Leaf structural and hydraulic adjustment with respect to air humidity and canopy position in silver birch (Betula pendula)

Sellin, Arne; Taneda, Haruhiko; Alber, Meeli

doi:10.1007/s10265-019-01106-w

Cited by 16 publications

(8 citation statements)

References 64 publications

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“…This study revealed a strong inverse relationship between LMA and t up across the species (Figure 4). No doubt, this is attributable to species specificity, but leaf general morphology probably also plays a role in this relationship: a lower LMA is accompanied by lower leaf vein density (vein length per area, VLA) in birch leaves compared to aspen [29,70]. The lower the VLA, the greater the contribution of the extravascular pathway and the smaller the role of vascular pathway in water movement in the leaf.…”

Section: Light Effects On Leaf Hydraulic Propertiesmentioning

confidence: 99%

“…Leaf vascular (size of vascular bundles and vessels, vessel number and density, vein density, etc.) and stomatal traits (stomatal size, density, pore area index) exhibit coordinated adjustment, reflecting the balance between transpirational demand and hydraulic supply in silver birch [29]. On the one hand, exposure of birch foliage to high irradiance (changing patterns of clouds and sun flecks within forest canopies) affords, through a fast increase in K L and reduction of leaf resistance to water movement (Figures 1 and 6), an adequate hydraulic supply to keep stomata open, and supports evaporative cooling.…”

Section: Light Effects On Leaf Hydraulic Propertiesmentioning

confidence: 99%

“…Changes in precipitation and weather patterns will have significant consequences on the growth of trees and the functioning of forest ecosystems [25][26][27]. Results from the Free Air Humidity Manipulation (FAHM) experiment show that under increasing atmospheric humidity, trees experience less water loss and there is weaker environmental pressure to invest resources into developing effective water conducting tissues, resulting in reduced hydraulic conductance in leaves [28,29]. In the case of climate extremes (heat waves, severe droughts), which have been predicted to become more frequent during the 21st century across Europe, reduced hydraulic efficiency might represent a potential threat in hemi-boreal forest ecosystems [30].…”

Section: Introductionmentioning

confidence: 99%

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Leaf and Branch Hydraulic Plasticity of Two Light-Demanding Broadleaved Tree Species Differing in Water-Use Strategy

Õunapuu-Pikas

Venisse

Sellin

et al. 2022

Forests

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Global climate change creates new environmental scenarios and selective pressures; thus, a better understanding of the plasticity of plant functional traits is needed to predict how plant species will respond to shifts in climate. Among the important functional traits for plants are their hydraulic properties which ultimately determine their photosynthetic capacity, growth rate, and survival in a changing environment. In this study, the light sensitivity of leaf (KL) and branch hydraulic conductance (KB) to fast changes in irradiance, and hydraulic plasticity (PIh) was studied in two broadleaved tree species differing in water-use strategy—silver birch (Betula pendula) and hybrid aspen (Populus × wettsteinii). The KL increased by a factor of 3.5 and 1.5 from minimal values recorded in darkness to maximal values in high light conditions for birch and aspen, respectively, indicating a significantly higher PIh for birch (0.72) than for aspen leaves (0.35). KB increased 1.5-fold from dark to light conditions for both species. The high light sensitivity of KL and KB provides a regulatory mechanism to maintain a balance between transpirational demand and hydraulic supply. The plasticity of these traits increases the ability of plants to cope with a rapidly changing environment and to adapt to global climate change.

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Section: Light Effects On Leaf Hydraulic Propertiesmentioning

confidence: 99%

Section: Light Effects On Leaf Hydraulic Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Leaf and Branch Hydraulic Plasticity of Two Light-Demanding Broadleaved Tree Species Differing in Water-Use Strategy

