Kumar, Neeraj and Kumar, Sanjay and Ahuja, Paramvir Singh (2004) Differences in the activation state of ribulose-1,5-bispliosphate carboxylase/oxygenase in barley, pea, and wheat at two altitudes. Photosynthetica, 42 (2). pp. 303-305. ISSN 0300-3604

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Activation state of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) is an important parameter determining the rate of net photosynthesis (P-N) in situ for which no information is available with reference to altitude. We analyzed activation state along with P-N in three plant species and their cultivars grown at low (LA, 1300 in) and high (HA, 4 200 m) altitudes. No significant change in P-N and the initial activity of RuBPCO was obtained with reference to altitude. However, activation state of RuBPCO was reduced significantly in the HA plants as compared to the LA ones. Hence low partial pressure of CO2 prevailing at HA might be responsible for the lower activation state of RuBPCO.

Item Type: Article
Uncontrolled Keywords: Atmospheric Co2; cultivar differences; Hordeum; net photosynthetic rate; Pisum; Triticum; Photosynthesis; Plants.
Subjects: Plant sciences
Depositing User: Dr. Aparna Maitra Pati
Date Deposited: 30 Dec 2011 07:21
Last Modified: 06 Feb 2012 06:22
URI: http://ihbt.csircentral.net/id/eprint/391

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