Aluminum stress and its role in the phospholipid signaling pathway in plants and possible biotechnological applications

Poot-Poot, Wilberth Alfredo; Hernández‐Sotomayor, S.M. Teresa

doi:10.1002/iub.550

Cited by 30 publications

(7 citation statements)

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“…Species and genotypes within species greatly differ in their tolerance to Al [ 2 ]. Investigations on the toxicity and resistance mechanisms have often been performed taking physiological and genetic basis of resistance into consideration [ 6 , 7 ]. Some investigations indicate that Al uptake is limited mainly to the root system, where it accumulates predominantly in the epidermis and the outer cortex [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Accumulation and cellular toxicity of aluminum in seedling of Pinus massoniana

et al. 2014

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BackgroundMasson pine (Pinus massoniana) is one of the most important timber species with adaptable, fast growing, versatile advantages in southern China. Despite considerable research efforts, the cellular and molecular mechanisms of A1 toxicity and resistance in P. massoniana are still poorly understood. The effects of Al on uptake and translocation of Al and other minerals, cell division and nucleolus in P. massoniana were investigated.ResultsThe results indicated that Al accumulated mainly in the roots, and small amounts were transported to aboveground organs. In the presence of Al, the contents of Mg and Fe in stems increased and decreased in roots. Accumulation of Mn in the organs was inhibited significantly. Evidence from cellular experiments showed that Al had an inhibitory effect on the root growth at all concentrations (10−5 – 10−2 M) used. Chromosome fragments, chromosome bridges, C-mitosis and chromosome stickiness were induced during mitosis in the root tip cells. Al induced the formation of abnormal microtubule (MT) arrays, consisting of discontinuous wavy MTs or short MT fragments at the cell periphery. MT organization and function of the mitotic spindle and phragmoplast were severely disturbed. The nucleolus did not disaggregate normally and still remained its characteristic structure during metaphase. Nucleolar particles containing argyrophilic proteins were accumulated and leached out from the nucleus to the cytoplasm. Evidence confirmed that these proteins contained nucleophosmin (B23), nucleolin (C23) and fibrillarin. Western immunoblot analysis revealed that the contents of three nucleolar proteins increased significantly.ConclusionBased on the information provided in this article, it is concluded that root tips of plants are the most sensitive organ to environmental stresses and the accumulation of Al ions primarily is in roots of P. massoniana, and small amounts of Al are transported to aboveground. Root apical meristems play a key role in the immediate reaction to stress factors by activating signal cascades to the other plant organs. Al induces a series of the cellular toxic changes concerning with cell division and nucleolus. The data presented above can be also used as valuable and early markers in cellular changes induced by metals for the evaluation of metal contamination.

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Section: Introductionmentioning

confidence: 99%

Accumulation and cellular toxicity of aluminum in seedling of Pinus massoniana

et al. 2014

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“…Due to its proposed roles in signal transduction within plant tissues [32], Al-based compounds could represent an additional option for crop valorisation and protection, either by complementing other chemicals and fertilization regimens to promote plant growth and productivity, or to enhance plant protection by inhibiting pests and pathogens, particularly in situations of acquired resistance to currently used control compounds.…”

Section: Aluminiummentioning

confidence: 99%

Non-Essential Elements and Their Role in Sustainable Agriculture

et al. 2022

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Agricultural systems are constantly under environmental pressure, and the continuous rise of the global population requires an increasingly intensification of agronomical productivity. To meet the current global food demand, particularly in depleted ecosystems under adverse climate conditions, the development of novel agronomical practices, which ensure crop productivity while safeguarding minimal impact to the environment, must be encouraged. Since aluminium (Al), cobalt (Co), selenium (Se), silicon (Si) and sodium (Na) are not essential to plant metabolism, their benefits are often neglected or underestimated in agriculture; however, several studies support their advantages in sustainable agriculture when properly employed. The agronomical uses of these elements have been studied in the last decades, delivering important cues for the improvement of food and feed production worldwide due to beneficial effects in plant growth and productivity, nutrient balance, pest and pathogen resistance, water stress management, heavy-metal toxicity alleviation, and postharvest performance. However, their application has not been addressed as part of a holistic conservation strategy that supports the sustainability of agroecosystems. Here, we discuss the potential use of these elements in sustainable agriculture, and the knowledge gaps that hinder their effective integration into agronomical practices, which result in equally profitable applications while supporting environmental sustainability.

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“…These fields include aerospace industry, automobiles, computers, packing materials, electrical equipment, machinery, food additives, building construction, clinical drugs and water purification [1,2] . Aluminum also plays a great role in biochemical reactions, such as enzyme-catalyzed reactions [3] , biotechnological transformation [4] , and others. However, nowadays, a large amount of medical research reveals that excessive absorption of aluminum is harmful to human health.…”

Section: Introductionmentioning

confidence: 99%