4 Single-Cell-Type Photosynthesis in the Chenopodiaceae Family Evolved a Photosynthetic Phosphoenolpyruvate Carboxylase Like That of Kranz-Type C4 Species

2006 ◽  
Vol 142 (2) ◽  
pp. 673-684 ◽  
Author(s):  
María Valeria Lara ◽  
Simon D.X. Chuong ◽  
Hossein Akhani ◽  
Carlos Santiago Andreo ◽  
Gerald E. Edwards
Keyword(s):  
Single Cell ◽  
Phosphoenolpyruvate Carboxylase ◽  
Cell Type ◽  
C4 Species ◽  
Single Cell Type

Photosynthetic responses of C3 and C4 species from cool shaded habitats in Hawaii

Oecologia ◽  
1980 ◽  
Vol 47 (1) ◽  
pp. 106-109 ◽  
Author(s):  
Robert H. Robichaux ◽  
Robert W. Pearcy
Keyword(s):  
C3 And C4 Species ◽  
C4 Species ◽  
Photosynthetic Responses

Distribution of South African C3 and C4 species of Cyperaceae in relation to climate and phylogeny

2004 ◽  
Vol 29 (3) ◽  
pp. 313-319 ◽  
Author(s):  
W. D. STOCK ◽  
D. K. CHUBA ◽  
G. A. VERBOOM
Keyword(s):  
South African ◽  
C3 And C4 Species ◽  
C4 Species

Activation and Inactivation of Phosphoenolpyruvate Carboxylase in Leaf Extracts From C4 Species

1978 ◽  
Vol 5 (5) ◽  
pp. 571 ◽  
Author(s):  
MD Hatch ◽  
IR Oliver
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Phosphoenolpyruvate Carboxylase ◽  
Bovine Serum ◽  
Leaf Extracts ◽  
Small Molecular Weight ◽  
Carboxylase Activity ◽  
C4 Species ◽  
The Stability

The stability of phosphoenolpyruvate carboxylase (EC 4.1.1.31) was examined following extraction of the enzyme from leaves of several C4 plants. Extracts were rapidly processed on small Sephadex G-25 columns to free protein of small-molecular-weight compounds. With most of the species examined, activity was rapidly lost at both 0 and 25°C when the pH was about 7.8 or higher. Addition of bovine serum albumin to extracts incubated at 25°C and pH 8.2 not only prevented inactivation with several species, but resulted in a substantial increase in activity. The addition of dithiothreitol plus Mg2+ to extracts from some of these species reduced or prevented inactivation. With extracts maintained at 0°C, addition of either bovine serum albumin or dithiothreitol was effective only in reducing the rate of inactivation in extracts. Phosphoenolpyruvate carboxylase activity remained stable, or increased substantially, when extracts buffered between pH 7.4 and 6.9 were incubated at either 0 or 25°C. Activation was usually complete within an hour and was often significantly greater at 25°C or when bovine serum albumin was added. The activity of partially purified phosphoenolpyruvate carboxylase from Zea mays was similarly affected by pH, temperature, and bovine serum albumin. The present studies raise doubts about the accuracy of phosphoenolpyruvate carboxylase determinations made during the course of some previous studies on C4 species. Reliable procedures for the determination of phosphoenolpyruvate carboxylase activity in C4 plant extracts are described. Possible physiological implications of the results are considered.

Carbon balance, productivity, and water use of cold-winter desert shrub communities dominated by C3 and C4 species

Oecologia ◽  
1977 ◽  
Vol 29 (4) ◽  
pp. 275-300 ◽  
Author(s):  
Martyn M. Caldwell ◽  
Richard S. White ◽  
Russell T. Moore ◽  
L. B. Camp
Keyword(s):  
Water Use ◽  
Carbon Balance ◽  
Cold Winter ◽  
Desert Shrub ◽  
C3 And C4 Species ◽  
C4 Species
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