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In vitro enzyme activities and products of 14CO2 assimilation in flag leaf and ear parts of wheat (Triticum aestivum L.) by H. B. Singal; I. S. Sheoran; Randhir Singh is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is In vitro enzyme activities and products of 14CO2 assimilation in flag leaf and ear parts of wheat (Triticum aestivum L.) about?

Activities of key enzymes of Calvin cycle and C4 metabolism, rate of (14)CO2 fixation in light and dark and the initial products of photosynthetic (14)CO2 fixation were determined in flag leaf and different ear parts of wheat viz. pericarp, awn and glumes. Compared to the activities of RuBP carboxylase and other Calvin cycle enzymes viz. NADP-glyceraldehyde-3-phosphate dehydrogenase, NAD-glyceraldehyde-3-phosphate dehydrogenase and ribulose-5-phosphate kinase, the levels of PEP carboxylase and other enzymes of C4 metabolism viz. NADP-malate dehydrogenase, NAD-malate dehydrogenase, NADP-malic enzyme, NAD-malic enzyme, glutamate oxaloacetate transaminase genase, NADP-malic enzyme, NAD-malic enzyme, glutamate oxaloacetate transaminase and glutamate pyruvate transaminase, were generally greater in ear parts than in the flag leaf. In contrast to CO2 fixation in light, the various ear parts incorporated CO2 in darkness at much higher rates than flag leaf. In short term assimilation of (14)CO2 by illuminated ear parts, most of the (14)C was in malate with less in 3-phosphoglyceric acid, whereas flag leaves incorporated most into 3-phosphoglyceric acid. It seems likely that ear parts have

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Author

H. B. Singal; I. S. Sheoran; Randhir Singh

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0166-8595)

Published

1986

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)