Responses to excess iron in sweet potato: impacts on growth, enzyme activities, mineral concentrations, and anatomy

Adamski, Janete Mariza; Danieloski, Rodrigo; Deuner, Sidnei; Braga, Eugênia Jacira Bolacel; Castro, Luis Antônio Suíta de; Peters, José Antônio

doi:10.1007/s11738-012-0981-3

Cited by 47 publications

(23 citation statements)

References 35 publications

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“…Esses autores observaram efeitos significativos do excesso de Fe sobre a relação parte aérea/raízes somente em concentrações de Fe acima de 1,43 mM e após 60 dias de tratamento. Em Excesso de ferro sobre o crescimento e a composição mineral em Eugenia uniflora L. * Médias seguidas pela mesma letra minúscula entre diferentes concentrações de FeEDTA para o mesmo DAT e pela mesma letra maiúscula entre diferentes DAT para a mesma concentração de FeEDTA não diferem estatisticamente pelo teste Duncan (p<0,05) Figura 3 -Massa seca de folhas, caules e raízes de plantas jovens de Eugenia uniflora, 15, 30 e 45 dias após tratamento (DAT) com diferentes concentrações de FeEDTA batata doce, entretanto, a relação massa seca parte aérea/ raízes aumentou em concentração de Fe de 0,9 mM, mas decresceu em concentração de 4,5 mM (ADAMSKI et al, 2012). Embora os mecanismos que governam a partição da biomassa em plantas ainda sejam bastante limitados (MARSCHNER; KIRKBY;CAKMAK, 1996), esse maior decréscimo na massa foliar em relação à massa radicular causado por Fe em excesso é sugestivo de estar ocorrendo uma interferência no aparato fotossintético destas plantas.…”

Section: Resultsunclassified

Excess iron on growth and mineral composition inEugenia unifloraL.

Jucoski

Cambraia

Ribeiro

et al. 2016

Revista Ciência Agronômica

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Excesso de ferro sobre o crescimento e a composição mineral emEugenia uniflora L. 1Excess iron on growth and mineral composition in Eugenia uniflora L. ABSTRACT -Iron, although an essential micronutrient, when present in excess can cause a reduction in the growth, and hence the productivity, of plants. The aim of this study was to evaluate the absorption, accumulation and distribution of Fe, and its consequences on growth and mineral composition in young plants of Eugenia uniflora L.. The plants were exposed to different concentrations of Fe, 0.045 (control), 1.0 and 2.0 mM, applied in the form of Fe-EDTA in Hoagland's pH 5.0 nutrient solution for 15, 30 and 45 days, when the number of leaves, shoot height, primary root length, dry mass of the roots, stems and leaves, and the levels of chlorophyll, total carotenoids and minerals were evaluated. Plants exposed to the treatments with 1.0 and 2.0 mM Fe showed an increase in levels of the element in the leaves, stem and roots, compared to the control plants, especially after 45 days of exposure. Under that condition, the plants exhibited typical symptoms of Fe toxicity, characterised by leaf bronzing, darkening of the roots, a reduction in the number of leaves, shoot height, length of the main root, dry matter production and the levels of chloroplast pigments. Excess Fe modified biomass partitioning and caused a reduction in the levels of P, Zn, Cu and Mn, especially in the roots. In addition to the direct effect of excess Fe, the resulting nutritional disorder may be associated with restrictive effects on initial vegetative growth in plants of Eugenia uniflora L..

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Section: Resultsunclassified

Excess iron on growth and mineral composition inEugenia unifloraL.

Jucoski

Cambraia

Ribeiro

et al. 2016

Revista Ciência Agronômica

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“…Other parameters were only slightly altered during the plant development. The provision of potato plants (variety ILS19) with 9.0 mM Fe and Hoagland growing medium contributed to an increase in F 0 , F m , and PI (Adamski et al 2012). At the same time, it was found that water scarcity and high light intensity [above 300 µmol(photon) m -2 s -1 ] caused an increase in F 0 and a decrease in F m in potato plants of the Kufri Sindhuri variety (Basu et al 1998).…”

Section: Discussionmentioning

confidence: 99%

Impact of intraspecific competition on photosynthetic apparatus efficiency in potato (Solanum tuberosum) plants

Olechowicz¹,

Chomontowski²,

Olechowicz³

et al. 2018

Photosynt.

