Al-induced secretion of organic acid, gene expression and root elongation in soybean roots

Wu, Daoming; Zhao, Man; Shen, Shouying; Fu, Youqiang; Sasaki, Takayuki; Yamamoto, Yoko; Wei, Wenhui; Shen, Hong

doi:10.1007/s11738-012-1067-y

Cited by 11 publications

(7 citation statements)

References 33 publications

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“…Secretion of organic acids from plant roots has previously been confirmed to be an important mechanism whereby plants relieve Al toxicity [ 9 , 10 ]. Since the first report on the Al-induced secretion of organic acids from wheat ( Triticum aestivum ) roots [ 11 ], the results of numerous studies have indicated that many plant species or cultivars, including snapbeans ( Phaseolus vulgaris ) [ 12 ], maize ( Zea mays ) [ 13 , 14 ], sickle senna ( Cassia tora ) [ 15 , 16 ], tobacco ( Nicotiana tabacum ) [ 17 ], and soybean ( Glycine max ) [ 18 ], secrete organic acids from roots under acid-Al stress. In plants subjected to Al stress for prolonged periods, nutrient imbalance can occur, thereby limiting some elements (e.g., calcium, magnesium, nitrogen, phosphorus, and potassium) that are required for plant growth [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

et al. 2018

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Under acidic conditions, aluminum (Al) toxicity is an important factor limiting plant productivity; however, the application of phosphorus (P) might alleviate the toxic effects of Al. In this study, seedlings of two vegetatively propagated Eucalyptus clones, E. grandis × E. urophylla ‘G9’ and E. grandis × E. urophylla ‘DH32-29’were subjected to six treatments (two levels of Al stress and three levels of P). Under excessive Al stress, root Al content was higher, whereas shoot and leaf Al contents were lower with P application than those without P application. Further, Al accumulation was higher in the roots, but lower in the shoots and leaves of G9 than in those of DH32-29. The secretion of organic acids was higher under Al stress than under no Al stress. Further, under Al stress, the roots of G9 secreted more organic acids than those of DH32-29. With an increase in P supply, Al-induced secretion of organic acids from roots decreased. Under Al stress, some enzymes, including PEPC, CS, and IDH, played important roles in organic acid biosynthesis and degradation. Thus, our results indicate that P can reduce Al toxicity via the fixation of elemental Al in roots and restriction of its transport to stems and leaves, although P application cannot promote the secretion of organic acid anions. Further, the higher Al-resistance of G9 might be attributed to the higher Al accumulation in and organic acid anion secretion from roots and the lower levels of Al in leaves.

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Section: Introductionmentioning

confidence: 99%

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

et al. 2018

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“…7,12 The exudation of organic acids is mediated by membranelocalized organic acids transporters, which belong to 2 families, ALMT (Al-activated malate transporter) and MATE (multidrug and toxic compound extrusion). Several genes encoding ALMT1 and MATE-family proteins have been identified from the roots of wheat, 13 Arabidopsis, 14 sorghum, 15 rice bean, 16 soybean, 17,18 and alfalfa, 19,20 And the identification and function of organic transporter genes in plant resistance to Al stress have been widely reviewed. [21][22][23] Beside on Al-induced organic acids transporter gene's expression, plasma membrane H C -ATPase is also involved in Al-induced organic acid process.…”

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confidence: 99%

Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

Yu¹,

Kan

Zhang³

et al. 2016

Plant Signaling & Behavior

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“…The first malate transporter gene, TaALMT1 (encoding an aluminum-activated malate transporter, ALMT), was isolated from the root tips of Al-tolerant wheat ( Triticum aestivum L.) ET8 [ 30 ]. The malate transporter genes from other crops, such as BnALMT1 and BnALMT2 in rape ( Brassica napus ), GmALMT1 in soybean ( G. max ), and ScALMT1 in rye ( Secale cereale L.), shared similar functional characteristics with TaALMT1 [ 31 , 32 , 33 , 34 ]. Multidrug and toxic compound extrusion (MATE) proteins facilitate citrate efflux from plant root apices, which can chelate and detoxify Al 3+ in the apoplast and rhizosphere around root apices [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptome Analysis of Two Contrasting Soybean Varieties in Response to Aluminum Toxicity

Zhao

Cui

Cai

et al. 2020

IJMS

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Aluminum (Al) toxicity is a major factor limiting crop productivity on acid soils. Soybean (Glycine max) is an important oil crop and there is great variation in Al tolerance in soybean germplasms. However, only a few Al-tolerance genes have been reported in soybean. Therefore, the purpose of this study was to identify candidate Al tolerance genes by comparative transcriptome analysis of two contrasting soybean varieties in response to Al stress. Two soybean varieties, M90-24 (M) and Pella (P), which showed significant difference in Al tolerance, were used for RNA-seq analysis. We identified a total of 354 Al-tolerance related genes, which showed up-regulated expression by Al in the Al-tolerant soybean variety M and higher transcript levels in M than P under Al stress. These genes were enriched in the Gene Ontology (GO) terms of cellular glucan metabolic process and regulation of transcription. Five out of 11 genes in the enriched GO term of cellular glucan metabolic process encode cellulose synthases, and one cellulose synthase gene (Glyma.02G205800) was identified as the key hub gene by co-expression network analysis. Furthermore, treatment of soybean roots with a cellulose biosynthesis inhibitor decreased the Al tolerance, indicating an important role of cellulose production in soybean tolerance to Al toxicity. This study provides a list of candidate genes for further investigation on Al tolerance mechanisms in soybean.

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Al-induced secretion of organic acid, gene expression and root elongation in soybean roots

Cited by 11 publications

References 33 publications

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

Comparative Transcriptome Analysis of Two Contrasting Soybean Varieties in Response to Aluminum Toxicity

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Al-induced secretion of organic acid, gene expression and root elongation in soybean roots

Cited by 11 publications

References 33 publications

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

Phosphorus application reduces aluminum toxicity in two Eucalyptus clones by increasing its accumulation in roots and decreasing its content in leaves

Role of the plasma membrane H+-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency

Comparative Transcriptome Analysis of Two Contrasting Soybean Varieties in Response to Aluminum Toxicity

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Role of the plasma membrane H⁺-ATPase in the regulation of organic acid exudation under aluminum toxicity and phosphorus deficiency