The plasma membrane strength of the root-tip cells and root phenolic compounds are correiated with Al tolerance in several common woody plants

Ofei-Manu, Paul; Wagatsuma, Tadao; Ishikawa, Shinya; Tawaraya, Keitaro

doi:10.1080/00380768.2001.10408399

Cited by 90 publications

(67 citation statements)

References 41 publications

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“…Detoxification of Al in the root tissues by organic acids (Ma 2000) or phenolic compounds (Heim et a!. 1999;Ofei-Manu et a!. 2001) is possibly involved, and therefore further studies should be carried out.…”

Section: Ai Concentration In the Roots And Leavesmentioning

confidence: 99%

Difference in response to aluminum among Japanese coniferous species

Tomioka

Takenaka

2004

Soil Science and Plant Nutrition

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Seedlings of Chamaecyparis obtusa, Cryptomeria japonica D. Don, and Abies firma Sieb. et Zucco were grown hydroponically for 4 weeks in the presence or absence of aluminum (AI) and with or without reduced pH. Under exposure to AI, root and shoot growth of C. obtusa was enhanced. A. firma showed the same tendency as C. obtusa, though not significantly. Only in C. japonica, growth was reduced with AI, especially shoot growth. In all the species, callose production in the root tips was observed in the presence of AI. A positive correlation was observed between the relative root callose content and relative root growth (r = 0.83), and significant root elongation with AI treatment was observed in all the species. Therefore, it is considered that callose deposition in the root tips of these species may not indicate the AI-induced root cell injury causing root growth inhibition. The highest callose content in the root tip and strong callose fluorescence in the epidermis and zones of cell contact were observed in C. obtusa. Since the AI translocation rate from roots to leaves was the lowest in C. obtusa and since significant growth enhancement was observed in the presence of AI, it is possible that the accumulation of callose in the root epidermis and in the zones of cell contact is related to AI-resistance in C. obtusa.

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Section: Ai Concentration In the Roots And Leavesmentioning

confidence: 99%

Difference in response to aluminum among Japanese coniferous species

Tomioka

Takenaka

2004

Soil Science and Plant Nutrition

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“…Phenolic compounds have been detected basically in the cell wall, vacuole, and to a small extent in the cytoplasm and nucleus (Hutzler et al, 1998). At around neutral pH of cytosol, the binding affinity to Al ions was significantly higher for phenolic compounds than for organic acids (Ofei-Manu et al, 2001). Higher concentration of phenolic compounds is considered to be more effective for greater detoxification of Al ions in cytosol of B. decumbens.…”

Section: Lipid Composition and Phenolics Concentration In Root-tip Pomentioning

confidence: 99%

“…High concentrations of phenolic compounds have been reported as one of the promising mechanisms to explain higher level of Al resistance of a forage legume, Lotus pedunculatus Cav. (Stoutjesdijk et al, 2001) and several common woody plants (Ofei-Manu et al, 2001). …”

mentioning

confidence: 99%

Physiological and Biochemical Mechanisms of Plant Adaptation to Low-Fertility Acid Soils of the Tropics: The Case of Brachiariagrasses

Khan¹,

Rao²,

Wasaki³

et al. 2011

Principles, Application and Assessment in Soil Science

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“…The following Al exclusion mechanisms have been reported: release of phenolic compounds (Ofei-Manu et al, 2001), mucilage formation (Miyasaka and Hawes, 2001), "pH barrier" resulting from increased pH in the rhizosphere (Degenhardt et al, 1998), and organic acid exudation (Delhaize et al, 1993;Pellet et al, 1995;Sasaki et al, 2004;Magalhaes et al, 2007). Roots of several plant species secrete organic acids in response to Al, which are mediated by membrane transporters, resulting in the formation of non-toxic complexes with the metal.…”

Section: Mechanisms Of Aluminum Tolerancementioning

confidence: 99%

Review Genetic and molecular mechanisms of aluminum tolerance in plants

Simoes

Melo²,

Magalhães³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. Aluminum (Al) toxicity restricts root growth and agricultural yield in acid soils, which constitute approximately 40% of the potentially arable lands worldwide. The two main mechanisms of Al tolerance in plants are internal detoxification of Al and its exclusion from root cells. Genes encoding membrane transporters and accessory transcription factors, as well as cis-elements that enhance gene expression, are involved in Al tolerance in plants; thus studies of these genes and accessory factors should be the focus of molecular breeding efforts aimed at improving Al tolerance in crops. In this review, we describe the main genetic and molecular studies that led to the identification and cloning of genes associated with Al tolerance in plants. We include recent findings on the regulation of genes associated with Al tolerance. Understanding the genetic, molecular, and physiological aspects of Al tolerance in plants is important for generating cultivars adapted to acid soils, thereby contributing to food security worldwide.

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The plasma membrane strength of the root-tip cells and root phenolic compounds are correiated with Al tolerance in several common woody plants

Cited by 90 publications

References 41 publications

Difference in response to aluminum among Japanese coniferous species

Difference in response to aluminum among Japanese coniferous species

Physiological and Biochemical Mechanisms of Plant Adaptation to Low-Fertility Acid Soils of the Tropics: The Case of Brachiariagrasses

Review Genetic and molecular mechanisms of aluminum tolerance in plants

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