Abstract
Germanium (Ge) is widespread in the Earth’s crust. As a cognate element to silicon (Si), Ge shows very similar chemical characteristics. Recent use of Ge/Si to trace Si cycles and changes in weathering over time, growing demand for Ge as raw material, and consequently an increasing interest in Ge phytomining have contributed to a growing interest in this previously rather scarcely considered element in geochemical studies. This review deals with the distribution of Ge in primary minerals and surface soils as well as the factors influencing the mobility of Ge in soils including the sequestration of Ge in secondary mineral phases and soil organic matter. Furthermore, the uptake and accumulation of Ge in plants and effects of plant-soil relationships on the availability of Ge in soils and the biogeochemical cycling of Ge are discussed. The formation of secondary soil minerals and soil organic matter are of particular importance for the concentration of Ge in plant-available forms. The transfer from soil to plant is usually low and shows clear differences between species belonging to the functional groups of grasses and forbs. Possible uptake mechanisms in the rhizosphere are discussed. However, the processes that are involved in the formation of plant-available Ge pools in soils and consequently its biogeochemical cycling are not yet well understood. There is, therefore, 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.
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References
Abbasi HU, Eroglu AE, Anwari MA, Volkan M (2001) Evaluation of dissolution methods in the presence of high chloride content for the determination of germanium in geological matrices by hydride generation atomic absorption spectrometry. Anal Sci 17:559–560
Alfassi ZB, Wai CM (1992) Preconcentration techniques for trace elements. CRC Press, Boca Raton
Alloway BJ (1995) Heavy metals in soils. Chapman & Hall, Glasgow
Anders AM, Sletten RS, Derry LA, Hallet B (2003) Germanium//silicon ratios in the Copper River Basin, Alaska: Weathering and partitioning in periglacial versus glacial environments. J Geophys Res 108:6005. https://doi.org/10.1029/2003JF000026
Anderson CWN, Brooks RR, Chiarucci A, LaCoste CJ, Leblanc M, Robinson BH, Simcock R, Stewart RB (1999) Phytomining for nickel, thallium and gold. J Geochem Explor 67:407–415
Asai K (1980) Miracle cure: organic germanium. Japan Publications/ Kodansha International via Harper and Row, New York
Backes CA, McLaren RG, Rate AW, Swift RS (1995) Kinetics of cadmium and cobalt desorption from iron and manganese oxides. Soil Sci Am J 59:778–785
Baker AJM, Brooks RR (1989) Terrestrial higher plants which hyperaccumulate metallic elements—a review of their distribution, ecology and phytochemistry. Biorecovery 1:81–126
Ballesta RJ, Bueno PC, Rubí JAM, Giménez RG (2010) Pedo-geochemical baseline content levels and soil quality reference values of trace elements in soils from the Mediterranean (Castilla La Mancha, Spain). Cent Eur J Geosci 2:441–454
Baronas JJ, Hammond DE, Berelson WM, McManus J, Severmann S (2016) Germanium–silicon fractionation in a river-influenced continental margin: the northern Gulf of Mexico. Geochim Cosmochim Acta 178:124–142
Baronas JJ, Hammond DE, McManus J, Siebert C, Wheat G (2017) A global Ge isotope budget. Geochim Cosmochim Acta 203:265–283
Bernstein LR (1985) Germanium geochemistry and mineralogy. Geochim Cosmochim Acta 49:2409–2422
Bernstein LR, Waychunas GA (1987) Germanium crystal chemistry in hematite and goethite from the Apex Mine, Utah, and some new data on germanium in aqueous solution and in stottite. Geochim Cosmochim Acta 51:623–630
