Rapid and chemically diverse C transfer from trees to mycorrhizal fruit …
网页2024年3月11日 · Quantifying C allocation to symbionts in field conditions can be challenging. A common approach to overcome this challenge and to track C is isotopic 13 C labelling (Epron et al., 2012), which can integrate into any plant or fungal metabolite.
New insights into the mechanisms of plant isotope fractionation …
网页1 天前 · Introduction. Analysis of the systematic 13 C/ 12 C variation (commonly termed ‘ 13 C signal’; abbreviations in Table 1) across tree-ring series is widely used to study past climate conditions, plant–environment interactions, and physiological traits such as leaf water-use efficiency (CO 2 uptake relative to H 2 O loss) (Leavitt & Roden, 2022).Signals found at the whole-tissue or whole ...
Disentangling the abiotic versus biotic controls on C 3 plant leaf ...
网页2021年11月1日 · The carbon isotopic composition of C 3 plant leaf tissue (δ 13 C C3) provides insights into carbon cycling, climate, and vegetation at various spatiotemporal scales. By disentangling the competing influences of climatic and biological factors, modern δ 13 C C3 calibrations can offer quantitative constraints on their applications.
Postphotosynthetic Fractionation in Leaves, Phloem and Stem
网页2022年6月7日 · We will discuss here the different post-assimilation processes that might be able to alter δ 13 C and thus cause a (partial) decoupling between the original leaf isotopic signals and the archived signals in tree rings and aim to provide an update of a recent review also tackling this topic (Gessler et al. 2014).
Stratigraphy of stable isotope ratios and leaf structure within an ...
网页2021年7月9日 · In plants growing in closed canopy forests, leaves measured at varying heights from one individual tree can have markedly different stable isotope ratios of carbon (δ 13 C), oxygen (δ 18 O)...
Shifts in carbon and nitrogen stable isotope composition and ...
网页2020年10月15日 · Our results provide evidence for leaf 13 C-enrichment, 15 N-depletion, and enhanced FA-chain elongation and epicuticular accumulation in the grapevine response to water stress.
Stable isotopes in leaf water of terrestrial plants
网页Thus, leaf water derived isotopic signals can be useful for constraining models of the global carbon cycle, reconstructing past climates, retrospectively analysing plant physiological responses to the environment, and for assigning geographic origins to plant materials and plant-derived products (Dawson et al. 2002; West et al. 2006b).
Stable isotope approaches and opportunities for improving plant ...
网页2022年8月10日 · Here we examine how the use of stable isotopes complements the use of sensors and other tools to expand the physiological toolbox for plant conservation. Stable-isotope ratios or ‘signatures’ in plant tissues, metabolites and xylem water are integrators of physical, chemical and biological processes (Fry, 2006).
Interpreting tree responses to thinning and fertilization using tree ...
网页2011年2月1日 · Tree-ring isotopic records, particularly δ 13 C cell, remain a viable way to reconstruct long-term physiological mechanisms affecting tree carbon gain in response to management and climate fluctuations.
Relationships between leaf morphological traits, nutrient ...
网页2012年3月27日 · We test whether two anchor morphological traits—leaf mass per area (LMA) and leaf dry matter content (LDMC)—are significantly related to a broad range of leaf nutrient concentrations in Mediterranean woody plant species.