Carbohydrate partitioning in crassulacean acid metabolism plants: reconciling potential conflicts of interest

Functional Plant Biology : FPB
Anne M Borland, Antony N Dodd

Abstract

This paper originates from a presentation at the IIIrd International Congress on Crassulacean Acid Metabolism, Cape Tribulation, Queensland, Australia, August 2001. The construction of diel leaf carbon budgets, together with analyses of the δ13C composition of biochemical fractions, was used to examine how crassulacean acid metabolism (CAM) plants adjust carbohydrate partitioning in response to shifting sink demands. For Mesembryanthemum crystallinum L., net carbon budgets indicated clear shifts in assimilate partitioning and in the relative proportions of day : night export as CAM was induced. Different patterns of carbohydrate partitioning in primary and axillary leaves of this species may reflect the different sink priorities of determinate and indeterminate growth. In primary leaves, the high level of diel starch turnover may be a strategy for ensuring production of a critical mass of juvenile tissue that poises the plant for CAM induction. In axillary leaves, the high day-night flux through soluble sugars may ensure ready availability of assimilates for export to reproductive sinks. Carbon isotope ratios were measured for various organic fractions isolated from leaves and fruits of two species of Clusia that differ in CAM ...Continue Reading

Citations

Apr 10, 2004·Journal of Experimental Botany·Anne M Borland, Tahar Taybi
Sep 24, 2010·Journal of Experimental Botany·Johan CeustersMaurice P De Proft
Jul 1, 2005·Functional Plant Biology : FPB·Joseph A M HoltumH Ekkehard Neuhaus
Jul 1, 2005·Functional Plant Biology : FPB·John C Cushman
Apr 28, 2009·Journal of Experimental Botany·Anne M BorlandJ Andrew C Smith
Apr 15, 2015·Journal of Experimental Botany·John A Raven, Howard Griffiths
Jul 4, 2019·Journal of Experimental Botany·Kevin R HultineDavid G Williams
Aug 6, 2018·Photosynthesis Research·Wen Min HuangStephen C Maberly
Jul 1, 2005·Functional Plant Biology : FPB·Elizabeth A NelsonRowan F Sage
Mar 9, 2021·Plant Physiology and Biochemistry : PPB·María Consepsión López NavarreteEleazar Martínez B
Apr 22, 2016·Current Opinion in Plant Biology·Anne M BorlandJohn C Cushman

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