Aluminum regulates oxalate secretion and plasma membrane H+-ATPase activity independently in tomato roots

Yang, Jian; Zhu, Xiao Fang; Peng, You Xiang; Cheng, Zheng; Ming, Feng; Zheng, Shao Jian

doi:10.1007/s00425-011-1402-3

Cited by 42 publications

(24 citation statements)

References 42 publications

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“…They concluded that the Al-induced secretion of malate from wheat roots was accompanied by changes in PM surface potential and activation of H + -ATPase [118]. However, the Al-induced changes of root PM H + -ATPase activity were not associated with oxalate secretion in two tomato cultivars differing in the ability to secrete oxalate under Al stress [66]. Other studies showed Al inhibited root PM H + -ATPase activity in barley [119], squash ( Cucurbita pepo ) [120], and rice bean [121].…”

Section: Aluminium-induced Secretion Of Organic Acid Anions From Rmentioning

confidence: 99%

Roles of Organic Acid Anion Secretion in Aluminium Tolerance of Higher Plants

Yang

Jiang

et al. 2013

BioMed Research International

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Approximately 30% of the world's total land area and over 50% of the world's potential arable lands are acidic. Furthermore, the acidity of the soils is gradually increasing as a result of the environmental problems including some farming practices and acid rain. At mildly acidic or neutral soils, aluminium(Al) occurs primarily as insoluble deposits and is essentially biologically inactive. However, in many acidic soils throughout the tropics and subtropics, Al toxicity is a major factor limiting crop productivity. The Al-induced secretion of organic acid (OA) anions, mainly citrate, oxalate, and malate, from roots is the best documented mechanism of Al tolerance in higher plants. Increasing evidence shows that the Al-induced secretion of OA anions may be related to the following several factors, including (a) anion channels or transporters, (b) internal concentrations of OA anions in plant tissues, (d) temperature, (e) root plasma membrane (PM) H+-ATPase, (f) magnesium (Mg), and (e) phosphorus (P). Genetically modified plants and cells with higher Al tolerance by overexpressing genes for the secretion and the biosynthesis of OA anions have been obtained. In addition, some aspects needed to be further studied are also discussed.

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Section: Aluminium-induced Secretion Of Organic Acid Anions From Rmentioning

confidence: 99%

Roles of Organic Acid Anion Secretion in Aluminium Tolerance of Higher Plants

Yang

Jiang

et al. 2013

BioMed Research International

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“…Unfortunately, few studies have focused on the response of tomato to Al stress. In a previous study, we characterized root organic acid anions secretion from tomato roots [23]; however, the underlying molecular basis is unknown. In the preset study, we aimed to provide a comprehensive view of the NAC gene family in tomato and to identify members involved in the response to Al stress.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification and expression analysis of the NAC transcription factor family in tomato (Solanum lycopersicum) during aluminum stress

Jin

Wang

et al. 2020

BMC Genomics

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Background: The family of NAC proteins (NAM, ATAF1/2, and CUC2) represent a class of large plant-specific transcription factors. However, identification and functional surveys of NAC genes of tomato (Solanum lycopersicum) remain unstudied, despite the tomato genome being decoded for several years. This study aims to identify the NAC gene family and investigate their potential roles in responding to Al stress. Results: Ninety-three NAC genes were identified and named in accordance with their chromosome location. Phylogenetic analysis found SlNACs are broadly distributed in 5 groups. Gene expression analysis showed that SlNACs had different expression levels in various tissues and at different fruit development stages. Cycloheximide treatment and qRT-PCR analysis indicated that SlNACs may aid regulation of tomato in response to Al stress, 19 of which were significantly up-or down-regulated in roots of tomato following Al stress. Conclusion: This work establishes a knowledge base for further studies on biological functions of SlNACs in tomato and will aid in improving agricultural traits of tomato in the future.

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“…For instance, wheat ( Triticum aestivum ), Arabidopsis thaliana and oilseed rape ( Brassica napus ) release malate for Al detoxification (Delhaize et al 1993; Ligaba et al 2006; Hoekenga et al 2003), whereas snapbean ( Phaseolus vulgaris ), rice bean ( Vigna umbellata ), maize ( Zea mays ), and soybean ( Glycine max ) secrete citrate to detoxify Al (Miyasaka et al 1991; Pellet et al 1995; Yang et al 2000; Liu et al 2013; Yang et al 2006). Oxalate is exuded from roots of buckwheat, tomato and spinach ( Spinacia oleracea ) under Al stress (Ma et al 1997; Zheng et al 1998; Yang et al 2005; Yang et al 2011). Recently, genes responsible for the Al-activated secretion of malate and citrate have been identified in plants (Furukawa et al 2007; Magalhaes et al 2007; Sasaki et al 2004), but genes required for oxalate release are still unknown.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of an Aluminum-resistant Mutant in Rice

Liu

Gao

et al. 2016

Rice

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BackgroundAluminum (Al) toxicity represents a major constraint for crop production on acid soils. Rice is a high Al-resistant plant species among small-grain cereals, but its molecular mechanisms of Al resistance are not fully understood. We adopted a forward genetic screen strategy to uncover the Al-resistance mechanisms in rice. In this study, we screened an ethylmethylsulfone (EMS)-mutagenized library to isolate and characterize mutants with altered sensitivity to Al in rice.ResultsTreatment of an Al-intolerant indica variety Kasalath with 20 μM Al induced root swelling. This phenotype could be suppressed by the addition of aminoethoxyvinylglycine (AVG, an ethylene synthesis inhibitor), suggesting that increased production of ethylene is responsible for the root swelling under Al stress. By utilizing the root swelling as an indicator, we developed a highly effective method to screen Al-sensitive or -resistant mutants in rice. Through screening of ~5000 M2 lines, we identified 10 Al-sensitive mutants and one Al-resistant mutant ral1 (resistance to aluminum 1). ral1 mutant showed short root phenotype under normal growth condition, which was attributed to reduced cell elongation in the mutant. A dose-response experiment revealed that ral1 mutant was more resistant to Al than wild-type (WT) at all Al concentrations tested. The mutant was also more resistant to Al when grown in an acid soil. The mutant accumulated much lower Al in the root tips (0–1 cm) than WT. The mutant contained less Al in the cell wall of root tips than WT, whereas Al concentration in the cell sap was similar between WT and the mutant. In addition to Al, the mutant was also more resistant to Cd than WT. Quantitative RT-PCR analysis showed that the expression levels of known Al-resistance genes were not increased in the mutant compared to WT. Genetic analysis indicated that the Al-resistance phenotype in ral1 mutant was controlled by a single recessive gene mapped on the long arm of chromosome 6.ConclusionsWe have developed a highly efficient method for the screening of rice mutants with altered Al sensitivity. We identified a novel mutant ral1 resistant to Al by this screening. The increased resistance of ral1 to Al toxicity is caused by the reduced Al binding to the cell wall of root tips and the responsible gene is mapped on the long arm of chromosome 6.

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Aluminum regulates oxalate secretion and plasma membrane H+-ATPase activity independently in tomato roots

Cited by 42 publications

References 42 publications

Roles of Organic Acid Anion Secretion in Aluminium Tolerance of Higher Plants

Roles of Organic Acid Anion Secretion in Aluminium Tolerance of Higher Plants

Genome-wide identification and expression analysis of the NAC transcription factor family in tomato (Solanum lycopersicum) during aluminum stress

Isolation and Characterization of an Aluminum-resistant Mutant in Rice

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