Identification, distribution, and quantification of biominerals in a deciduous forest

Krieger, Célia; Calvaruso, Christophe; Morlot, Christophe; Uroz, Stéphane; Salsi, Lise; Turpault, Marie–Pierre

doi:10.1111/gbi.12223

Cited by 17 publications

(12 citation statements)

References 64 publications

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“…Although other studies verifi ed the presence of P, K, Mg, and S in crystals, some plant species (i.e., Piper arboreum var. arboreum, P. callosum, P. tuberculatum, Acacia robeorum, Acacia stipuligera, Acacia stellaticeps, and Fagus sylvatica) have high concentrations of these elements (SILVA et al, 2014, HE et al, 2014, KRIEGER et al, 2017. Although Al was detected in all analyzed crystals (Table 3), one of the needle crystals from the -K treatment was comprised of 2.79% Al.…”

Section: Crystal Formation and Precipitation Of Elementsmentioning

confidence: 95%

“…Advanced microscopy and spectroscopy techniques have allowed for a more comprehensive assessment of the elemental composition of plant tissues (DINH et al, 2015;KRIEGER et al, 2017). In the evaluation of elemental accumulation, studies have concentrated on the elemental distribution in different tissues and plant cells (CONN; GILLIHAM, 2010) including crystals (HE et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In the evaluation of elemental accumulation, studies have concentrated on the elemental distribution in different tissues and plant cells (CONN; GILLIHAM, 2010) including crystals (HE et al, 2014). In such cases, SEM combined with EDS has been used efficiently in the microanalysis of essential and potentially toxic elements in plant tissues (SILVA et al, 2014;HE et al, 2015;KRIEGER et al, 2017). However, there is a paucity of information on elemental accumulation in A. angustifolia needles.…”

Section: Introductionmentioning

confidence: 99%

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SOIL FERTILITY AFFECTS ELEMENTAL DISTRIBUTION IN NEEDLES OF THE CONIFER Araucaria angustifolia: A MICROANALYTICAL STUDY

Barbosa

Constantino

Zanette

et al. 2017

CERNE

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Araucaria angustifolia is a conifer species found in South American subtropical forests that comprises less than 3% of the native vegetation and little is known concerning the accumulation of nutritional elements in its needles. In this study, scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS) was used to assess the elemental distribution in needles. Needles were selected from 28 month-old plants grown in a fertilization experiment supplied with: 1) N, P, and K; 2) N and P; and 3) N and K. In microanalysis, four types of specialized needle tissues (adaxial epidermis, palisade mesophyll, spongy mesophyll and abaxial epidermis) were evaluated for elemental composition (C, O, P, K, Ca, S and Al). When crystals were detected, the concentrations of 12 elements were determined (C, O, P, K, Ca, S, Al, Fe, Mg, Na, Si, and Cl). Under low soil P and K, these elements were found in low concentrations in the epidermis, mesophyll, and crystals. Under low soil P, Ca and K accumulated in the spongy mesophyll, while under low soil K only Ca accumulated in this tissue. In addition, low soil P or K availability favored the formation of crystals; crystals under low soil K availability had more Ca and Mg. Soil P and K availability affected the distribution of elements in needles of A. angustifolia, in that type of tissue and formation of crystals were key to the nutrient dynamics in needles.

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Section: Crystal Formation and Precipitation Of Elementsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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SOIL FERTILITY AFFECTS ELEMENTAL DISTRIBUTION IN NEEDLES OF THE CONIFER Araucaria angustifolia: A MICROANALYTICAL STUDY

Barbosa

Constantino

Zanette

et al. 2017

CERNE

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“…However, Krieger et al (2017) recently showed that Si in deciduous trees (European beech, Fagus sylvatica and sycamore, Acer pseudoplatanus) generally precipitates as a thin layer (< 0.5 µm) around the cells, especially in roots and bark. These small-scale phytogenic Si were demonstrated to influence various soil and plant processes (Meunier et al, 2017;Puppe et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the high Si content of fine roots (Krieger et al, 2017;Maguire et al, 2017) and their rapid turnover in forest ecosystems (approximately 1 year in beech forests in Europe; Brunner et al, 2013), we hypothesized that fine roots could significantly contribute to the input of BSi into the soil.…”

Section: Introductionmentioning

confidence: 99%

Contribution of fine tree roots to the silicon cycle in a temperate forest ecosystem developed on three soil types