Blecker SW, King SL, Derry LA, Chadwick OA, Ippolito JA, Kelly EF (2007) The ratio of germanium to silicon in plant phytoliths: quantification of biological discrimination under controlled experimental conditions. Biogeochemistry 86:189–199
Boyukbayram AE, Volkan M (2000) Cloud point pre-concentration of germanium and determination by hydride generation atomic absorption spectrometry. Spectrochim Acta 55:1073–1080
Braun JJ, Marechal JC, Riotte J, Boeglin JL, Bedimo Bedimo JP, Ndam Ngoupayou JR, Viers J (2012) Elemental weathering fluxes and saprolite production rate in a Central African lateritic terrain (Nsimi, South Cameroon). Geochim Cosmochim Acta 99:243–270
Brooks RR, Robinson BH (1998) The potential use of hyperaccumulators and other plants for phytomining. In: Brooks RR (ed) Plants that hyperaccumulate heavy metals. CAB International, Wallingford, pp 327–356
Burton JD, Culkin F, Riley JP (1959) The abundance of gallium and germanium in terrestrial materials. Geochim Cosmochim Acta 16:151–180
Calvaruso C, Turpault M-P, Frey-Klett P (2006) Root-associated bacteria contribute to mineral weathering and to mineral nutrition in trees: a budgeting analysis. Appl Environ Microbiol 72:1258–1266
Canadell J, Jackson RB, Eheringer JR, Mooney HA, Sala OE, Schulze E-D (1996) Maximum rooting depth of vegetation types at the global scale. Oecologia 108:583–595
Chadwick OA, Derry LA, Vitousek PM, Huebert BJ, Hedin LO (1999) Changing sources of nutrients during four million years of ecosystem development. Nature 397:491–497
Chiba Y, Mitani N, Yamaji N, Ma JF (2009) HvLsi1 is a silicon influx transporter in barley. Plant J 57:810–818
Comerford NB (1998) Soil P bioavailability. In: Lynch JP, Deikman J (eds) Phosphorus in plant biology: regulatory roles in molecular, cellular, organismic, and ecosystem processes. American Society Plant Physiologists, Rockville, pp 136–147
Cornelis JT, Delvaux B, Cardinal D, André L, Ranger J, Opfergelt S (2010) Tracing mechanisms controlling the release of dissolved silicon in forest soil solutions using Si isotopes and Ge/Si ratios. Geochim Cosmochim Acta 74:3913–3924
DeArgollo R, Schilling J-G (1978) Ge-Si and Ga-Al fractionation in Hawaiian volcanic rocks. Geochim Cosmochim Acta 42:623–630
Delvigne C, Opfergelt S, Cardinal D, Delvaux B, André L (2009) Distinct silicon and germanium pathways in the soil-plant system: evidence from banana and horsetail. J Geophys Res 114:1–11
Delvigne C, Angeletti B, Guihou A, Basile-Doelsch I, Meunier J-D (2017) Reliable determination of Ge in solid environmental samples using a chemical preparation procedure developed for Si isotopes and ICP-MS analysis. Geostand Geoanal Res 42:139–149
Derry LA, Kurtz AC, Ziegler K, Chadwick OA (2005) Biological control of terrestrial silica cycling and export fluxes to watersheds. Nature 433:728–730
Deshmukh RK, Vivancos J, Guerin V, Sonah H, Labbe C, Belzile F et al (2013) Identification and functional characterization of silicon transporters in soybean using comparative genomics of major intrinsic proteins in Arabidopsis and rice. Plant Mol Biol 83:303–315
Ellenberg H, Leuschner C (2010) Vegetation Mitteleuropas mit den Alpen: in ökologischer, dynamischer und historischer Sicht. UTB, Stuttgart
Epstein E (1999) Silicon. Annu Rev Plant Physiol Plant Molec Biol 50:641–664
Eum CH, Choi WM (2013) Analysis of germanium in rock and sediment by ICP/MS after ammonium bifluoride (NH4HF2) digestion. JAST 26:375–380
European Commission (2014) Report on critical raw materials for the EU, Brussels
