Efeito do alumínio sobre o crescimento de duas espécies florestais

Beutler, Amauri Nelson; Fernandes, Luiz Arnaldo; Faquin, Valdemar

doi:10.1590/s0100-06832001000400015

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…The phytotoxic effect of this metal in plant development was reflected in the lowest shoot growth at the highest level of active Al 3+ in solution. According to Beutler, Fernandes and Faquin (2001), among the effects of Al toxicity on shoots was a reduction in the height and dry matter production of plants. Figure 1.…”

Section: Resultsmentioning

confidence: 99%

“…According to Beutler, Fernandes and Faquin (2001), among the effects of Al toxicity on shoots was a reduction in the height and dry matter production of plants. Figure 1.…”

Section: Resultsmentioning

confidence: 99%

“…Aluminum toxicity manifests initially as a reduced rate of root elongation after contact with a solution containing Al (HARTWIG et al, 2007), and drastic reduction in shoot growth (BEUTLER;FAQUIN, 2001). Phytotoxic effects of Al on roots include reductions in dry matter yield, the number and length of lateral roots, and root area, which are often associated with increases in the mean root diameter and root volume POSCHENRIEDER, 2002;HARTWIG et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

et al. 2012

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Aluminum (Al 3+) toxicity is a major limiting factor to crop productivity in acid soils. The effects of aluminum on root and shoot growth of physic nut (Jatropha curcas L.) young plants and, the uptake and distribution of phosphorus, calcium, magnesium and aluminum in the roots and shoots were investigated in the present study. Plants were grown in 2.5L pots in a greenhouse. After fourteen days of adaptation to nutrient solution, plants were exposed to Al concentrations of 0, 370, 740, 1,100 and 1,480 μmol L -1 , corresponding to an active Al 3+ solution of 13.3, 35.3, 90.0, 153.3 and 220.7 μmol L -1 , respectively. The dry matter partitioning between roots, stems and leaves, and the concentrations of P, Ca, Mg and Al in plant tissue, were measured after 75 days exposure to Al. The increasing level of Al 3+ activity in solution progressively decreased the growth of the shoot and root of physic nut plants, and at the two highest active Al 3+ levels, plants showed morphological abnormalities typical of the toxicity caused by this metal. Higher Al 3+ activity reduced P concentrations in leaves and Ca and Mg in leaves and roots of physic nut, demonstrating the effect of Al on the uptake, transport and use of these nutrients by plants. The Al accumulated preferentially in the roots of physic nut, whereas only a small amount was transported to shoots. Key words: Jatropha curcas, aluminum toxicity, aluminum tolerance Resumo

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Section: Resultsmentioning

confidence: 99%

“…According to Beutler, Fernandes and Faquin (2001), among the effects of Al toxicity on shoots was a reduction in the height and dry matter production of plants. Figure 1.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

et al. 2012

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“…Those effects are observed as a consequence of the inhibition of root growth (Beutler et al, 2001). This fact is probably due to the increase in the activity of the proteases enzyme, which break the reserve proteins in plants exposed to long periods of water deficit, increasing the content of total soluble amino acids, aiming at adjusting osmotically to the stressing medium (Kerbayy, 2004).…”

Section: Resultsmentioning

confidence: 99%

Nitrogen compounds, proteins and amino acids in corn subjected to doses of aluminum

Souza¹,

Nogueira²,

Machado³

et al. 2016

Afr. J. Agric. Res.

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Corn (Zea mays L.) is highly adaptable, but it has difficulties in expressing its productive potential in soils with high aluminum content, since this element is directly related to high acidity in the soil. The objective of this study was to evaluate the nitrogen compounds, proteins and amino acids of two corn cultivars subjected to increasing doses of aluminum. The experiment was carried out in a greenhouse using one of the corn plants from varieties BRS 106 and BRS 4157. The experimental design was entirely randomized, in a factorial design of 5x2, and the factors were composed of five doses of Al 3+ (0; 50; 100; 150 and 200 mmol L-1), with five repetitions. The variables analyzed were the concentration of nitrate, the activity of the nitrate reductase, concentration of ammonium, amino acids and proteins. There was a decrease in nitrate, activity of the Reductase enzyme of the Nitrate and protein in the highest dose of aluminum (200 mmol L-1) for both cultivars. There was an increase in ammonium and amino acids in the leaves of cultivars BRS 106 and BRS 4157. Cultivars BRS 106 and BRS 4157 were affected by the increasing doses of aluminum, but cultivar BRS 106 showed to be more tolerant.

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“…Apesar deste esforço, ainda são baixos os rendimentos de grãos obtidos em lavouras implantadas em solos ácidos. Isso ocorre porque o alumínio determina pequeno crescimento de raízes, menor volume de solo explorado e prejuízos na absorção de água e nutrientes, o que promove redução no tamanho de folhas e na matéria seca acumulada na parte aérea (BEUTLER et al, 2001). A dose de calcário adequada ao trigo é definida objetivando atingir pH em H 2 O de 6,0 e índice de saturação por bases de 65% (COMISSÃO DE QUÍMICA E FERTILIDADE DE SOLO-RS/SC, 2004).…”

Section: Introductionunclassified

A aplicação precoce de nitrogênio em cobertura não aumenta o rendimento de grãos do trigo cultivado na presença do alumínio

et al. 2008

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Efeito do alumínio sobre o crescimento de duas espécies florestais

Abstract: RESUMO

Cited by 8 publications

References 17 publications

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

Nitrogen compounds, proteins and amino acids in corn subjected to doses of aluminum

A aplicação precoce de nitrogênio em cobertura não aumenta o rendimento de grãos do trigo cultivado na presença do alumínio

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