C4 photosynthetic carbon metabolism in the leaves of aromatic tropical grasses ? I. Leaf anatomy, CO2 compensation point and CO2 assimilation

1981 ◽  
Vol 2 (4) ◽  
pp. 225-233 ◽  
Author(s):  
G. Rajendrudu ◽  
V. S. R. Das
Keyword(s):  
Leaf Anatomy ◽  
Carbon Metabolism ◽  
Co2 Assimilation ◽  
Compensation Point ◽  
Tropical Grasses ◽  
Co2 Compensation Point ◽  
Photosynthetic Carbon ◽  
Photosynthetic Carbon Metabolism

The distribution and ultrastructure of chloroplasts in leaves differing in photosynthetic carbon metabolism. II. Atriplex rosea and Atriplex hastata (Chenopodiaceae)

1969 ◽  
Vol 47 (6) ◽  
pp. 915-919 ◽  
Author(s):  
W. J. S. Downton ◽  
T. Bisalputra ◽  
E. B. Tregunna
Keyword(s):  
Leaf Anatomy ◽  
Carbon Metabolism ◽  
Chloroplast Development ◽  
Bundle Sheath ◽  
Mesophyll Cells ◽  
Bundle Sheath Cells ◽  
Photosynthetic Carbon ◽  
Changing Roles ◽  
Photosynthetic Carbon Metabolism ◽  
Maximum Development

Some aspects of chloroplast development for parenchymatic bundle sheath cells and mesophyll cells of Atriplex rosea leaves are described. The mesophyll chloroplasts begin to degenerate when the bundle sheath chloroplasts have reached a stage of maximum development. These events are related to the changing roles of the two types of chloroplasts in carbon dioxide assimilation. Leaves of Atriplex rosea are similar to those of tropical grasses in leaf anatomy, photosynthetic carbon metabolism, and CO2 compensation value. Atriplex hastata differs from A. rosea in leaf anatomy and is photosynthetically similar to the temperate grasses. There is a lack of parenchymatic sheath development and the chloroplasts which surround the vascular bundle are ultrastructurally identical with those in the rest of the mesophyll.

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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