Froelich PN, Blanc V, Mortlock RA, Chillrud SN, Dunstan W, Udomkit A, Peng T-H (1992) River fluxes of dissolved silica to the ocean were higher during the glacials: Ge/Si in diatoms, rivers, and oceans. Paleoceanography 7:739–768
Froelich PN, Hambrick GA, Andreae MO, Mortlock RA, Edmond JM (1985) The geochemistry of inorganic germanium in natural waters. J Geophys Res 90:1133–1141
Gattullo CE, Allegretta I, Medici L, Fijan R, Pii Y, Cesco S, Mimmo T, Terzano R (2016) Silicon dynamics in the rhizosphere: connections with iron mobilization. J Plant Nutr Soil Sci 179:409–417
Goldschmidt VM (1958) Geochemistry. Oxford University Press
Grégoire C, Rémus-Borel W, Vivancos J, Labbé C, Belzile F, Bélanger RR (2012) Discovery of a multigene family of aquaporin silicon transporters in the primitive plant Equisetum arvense. Plant J 72:320–330
Gunn G (2014) Critical metals handbook, first edn. American Geophysical Union, Wiley
Halperin S, Barzilay A, Carson M, Roberts C, Lynch J (1995) Germanium accumulation and toxicity in barley. J Plant Nutr 18:1417–1426
Hara S, Hayashi N, Hirano S, Zhong XN, Yasuda S, Komae H (1990) Determination of germanium in some plants and animals. Z Naturforsch C 45:1250–1251
Heilmeier H, Wiche O, Tesch S, Aubel I, Schreiter N, Bertau M (2016) Germaniumgewinnung aus Biomasse – PhytoGerm. In: Thomé-Kozmiensky K, Goldmann D (eds.) Recycling und Rohstoffe 9, TK-Verlag Karl Thomé-Kozmiensky, Neuruppin, pp. 177–192
Hinsinger P, Barros ON, Benedetti MF, Noack Y, Callot G (2001) Plant-induced weathering of a basaltic rocks: experimental evidence. Geochim Cosmochim Acta 65:137–152
Hodson MJ, White PJ, Mead A, Broadley MR (2005) Phylogenetic variation in the silicon composition of plants. Ann Bot 96:1027–1046
Höll R, Kling M, Schroll R (2007) Metallogenesis of germanium—a review. Ore Geol Rev 30:145–180
Hu Z, Gao S (2008) Upper crustal abundances of trace elements: a revision and update. Chem Geol 253:205–221
Ingamells CO (1964) Rapid chemical analysis of silicate rocks. Talanta 11:65–66
Kabata-Pendias A (2011) Trace elements in soils and plants. CRC Press, Boca Raton
Kamh M, Horst WJ, Amer F, Mostafa H, Maier P (1999) Mobilization of soil and fertilizer phosphate by cover crops. Plant Soil 211:19–27
Kang J-Y, Park C-S, Ko S-R, In K, Lee D-Y, Yang D-C (2011) Characteristics of absorption and accumulation of inorganic germanium in Panax ginseng. J Ginseng Res 35:12–20
Klapcinska B, Chmielowski J (1986) Binding of germanium to Pseudomonas putida cells. Appl Environ Microbiol 51:1144–1147
Kostic L, Nikolic N, Bosnic D, Samardzic J, Nikolic M (2017) Silicon increases phosphorus (P) uptake by wheat under low P acid soil conditions. Plant Soil 419:447–455
Kumar S, Soukup M, Elbaum R (2017) Silicification in grasses: variation between different cell types. Front Plant Sci 8
Kurtz AC, Derry LA (2004) Tracing silicate weathering and terrestrial silica cycling with Ge/Si ratios. In: Wanty RB, Seal RR (eds) International symposium on water rock interaction, vol 11. Swets & Zeitlinger, Lisse, pp 833–837
Kurtz AC, Derry LA, Chadwick OA (2002) Germanium–silicon fractionation in the weathering environment. Geochim Cosmochim Acta 66:1525–1537
Kurtz AC, Lugolobi F, Salvucci G (2011) Germanium-silicon as a flow path tracer: application to the Rio Icacos watershed. Water Resour Res 47:W06516
Lambers H, Shane MW, Cramer MD, Pearse SJ, Veneklaas EJ (2006) Root structure and functioning for efficient acquisition of phosphorus: matching morphological and physiological traits. Ann Bot 98:693–713
