Aluminum Toxicity in Plants: Present and Future

Hajiboland, Roghieh; Panda, Chetan K.; Lastochkina, Oksana; Gavassi, Marina Alves; Habermann, Gustavo; Pereira, Jorge Fernando

doi:10.1007/s00344-022-10866-0

Cited by 24 publications

(26 citation statements)

References 360 publications

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“…It is known that Al 3+ ions have a high affinity for pectic molecules of the cell wall and this binding is considered a major cause of Al 3+ toxicity (Horst et al, 2010). Furthermore, within a few minutes Al 3+ inhibits wall loosening in the elongation zone (Hajiboland et al, 2023). The Al 3+ ions unbound to malate molecules in the CW then bind to negatively‐charged pectins, leading to an increase of stiffness though without REA occurrence (Figure 4).…”

Section: Discussionmentioning

confidence: 99%

Correlation between plant cell wall stiffening and root extension arrest phenotype in the combined abiotic stress of Fe and Al

Kaur,

Teulon,

Godon

et al. 2023

Plant Cell & Environment

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The plasticity and growth of plant cell walls (CWs) remain poorly understood at the molecular level. In this work, we used atomic force microscopy (AFM) to observe elastic responses of the root transition zone of 4‐day‐old Arabidopsis thaliana wild‐type and almt1‐mutant seedlings grown under Fe or Al stresses. Elastic parameters were deduced from force‐distance curve measurements using the trimechanic‐3PCS framework. The presence of single metal species Fe2+ or Al3+ at 10 µM exerts no noticeable effect on the root growth compared with the control conditions. On the contrary, a mix of both the metal ions produced a strong root‐extension arrest concomitant with significant increase of CW stiffness. Raising the concentration of either Fe2+ or Al3+ to 20 µM, no root‐extension arrest was observed; nevertheless, an increase in root stiffness occurred. In the presence of both the metal ions at 10 µM, root‐extension arrest was not observed in the almt1 mutant, which substantially abolishes the ability to exude malate. Our results indicate that the combination of Fe2+ and Al3+ with exuded malate is crucial for both CW stiffening and root‐extension arrest. However, stiffness increase induced by single Fe2+ or Al3+ is not sufficient for arresting root growth in our experimental conditions.

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Section: Discussionmentioning

confidence: 99%

Correlation between plant cell wall stiffening and root extension arrest phenotype in the combined abiotic stress of Fe and Al

Kaur,

Teulon,

Godon

et al. 2023

Plant Cell & Environment

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“…Interestingly, the experimental design alternated P and Al treatments to avoid Al‐P complex precipitation in hydroponic media, but the enhanced Al‐resistance was still more strongly associated with P‐efficiency than with organic acid exudation (Sun et al., 2008). This indicates that plant P nutrition is tied to Al resistance via internal mechanisms and not simply due to chemical conditions of the media (Hajiboland et al., 2022). This is supported by evidence of Al‐P complex transportation to vacuoles in Al‐tolerant maize (Vazquez et al., 1999) and by Al‐P coprecipitation in root cell wall of Al‐tolerant buckwheat (Zheng et al., 2005).…”

Section: Interplay Between Pi and Aluminum Homeostasis Regulates Root...mentioning

confidence: 99%

“…Additionally, a main cause for Al 3+ toxicity is its direct binding to the pectic matrix and hemicellulose (Hajiboland et al., 2022; Horst et al., 2010). PECTIN METHYLESTERASE (PME) catalyzes the demethylesterification of pectin in the cell wall, exposing carboxylic groups to Al 3+ binding.…”

Section: Interplay Between Pi and Aluminum Homeostasis Regulates Root...mentioning

confidence: 99%

“…PECTIN METHYLESTERASE (PME) catalyzes the demethylesterification of pectin in the cell wall, exposing carboxylic groups to Al 3+ binding. PME expression and activity are associated with Al accumulation in the roots and Al‐sensitivity (Hajiboland et al., 2022). Al binding to cell wall hemicellulose occurs at the predominant component of xyloglucan (Cosgrove, 2005; Hajiboland et al., 2022).…”