Õunapuu-Pikas

Venisse

Sellin

et al. 2022

Forests

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“…Thus, the research of N-precipitation interaction is more accord with natural status. Precipitation affects the changes in belowground and aboveground communities, and its intensity is a critical factor in habitat alteration—for example, increasing water can increase vegetation production ( Fu et al., 2018 ) and decrease the conductance of leaves ( Sellin et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Long-term water use efficiency and non-structural carbohydrates of dominant tree species in response to nitrogen and water additions in a warm temperate forest

et al. 2022

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Nitrogen (N) deposition tends to accompany precipitation in temperate forests, and vegetation productivity is mostly controlled by water and N availability. Many studies showed that tree species response to precipitation or N deposition alone influences, while the N deposition and precipitation interactive effects on the traits of tree physiology, especially in non-structural carbohydrates (NSCs) and long-term water use efficiency (WUE), are still unclear. In this study, we measured carbon stable isotope (δ13C), total soluble sugar and starch content, total phenols, and other physiological traits (e.g., leaf C:N:P stoichiometry, lignin, and cellulose content) of two dominant tree species (Quercus variabilis Blume and Liquidambar formosana Hance) under canopy-simulated N deposition and precipitation addition to analyze the changes of long-term WUE and NSC contents and to explain the response strategies of dominant trees to abiotic environmental changes. This study showed that N deposition decreased the root NSC concentrations of L. formosana and the leaf lignin content of Q. variabilis. The increased precipitation showed a negative effect on specific leaf area (SLA) and a positive effect on leaf WUE of Q. variabilis, while it increased the leaf C and N content and decreased the leaf cellulose content of L. formosana. The nitrogen–water interaction reduced the leaf lignin and total phenol content of Q. variabilis and decreased the leaf total phenol content of L. formosana, but it increased the leaf C and N content of L. formosana. Moreover, the response of L. formosana to the nitrogen–water interaction was greater than that of Q. variabilis, highlighting the differences between the two dominant tree species. The results showed that N deposition and precipitation obviously affected the tree growth strategies by affecting the NSC contents and long-term WUE. Canopy-simulated N deposition and precipitation provide a new insight into the effect of the nitrogen–water interaction on tree growth traits in a temperate forest ecosystem, enabling a better prediction of the response of dominant tree species to global change.

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“…A leaf serves as a specialized organ for photosynthesis [1], and the loosely stacked leaves compose the principal canopy volume [2]. The spatial distribution of leaves in the canopy has noticeable impacts on leaf age [3], physiology, and anatomical traits [4]. The structure of the canopy modifies its microenvironment conditions [5], such as photosynthetic photon flux density (PPFD) [6], temperature [7] and humidity [8].…”

Section: Introductionmentioning

confidence: 99%

Whole-Canopy Photosynthetic Characterization of Apple Tree and the Effects Induced by Grafting on Rootstocks with Different Vigor

Zhang

Guo

et al. 2022

Horticulturae

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Leaf photosynthesis is pivotal for the synthesis of carbohydrates; however, the growth and development of horticultural crops are more closely related to canopy photosynthetic capacity. Measurements of canopy photosynthesis allow a better evaluation of the fruit tree performance at the canopy scale. Therefore, an open chamber system to determine instantaneous canopy apparent photosynthesis (CAPi) was investigated. CAPi slightly overestimated the biomass accumulation by 5.9%, which revealed that the CAPi method is valuable for quantifying canopy photosynthesis. Further, many woody horticultural plants are usually grafted for propagation, such as apples, whereas the rootstocks always influence the canopy size and photosynthesis. In this study, the effect of dwarfing, semi-dwarfing, and vigorous apple rootstocks on canopy photosynthesis was studied. Compared to vigorous rootstock, dwarfing rootstock significantly reduced the leaf net photosynthetic rate and total leaf area by 20.8% and 53.1%, respectively, and resulted in a 59.7% reduction in CAPi. Throughout the study, CAPi was an effective method that should be considered for canopy photosynthesis measurement of horticultural crops in the future.

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Leaf structural and hydraulic adjustment with respect to air humidity and canopy position in silver birch (Betula pendula)

Cited by 16 publications

References 64 publications

Leaf and Branch Hydraulic Plasticity of Two Light-Demanding Broadleaved Tree Species Differing in Water-Use Strategy

Leaf and Branch Hydraulic Plasticity of Two Light-Demanding Broadleaved Tree Species Differing in Water-Use Strategy

Long-term water use efficiency and non-structural carbohydrates of dominant tree species in response to nitrogen and water additions in a warm temperate forest

Whole-Canopy Photosynthetic Characterization of Apple Tree and the Effects Induced by Grafting on Rootstocks with Different Vigor

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