2022
DOI: 10.1007/978-3-030-92698-4_15
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Post-photosynthetic Carbon, Oxygen and Hydrogen Isotope Signal Transfer to Tree Rings—How Timing of Cell Formations and Turnover of Stored Carbohydrates Affect Intra-annual Isotope Variations

Abstract: In this chapter, we discuss post-photosynthetic processes that affect intra-annual variation in the stable isotopes of tree rings, such as timing of cell formations and turnover of stored carbohydrates, by combining research findings gained by using either natural-abundance or artificially-enriched carbon, oxygenand hydrogen isotopes. We focus on within-ring variation in stable isotope ratios, with an emphasis on aligning observed ratios in whole wood or extracted cellulose to seasonal dynamics in climate and … Show more

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Cited by 11 publications
(13 citation statements)
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“…This kinetic isotope effect might have an important role in the isotopic exchange between metabolic intermediates and water during post‐photosynthetic metabolism, creating fractionation. This type of isotope exchange during plant biosynthetic pathways involves a preferential fractionation of light O–H isotopes into organic molecules and the consequent enrichment of heavy isotopes in the water, as shown for several biochemical processes such as lipid and carbohydrates biosynthesis (Cormier et al, 2018), including cellulose (Hermoso de Mendoza et al, 2022; Kagawa & Battipaglia, 2022; Sternberg et al, 1986). Post‐photosynthetic O–H isotopic exchange mainly occurs via carbonyl hydration, which is a good candidate reaction to explain xylem transformations, as it involves isotopic exchange between xylem water and metabolites during cellulose biosynthesis (Cheesman & Cernusak, 2017; Hill et al, 1995; Samuel & Silver, 1965; Sternberg & Deniro, 1983).…”
Section: Discussionmentioning
confidence: 95%
See 1 more Smart Citation
“…This kinetic isotope effect might have an important role in the isotopic exchange between metabolic intermediates and water during post‐photosynthetic metabolism, creating fractionation. This type of isotope exchange during plant biosynthetic pathways involves a preferential fractionation of light O–H isotopes into organic molecules and the consequent enrichment of heavy isotopes in the water, as shown for several biochemical processes such as lipid and carbohydrates biosynthesis (Cormier et al, 2018), including cellulose (Hermoso de Mendoza et al, 2022; Kagawa & Battipaglia, 2022; Sternberg et al, 1986). Post‐photosynthetic O–H isotopic exchange mainly occurs via carbonyl hydration, which is a good candidate reaction to explain xylem transformations, as it involves isotopic exchange between xylem water and metabolites during cellulose biosynthesis (Cheesman & Cernusak, 2017; Hill et al, 1995; Samuel & Silver, 1965; Sternberg & Deniro, 1983).…”
Section: Discussionmentioning
confidence: 95%
“…Moreover, water participates in biochemical reactions linked to the biosynthesis of many molecules, undergoing biochemical isotope fractionation (da Silveira Lobo Sternberg, 1988;Yakir & DeNiro, 1990). Some of these metabolic pathways involving xylem water may be responsible for the gradual enrichment observed, due to difference in chemical reaction rates between light and heavy as shown for several biochemical processes such as lipid and carbohydrates biosynthesis (Cormier et al, 2018), including cellulose (Hermoso de Mendoza et al, 2022;Kagawa & Battipaglia, 2022;Sternberg et al, 1986). Post-photosynthetic O-H isotopic exchange mainly occurs via carbonyl hydration, which is a good candidate reaction to explain xylem transformations, as it involves isotopic exchange between xylem water and metabolites during cellulose biosynthesis (Cheesman & Cernusak, 2017;Hill et al, 1995;Samuel & Silver, 1965;Sternberg & Deniro, 1983).…”
Section: H and 18 O Enrichment From Root To Bolementioning
confidence: 99%
“…The isotope effects occurring after photosynthesis are referred to as post-photosynthetic fractionations (Badeck et al, 2005). They are numerous, complex to integrate and hinder the physiological interpretation of isotope signals (Gessler & Ferrio, 2022;Kagawa & Battipaglia, 2022). Leppä et al simplified these complexities by assessing leaf sugars (a step closer to assimilates than sugars in sink tissue or the final dry matter).…”
Section: Terminologymentioning
confidence: 99%
“…However, fractionations during assimilate transport (e.g. Gessler et al., 2004) and metabolic processes (Kagawa & Battipaglia, 2022; Wieloch et al., 2022; Yakir & DeNiro, 1990), including both kinetic and equilibrium isotope exchange with xylem water, resulting in a dampening of the initial leaf‐level hydrological signal. Importantly, the metabolic‐associated isotope effects are different for O and H (Hayes, 2001; Holloway‐Phillips et al., 2022), leading to differential isotope patterns in cellulose (Holloway‐Phillips et al., 2023).…”
Section: Introductionmentioning
confidence: 99%