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J Plant Physiol. 1984 Nov;116(5):473-6. doi: 10.1016/S0176-1617(84)80139-X. Epub 2012 Jan 20.

Protection by CO(2) against Sodium Deficiency in a Mutant of Nostoc muscorum.

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1
Departamento de Biología General, Facultad de Ciencias Universidad Autonoma de Madrid. Canto Blanco, Madrid 34.

Abstract

The effects of Na-deficient culture were studied on a mutant of Nostoc muscorum unable to fix N(2). Na deficiency made the cells sensitive to photooxidation, thus at a light intensity of lO W m(-2) and a low concentration of CO(2) (0.03 %), Na deficiency caused chlorosis and cell lysis. At a lower light intensity, cell damages did not take place. Higher levels of CO(2) prevented photooxidation, so that only a partial inhibition of photosynthetic oxygen evolution was found under these conditions.

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