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dc.contributor.author | Huang, Jianbei![]() |
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dc.contributor.author | Hammerbacher, Almuth![]() |
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dc.contributor.author | Forkelova, Lenka![]() |
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dc.contributor.author | Hartmann, Henrik![]() |
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dc.date.accessioned | 2017-08-16T05:20:50Z | |
dc.date.issued | 2017-05 | |
dc.description.abstract | The atmospheric CO2 concentration ([CO2]) is rapidly increasing, and this may have substantial impact on how plants allocate metabolic resources. A thorough understanding of allocation priorities can be achieved by modifying [CO2] over a large gradient, including low [CO2], thereby altering plant carbon (C) availability. Such information is of critical importance for understanding plant responses to global environmental change. We quantified the percentage of daytime whole-plant net assimilation (A) allocated to night-time respiration (R), structural growth (SG), nonstructural carbohydrates (NSC) and secondary metabolites (SMs) during 8 weeks of vegetative growth in winter wheat (Triticum aestivum) growing at low, ambient and elevated [CO2] (170, 390 and 680 ppm). R/A remained relatively constant over a large gradient of [CO2]. However, with increasing C availability, the fraction of assimilation allocated to biomass (SG + NSC + SMs), in particular NSC and SMs, increased. At low [CO2], biomass and NSC increased in leaves but decreased in stems and roots, which may help plants achieve a functional equilibrium, that is, overcome the most severe resource limitation. These results reveal that increasing C availability from rising [CO2] releases allocation constraints, thereby allowing greater investment into long-term survival in the form of NSC and SMs. | en_ZA |
dc.description.department | Forestry and Agricultural Biotechnology Institute (FABI) | en_ZA |
dc.description.department | Microbiology and Plant Pathology | en_ZA |
dc.description.embargo | 2018-05-30 | |
dc.description.librarian | hj2017 | en_ZA |
dc.description.sponsorship | J.H. was funded by Chinese Scholarship Council and Max Planck Institute. | en_ZA |
dc.description.uri | http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-3040 | en_ZA |
dc.identifier.citation | Huang, J.B., Hammerbacher, A., Forkelova, L. & Hartmann, H. 2017, 'Release of resource constraints allows greater carbon allocation to secondary metabolites and storage in winter wheat', Plant, Cell and Environment, vol. 40, no. 5, pp. 672-685. | en_ZA |
dc.identifier.issn | 0140-7791 (print) | |
dc.identifier.issn | 1365-3040 (online) | |
dc.identifier.other | 10.1111/pce.12885 | |
dc.identifier.uri | http://hdl.handle.net/2263/61688 | |
dc.language.iso | en | en_ZA |
dc.publisher | Wiley | en_ZA |
dc.rights | © 2016 John Wiley & Sons Ltd. This is the pre-peer reviewed version of the following article : 'Release of resource constraints allows greater carbon allocation to secondary metabolites and storage in winter wheat', Plant, Cell and Environment, vol. 40, no. 5, pp. 672-685, 2017. doi : 10.1111/pce.12885. The definite version is available at : http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-3040. | en_ZA |
dc.subject | Carbon allocation | en_ZA |
dc.subject | CO2 | en_ZA |
dc.subject | Growth | en_ZA |
dc.subject | Respiration | en_ZA |
dc.subject | Storage carbohydrates | en_ZA |
dc.title | Release of resource constraints allows greater carbon allocation to secondary metabolites and storage in winter wheat | en_ZA |
dc.type | Postprint Article | en_ZA |