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What can tracer profiles tell us about the mechanisms giving rise to them?

Minchin, P. E. H. and Lees, M. J. and Thorpe, M. R. and Young, P. C. (1996) What can tracer profiles tell us about the mechanisms giving rise to them? Journal of Experimental Botany, 47 (2). pp. 275-284. ISSN 1460-2431

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Abstract

For a long time, tracer profiles observed at various positions along the phloem transport pathway have been used to infer details about both the mechanisms and the amount of flow through this pathway within whole plants. But the mechanisms still elude us. This paper investigates why this is so and shows that although the amount of mechanistic information available from tracer profiles is rather limited, they do provide reliable quantitative measurements of the amount of flow. Detailed quantitative analysis of tracer profiles in barley leaves is used to illustrate techniques of mechanistic interpretation from input-output analysis and indicates the need of two compartments to describe carbon flow through a leaf from fixation to phloem loading.

Item Type: Article
Journal or Publication Title: Journal of Experimental Botany
Uncontrolled Keywords: Tracer profiles ; phloem transport pathway ; flow-through mechanisms ; quantitative analysis ; barley
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22138
Deposited By: ep_ss_importer
Deposited On: 17 Feb 2009 12:57
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:56
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22138

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