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| DOI: | 10.1111/j.1469-8137.2010.03457.x |
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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03457.x/full
Last checked: 09/22/2010
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03457.x/pdf
Last checked: 09/22/2010
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Lehmeier, Christoph Andreas;
Lattanzi, Fernando Alfredo;
Gamnitzer, Ulrike;
Schäufele, Rudi;
Schnyder, Hans |
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| Author Affiliation: | Lehrstuhl für Grünlandlehre, Department für Pflanzenwissenschaften, Technische Universität München, Germany |
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| Title: | Day-length effects on carbon stores for respiration of perennial ryegrass |
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| Section: | Rapid report
Other records with the "Rapid report" Section
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| Source: | New Phytologist. Vol. 188, No. 3, November 2010, p. 719-725. |
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| Publishing Information: | Oxford, England: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 7 |
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| Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03457.x/abstract
Last checked: 09/22/2010
Notes: Abstract only |
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| Keywords: | TIC Keywords: Biomass determination; Carbohydrate reserves; Carbon dioxide; Lolium perenne; Nutrient management; Photoperiod; Physiological processes; Respiration; Starches
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| Abstract/Contents: | "The mechanism controlling the use of stored carbon in respiration is poorly understood. Here, we explore if the reliance on stores as respiratory substrate depends on day length. Lolium perenne (perennial ryegrass) was grown in continuous light (275 μmol photons m-2 s-1) or in a 16 : 8 h day : night regime (425 μmol m-2 s-1) during the photoperiod), with the same daily photosynthetic photon flux density (PPFD). Plants in stands were labelled with 13CO2 : 12CO2 for various time intervals. The rates and isotopic signatures of shoot- and root-respired CO2 were measured after labelling, and water-soluble carbohydrates were determined in biomass. The tracer kinetics in respired CO2 was analysed with compartmental models to infer the sizes, half-lives and contributions of respiratory substrate pools. Stores were the main source for respiration in both treatments (c. 60% of all respired carbon). But, continuous light slowed the turnover (+270%) and increased the size (+160%) of the store relative to the 16 : 8 h day : night regime. This effect corresponded with a greatly elevated fructan content. Yet, day length had no effect on sizes and half-lives of other pools serving respiration. We suggest that the residence time of respiratory carbon was strongly influenced by partitioning of carbon to fructan stores." |
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| Language: | English |
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| References: | 38 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lehmeier, C. A., F. A. Lattanzi, U. Gamnitzer, R. Schäufele, and H. Schnyder. 2010. Day-length effects on carbon stores for respiration of perennial ryegrass. New Phytol. 188(3):p. 719-725. |
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| DOI: 10.1111/j.1469-8137.2010.03457.x |
| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03457.x/full
Last checked: 09/22/2010
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03457.x/pdf
Last checked: 09/22/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2219226 |
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