Differences in cold lability of pyruvate, Pi dikinase among C4 species

Sugiyama, T and Schmitt, M R and Ku, S B and Edwards, G E (1979) Differences in cold lability of pyruvate, Pi dikinase among C4 species. Plant and Cell Physiology, 20 (5). pp. 965-971.

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The cold lability of pyruvate, Pi dikinase in crude leaf extracts was studied in a number of C4 plants. The survey included C4 monocots and dicots and species representingthe three C4 subgroups: NADP-malic enzyme, NAD-malic enzyme, and PEP-carboxykinase types. In some species (e.g., Digitaria sanguinalis, Sorghum bicolor and Echinochloa crus-galli), the enzyme was very sensitive to cold treatment (half life of about 8 min at 0°C and 10 to 15 min at 10°C). In other species (Panicum miliaceum, Panicum maximum and Panicum texanum), the enzyme was very cold tolerant (retention of 60 to 85% activity after 60 min at 0°C and 90% activity after 60 min at 10°C). Among the plants examined, the most cold sensitive pyruvate,Pi dikinase was found among species of the NADP-malic enzyme subgroup.

Item Type: Article
Author Affiliation: Shizuoka University, Ohya, Japan and University of Wisconsin, USA
Subjects: Plant Physiology and Biochemistry > Plant Physiology
Divisions: Other Crops
Depositing User: Library ICRISAT-InfoSAT
Date Deposited: 23 Feb 2012 11:53
Last Modified: 23 Feb 2012 11:53
Official URL: http://pcp.oxfordjournals.org/content/20/5/965.abs...
URI: http://eprints.icrisat.ac.in/id/eprint/3199

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