Turpault

Calvaruso²,

Kirchen

et al. 2018

Biogeosciences

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Abstract. The role of forest vegetation in the silicon (Si) cycle has been widely examined. However, to date, little is known about the specific role of fine roots. The main objective of our study was to assess the influence of fine roots on the Si cycle in a temperate forest in north-eastern France. Silicon pools and fluxes in vegetal solid and solution phases were quantified within each ecosystem compartment, i.e. in the atmosphere, above-ground and below-ground tree tissues, forest floor and different soil layers, on three plots, each with different soil types, i.e. Dystric Cambisol (DC), Eutric Cambisol (EC) and Rendzic Leptosol (RL). In this study, we took advantage of a natural soil gradient, from shallow calcic soil to deep moderately acidic soil, with similar climates, atmospheric depositions, species compositions and management. Soil solutions were measured monthly for 4 years to study the seasonal dynamics of Si fluxes. A budget of dissolved Si (DSi) was also determined for the forest floor and soil layers. Our study highlighted the major role of fine roots in the Si cycle in forest ecosystems for all soil types. Due to the abundance of fine roots mainly in the superficial soil layers, their high Si concentration (equivalent to that of leaves and 2 orders higher than that of coarse roots) and their rapid turnover rate (approximately 1 year), the mean annual Si fluxes in fine roots in the three plots were 68 and 110 kgha-1yr-1 for the RL and the DC, respectively. The turnover rates of fine roots and leaves were approximately 71 and 28 % of the total Si taken up by trees each year, demonstrating the importance of biological recycling in the Si cycle in forests. Less than 1 % of the Si taken up by trees each year accumulated in the perennial tissues. This study also demonstrated the influence of soil type on the concentration of Si in the annual tissues and therefore on the Si fluxes in forests. The concentrations of Si in leaves and fine roots were approximately 1.5–2.0 times higher in the Si-rich DC compared to the Si-poor RL. In terms of the DSi budget, DSi production was large in the three plots in the forest floor (9.9 to 12.7 kgha-1yr-1), as well as in the superficial soil layer (5.3 to 14.5 kgha-1yr-1), and decreased with soil depth. An immobilization of DSi was even observed at 90 cm depth in plot DC (−1.7 kgha-1yr-1). The amount of Si leached from the soil profile was relatively low compared to the annual uptake by trees (13 % in plot DC to 29 % in plot RL). The monthly measurements demonstrated that the seasonal dynamics of the DSi budget were mainly linked to biological activity. Notably, the peak of dissolved Si production in the superficial soil layer occurred during winter and probably resulted from fine-root decomposition. Our study reveals that biological processes, particularly those involving fine roots, play a predominant role in the Si cycle in temperate forest ecosystems, while the geochemical processes appear to be limited.

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The Leaf as a Sustainable and Renewable System

et al. 2017

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Leaves play a critical role in the Earth's biosphere, regulating weather, renewing mineral nutrients and maintaining biotic processes to support both flora and fauna. Leaves also form an important resource for consumers. Together, plant hosts and consumers represent complex adaptive selection. We used systems dynamic and holon models to understand the ability of the leaf to meet both host plant and host consumer criteria resulting in socio‐ecological system sustainability. We first identified dynamic cycles facilitated by the leaf as a component of both plant and consumer systems. Each of the variables in these loops serves a critical role in the production and function of the leaf, recycling energy and matter through plant and consumer systems. Control feedback balances the system, optimizing opposing selective forces to meet criteria for viability of host plants and usability by consumers, which return benefits through various services. We then examine the organization of the leaf host system, revealing mutually closed sub‐systems corresponding to a definition of ‘component life’. We thus show the leaf host relation to be a theoretically ‘whole’ system having positive, sustainable impacts on biomass, food, energy, etc. These results may inform more general sustainability assessments by offering a mathematical definition of sustainability as emergent, cyclical organization in ecosystems. Copyright © 2017 John Wiley & Sons, Ltd.

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Identification, distribution, and quantification of biominerals in a deciduous forest

Cited by 17 publications

References 64 publications

SOIL FERTILITY AFFECTS ELEMENTAL DISTRIBUTION IN NEEDLES OF THE CONIFER Araucaria angustifolia: A MICROANALYTICAL STUDY

SOIL FERTILITY AFFECTS ELEMENTAL DISTRIBUTION IN NEEDLES OF THE CONIFER Araucaria angustifolia: A MICROANALYTICAL STUDY

Contribution of fine tree roots to the silicon cycle in a temperate forest ecosystem developed on three soil types

The Leaf as a Sustainable and Renewable System

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