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231225s2004 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2004.01153.x
|2 doi
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|a eng
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|a Xu, Cheng-Yuan
|e verfasserin
|4 aut
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|a Leaf respiratory CO2 is 13 C-enriched relative to leaf organic components in five species of C3 plants
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 20.04.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a • Here, we compared the carbon isotope ratios of leaf respiratory CO2 (δ13 CR ) and leaf organic components (soluble sugar, water soluble fraction, starch, protein and bulk organic matter) in five C3 plants grown in a glasshouse and inside Biosphere 2. One species, Populus deltoides, was grown under three different CO2 concentrations. • The Keeling plot approach was applied to the leaf scale to measure leaf δ13 CR and these results were compared with the δ13 C of leaf organic components. • In all cases, leaf respiratory CO2 was more 13 C-enriched than leaf organic components. The amount of 13 C enrichment displayed a significant species-specific pattern, but the effect of CO2 treatment was not significant on P. deltoides. • In C3 plant leaves, 13 C-enriched respiratory CO2 appears widespread. Among currently hypothesized mechanisms contributing to this phenomenon, non-statistical carbon isotope distribution within the sugar substrates seems most likely. However, caution should be taken when attempting to predict the δ13 C of leaf respiratory CO2 at the ecosystem scale by upscaling the relationship between leaf δ13 CR and δ13 C of leaf organic components
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|a Journal Article
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|a C3 plants
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| 650 |
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|a Keeling plot
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| 650 |
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|a carbon isotope
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|a dark respiration
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| 650 |
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4 |
|a fractionation
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| 700 |
1 |
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|a Lin, Guang-Hui
|e verfasserin
|4 aut
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| 700 |
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|a Griffin, Kevin L
|e verfasserin
|4 aut
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| 700 |
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|a Sambrotto, Raymond N
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 163(2004), 3 vom: 20. Sept., Seite 499-505
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:163
|g year:2004
|g number:3
|g day:20
|g month:09
|g pages:499-505
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|u http://dx.doi.org/10.1111/j.1469-8137.2004.01153.x
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