Journal of Experimental Botany, Vol. 52, No. 356, pp. 0,
April 2001
© 2001 Oxford University Press
Preface
January 2001
Much of our knowledge of biochemical pathways has arisen from studies of whole tissue extracts, or from organelles isolated from whole organs. While these approaches have been of immense value, they have failed to take account of the heterogeneity of the