Distinct silicon and germanium pathways in the soil-plant system: Evidence from banana and horsetail

  title={Distinct silicon and germanium pathways in the soil-plant system: Evidence from banana and horsetail},
  author={Camille Delvigne and Sophie Opfergelt and Damien Cardinal and Bruno Delvaux and Luc Andr{\'e}},
  journal={Journal of Geophysical Research},
Plants strongly impact the continental silicon cycle by taking up Si and precipitating opal phytoliths which are recycled into the soil. Studying Ge incorporation, a chemical analog of Si, relative to Si may provide a useful tracer of Si pathways. However, Ge uptake and transport through plants and the impact on Ge/Si of phytoliths remain poorly understood. Here, we report Ge uptake and accumulation and Ge/Si fractionation in all plant parts and solutions from: (1) hydroponic banana, (2) in… 
Accumulation of germanium (Ge) in plant tissues of grasses is not solely driven by its incorporation in phytoliths
Ge/Si ratios of plant phytoliths have been widely used to trace biogeochemical cycling of Si. However, until recently, information on how much of the Ge and Si transferred from soil to plants is
Germanium in the soil-plant system—a review
There is a need for future studies on the uptake mechanisms and stoichiometry of Ge uptake under field conditions and plant-soil-microbe interactions in the rhizosphere as well as the chemical speciation in different plant parts.
Subcellular localization of silicon and germanium in grass root and leaf tissues by SIMS: evidence for differential and active transport
Silicon transport and incorporation into plant tissue is important to both plant physiological function and to the influence plants have on ecosystem silica cycling. However, the mechanisms
Silicon uptake and isotope fractionation dynamics by crop species
Abstract. That silicon is an important element in global biogeochemical cycles is widely recognised. Recently, its relevance for global crop production has gained increasing attention in light of
Silicon isotope fractionation and uptake dynamics of three crop plants: laboratory studies with transient silicon concentrations
Abstract. Silicon has been recognized an important element in global biogeochemical cycles for a long time. Recently, its relevance for global crop production gains increasing attention. Silicon is
Tracing the origin of dissolved silicon transferred from various soil-plant systems towards rivers: a review
Silicon (Si) released as H4SiO4 by weathering of Si-containing solid phases is partly recycled through vege- tation before its land-to-rivers transfer. By accumulating in terrestrial plants to a
Tracing mechanisms controlling the release of dissolved silicon in forest soil solutions using Si isotopes and Ge/Si ratios
The terrestrial biogenic Si (BSi) pool in the soil plant system is ubiquitous and substantial, likely impacting the land-ocean transfer of dissolved Si (DSi). Here, we consider the mechanisms
Variations of δ30Si and Ge/Si with weathering and biogenic input in tropical basaltic ash soils under monoculture
In soils, silicon released by mineral weathering can be retrieved from soil solution through clay formation, Si adsorption onto secondary oxides and plant uptake, thereby impacting the Si-isotopic
Plant impact on the coupled terrestrial biogeochemical cycles of silicon and carbon: Implications for biogeochemical carbon sequestration
Abstract The coupled terrestrial biogeochemical cycles of silicon (Si) and carbon (C) that are driven by plant action play a crucial role in the regulation of atmospheric CO2. Generally, the
Biogenic and pedogenic controls on Si distributions and cycling in grasslands of the Santa Cruz soil chronosequence, California
Abstract Biogenic and pedogenic processes control silica cycling in grasslands growing on a soil chronosequence and dominated by strong seasonal variabilities of a Mediterranean climate. Shallow pore


The ratio of germanium to silicon in plant phytoliths: quantification of biological discrimination under controlled experimental conditions
Slight differences in the chemical behavior of germanium (Ge) and silicon (Si) during soil weathering enable Ge/Si ratios to be used as a tracer of Si pathways. Mineral weathering and biogenic
Silicon Isotopic Fractionation by Banana (Musa spp.) Grown in a Continuous Nutrient Flow Device
The determination of the plant-induced Si-isotopic fractionation is a promising tool to better quantify their role in the continental Si cycle. Si-isotopic signatures of the different banana plant
Plant impact on the biogeochemical cycle of silicon and related weathering processes
Abstract The contribution of plants to the biogeochemical cycle of Si and related weathering processes was studied in an equatorial rainforest ecosystem (Congo) where the biologic turnover of Si is
Chapter 2 Silicon as a beneficial element for crop plants
Silicon (Si) has not been proven to be an essential element for higher plants, but its beneficial effects on growth have been reported in a wide variety of crops, including rice, wheat, barley, and
A Transporter Regulating Silicon Distribution in Rice Shoots[W]
Results indicate that Lsi6 is a transporter responsible for the transport of Si out of the xylem and subsequently affects the distribution of Si in the Leaf, which helps plants to overcome biotic and abiotic stresses.
Effects, distribution and uptake of silicon in banana (Musa spp.) under controlled conditions
Three contrasted genotypes of Musa spp. (M. acuminata cv Grande Naine, M. acuminata spp. Banksii and M. balbisiana spp. Tani) were grown for 6 weeks under optimal conditions in hydroponics and were
Germanium-silicon fractionation in the weathering environment
Abstract We present a detailed study of germanium behavior in the soil weathering environment as an important step toward using the Ge/Si system as a tracer of silicate weathering processes in both
Silicon isotope fractionation in rice plants, an experimental study on rice growth under hydroponic conditions
Silicon (Si) isotope composition and Si distribution among different rice plant organs and different parts of rice leaf at maturity were studied, which may provide new insights into the mechanism of
Aqueous silicate complexes in wheat, Triticum aestivum L.
The efficiency by which the plant concentrates aqueous silicon indicates active mechanisms of silicon transport across root cell membranes, and there was no evidence of organosilicate complexes.
Silicon isotope study on rice plants from the Zhejiang province, China
Silicon isotope compositions of 16 rice plants from the Zhejiang province were studied, and potential applications of silicon isotope study to agriculture and biogeochemistry were discussed. It is