Phosphorus-deficiency reduces aluminium toxicity by altering uptake and metabolism of root zone carbon dioxide

Ward, Caroline L; Kleinert, Aleysia; Scortecci, Kátia Castanho; Benedito, Vagner A.; Valentine, Alex J.

doi:10.1016/j.jplph.2010.08.005

Cited by 24 publications

(21 citation statements)

References 49 publications

(55 reference statements)

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“…Únicamente la presencia de Al+H presentó correlación positiva, significativa con el contenido de P (r = 0,40, P = 0,03), independientemente del nivel de pH. Según Ward et al (2011) el ortofosfato (Pi) puede provenir de fosfatos de Al +3 en suelos ácidos, el cual puede quedar disponible para la planta con la exudación de ácidos orgánicos por parte de las raíces.…”

Section: Niveles De Disponibilidad Y Correlaciones Entre Elementosunclassified

Diagnóstico de la fertilidad química de los suelos de los municipios de Granada y Silvania para la producción de uchuva en Cundinamarca

Roveda

Peñaranda

Ramírez

et al. 2013

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A B S T R A C TAdequate plant nutrition is essential to get high crop yields and good export quality for the cape gooseberry. In order to characterize the chemical fertility of soils of cape gooseberry producing areas in Cundinamarca, samples were taken in two major producing municipalities, Granada and Sylvania. To this end, we selected 30 farms for soil sampling and subsequent chemical characterization and determination of the nutrient content available to plants. The two municipalities were compared to determine the feasibility of general soil management recommendations, or zone specific ones. Significant differences were found between the two municipalities, especially for organic matter content, but in general, a serious cationic nutrient unbalance and extreme soil acidity were noticed, so management of soil fertility with technical criteria is required. Moreover, the high level of the micronutrients Zn and Mn found in the soils could reduce crop performance. Principal component analysis was done to produce coherent recommendations by zone that should be adjusted at the level of the farms.Keywords: cation exchange capacity, principal component analysis, soil organic matter, exchangeable acidity 2 R E S U M E N La nutrición de las plantas de uchuva es determinante para obtener un alto rendimiento del cultivo y garantizar el nivel de calidad del producto para exportación. Con el fin de caracterizar la fertilidad química de los suelos de las zonas productoras de uchuva en Cundinamarca, se realizó un muestreo en dos de los principales municipios productores, como son Granada y Silvania. Para tal fin se seleccionaron 30 fincas en las cuales se realizó el muestreo de suelos y la posterior caracterización química y su relación con el contenido de nutrientes disponibles para las plantas. Se hizo la comparación de municipios con el fin de determinar la conveniencia de un manejo similar o, en caso contrario, específico por zona. Se encontraron diferencias significativas entre los dos municipios, relacionadas especialmente con el contenido de materia orgánica en el suelo, pero además se observaron serios problemas de desbalance de cationes y alta acidez, que requieren una planificación adecuada de la fertilización. Además, los altos niveles de micronutrientes Mn y Cu pueden ser limitantes para el cultivo de uchuva. Se analizaron los componentes principales asociados a la fertilidad de los suelos y se hicieron recomendaciones generales por zona que deben ajustarse a nivel de finca.Palabras clave: capacidad de intercambio catiónico, análisis de componentes principales, materia orgánica del suelo, acidez intercambiable I N T R o d U C C I ó N El cultivo de la uchuva en Colombia como producto de exportación, tiene ventajas importantes en competitividad y calidad. A nivel nacional se desarrolla en los departamentos de Cundinamarca, Boyacá y Antioquia, principalmente. El principal país de destino es Holanda en Europa. En el año 2011, se exportaron 6.941 t de fruta fresca (Agronet, 2012).Para garantizar la sostenibilidad de ...

