Aluminium toxicity targets PIN2 in Arabidopsis root apices: Effects on PIN2 endocytosis, vesicular recycling, and polar auxin transport

Shen, Hong; Hou, NingYan; Schlicht, Markus; Wan, Yinglang; Mancuso, Stefano; Baluška, Frantǐsek

doi:10.1007/s11434-008-0332-3

Cited by 69 publications

(66 citation statements)

References 35 publications

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“…8 The observed Cu-mediated auxin redistribution responsible for the inhibition of primary root elongation is mediated by PIN1, but not PIN2 or AUX1, different from Al-modulated auxin transport. 10,12,29 …”

Section: Disclosure Of Potential Conflicts Of Interestmentioning

confidence: 99%

“…18 For example, Al alters both auxin accumulation and distribution in plants under Al stress. 12,[27][28][29] These changes are mediated by Al-inhibited auxin transport form distal transition zone to elongation zone of the maize primary root, resulting in an arrest of root elongation. 27 Further studies demonstrate that the alteration of auxin transport for Al-induced auxin redistribution is modulated by auxin carriers AUX1 and PIN2.…”

Section: Auxin Signaling In Metal Stress Responsementioning

confidence: 99%

“…27 Further studies demonstrate that the alteration of auxin transport for Al-induced auxin redistribution is modulated by auxin carriers AUX1 and PIN2. 12,29 In addition, the ethylene production leading to auxin redistribution is also evidenced in Al-mediated inhibition…”

Section: Auxin Signaling In Metal Stress Responsementioning

confidence: 99%

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Section: Disclosure Of Potential Conflicts Of Interestmentioning

confidence: 99%

Section: Auxin Signaling In Metal Stress Responsementioning

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“…40 Using plasma membrane vesicles isolated from roots grown in the presence or absence of Al, soybean. 41 and broad bean. 30 roots exhibited an increased plasma membrane H C -ATPase activity that was correlated with changes in the corresponding protein expression.…”

mentioning

confidence: 99%

“…41 Phosphorylation at the penultimate Thr residue of the plasma membrane H C -ATPase is a common example of post-translational modification altering the activity of this enzyme. 42 The association of 14-3-3 proteins with the phosphothreonine-containing sequence of the plasma membrane H C -ATPase maintains the phosphorylation state and results in its activation.…”

mentioning

confidence: 99%

Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

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et al. 2016

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Rhizotoxic effects of silver in cowpea seedlings

Blamey

Kopittke

Wehr

et al. 2010

Enviro Toxic and Chemistry

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Silver (Ag) is highly toxic to aquatic organisms, including algae, invertebrate animals, and fish, but little information exists on Ag rhizotoxicity in higher plants. In two solution culture experiments with approximately 1,000 microM Ca(NO3)2 and 5 microM H3BO3 (pH 5.4), 20 to 80% of added Ag (< or =2 microM) was lost from solution within approximately 30 min, with a further decrease after 48 h root growth. Using measured Ag concentrations at the start of the experiments, the median effective concentration (EC50) for root elongation rate of cowpea (Vigna unguiculata [L.] Walp. cv. Caloona) was 0.010 microM Ag in the first 4 h of exposure (0.021 microM in the first 8 h). This demonstrates that Ag (as Ag+) is rapidly rhizotoxic to cowpea seedlings at concentrations similar to those that are toxic to freshwater biota. Rupturing of rhizodermal and outer cortical layers was evident after 48 h with 0.13 to 0.57 microM Ag initially in solution, being most severe at 0.13 or 0.25 microM Ag. An additional experiment showed that ruptures were first evident after 20 h exposure to 0.17 microM Ag, with increased severity of rupturing over time. The rhizotoxic effects of Ag are similar to those of some other trace metals (e.g., Cu, Al, La) that bind strongly to hard ligands and weakly to soft ligands. The similarity of rupturing effects, despite the difference in strong binding to soft ligands by Ag and to hard ligands by the other metals, suggests a distinctive metabolic effect of Ag that binds only weakly to hard ligands.

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Aluminium toxicity targets PIN2 in Arabidopsis root apices: Effects on PIN2 endocytosis, vesicular recycling, and polar auxin transport

Cited by 69 publications

References 35 publications

Role of ROS and auxin in plant response to metal-mediated stress

Role of ROS and auxin in plant response to metal-mediated stress

Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

Rhizotoxic effects of silver in cowpea seedlings

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Aluminium toxicity targets PIN2 in Arabidopsis root apices: Effects on PIN2 endocytosis, vesicular recycling, and polar auxin transport

Cited by 69 publications

References 35 publications

Role of ROS and auxin in plant response to metal-mediated stress

Role of ROS and auxin in plant response to metal-mediated stress

Role of the plasma membrane H+-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

Rhizotoxic effects of silver in cowpea seedlings

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Product

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Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency