Breeding Bread Wheat for Tolerance to Aluminum Toxicity

Camargo, Carlos Eduardo de Oliveira; Filho, Antônio Wilson Penteado Ferreira

doi:10.1007/978-94-017-3674-9_88

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Due to the agronomic importance of Al 3? toxicity, it is necessary to improve the Al tolerance of crops, which is possible using conventional plant breeding technology (Pinto-Carnide and Guedes-Pinto 2000;de Camargo and Filho 2001;Poschenrieder et al 2008) or biotechnological methods, including in vitro cell and tissue cultures (Arihara et al 1991), cytogenetic approaches (Miller et al 1997) and the creation of transgenic plants, for example by the overexpression of the citrate synthase gene (CSb) (de la Fuente et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Changes in antioxidant gene expression and induction of oxidative stress in pea (Pisum sativum L.) under Al stress

Panda

Matsumoto

2010

Biometals

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Aluminium toxicity has been recognized as a primary growth-limiting factor in acid soil, resulting in a decrease in plant growth and production. In this experiment we have studied the induction of oxidative stress and changes in antioxidant gene expression in pea (var. ALASKA) under aluminium (Al) stress. We have found that Al treatment affected the growth of pea plant and induced oxidative stress with a change in antioxidant gene expression profile. While the expression of glutathione-s-transferase (GST) and catalase (CAT) was more in root, cytosolic Ascorbate peroxidase (cAPX) expression increased in shoot under aluminium stress. Copper-Zinc Superoxide dismutase (Cu-Zn SOD) gene expression was higher after 24 h but decreased after 48 h along with elevated expression of manganese superoxide dismutase (MnSOD) and iron-superoxide dismutase (FeSOD) at higher aluminium contentrations after 24 and 48 h. Aluminium stress elevated hydrogen peroxide (H 2 O 2 ) level and affected the growth. The proline content did not change significantly, whereas glutathione content increased with a decreased ascorbate content under Al stress. The present study indicates that aluminium treatment affected the antioxidant gene expression and induced oxidative stress in pea plant.

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Section: Introductionmentioning

confidence: 99%

Changes in antioxidant gene expression and induction of oxidative stress in pea (Pisum sativum L.) under Al stress

Panda

Matsumoto

2010

Biometals

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“…Aluminium toxicity is a major constraint for crop production in acidic soils worldwide. Therefore, serious efforts are being made to reduce yield losses in these soils, using conventional breeding (de Camargo and Filho 2001) or biotechnological methods (Zhu et al 2003; Hoekenga et al 2006). Crop plants with increased Al tolerance were obtained by cytogenetic approaches (Miller et al 1997) and by the production of transgenic plants, where the citrate synthase CSb gene (De la Fuente et al 1997) or the malate transporter ALMT1 gene (Delhaize et al 2004) is ectopically overexpressed.…”

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confidence: 99%

A cytological study on aluminium‐treated wheat anther cultures resulting in plants with increased Al tolerance

Bakos¹,

Darkó²,

Ascough

et al. 2008

Plant Breeding

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The in vitro selection of microspores and microspore-derived structures under Al stress is one way to improve the Al tolerance of crops. In our study, cytological alterations caused by Al were examined in anther cultures of a commercial wheat (Triticum aestivum L.) variety ÔMv Pa´lmaÕ, and the efficiency of in vitro selection was demonstrated. Although the anther walls retarded the appearance of toxicity symptoms, cytological changes similar to those observed in root cells (inhibition of cell division, intense vacuolisation, occurrence of micronuclei and cell wall thickening) were detected in the microspores. The severity of Al toxicity and the efficiency of selection depended on the Al concentration and the mode of treatment. Single Al treatments (0.6 and especially 1.6 mM) allowed DH lines with increased Al tolerance to be selected. Repeated Al treatment severely inhibited the cell division of the microspores and it was lethal even at a concentration as low as 0.6 mM. The results show that microspore embryogenesis can be exploited for studying the cytological effect of Al and for increasing the Al tolerance of wheat.

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Aluminium Toxicity to Plants as Influenced by the Properties of the Root Growth Environment Affected by Other Co-Stressors: A Review

Siecińska

Nosalewicz

2016

Reviews of Environmental Contamination and Toxicology

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Aluminium toxicity to crops depends on the acidity of the soil and specific plant resistance. However, it is also strongly affected by other environmental factors that have to be considered to properly evaluate the resultant effects on plants. Observed weather perturbations and predicted climate changes will increase the probability of co-occurrence of aluminium toxicity and other abiotic stresses.In this review the mechanisms of plant-aluminium interactions are shown to be influenced by soil mineral nutrients, heavy metals, organic matter, oxidative stress and drought. Described effects of aluminium toxicity include: root growth inhibition, reduction in the uptake of mineral nutrients resulting from the inhibition of transport processes through ion channels; epigenetic changes to DNA resulting in gene silencing. Complex processes occurring in the rhizosphere are highlighted, including the role of soil organic matter and aluminium detoxification by mucilage.There is a considerable research gap in the understanding of root growth in the soil environment in the presence of toxic aluminium concentrations as affected by interactions with abiotic stressors. This knowledge is important for the selection of feasible methods aimed at the reduction of negative consequences of crop production in acidic soils affected by adverse growth environment.

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Breeding Bread Wheat for Tolerance to Aluminum Toxicity

Cited by 4 publications

References 9 publications

Changes in antioxidant gene expression and induction of oxidative stress in pea (Pisum sativum L.) under Al stress

Changes in antioxidant gene expression and induction of oxidative stress in pea (Pisum sativum L.) under Al stress

A cytological study on aluminium‐treated wheat anther cultures resulting in plants with increased Al tolerance

Aluminium Toxicity to Plants as Influenced by the Properties of the Root Growth Environment Affected by Other Co-Stressors: A Review

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