Lambers H, Clements JC, Nelson MN (2013) How a phosphorus-acquisition strategy based on carboxylate exudation powers the success and agronomic potential of lupines (Lupinus, Fabaceae). Am J Bot 100:263–288
Lee S-T, Lee J-H, Choi Y-J, Lee S-D, Lee C-H, Heo J-S (2005a) Growth characteristics and germanium absorption of rice plant with different germanium concentrations in soil. Korean J Environ Agric 24:40–44
Lee S-T, Lee Y-H, Bahn K-N, Seo D-C, Heo J-S (2005b) Growth characteristics and germanium absorption in lettuce with different concentrations of germanium in soil. Korean J Environ Agric 24:404–408
Lugolobi F, Kurtz AC, Derry LA (2010) Germanium–silicon fractionation in a tropical, granitic weathering environment. Geochim Cosmochim Acta 74:1294–1308
Ma JF, Yamaji N (2006) Silicon uptake and accumulation in higher plants. Trends Plant Sci 11:392–397
Ma JF, Goto S, Tamai K, Ichii M (2001a) Role of root hairs and lateral roots in silicon uptake by rice. Plant Physiol 127:1773–1780
Ma JF, Miyake Y, Takahashi E (2001b) Silicon as beneficial element for crop plants. In: Datnoff LE, Snyder GH, Korndörfer GH (eds) Silicon in agriculture. Elsevier, Amsterdam, pp 17–34
Ma JF, Tamai K, Ichii M, Wu GF (2002) A rice mutant defective in Si uptake. Plant Physiol 130:2111–2117
Ma JF, Yamaji N, Tamai K, Mitani N (2007) Genotypic difference in silicon uptake and expression of silicon transporter genes in rice. Plant Physiol 145:919–924
Mahmudov KT, Aliyeva RA, Hamidov SZ, Chyragov FM, Mardanova SR, Kopylovich MN, Pombeiro AJL (2012) Preconcentration of germanium(iv) on styrene-maleic anhydride copolymer modified with aminobenzoic acids and its spectrophotometric determination with bis(2,3,4-trihydroxyphenylazo)benzidine. Am J Anal Chem 3:790–799
Manskaya SM, Kodina LA, Generalova VN, Kravtsova RP (1972) Interaction between germanium and lignin structures in the early stages of formation of coal. Geochem Int 9:385–394
Marschner H (1995) Mineral nutrition of higher plants. Academic Press, London
Martin F, Ildefonse P, Hazemann J-L, Petit S, Grauby O, Decarreau A (1996) Random distribution of Ge and Si in synthetic talc and EXAFS and FTIR study. Eur J Mineral 8:289–299
Matsumoto H, Takahashi E (1976) In vitro binding of germanium to proteins of rice shoots. Soil Sci Plant Nutr 22:191–197
McLaughlin MJ, Smolders E, Merckx R (1998) Soil–root interface: physicochemical processes. In: Huang PM, Adriano DC, Logan TJ, Checkai RT (eds) Soil chemistry and ecosystem health. Soil Science Society of America, Madison, pp 233–277
McMahon M, Regan F, Hughes H (2006) The determination of total germanium in real food samples including Chinese herbal remedies using graphite furnace atomic absorption spectroscopy. Food Chem 97:411–417
Mitani N, Chiba Y, Yamaji N, Ma JF (2009) Identification and characterization of maize and barley Lsi2-like silicon efflux transporters reveals a distinct silicon uptake system from that in rice. Plant Cell 21:2133–2142
Mitani N, Yamaji N, Ago Y, Iwasaki K, Ma JF (2011) Isolation and functional characterization of an influx silicon transporter in two pumpkin cultivars contrasting in silicon accumulation. Plant J 66:331–240
Montpetit J, Vivancos J, Mitani-Ueno N, Yamaji N, Rémus-Borel W, Belzile F, Ma JF, Bélanger RR (2012) Cloning, functional characterization and heterologous expression of TaLsi1, a wheat silicon transporter gene. Plant Mol Biol 79:35–46
Mortlock RA, Froelich PN (1987) Continental weathering of germanium: Ge/Si in the global river discharge. Geochem Cosmochem Acta 51:2075–2082
Mortlock RA, Froelich PN (1996) Determination of germanium by isotope dilution-hydride generation inductively coupled plasma mass spectrometry. Anal Chim Acta 332:277–284
