Effect of water stress on some enzymes of nitrogen metabolism in pigeonpea

Sheoran, I. S. ; Luthra, Y. P. ; Kuhad, M. S. ; Singh, Randhir (1981) Effect of water stress on some enzymes of nitrogen metabolism in pigeonpea Phytochemistry, 20 (12). pp. 2675-2677. ISSN 0031-9422

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0031-9422(81)85265-X


Water stress created by withholding irrigation at flowering stage (70 days) in pigeonpea resulted in decreased water potential of roots, nodules and leaves. The decreased water potential in nodules resulted in decreased activities of nitrogenase, glutamine synthetase, glutamate dehydrogenase and uricase. However, the activity of allantoinase increased under mild stress with a slight decrease under severe stress. This corresponded with a simultaneous increase in allantoic acid content. Uricase and allantoinase could not be detected in roots and leaves of both control and stressed plants. In roots, the activities of GS and GDH decreased under stress, whereas in leaves, their activities were not affected. Although the water potential recovered in different organs of the stressed plant on re-irrigation, the recovery in the case of some enzymes was not complete.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Cajanus cajan; Leguminosae; Pigeonpea; Water Stress; Nitrogenase; Glutamine Synthetase; Glutamate Dehydrogenase; Uricase; Allantoinase; Allantoic Acid
ID Code:50059
Deposited On:21 Jul 2011 14:36
Last Modified:21 Jul 2011 14:36

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