Opportunities for improving phosphorus-use efficiency in crop plants

E.J. Veneklaas, H. Lambers, P.M. Finnegan, C.A. Price, M.W. Shane, J.A. Raven, J. Bragg, C.E. Lovelock, W.C. Plaxton, W.-R. Scheible, P.J. White

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    Abstract

    Limitation of grain crop productivity by phosphorus (P) is widespread and will probably increase in the future. Enhanced P efficiency can be achieved by improved uptake of phosphate from soil (P-acquisition efficiency) and by improved productivity per unit P taken up (P-use efficiency). This review focuses on improved P-use efficiency, which can be achieved by plants that have overall lower P concentrations, and by optimal distribution and redistribution of P in the plant allowing maximum growth and biomass allocation to harvestable plant parts. Significant decreases in plant P pools may be possible, for example, through reductions of superfluous ribosomal RNA and replacement of phospholipids by sulfolipids and galactolipids. Improvements in P distribution within the plant may be possible by increased remobilization from tissues that no longer need it (e.g. senescing leaves) and reduced partitioning of P to developing grains. Such changes would prolong and enhance the productive use of P in photosynthesis and have nutritional and environmental benefits. Research considering physiological, metabolic, molecular biological, genetic and phylogenetic aspects of P-use efficiency is urgently needed to allow significant progress to be made in our understanding of this complex trait.
    Original languageEnglish
    Pages (from-to)306-320
    Number of pages15
    JournalNew Phytologist
    DOIs
    Publication statusPublished - 1 Jan 2012

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    Veneklaas, E. J., Lambers, H., Finnegan, P. M., Price, C. A., Shane, M. W., Raven, J. A., Bragg, J., Lovelock, C. E., Plaxton, W. C., Scheible, W-R., & White, P. J. (2012). Opportunities for improving phosphorus-use efficiency in crop plants. New Phytologist, 306-320. https://doi.org/10.1111/j.1469-8137.2012.04190.x