Section: Interplay Between Pi and Aluminum Homeostasis Regulates Root...mentioning

confidence: 99%

“…PME expression and activity are associated with Al accumulation in the roots and Al‐sensitivity (Hajiboland et al., 2022). Al binding to cell wall hemicellulose occurs at the predominant component of xyloglucan (Cosgrove, 2005; Hajiboland et al., 2022). Al‐sensitivity has also been tied to free hydroxyl groups.…”

Section: Interplay Between Pi and Aluminum Homeostasis Regulates Root...mentioning

confidence: 99%

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Recent advances in unraveling the mystery of combined nutrient stress in plants

DeLoose,

Clúa,

Cho

et al. 2023

The Plant Journal

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SUMMARYEfficiently regulating growth to adapt to varying resource availability is crucial for organisms, including plants. In particular, the acquisition of essential nutrients is vital for plant development, as a shortage of just one nutrient can significantly decrease crop yield. However, plants constantly experience fluctuations in the presence of multiple essential mineral nutrients, leading to combined nutrient stress conditions. Unfortunately, our understanding of how plants perceive and respond to these multiple stresses remains limited. Unlocking this mystery could provide valuable insights and help enhance plant nutrition strategies. This review focuses specifically on the regulation of phosphorous homeostasis in plants, with a primary emphasis on recent studies that have shed light on the intricate interactions between phosphorous and other essential elements, such as nitrogen, iron, and zinc, as well as non‐essential elements like aluminum and sodium. By summarizing and consolidating these findings, this review aims to contribute to a better understanding of how plants respond to and cope with combined nutrient stress.

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Effectiveness of wood ash and paper sludge as liming and nutrient sources for annual ryegrass grown in podzolic soils of Newfoundland

Javed,

Katanda,

Nadeem

et al. 2024

Soil Science Soc of Amer J

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The acidic soils of western Newfoundland require liming for successful production of most crops. Locally sourced paper mill waste wood ash (WA) and paper sludge (SL) have potential as cheaper alternatives to limestone (LIME). Two greenhouse experiments evaluated WA and SL as liming and soil conditioning amendments for annual ryegrass (Lolium multiflorum) production. At 55 days after seeding, soil pH in WA (6.2 and 6.3) and wood ash and paper sludge (WASL) (6.0 and 6.3) were not different from that in LIME (6.0 and 6.5) for Experiments 1 and 2, respectively. However, pH in SL was 0.4 and 0.3 points lower than in LIME. Compared to LIME, WA, SL, and WASL produced 31%–52% and 57%–74% greater biomass yield in Experiments 1 and 2, respectively. N uptake was greater in WA (60 and 129 kg N ha−1) and WASL (51 and 97 kg N ha−1) compared to LIME (40 and 85 kg N ha−1), in Experiments 1 and 2, respectively. SL did not differ from LIME in Experiment 1, but reduced N uptake by 57% in Experiment 2. The results show significant potential of WA as an alternative amendment for liming and yield improvement of annual ryegrass grown in NL podzolic soils. However, SL has limited potential due to the risk of increasing N immobilization and residual soil mineral N when growing conditions are limiting. Combining SL with WA or biochar seemed to alleviate these risks. Overall, the adoption of these amendments for field production systems warrants serious consideration, following supplemental field studies to determine optimal application rates and timing.

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Aluminum Toxicity in Plants: Present and Future

Cited by 24 publications

References 360 publications

Correlation between plant cell wall stiffening and root extension arrest phenotype in the combined abiotic stress of Fe and Al

Correlation between plant cell wall stiffening and root extension arrest phenotype in the combined abiotic stress of Fe and Al

Recent advances in unraveling the mystery of combined nutrient stress in plants

Effectiveness of wood ash and paper sludge as liming and nutrient sources for annual ryegrass grown in podzolic soils of Newfoundland

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