Moskalyk RR (2004) Review of germanium processing worldwide. Miner Eng 17:393–402
Murnane RJ, Stallard RF (1990) Germanium and silicon in rivers of the Orinoco drainage basin. Nature 344:749–752
Négrel P, Ladenberger A, Reimann C, Birke M, Sadeghi M (2016) GEMAS: source, distribution patterns and geochemical behaviour of Ge in agricultural and grazing land soils at European continental scale. Appl Geochem 72:113–124
Nikolic M, Nikolic N, Liang Y, Kirkby EA, Römheld V (2007) Germanium-68 as an adequate tracer for silicon transport in plants. Characterization of silicon uptake in different crop species. Plant Physiol 143:495–503
Onishi H (1956) Notes on the geochemistry of germanium. Bull Chem Soc Jpn 23:686–694
Opfergelt S, Cardinal D, André L, Delvigne C, Bremond L, Delvaux B (2010) Variations of δ30Si and Ge/Si with weathering and biogenic input in tropical basaltic ash soils under monoculture. Geochim Cosmochim Acta 74:225–240
Parra S, Bravo MA, Quiroz W, Moreno T, Karanasiou A, Font O, Vidal V, Cereceda F (2014) Distribution of trace elements in particle size fractions for contaminated soils by a copper smelting from different zones of the Puchuncavi Valley (Chile). Chemosphere 111:513–521
Pillarisetty R (2011) Academic and industry research progress in germanium nanodevices. Nature 479:324–328
Pokrovski GS, Schott J (1998a) Thermodynamic properties of aqueous Ge(IV) hydroxide complexes from 25 to 350°C: implications for the behavior of germanium and the Ge/Si ratio in hydrothermal fluids. Geochim Cosmochim Acta 62:1631–1642
Pokrovski GS, Schott J (1998b) Experimental study of the complexation of silicon and germanium with aqueous organic species: implications for germanium and silicon transport and Ge/Si ratio in natural waters. Geochim Cosmochim Acta 6:3413–3428
Pokrovsky OS, Schott J (2002) Iron colloids/organic matter associated transport of major and trace elements in small boreal rivers and their estuaries (NW Russia). Chem Geol 190:141–179
Pokrovsky OS, Schott J, Kudryavtzev DI, Dupré B (2005) Basalt weathering in Central Siberia under permafrost conditions. Geochim Cosmochim Acta 69:5659–5680
Pokrovsky OS, Pokrovski GS, Schott J, Galy A (2006a) Experimental study of germanium adsorption on goethite and germanium coprecipitation with iron hydroxide: X-ray absorption fine structure and macroscopic characterization. Geochim Cosmochim Acta 70:3325–3341
Pokrovsky OS, Schott J, Dupré B (2006b) Trace element fractionation and transport in boreal rivers and soil porewaters of permafrost-dominated basaltic terrain in Central Siberia. Geochim Cosmochim Acta 70:3239–3260
Pontigo S, Ribera A, Gianfreda L, de la Luz Mora M, Nikolic M, Cartes P (2015) Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions. Planta 242:23–37
Prychid CJ, Rudall PJ, Gregory M (2003) Systematics and biology of silica bodies in monocotyledons. Bot Rev 69:377–440
Puerner NJ, Siegel SM, Siegel BZ (1990) The experimental phytotoxicity of germanium in relation to silicon. Water Air Soil Pollut 49:187–195
Rains DW, Epstein E, Zasoki RJ, Aslam M (2006) Active silicon uptake in wheat. Plant Soil 280:223–228
Raven JA (1983) The transport and function of silicon in plants. Biol Rev 58:179–207
Raven JA (2001) Silicon transport at the cell and tissue level. In: Datnoff LE, Snyder GH, Korndörfer GH (eds) Silicon in agriculture. Elsevier, Amsterdam, pp 17–34
Reimann C, Siewers U, Tarvainen T, Bityukova L, Eriksson J, Giucis A, Gregorauskiene V, Lukashev VK, Matinian NN, Pasieczna A (2003) Agricultural soils of northern Europe: a geochemical atlas. Schweizerbart, Stuttgart
