Allocation of Na, Cl, K and Ca within plant tissues in globe artichoke (Cynara scolimus L.) under saline-sodic conditions

Graifenberg, A.; Giustiniani, L.; Temperini, O.; Paola, M. Lipucci Di

doi:10.1016/0304-4238(95)00797-w

Cited by 33 publications

(19 citation statements)

References 11 publications

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“…Essa seletividade do sistema radicular para o K e o Na deve ser equilibrada deforma a atender concentrações adequadas de K exigidos para processos metabólicos, regulamentação do transporte de íons e para o ajustamento osmótico (Grattan & Grieve, 1999). Estudos com nabo forrageiro (Francois,1984), feijão guandu (Subbarao et al, 1990), milho (Izzo et al, 1991), alcachofra (Graifenberg et al, 1995) e tomate (Perez-Alfocea et al, 1996) mostraram que a salinidade diminuiu concentração de K nos tecidos vegetais enquanto que nas raízes aumentou.…”

Section: Resultsunclassified

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Garcia¹,

Nazário²,

Gonçalves³

et al. 2012

R_I

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4Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, ivo_zution@yahoo.com.br 5 Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, joaocarlosagr@hotmail.com 6 Eng. Agrônomo, D.S., Prof. do Depto. de Produção Vegetal, CCAUFES, Alegre, ES, jata@cca.ufes.br RESUMOObjetivando avaliar a nutrição em mudas do cafeeiro conilon variedade robusta decorrentes da irrigação com água salina foi conduzido um experimento em casa de vegetação, montado no delineamento inteiramente casualizado com cinco tratamentos constituídos de um irrigado com água doce e quatro com água salina nas concentrações de 1,0; 2,0; 3,0 e 4,0 dS m -1 com quatro repetições. Para avaliar os efeitos da salinidade sobre a nutrição do cafeeiro foi realizada uma análise nutricional determinando os teores foliares e nas raízes de N, P, K, Ca, Mg, S e Na aos 125 dias após o plantio das mudas. Com os resultados obtidos verificou-se que a irrigação com água salina elevou os teores de Na nas folhas e raízes; proporcionou maiores teores N, Ca e Na nas folhas, K, Mg e S nas raízes, enquanto que a concentração de P não diferiu. Palavras-chave:Estresse salino. Nutrição mineral. Coffea canephora Pierre. GARCIA, G. de O.; NAZÁRIO, A. A.; GONÇALVES, I. Z.; MADALÃO, J. C.; AMARAL, J. A. T. do. NUTRITION OF COFFEE CONILON IRRIGATED WITH SALINE WATER. ABSTRACTIn order to evaluate nutrition of seedlings conilon coffee under irrigation with saline water an experiment was conducted in a greenhouse, in a completely randomized design with five treatments consisted of irrigation with fresh water and irrigation with four concentrations of saline water: 1.0, 2.0, 3.0 and 4.0 dS m -1 , with four replications. To evaluate the effects of salinity on coffee tree's a nutrition analysis was performed by determining the nutritional content in leaves and roots of N, P, K, Ca, Mg, S and Na, at 125 days after planting. The results obtained showed that irrigation with saline water increased the levels of Na in leaves and roots; resulting in higher levels of N, Ca and Na in the leaves, and of K, Mg and S in the roots; the concentration of P did not differ.

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Section: Resultsunclassified

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Garcia¹,

Nazário²,

Gonçalves³

et al. 2012

R_I

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“…Root pressure, the process that would normally provide Ca 2 movement to the inner bracts, was severely reduced as soil salinity increased. In contrast, Graifenberg et al (1993Graifenberg et al ( , 1995 observed no visible damage to artichoke buds in response to NaCl-salinity. These investigators reported only small reductions in calcium allocation to bud tissue as salt stress increased.…”

Section: Effects Of Salinity On Calcium-related Disorders In Vegetatimentioning

confidence: 91%

“…Francois, 1984;Subbarao et al, 1990;Izzo et al, 1991;Graifenberg et al, 1995;Pe Ârez-Alfocea et al, 1996). In contrast, other research has demonstrated that K may be preferentially acquired and transported against a strong Na concentration gradient.…”

Section: Potassiummentioning

confidence: 99%

“…Differences in artichoke response reported by the two research teams were undoubtedly the result of disparate environmental conditions. In contrast to the greenhouse pot culture experiments described by Graifenberg et al, 1993Graifenberg et al, , 1995, the field trial described by Francois et al (1991) and Francois (1995) was conducted in a desert area under conditions of low humidity, desiccating winds, and high temperatures which increased transpiration and undoubtedly reduced root pressure. As a result, calcium distribution to shoot organs may have been strongly affected, and calcium requirement of the inner bracts was not met.…”

Section: Effects Of Salinity On Calcium-related Disorders In Vegetatimentioning

confidence: 99%

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Salinity–mineral nutrient relations in horticultural crops

Grattan

Grieve

1998

Scientia Horticulturae

1,192

738

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“…The responses of plant species may differ according to the salinising system (Grattan and Grieve, 1999). Numerous studies have shown that there are reductions in K + uptake, due to competition, in Na-salt stressed plants (Mor and Marchanda, 1992;Graifenberg et al, 1995). Other studies have shown that K + may be preferentially acquired and transported against a strong Na + concentration gradient.…”

Section: Introductionmentioning

confidence: 99%

K+/Na+ soil-plant interactions during low salt stress and their role in osmotic adjustment in faba beans

Kamel

El-Tayeb

2004

Span. j. agric. res.

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This work examines the responses of faba beans to the external K+/Na+ ratio, the role of inorganic ions Na+, K+, Ca2+, Mg2+, Cl-, H3PO4 and H2SO4, the role of organic solutes, amino acids, soluble proteins and soluble sugars. The plants were treated with 25 mM solutions of NaCl and KCl at 0, 0.425, 1.134, 2.55 and 6.8 K+/Na+ ratios. The different organs of treated plants showed different responses. Leaves were dependent on K+, Na+, Ca2+ and Cl- to readjust their osmotic pressure and decrease their Mg2+ content. Stems were dependent on Na+, Ca2+ and Cl- while roots were dependent on Mg2+ more than other organs. Leaves and stems increased their H3PO4 contents with the increase in external K+. Soluble sugars played the most important role, as organic solutes, in osmotic readjustment. With the increase in external K+ the dependence of roots on soluble sugars decreased. The increase in external K+ increased the leavesamino acid and soluble protein contents.

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Allocation of Na, Cl, K and Ca within plant tissues in globe artichoke (Cynara scolimus L.) under saline-sodic conditions

Cited by 33 publications

References 11 publications

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Salinity–mineral nutrient relations in horticultural crops

K+/Na+ soil-plant interactions during low salt stress and their role in osmotic adjustment in faba beans

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