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Published on: November 16, 2014
Glutamine synthetase isoforms in the green hydra symbiosis
T A V Rees1, N Shah2, G R Stewart2
1Department of Plant Sciences, University of Oxford, Parks Road, Oxford OX1 3PF, UK.
Abstract:
The occurrence of glutamine synthetase isoforms in the green hydra symbiosis has been investigated using ion-exchange chromatography. There were three isoforms which were designated algal cytosolic, chloroplastic and host isoenzymes. Comparison of the proportions of algal isoforms from the intact association with those from nitrogen-replete and nitrogen-starved cultures of a Chlorella strain originally isolated from green hydra, suggests that symbionts in the intact association may be nitrogen-deficient.
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