The enzymes in C4 photosynthesis
Ashton, A.R, Burnell, J.N., Furbank, R.T., Jenkins, C.L.D., and Hatch, M.D. (1990) The enzymes in C4 photosynthesis. In: Lea, P.J., and Harborne, J.B., (eds.) Enzymes of Primary Metabolism. Methods in Plant Biochemistry, 3 . Academic Press, London, UK, pp. 39-72.
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[Extract] The history of the resolution of C4 photosynthesis follows a pattern of demonstrating the operation of unique photosynthetic biochemistry by various means and then identifying the enzymes necessary to support that biochemistry. Critical to the developing understanding of this process was the recognition of two types of photosynthetic cells in C4 plants (mesophyll and bundle sheath) with quite different enzyme complements and distinct biochemical roles (see Fig. 3.1). As currently interpreted (see Edwards and Walker, 1983; Hatch, 1987) the reactions unique to the C4 pathway serve, in association with some remarkable modifications of leaf anatomy and ultrastructure, to concentrate CO2 in bundle sheath cells for utilisatiqn by the photosynthetic carbon reduction cycle carboxylase, ribulose L5-bisphosphate carboxylase-oxygenase (Rubisco). The Rubisco-mediated oxygenase reaction and associated photorespiration are thereby eliminated.
|Item Type:||Book Chapter (Research - B1)|
|Date Deposited:||19 Oct 2010 23:50|
|FoR Codes:||06 BIOLOGICAL SCIENCES > 0601 Biochemistry and Cell Biology > 060104 Cell Metabolism @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%|
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