Reimann C, Birke M, Demetriades A, Filzmoser P, O’Connor P (2014) Chemistry of Europe’s agricultural soils, part A. Methodology and interpretation of the GEMAS data set. Bundesanstalt für Geowissenschaften und Rohstoffe, Schweizerbart’sche Verlagsbuchhandlung, Hannover
Rosenberg E (2007) Environmental speciation of germanium. Ecol Chem Eng 14:707–732
Saal LB, Duckworth OW (2010) Synergistic dissolution of manganese oxides as promoted by siderophores and small organic acids. Soil Sci Soc Am J 74:2021–2031
Schreiter N, Aubel I, Bertau M (2016) Extraktive Gewinnung von Germanium aus pflanzlicher Biomasse. Chem Ing Tech 89:117–126
Scribner AM, Kurtz AC, Chadwick OA (2006) Germanium sequestration by soil: targeting the roles of secondary clays and Fe-oxyhydroxides. Earth Planet Sci Lett 243:760–770
Shacklette HT, Boerngen JG (1984) Element concentrations in soils and other surficial materials of the conterminous United States: U.S. Geol Surv Prof Pap 1270:105
Shan X-Q, Lian J, Wen B (2002) Effect of organic acids on adsorption and desorption of rare earth elements. Chemosphere 47:701–710
Sheoran V, Sheoran AS, Poonia P (2016) Factors affecting phytoextraction: a review. Pedosphere 26:14–166
Slawson RM, Van Dyke MI, Lee H, Trevors JT (1992) Germanium and silver resistance, accumulation, and toxicity in microorganisms. Plasmid 27:72–79
Soylak M, Yigit S (2015) Preconcentration–separation of germanium at ultra trace levels on polysulfone membrane filter and its determination by spectrophotometry. J Ind Eng Chem 24:322–325
Sparks JP, Chandra S, Derry LA, Parthasarathy MV, Daugherty CS, Griffin R (2010) Subcellular localization of silicon and germanium in grass root and leaf tissues by SIMS: evidence for differential and active transport. Biogeochemistry 104:237–249
Sun H, Guo J, Duan Y, Zhang T, Huo H, Gong H (2017) Isolation and functional characterization of CsLsi1, a silicon transporter gene in Cucumis sativus. Physiol Plant 159:201–214
Takahashi E, Matsumoto H, Syo S, Miyake Y (1976) Variation in Ge uptake among plant species. Jpn J Soil Sci Plant Nutr 74:217–221
Tang S, Zhou C, Jiang X, Zhao C (2000) Extraction separation of germanium with hydroxamic acid HGS98. J Cent S Univ Technol 7:40–42
Taylor SR (1964) Abundance of chemical elements in the continental crust: a new table. Geochim Cosmochim Acta 28:1273–1285
Tensho K, Yeh K-L (1972) Tracer study on preferential uptake of germanium by rice plant. Soil Sci Plant Nutr 18:173–178
Tyler G (2004) Rare earth elements in soil and plant systems—a review. Plant Soil 267:191–206
Tyler G, Olsson T (2001a) Concentrations of 60 elements in the soil solution as related to the soil acidity. Eur J Soil Sci 52:151–165
Tyler G, Olsson T (2001b) Plant uptake of major and minor mineral elements as influenced by soil acidity and liming. Plant Soil 230:307–321
Tyler G, Olsson T (2002) Conditions related to solubility of rare and minor elements in forest soils. J Plant Nutr Soil Sci 165:594–601
Veneklaas EJ, Stevens J, Cawthray GR, Turner S, Grigg AM, Lambers H (2003) Chickpea and white lupin rhizosphere carboxylates vary with soil properties and enhance phosphorus uptake. Plant Soil 248:187–197
Viers J, Dupré B, Polve M, Schott J, Dandurand J-L, Braun J-J (1997) Chemical weathering in the drainage basin of a tropical watershed (Nsimi-Zoetele site, Cameroon): comparison between organic poor and organic rich waters. Chem Geol 140:181–206
Vivancos J, Deshmukh R, Grégoire C, Rémus-Borel W, Belzile F, Bélanger RR (2016) Identification and characterization of silicon efflux transporters in horsetail (Equisetum arvense). J Plant Physiol 200:82–89