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Section: Niveles De Disponibilidad Y Correlaciones Entre Elementosunclassified

Diagnóstico de la fertilidad química de los suelos de los municipios de Granada y Silvania para la producción de uchuva en Cundinamarca

Roveda

Peñaranda

Ramírez

et al. 2013

CTA

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“…In wheat, P application even aggravated the Al toxicity , although the mechanism for this phenomenon is unknown. In tomato (Solanum lycopersicum), P deficiency reduced Al toxicity by enhancing organic acid synthesis and exudation (Ward et al 2011). These inconsistencies in P-associated alleviation of Al toxicity may be attributed to different culture methods (hydroponic vs soil culture), different treatment methods (pretreatment with P vs co-presence of Al and P), different plant species, different treatment concentrations of Al and P and so on.…”

Section: Introductionmentioning

confidence: 99%

Effect of in planta phosphorus on aluminum-induced inhibition of root elongation in wheat

et al. 2015

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Aims Both aluminum (Al) toxicity and phosphorus (P) deficiency are limiting factors of crop production on acid soils. Although Al-P interaction has been extensively studied, the results are controversial. The aim of this study is to investigate the effect of in planta P on Alinduced inhibition of root elongation in wheat (Triticum aestivum L.). Methods Roots of wheat (cv. Atlas 66) with different internal P concentrations were prepared by two methods; split-root and re-rooting in a hydroponic solution using three different P levels (0, 25 and 250 μM) to avoid direct precipitation of Al-P in the solution. Al toxicity was evaluated by root elongation inhibition and callose induction. The Al and P concentrations in the root tips were also compared among different treatments.Results Both split-root and re-rooting methods generated roots with different P concentrations in the tips when exposed to different P levels. Lower P in the root tips resulted in less Al-induced inhibition of the root elongation, less callose content and less Al accumulation, while higher root P caused a higher Al-induced inhibition of the root elongation, increased callose content and Al accumulation in the root tips. Furthermore, Al in the root cell sap was not altered by different P concentrations, but Al in the root cell wall was increased with increasing in planta P concentrations. Conclusions Al toxicity in wheat is associated with P in the root cell wall; lower root P enhanced Al tolerance, while higher root P aggravated Al toxicity in wheat.

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“…Phosphorus is crucial to the maintenance of phosphorylation reactions during carbon assimilation (Lawlor and Cornic, 2002;Thomas et al, 2006;Ward et al, 2011) as well as in assisting with other photosynthetic parameters such as g s and WUE (Naeem et al, 2010). The lowest concentration of P was found in this study in seedlings grown up on 25% I, which may have directly influenced the results recorded in A. emarginata (Schltdl.)…”

Section: Discussionmentioning

confidence: 50%

The Effect of the Ionic Strength of Nutrient Solution on Gas Exchange, Ionic Concentration and Leaf Biomass ofAnnona emarginata(Schltdl.) H. Rainer Variety ‘Terra-Fria’ Seedlings

Báron

Ferreira

Boaro

et al. 2015

Journal of Plant Nutrition

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The present study aimed to test the hypothesis that different levels of the availability of mineral nutrients from Hoagland and Arnon"s (1950) nutrient solution no. 2 affect the photosynthesis, ionic concentration and biomass production in seedlings of Annona emarginata (Schltdl.) H.Rainer variety "terra-fria". Seedlings were grown in a hydroponic setting with 100% ionic strength and with ionic strength reduced to 75%, 50%, and 25%. Ionic strengths intermediate resulted in higher rates of carbon net assimilation and plants grown under these conditions increased biomass as well ionic concentrations of calcium, magnesium and sulphur. The "terraDownloaded by [New York University] at 11:00 11 June 2015 ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2fria" plants with nutrient solutions of 50% and 75% ionic strength exhibited higher ionic concentrations, instantaneous carboxylation efficiency and biomass production. It can be concluded that the "terra-fria" does not require the maximum mineral nutrients availability from Hoagland and Arnon"s (1950) to achieve high primary productivity and intermediate ionic strengths can even reduce the time required for rootstock formation.

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Phosphorus-deficiency reduces aluminium toxicity by altering uptake and metabolism of root zone carbon dioxide

Cited by 24 publications

References 49 publications

Diagnóstico de la fertilidad química de los suelos de los municipios de Granada y Silvania para la producción de uchuva en Cundinamarca

Diagnóstico de la fertilidad química de los suelos de los municipios de Granada y Silvania para la producción de uchuva en Cundinamarca

Effect of in planta phosphorus on aluminum-induced inhibition of root elongation in wheat

The Effect of the Ionic Strength of Nutrient Solution on Gas Exchange, Ionic Concentration and Leaf Biomass ofAnnona emarginata(Schltdl.) H. Rainer Variety ‘Terra-Fria’ Seedlings

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