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Nonsymbiotic haemoglobins in plants

100%

Sowa A. W. , Guy P. A. , Sowa S. , Hill R. D.

tom 46

nr 2

General aspects regarding the presence of nonsymbiotic haemoglobin in plants are presented with the emphasis on those related to its function. As it becomes apparent that the nonsymbiotic haemoglobins are widespread across the plant kingdom and that they represent a more primitive and evolutionary older form of the plant globin genes, the question of their function becomes more attractive. While the physiological functions of the symbiotic haemoglobins in plants are well understood, almost nothing is known about their nonsymbiotic predecessors. Therefore, the known and hypothetical functions of haemoglobins in various systems are described along with information concerning properties and the regulation of expression of the nonsymbiotic haemoglobins. Interestingly, a number of nonsymbiotic haemoglobins have been shown to be hypoxia-inducible. The spatial and temporal pattern of this induction in barley may suggest that it is an integral part of the plants response to limiting oxygen stress.

Heat shock protein 70 as a marker of oxygen stress in kidneys of rat offspring. Immunohistochemical assessment

100%

Pedrycz A. , Boratynski Z. , Visconti J.

nr 2