Interactions between magnesium, calcium, and aluminum on soybean root elongation

Silva, Ivo Ribeiro da; Ferrufino, Armando; Sanzonowicz, C.; Smyth, Thomas J.; Israel, Daniel W.; Júnior, Thomas E. Carter

doi:10.1590/s0100-06832005000500010

Cited by 17 publications

(6 citation statements)

References 30 publications

(27 reference statements)

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“…This evidence indicates the importance of soil acidity for the soybean development, mostly in presence of RLN. This assertion becomes more significant since higher pH levels are correlated to higher concentrations of Ca and Mg, which implies in higher V values and, therefore, lower H+Al and Al contents (SILVA et al 2005). On the other hand, neither RLN population density nor plant height showed significant correlation with P and K levels in the soil (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Relação entre atributos de solo, população de nematoide das lesões radiculares e crescimento de plantas de soja

Franchini

Debiasi

Dias

et al. 2015

Rev. Ciênc. Agrovet.

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Root-lesion nematode (RLN) (Pratylenchus brachyurus) is an important challenge to soybean production in Central Brazil due to its widespread occurrence, along with the absence of resistant cultivars and strategies for its management. The aim of this research was to evaluate the relationship among soil properties, RLN populations, and soybean crop growth using geostatistical analysis. The experiment was conducted in a soybean field located in the northern half of Mato Grosso state, in Brazil, with a history of damages by RLN. The results suggest a positive correlation between plant height and values of pH, Ca, Mg, and base saturation. On the other hand, RLN population was positively correlated with organic carbon, cation exchange capacity, and soil potential acidity. Moreover, our findings also indicate that soybean plant growth is reduced under acidic soil conditions, as susceptibility to RLN increases. Thus, the correction of soil acidity to suitable levels for soybean crop becomes an important strategy to minimize damages by RLN.

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Section: Resultsmentioning

confidence: 99%

Relação entre atributos de solo, população de nematoide das lesões radiculares e crescimento de plantas de soja

Franchini

Debiasi

Dias

et al. 2015

Rev. Ciênc. Agrovet.

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“…Já o aumento da concentração de Ca em solução diminui o efeito tóxico do Al, por reduzir a atividade do Al 3+ na superfície externa da membrana plasmática das células da raiz (Silva et al, 2005).…”

Section: Resultsunclassified

Produção de matéria seca, crescimento radicular e absorção de cálcio, fósforo e alumínio por coffea canephora e coffea arabica sob influência da atividade do alumínio em solução

Mattiello

Pereira

Zonta

et al. 2008

Rev. Bras. Ciênc. Solo

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Este trabalho teve como objetivo avaliar a produção de matéria seca, o crescimento radicular e a absorção e distribuição do Ca, P e Al nas folhas, no caule e nas raízes de dois clones de café conilon (Coffea canephora) (Mtl 25 e Mtl 27) e de uma variedade de café Catuaí Amarelo (Coffea arabica), cultivados em solução nutritiva com atividade crescente de Al3+. As plantas foram cultivadas em vasos com capacidade para 5 L, contendo solução nutritiva de Hoagland & Arnon, modificada. Após oito dias de adaptação, as plantas foram submetidas a concentrações de Al de 0, 500, 1.000 e 2.000 µmol L-1, que corresponderam a atividades de Al3+ em solução, estimadas pelo software GEOCHEM, de 20,68, 50,59, 132,9 e 330,4 µmol L-1, respectivamente. Foram determinados os teores de Ca, Al e P na planta. O sistema radicular foi separado, para determinação da área e do comprimento. A variedade Catuaí Amarelo (Coffea arabica) apresentou-se menos sensível ao Al3+, quando comparada aos clones de conilon (Coffea canephora). O clone de conilon Mtl 25 foi menos sensível ao Al3+ em relação ao Mtl 27. O aumento da atividade de Al3+ promoveu redução nos teores de P e Ca nas folhas e raízes do cafeeiro, especialmente nos clones Mtl 25 e Mtl 27. O acúmulo de Al no sistema radicular e a restrição do transporte para a parte aérea são importantes fatores na tolerância de plantas ao Al3+.

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“…Divalent cations as Ca 2+ and Mg 2+ can alleviate Al rhizotoxicity due to competition with Al for binding at sensitive sites in either the symplast or apoplast of root cells, reduction in Al saturation in the root apoplast exchange sites, and decreased Al 3+ activity at the root cell plasma membrane surface (Kinraide 1998). However, Silva et al (2005) noticed that Mg 2+ was more effective than Ca 2+ in alleviating Al toxicity in roots of soybean and that the Mg ameliorative properties could not be accounted for by estimated electrostatic changes in root membrane potential and Al 3+ activity at the root surface, being the physiological mechanisms of Mg alleviation of Al injury in roots not known. Recently, Yang et al (2006) attested that Mg helped restore Alreduced plasma membrane H + -ATPase activity in rice bean roots (Vigna umbellata).…”

Section: Discussionmentioning

confidence: 99%

Response of representative cover crops to aluminum toxicity, phosphorus deprivation, and organic amendment

Vieira

Bayer

et al. 2008

Aust. J. Agric. Res.

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This study aimed to: (1) determine the effect of P depletion and presence of Al on root and shoot growth of representative cover crops, and on their nutrient uptake; (2) characterise the composition of root exudation under P and Al stress in nutrient solution; (3) evaluate the ability of aqueous extracts of composts in reducing Al phytotoxicity. Plants of cowpea (Vigna unguiculata subsp. unguiculata), black oat (Avena strigosa), and lablab (Lablab purpureous) were cultivated in different nutrient solution compositions and concentrations for 3 weeks. It was found that Al at concentration of 20 and 200 µmol/L increased citrate exudation at least 8 and 24 times, respectively, for cowpea and 18 and 36 times, respectively, for lablab, as compared with the blank. However, no release of organic acids occurred due to P deprivation, suggesting that citrate exudation was a specific response to excess Al. No response in organic acid release was observed for black oat under the stress of P deficiency or Al toxicity. Although the presence of Al in solution did not significantly affect chlorophyll content in leaves, it decreased root and shoot weight, as well as root length, surface area, volume, and number of tips. Organic extracts alleviated aluminum toxicity, improving plant growth and ameliorating plant nutrition status. Yard waste extract was more effective in enhancing plant growth than GreenEdge extract in plants under Al stress.

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Interactions between magnesium, calcium, and aluminum on soybean root elongation

Abstract: ABSTRACT

Cited by 17 publications

References 30 publications

Relação entre atributos de solo, população de nematoide das lesões radiculares e crescimento de plantas de soja

Relação entre atributos de solo, população de nematoide das lesões radiculares e crescimento de plantas de soja

Produção de matéria seca, crescimento radicular e absorção de cálcio, fósforo e alumínio por coffea canephora e coffea arabica sob influência da atividade do alumínio em solução

Response of representative cover crops to aluminum toxicity, phosphorus deprivation, and organic amendment

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