Will C3 crops enhanced with the C4 CO2-concentrating mechanism live up to their full potential (yield)?

Driever, S.M. and Kromdijk, J. (2013) Will C3 crops enhanced with the C4 CO2-concentrating mechanism live up to their full potential (yield)? Journal of Experimental Botany. pp. 1-11.

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Abstract

Sustainably feeding the world’s growing population in future is a great challenge and can be achieved only by increasing yield per unit land surface. Efficiency of light interception and biomass partitioning into harvestable parts (harvest index) has been improved substantially via plant breeding in modern crops. The conversion efficiency of intercepted light into biomass still holds promise for yield increase. This conversion efficiency is to a great extent constrained by the metabolic capacity of photosynthesis, defined by the characteristics of its components. Genetic manipulations are increasingly applied to lift these constraints, by improving CO2 or substrate availability for the photosynthetic carbon reduction cycle. Although these manipulations can lead to improved potential growth rates, this increase might be offset by a decrease in performance under stress conditions. In this review, we assess possible positive or negative effects of the introduction of a CO2-concentrating mechanism in C3 crop species on crop potential productivity and yield robustness.

Item Type: Article
Uncontrolled Keywords: C4 photosynthesis, CO2-concentrating mechanism, crop productivity, nitrogen metabolism, photorespiration, redox signalling, yield improvement
Author Affiliation: School of Biological Sciences, University of Essex, Colchester, UK
Subjects: Crop Improvement
Plant Physiology and Biochemistry > Plant Physiology
Divisions: General
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 20 Apr 2013 10:21
Last Modified: 20 Apr 2013 10:21
Official URL: http://dx.doi.org/10.1093/jxb/ert103
URI: http://eprints.icrisat.ac.in/id/eprint/10310

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