How can we make plants grow faster? A source-sink perspective on growth rate.
| Autor: | White AC; Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK angela.white@sheffield.ac.uk c.p.osborne@sheffield.ac.uk., Rogers A; Biological, Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA., Rees M; Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK., Osborne CP; Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK angela.white@sheffield.ac.uk c.p.osborne@sheffield.ac.uk. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of experimental botany [J Exp Bot] 2016 Jan; Vol. 67 (1), pp. 31-45. Date of Electronic Publication: 2015 Oct 14. |
| DOI: | 10.1093/jxb/erv447 |
| Abstrakt: | Growth is a major component of fitness in all organisms, an important mediator of competitive interactions in plant communities, and a central determinant of yield in crops. Understanding what limits plant growth is therefore of fundamental importance to plant evolution, ecology, and crop science, but each discipline views the process from a different perspective. This review highlights the importance of source-sink interactions as determinants of growth. The evidence for source- and sink-limitation of growth, and the ways in which regulatory molecular feedback systems act to maintain an appropriate source:sink balance, are first discussed. Evidence clearly shows that future increases in crop productivity depend crucially on a quantitative understanding of the extent to which sources or sinks limit growth, and how this changes during development. To identify bottlenecks limiting growth and yield, a holistic view of growth is required at the whole-plant scale, incorporating mechanistic interactions between physiology, resource allocation, and plant development. Such a holistic perspective on source-sink interactions will allow the development of a more integrated, whole-system level understanding of growth, with benefits across multiple disciplines. (© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.) |
| Databáze: | MEDLINE |
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