The effect of fertilizer applications on 137Cs uptake by different plant species and vegetation types

Belli, M.; Sansone, U.; Ardiani, R.; Feoli, Enrico; Scimone, M.; Menegon, S.; Parente, G.

doi:10.1016/0265-931x(94)00038-x

Cited by 32 publications

(14 citation statements)

References 6 publications

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“…Thus, one mechanism whereby increasing rhizosphere K protects plants from Cs in the environment is by reducing their Cs uptake. This observation is consistent with previous studies showing that increasing rhizosphere K reduces Cs uptake (Sutcliffe, 1957;Bange and Overstreet, 1960;Handley and Overstreet, 1961) and accumulation (Menzel, 1954;Cline and Hungate, 1960;Nishita et al, 1960Nishita et al, , 1962Jackson et al, 1965;Jackson and Nisbet, 1990;Shaw and Bell, 1991;Shaw et al, 1992;Belli et al, 1995;Smolders et al, 1996aSmolders et al, , 1996bZhu et al, 1999) by plants and provides a rationale for using K fertilization as a countermeasure in radiocesiumcontaminated soils (Konoplev et al, 1993;Prister et al, 1993;Zhu et al, 2000;. It was also observed that increasing [K] agar in the presence of Cs also increased [K] shoot (Fig.…”

supporting

confidence: 92%

Cesium Toxicity in Arabidopsis

et al. 2004

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Cesium (Cs) is chemically similar to potassium (K). However, although K is an essential element, Cs is toxic to plants. Two contrasting hypotheses to explain Cs toxicity have been proposed: (1) extracellular Cs+ prevents K+ uptake and, thereby, induces K starvation; and (2) intracellular Cs+ interacts with vital K+-binding sites in proteins, either competitively or noncompetitively, impairing their activities. We tested these hypotheses with Arabidopsis (Arabidopsis thaliana). Increasing the Cs concentration in the agar ([Cs]agar) on which Arabidopsis were grown reduced shoot growth. Increasing the K concentration in the agar ([K]agar) increased the [Cs]agar at which Cs toxicity was observed. However, although increasing [Cs]agar reduced shoot K concentration ([K]shoot), the decrease in shoot growth appeared unrelated to [K]shoot per se. Furthermore, the changes in gene expression in Cs-intoxicated plants differed from those of K-starved plants, suggesting that Cs intoxication was not perceived genetically solely as K starvation. In addition to reducing [K]shoot, increasing [Cs]agar also increased shoot Cs concentration ([Cs]shoot), but shoot growth appeared unrelated to [Cs]shoot per se. The relationship between shoot growth and [Cs]shoot/[K]shoot suggested that, at a nontoxic [Cs]shoot, growth was determined by [K]shoot but that the growth of Cs-intoxicated plants was related to the [Cs]shoot/[K]shoot quotient. This is consistent with Cs intoxication resulting from competition between K+ and Cs+ for K+-binding sites on essential proteins.

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supporting

confidence: 92%

Cesium Toxicity in Arabidopsis

et al. 2004

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“…However, an increase in the concentration of potassium in the nutrient solution beyond around 250 µM was found to result in only a marginal improvement in its inhibitory effect on plant uptake of radiocaesium [5]. Microcosmic soil experiments have also indicated that an increase in exchangeable potassium levels in soil can reduce the uptake of radiocaesium by spring wheat [8] and lettuce [9], although the inhibitory effect of potassium was marginal under some circumstances [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of potassium (K) supply on the uptake of 137 Cs by spring wheat ( Triticum aestivum cv. Tonic): a lysimeter study

Zhu

Shaw

Nisbet³

et al. 2000

Radiation and Environmental Biophysics

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A lysimeter experiment was carried out on a relatively infertile soil to examine the effect of potassium fertiliser application on the uptake of radiocaesium by spring wheat. Porous ceramic cups were used to obtain samples of soil solution. Results showed that the uptake of radiocaesium by spring wheat was reduced by the addition of potassium. However this inhibitory effect was less marked at later stages of plant growth due to factors such as the spatial variability of potassium within the soil, differences in root distribution down the soil profile and age-related demand for potassium by the plant. There was some evidence that a negative power function could be used to describe the relationship between the concentration of 137Cs in the plant and concentrations of potassium or 137Cs:K quotients in soil solution over the whole experimental period. Practical implications of potassium fertilisation in terms of reducing uptake of radiocaesium by crops are discussed.

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“…Grauby et al (1990) recommended that ammonium fertilizers not be used in the event of a nuclear accident. On the other hand, according to Schechtner and Henrich (1990) and Belli et al (1995), ammonium or urea fertilization did not increase the radiocaesium concentration in plants, which was attributed to the diluting effect of the growth of plant biomass on the radiocaesium concentration.…”

Section: Vol 11 (2002): 143-152mentioning

confidence: 94%

“…The radiocaesium concentration in white clover has been reported to be higher than that in lucerne Dekker 1968, Schechtner andHenrich 1990); here, however, this was not always the case. Belli et al (1995) reported that the 137 Cs concentration in grass (Phleum pratense) was higher than that of a legume (Lotus corniculatus). Their results corroborate the findings of our study at the early growth stage, when 134 Cs uptake by ryegrass was clearly higher than that by legumes.…”

Section: Vol 11 (2002): 143-152mentioning

confidence: 99%

“…Ammonium and potassium salts are known to be the fertilizers most effective in influencing plant uptake of radiocaesium. Potassium decreases and ammonium, in contrast to potassium, usually enhances caesium uptake (Evans and Dekker 1969, Haak and Eriksson 1973, Cawse 1990, Belli et al 1995. It was hypothesized that the rate of ammonium fertilizer might play an important role in counteracting the ability of biotite to reduce radiocaesium uptake by plants.…”

Section: Introductionmentioning

confidence: 99%

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Harvesting strategy and N fertilization influence 134 Cs uptake by forage plants

Paasikallio¹,

Sormunen-Cristian²

2002

AFSci

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The root uptake of 134 Cs by forage plants was studied as a function of growth stage and N fertilization with biotite supplementation. The study was conducted by means of pot experiments with peat soil. In the growth stage studies, ryegrass, white clover and yellow-flowered lucerne were cut once 30, 60 or 90 days after sowing or three times at intervals of 30 days. In the one-cut system, at 90 d, the activity concentration of 134 Cs in ryegrass and clover was higher and that in lucerne lower than in the three-cut system. In both treatments, the activity concentration in ryegrass decreased and that in legumes, generally, tended to increase with time. In the N fertilization studies, ryegrass was grown at different levels of ammonium nitrate (100, 200 and 400 mg N l -1 ) and biotite (0, 10, 20 and 40 g l -1 ) application. The addition of N to soil increased and that of biotite decreased the 134 Cs activity concentration in ryegrass.The differences in forage 134 Cs between the two harvesting systems were small. Although ammonium nitrate increased the 134 Cs uptake by ryegrass, in the event of fallout, moderate rates of ammonium fertilizer could be used provided that biotite or K are applied at adequate levels.

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The effect of fertilizer applications on 137Cs uptake by different plant species and vegetation types

Cited by 32 publications

References 6 publications

Cesium Toxicity in Arabidopsis

Cesium Toxicity in Arabidopsis

Effect of potassium (K) supply on the uptake of 137 Cs by spring wheat ( Triticum aestivum cv. Tonic): a lysimeter study

Harvesting strategy and N fertilization influence 134 Cs uptake by forage plants

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