Effect of Mercury on Growth and Gravireaction of Maize Roots

Pilet, Paul‐Emile; Versel, Jean-Marc

doi:10.1016/s0044-328x(81)80112-2

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Hg^+ rather tightly binds to SH-groups (Passow et al 1961, Rothstein 1970 and thus can affect living organisms. Hg-compounds including HgClj are taken up into cells and inhibit metabolism and growth (Beauford et al 1977, de Filippis and Pallaghy 1976a, b, c, de Filippis et al 1981, Passow et al 1961, Pilet and Versel 1981, Rothstein 1970, Shieh and Barber 1973. Thtis Hg-compounds have been studied both with respect to ecotoxicology and as tools in physiological investigations.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂

Golle

Lüttge

1983

Physiologia Plantarum

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The electrical resting potential across the plasmalemma of Lemna gibba L. (G 1) cells is −230 to −250 mV and the diffusion potential in the presence of 1 mol m−3 KCN + 1 mol m−3 salicylhydroxamic acid is about −100 mV. A concentration of 0.01 mol m−3 HgCl2 depolarises the transmembrane electrical potential in a largely reversible way. When the cells after 16 min of HgCl2‐application are returned to Hg‐free solution, the transmembrane electrical potential is only depolarised by 24 × 13 mV (SD, n = 13) compared with the potential prior to HgCl2 treatment. In contrast, a 16 min pretreatment with HgCl2 followed by a wash with mercury‐free solution reduces the transient depolarisations of transmembrane potential observed after addition of 5 mol m−3 D‐glncose or 1 mol m−3 L‐alaoine to about 60% of controls. These transient depolarisations are due to the onset of solute uptake. Accordingly, HgCl2‐pretreatment inhibits uptake of 14C‐3‐O‐methyl‐d‐glucose by more than 50% and uptake of 14C‐l‐alanine by more than 70%. Washing with 1 mol m−3 1,4‐dithiothreitol does not reverse this inhibition. It is, therefore, concluded that Hg2+ irreversibly binds to essential SH‐groups of the H+‐hexose and the H+‐amino‐acid cotransport carriers of Lemna gibba and inhibits these carriers without appreciably affecting the electrogenic proton‐extrusion pump.

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Section: Introductionmentioning

confidence: 99%

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂

Golle

Lüttge

1983

Physiologia Plantarum

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Mercury toxicity in plants

2000

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Physiological and metabolic effect of mercury accumulation in higher plants system

Sengar

Gautam

Sengar

et al. 2010

Toxicological & Environmental Chemistry

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Effect of Mercury on Growth and Gravireaction of Maize Roots

Cited by 3 publications

References 22 publications

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂

Mercury toxicity in plants

Physiological and metabolic effect of mercury accumulation in higher plants system

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Effect of Mercury on Growth and Gravireaction of Maize Roots

Cited by 3 publications

References 22 publications

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl2

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl2

Mercury toxicity in plants

Physiological and metabolic effect of mercury accumulation in higher plants system

Contact Info

Product

Resources

About

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂

Inhibition of the glucose and amino‐acid carriers of Lemna gibba by pretreatment with HgCl₂