Formation of volatile iodinated alkanes in soil: results from laboratory studies

Keppler, Frank; Borchers, R.; Elsner, Petteri; Fahimi, Isabelle; Pracht, Jens; Schöler, H. F.

doi:10.1016/s0045-6535(03)00198-x

Cited by 36 publications

(39 citation statements)

References 21 publications

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“…The likely mechanisms for iodocarbon production in the aggregate incubations are alkylation of inorganic iodine (Urhahn and Ballschmiter 1998) or the breakdown of higher molecular mass organohalogens (Fenical 1982). Formation of monoiodinated organics has been observed via various pathways, including those involving alkylating enzymes or agents such as methylcobalamin (Manley 1994) and an abiotic reaction induced by the oxidation of organic matter by Fe 3+ (Keppler et al 2003). As in natural detrital particles (Simon et al 2002), the aggregates incubated here are characterized by high rates of bacterial heterotrophic production (up to 386 mg C L 21 d 21 ) compared with the surrounding seawater (,13 mg C L 21 d 21 ).…”

Section: Discussionmentioning

confidence: 99%

The production of volatile iodocarbons by biogenic marine aggregates

Hughes

Malin

Turley

et al. 2008

Limnology & Oceanography

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We present the first reported measurements of volatile iodocarbon production by biogenic marine aggregates. Iodomethane (CH3I), iodoethane (C2H5I), 2‐iodopropane (CH3CHICH3), and 1‐iodopropane (CH3CH2CH2I) concentrations were determined in incubations of aggregates formed by concentrating the >53 µm fraction of the plankton during a field campaign in the Celtic Sea. All four iodocarbons increased significantly in concentration in the aggregate incubations relative to filtered seawater controls. Maximum production rates ranged from 0.01 pmol L−1 h−1 for CH3CHICH3 to 0.31 pmol L−1 h−1 for C2H5I. Accompanying pheopigment and bacterial heterotrophic production suggest that the processes taking place on the aggregates studied were a good representation of those known to occur on natural marine particles. We also report iodocarbon production rates observed in natural marine aggregates, including a diatom mucilage collected in the Celtic Sea and phytodetritus sampled from Kongsfjord in the Arctic. Detrital particles could be hotspots of iodocarbon production in the marine environment.

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Section: Discussionmentioning

confidence: 99%

The production of volatile iodocarbons by biogenic marine aggregates

Hughes

Malin

Turley

et al. 2008

Limnology & Oceanography

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“…Volatile iodine compounds (as organoiodides) can be released from terrestrial environments, such as rice fields (Redeker et al 2000), peat bogs (Dimmer et al 2001). The production of volatile organoiodides from soil is thought to be ultimately dependent on the amounts of iodide in soils (Keppler et al 2000(Keppler et al , 2003.…”

Section: Discussionmentioning

confidence: 99%

Availability of iodide and iodate to spinach (Spinacia oleracea L.) in relation to total iodine in soil solution

et al. 2006

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A greenhouse pot experiment was carried out to investigate the availability of iodide and iodate to soil-grown spinach (Spinacia oleracea L.) in relation to total iodine concentration in soil solution. Four iodine concentrations (0, 0.5, 1, 2 mg kg -1 ) for iodide (I -) and iodate (IO 3 -) were used. Results showed that the biomass productions of spinach were not significantly affected by the addition of iodate and iodide to the soil, and that iodine concentrations in spinach plants on the basis of fresh weights increased with increasing addition of iodine. Iodine concentrations in tissues were much greater for plants grown with iodate than with iodide. In contrast to the iodide treatments, in iodate treatment leaves accounted for a larger fraction of the total plant iodine. The soil-to-leaf transfer factors (TF leaf ) for plants grown with iodate were about tenfold higher than those grown with iodide. Iodine concentrations in soil solution increased with increasing iodine additions to the soil irrespective of iodine species. However, total iodine in soil solution was generally higher for iodate treatments than iodide both in pots with and without spinach. According to these results, iodate can be considered as potential iodine fertilizer to increase iodine content in vegetables.

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“…Se atribuyen en parte a la sustancial volatilización del yodo del sistema planta-suelo hacia la atmósfera mediada por diferentes microorganismos (Muramatsu et al, 1995;Fuge, 1996). Sin embargo, se tiene evidencia que la síntesis de las formas volátiles de yodo, llamadas organoyodados, provienen principalmente de la forma química yoduro (Keppler et al, 2003) este hecho pudiera crops (Yuita, 1992) normally grown in field. In the soil can coexist various chemical forms of iodine, among the most abundant are iodate (IO 3 ) and iodide (I -) (Borst Pauwels, 1962).…”

Section: Fertilization With Iodine For Crop Biofortification In Soilunclassified

“…They are attributed in part to the substantial volatilization of Iodine from the plant-soil system to the atmosphere mediated by different microorganisms (Muramatsu et al, 1995;Fuge, 1996). However, there is evidence that the synthesis of volatile forms of iodine, called organoiodine, mainly from the chemical form iodide (Keppler et al, 2003) this fact might seem contradictory since iodide is the chemical form that plants absorb more easily from the soil. Iodine content in irrigation water can be a source of this element for plants; however it is unlikely that water contains adequate levels of iodine in regions where the soil has low concentrations of the element.…”

Section: Fertilization With Iodine For Crop Biofortification In Soilmentioning

confidence: 99%

Biofortificación con yodo en plantas para consumo humano

Leija-Martínez

Benavides-Mendoza

Rocha-Estrada

et al. 2017

Remexca

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ResumenEn el presente trabajo se describe la problemática de salud debido al consumo insuficiente del yodo, así como las alternativas que han sido empleadas para mitigar este problema global, tanto las tradicionales como la yodatización de sal de mesa hasta las nuevas tendencias de biofortificación con yodo en las principales plantas de consumo humano. Se incluyen los mecanismos de absorción, volatilización y transporte del yodo en las plantas, distinguiendo entre especies marinas y terrestres. Se mencionan asimismo los resultados obtenidos en algunos estudios de biofortificación, citando las diferentes formas de aplicación y las diferencias obtenidas entre los sistemas de cultivo en suelo y sin suelo.Palabras clave: absorción de yodo, desorden por deficiencia de yodo, fortificación con yodo, haloperoxidasas, yodatización. IntroducciónEl consumo insuficiente de los micronutrientes través de los alimentos causa una malnutrición mineral en humanos. Hasta ahora se han determinado 11 elementos traza que son AbstractThis paper describe health problems due to insufficient iodine intake, thus the alternatives that have been used to alleviate this global problem, both traditional and iodization of table salt to new trends of iodine biofortification in the main plants for human consumption. The mechanisms of absorption, volatilization and transport of iodine in plants, distinguishing between marine and terrestrial species are included. The results of some biofortification studies are also mentioned, citing the different forms of application and the differences obtained between cropping systems in soil and soilless.

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Formation of volatile iodinated alkanes in soil: results from laboratory studies

Cited by 36 publications

References 21 publications

The production of volatile iodocarbons by biogenic marine aggregates

The production of volatile iodocarbons by biogenic marine aggregates

Availability of iodide and iodate to spinach (Spinacia oleracea L.) in relation to total iodine in soil solution

Biofortificación con yodo en plantas para consumo humano

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