2004
DOI: 10.1007/s00425-004-1379-2
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La3+ uptake and its effect on the cytoskeleton in root protoplasts of Zea mays L.

Abstract: La(3+) ions are known to antagonize Ca(2+) and are used as a Ca(2+) channel blocker but little is known on the direct effects of La(3+). Micromolar La(3+) concentrations promoted root growth while higher concentrations were inhibitory. The uptake of La(3+) in maize root protoplasts revealed a membrane binding component (0.14 and 0.44 pmol min(-1) protoplast(-1) for 100 and 1,000 microM La(3+)) followed by a slower concentration and time-dependent uptake. Uptake was reduced by Ca(2+), but had no substantial eff… Show more

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Cited by 46 publications
(26 citation statements)
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“…Lanthanoids, especially La, have been used for decades as a membraneimpermeable calcium antagonist to monitor the movement of calcium and to investigate the role of calcium in different animal and plant tissues. (Liu and Hasenstein 2005). Many advances in the investigation of physiological and biochemical effects of lanthanoids on plant growth and development have been made since the 1970s (Hu et al 2004), showing that lanthanoids have root growth promoting effects with plants, such as corn, maize, mungbean, Arabidopsis thaliana, Phaseolus radiatus and Brassica pekinensis (Velasco et al 1979;Diatloff et al 1995a, b;He and Loh 2000;Liu and Hasenstein 2005).…”
Section: Resultsmentioning
confidence: 97%
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“…Lanthanoids, especially La, have been used for decades as a membraneimpermeable calcium antagonist to monitor the movement of calcium and to investigate the role of calcium in different animal and plant tissues. (Liu and Hasenstein 2005). Many advances in the investigation of physiological and biochemical effects of lanthanoids on plant growth and development have been made since the 1970s (Hu et al 2004), showing that lanthanoids have root growth promoting effects with plants, such as corn, maize, mungbean, Arabidopsis thaliana, Phaseolus radiatus and Brassica pekinensis (Velasco et al 1979;Diatloff et al 1995a, b;He and Loh 2000;Liu and Hasenstein 2005).…”
Section: Resultsmentioning
confidence: 97%
“…(Liu and Hasenstein 2005). Many advances in the investigation of physiological and biochemical effects of lanthanoids on plant growth and development have been made since the 1970s (Hu et al 2004), showing that lanthanoids have root growth promoting effects with plants, such as corn, maize, mungbean, Arabidopsis thaliana, Phaseolus radiatus and Brassica pekinensis (Velasco et al 1979;Diatloff et al 1995a, b;He and Loh 2000;Liu and Hasenstein 2005). Therefore, three lanthanoids (La, Ce and Nd) that are often used to improve plant growth were selected to stimulate rooting of micropropagated shoots of D. densiflorum.…”
Section: Resultsmentioning
confidence: 97%
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“…Yet, a further increase in La concentration led to the appearance of abnormalities such as c-metaphases, indicating La toxicity [102]. Moreover, there are studies demonstrating that REE may cause destabilization of the cytoskeleton, affecting the cell cycle [137].…”
Section: Chromosomes-cell Cyclementioning
confidence: 99%
“…The distinction of La 3+ from other Ca 2+ channel blockers, nifedipine and verapamil, was also demonstrated on Na + Xuxes through nonselective cation channels in the plasma membrane of Arabidopsis roots (Demidchik and Tester 2002). In root protoplasts of corn, La 3+ was taken up and had eVects on the cytoskeleton which is beyond its role as a Ca 2+ antagonist (Liu and Hasenstein 2005). In rice, induction of Em by La 3+ was dependent on the presence of ABA (Rock and Quatrano 1996).…”
Section: Percent Of Dry Weightmentioning
confidence: 94%