Aluminum and Temperature Alteration of Cell Membrane Permeability of <i>Quercus rubra</i>

Chen, Junping; Sucoff, Edward; Stadelmann, E.

doi:10.1104/pp.96.2.644

Cited by 56 publications

(23 citation statements)

References 24 publications

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“…5). Although several reports have focused on the physical changes of artificial liposomes and PM (Deleers et al 1985;Suhayda and Haug 1986;Zhao et al 1987;Chen et al 1991), this is the first evidence suggesting the existence of an early strategy for A1 tolerance that is regulated by PM lipid. As the intact PM lipid bilayers differ in the com-position between inner and outer leaflet, the present permeability result can be accepted as the average characteristics of the reconstituted homogenous lipid bilayers of PM.…”

Section: Resultsmentioning

confidence: 75%

Plasma Membrane Lipids Are the Powerful Components for Early Stage Aluminum Tolerance in Triticale

Wagatsuma¹,

Ishikawa²,

Uemura³

et al. 2005

Soil Science and Plant Nutrition

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Section: Resultsmentioning

confidence: 75%

Plasma Membrane Lipids Are the Powerful Components for Early Stage Aluminum Tolerance in Triticale

Wagatsuma¹,

Ishikawa²,

Uemura³

et al. 2005

Soil Science and Plant Nutrition

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“…Interaction of Al with membrane components modifies the membrane structural properties such as fluidity and permeability (Khan et al 2009;Vierstra and Haug 1978;Wagatsuma et al 2005). In the root cortical cells of Northern red oak (Quercus rubra L.), it was found that Al decreased the membrane permeability to water (Chen et al 1991;Zhao et al 1987). Water absorption into the root cells is also controlled by the water potential gradient which acts as the driving force for water uptake and build-up of turgor which is a prerequisite for cell extension.…”

Section: Aluminium Toxicity and Root Water-relationsmentioning

confidence: 99%

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

2013

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Background Aluminium (Al) toxicity and drought stress are two major constraints for crop production in the world, particularly in the tropics. The variation in rainfall distribution and longer dry spells in much of the tropics during the main growing period of crops are becoming increasingly important yield-limiting factors with the global climate change. As a result, crop genotypes that are tolerant of both drought and Al toxicity need to be developed. Scope The present review mainly focuses on the interaction of Al and drought on root development, crop growth and yield on acid soils. It summarizes evidence from our own studies and other published/related work, and provides novel insights into the breeding for the adaptation to these combined abiotic stresses. The primary symptom of Al phytotoxicity is the inhibition of root growth. The impeded root system will restrict the roots for exploring the acid subsoil to absorb water and nutrients which is particularly important under condition of low soil moisture in the surface soil under drought. Whereas drought primarily affects shoot growth, effects of phytotoxic Al on shoot growth are mostly secondary effects that are induced by Al affecting root growth and function, while under drought stress root growth may even be promoted. Much progress has recently been made in the understanding of the physiology and molecular biology of the interaction between Al toxicity and drought stress in common bean (Phaseolus vulgaris L.) in hydroponics and in an Al-toxic soil. Conclusions Crops growing on acid soils yield less than their potential because of the poorly developed root system that limits nutrient and water uptake. Breeding for drought resistance must be combined with Al resistance, to assure that drought resistance is expressed adequately in crops grown on soils with acid Al-toxic subsoils.

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“…Al is known to affect directly membrane structure and permeability (Vierstra and Haug, 1978;Haug, 1984;Zhao et al, 1987;Caldwell, 1989;Chen et al, 1991), and disruption of membrane transport processes can severely limit nutrient accumulation in the long term (Taylor, 1988a). However, for an observed response to A1 stress to be implicated in the inhibition of root growth, it must occur within the first few hours of exposure.…”

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confidence: 99%

Interaction between Aluminum Toxicity and Calcium Uptake at the Root Apex in Near-Isogenic Lines of Wheat (Triticum aestivum L.) Differing in Aluminum Tolerance

Ryan¹,

Kochian²

1993

Plant Physiol.

115

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Aluminum (AI) is toxic to plants at pH < 5.0 and can begin to inhibit root growth within 3 h in solution experiments. l h e mechanism by which this occurs is unclear. Disruption of calcium (Ca) uptake by AI has long been considered a possible cause of toxicity, and recent work with wheat (Triticum aestivum 1 . Thell) has demonstrated that Ca uptake at the root apex in an AI-sensitive cultivar (Scout 66) was inhibited more than in a tolerant cultivar (Atlas 66)Physiol 98: 230-237). We investigated this interaction further in wheat by measuring root growth and Ca uptake in three separate pairs of near-isogenic lines within which plants exhibit differential sensitivity to AI. The vibrating calcium-selective microelectrode technique was used to estimate net Ca uptake at the root apex of 6-d-old seedlings. Following the addition of 20 or 50 PM AIC13, exchange of Ca for AI in the root apoplasm caused a net Ca efflux from the root for up to 10 min. After 40 min of exposure to 50 p~ AI, cell wall exchange had ceased, and Ca uptake in the AI-sensitive plants of the near-isogenic lines was inhibited, whereas in the tolerant plants i t was either unaffected or stimulated. This provides a general correlation between the inhibition of growth by AI and the reduction in Ca influx and adds some support to the hypothesis that a Ca/AI interaction may be involved in the primary mechanism of AI toxicity in roots. In some treatments, however, AI was able to inhibit root growth significantly without affecting net Ca influx. This suggests that the correlation between inhibition of Ca uptake and the reduction in root growth may not be a mechanistic association. The inhibition of Ca uptake by AI is discussed, and we speculate about possible mechanisms of tolerance. Aluminumtoxicity is believed to be the major factor limiting plant growth in acid soils. The primary symptom of Al stress is inhibition of root growth, which can begin to

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Aluminum and Temperature Alteration of Cell Membrane Permeability of Quercus rubra

Cited by 56 publications

References 24 publications

Plasma Membrane Lipids Are the Powerful Components for Early Stage Aluminum Tolerance in Triticale

Plasma Membrane Lipids Are the Powerful Components for Early Stage Aluminum Tolerance in Triticale

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

Interaction between Aluminum Toxicity and Calcium Uptake at the Root Apex in Near-Isogenic Lines of Wheat (Triticum aestivum L.) Differing in Aluminum Tolerance

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