Wang Z, Shan X-Q, Zhang S (2001) Comparison of speciation and bioavailability of rare earth elements between wet rhizosphere soil and air-dried bulk soil. Anal Chim Acta 441:147–156
Wang X, Pearse SJ, Lambers H (2013) Cluster-root formation and carboxylate release in three Lupinus species as dependent on phosphorus supply, internal phosphorus concentration and relative growth rate. Ann Bot 112:1449–1459
Wardani SA (1957) On the geochemistry of germanium. Geochim Cosmochim Acta 13:5–l9
Wedepohl KH (1978) Handbook of geochemistry. Springer, Berlin
Wenzel WW (2009) Rhizosphere processes and management in plant-assisted bioremediation (phytoremediation) of soils. Plant Soil 321:385–408
White AF, Vivit DV, Schulz MS, Bullen TD, Evett RR, Aagarwal J (2012) Biogenic and pedogenic controls on Si distributions and cycling in grasslands of the Santa Cruz soil chronosequence, California. Geochim Cosmochim Acta 94:72–94
Wiche O, Heilmeier H (2016) Germanium (Ge) and rare earth element (REE) accumulation in selected energy crops cultivated on two different soils. Miner Eng 92:208–215
Wiche O, Kummer N-A, Heilmeier H (2016a) Interspecific root interactions between white lupin and barley enhance the uptake of rare earth elements (REEs) and nutrients in shoots of barley. Plant Soil 402:235–245
Wiche O, Székely B, Kummer N-A, Moschner C, Heilmeier H (2016b) Effects of intercropping of oat (Avena sativa L.) with white lupin (Lupinus albus L.) on the mobility of target elements for phytoremediation and phytomining in soil solution. Int J Phytoremediation 18:900–907
Wiche O, Tischler D, Fauser C, Lodemann J, Heilmeier H (2017a) Effects of citric acid and the siderophore desferrioxamine B (DFO-B) on the mobility of germanium and rare earth elements in soil and uptake in Phalaris arundinacea. Int J Phytoremediation 19:746–754
Wiche O, Zertani V, Hentschel W, Achtziger R, Midula P (2017b) Germanium and rare earth elements (REEs) in soils and soil grown plants in the area of Freiberg (Saxony, Germany). J Geochem Explor 175:120–129
Wyttenbach A, Schleppi P, Bucher J, Furrer V, Tobler L (1994) The accumulation of the rare-earth elements and of scandium in successive needle age classes of Norway spruce. Biol Trace Elem Res 41:13–29
Yang L, Zhang D (2002) Direct determination of germanium in botanical samples by graphite furnace atomic absorption spectrometry with palladium–zirconium as chemical modifier. Talanta 56:1123–1129
Yang T, Zhu Z, Gao Q, Rao Z, Han J, Wu Y (2010) Trace element geochemistry in topsoil from East China. Environ Earth Sci 60:623–631
Acknowledgements
Numerous students were involved in the experiments. The authors are indebted for their activity. We are grateful to the reviewers and Mandy Hoyer for many helpful comments on the manuscript. BS contributed as an Alexander-von-Humboldt research fellow.
Funding
These studies have been carried out in the framework of the PhytoGerm project financed by the Federal Ministry of Education and Research, Germany (grant number 033R091A).
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Responsible editor: Roberto Terzano
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Wiche, O., Székely, B., Moschner, C. et al. Germanium in the soil-plant system—a review. Environ Sci Pollut Res 25, 31938–31956 (2018). https://doi.org/10.1007/s11356-018-3172-y
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DOI: https://doi.org/10.1007/s11356-018-3172-y
Keywords
- Availability
- Trace element analysis
- Soil fractions
- Rhizosphere
- Biogeochemistry