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Unfavourable growth conditions significantly determine the yield of crop plants. Intraspecific competition is a condition in which plants compete with each other for environmental resources. An excessive density contributes to increased competition within species, which results in disruption of photosynthesis process. According to this idea, experiments were conducted to investigate the photosynthetic response of potato (Solanum tuberosum) plants to excessive congestion. Two potato varieties of different earliness classes (Vineta and Satina) were used to evaluate the efficiency of the photosynthetic apparatus based on chlorophyll (Chl) fluorescence measurements under stress conditions. Changes in Chl contents of the tested plants were also analysed. In relation to intraspecific competition, we can conclude that the Vineta variety was less sensitive to this stress factor. In contrast, the photosynthetic apparatus of the Satina variety showed less efficient functioning under these conditions. In this study, the application of Chl fluorescence was presented for the first time in order to analyse the effects of intraspecific competition in plants.

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“…Iron is found to be localized inside the different cellular compartments such as chloroplasts, mitochondria, and vacuoles (Jeong and Guerinot 2009;Adamski et al 2012;Vigani et al 2013). It also acts as a redox cofactor in a variety of plant cellular metabolism (Puig et al 2005).…”

Section: Iron (Fe)mentioning

confidence: 99%

“…It also acts as a redox cofactor in a variety of plant cellular metabolism (Puig et al 2005). Iron (Fe) is an unavoidable and one of the most prominent constituent of a number of proteins and enzymes that plays important roles in key metabolic processes, including cellular respiration, oxygen transport, lipid metabolism, the tricarboxylic acid (TCA) cycle, gene regulation, synthesis of metabolic intermediates, and DNA biosynthesis as well as making it essential for photosynthesis and chlorophyll biosynthesis (Jeong and Connolly 2009;Adamski et al 2012). To organize the range of physiological and metabolic function in a convectional manner and to minimize nutritional disorder both the abundance and deficiency of micronutrients should be maintained properly.…”

Section: Iron (Fe)mentioning

confidence: 99%

Micronutrients and their diverse role in agricultural crops: advances and future prospective

et al. 2015

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In plant sciences, the prodigious significance of micronutrient is unavoidable since plant relies primarily on micronutrient as it has profound influence on array of plant activities. Although micronutrients are abundantly present in the soil but plants usually acquire them in relatively trace amounts; hence, regarded as tracer element. B, Cu, Fe, Mn, Zn are such micronutrients required in minute amounts by plants but inexorably play an eminent role in plant growth and development. Plant metabolism, nutrient regulation, reproductive growth, chlorophyll synthesis, production of carbohydrates, fruit and seed development, etc., are such effective functions performed by micronutrients. These tracer elements when present at adequate level, elevate the healthy growth in plant physiological, biochemical and metabolic characteristics while their deficiency promotes abnormal growth in plants. Prevalence of micronutrient deficiency has become more common in recent years and the rate of their reduction has further been increased by the perpetual demands of modern crop cultivars, high soil erosion, etc. On the basis of present existing condition, it is not difficult to conclude that, the regular increment of micronutrient deficiency will be mostly responsible for the remarkable degradation in substantiality of agricultural crops somewhere in near future and so that this issue has now been the subject of intensified research among the breeder, ingenuities and expertise of science. These micronutrients can also be proven toxic when present at accelerated concentrations and such toxicity level endangers the plant growth. Taking this into consideration, the current review unfolds the phenomenal participation of micronutrients in plant sciences and gives a brief overview of the current understanding of main features concerning several micronutrient acquisitions in agricultural crop plants.

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Responses to excess iron in sweet potato: impacts on growth, enzyme activities, mineral concentrations, and anatomy

Cited by 47 publications

References 35 publications

Excess iron on growth and mineral composition inEugenia unifloraL.

Excess iron on growth and mineral composition inEugenia unifloraL.

Impact of intraspecific competition on photosynthetic apparatus efficiency in potato (Solanum tuberosum) plants

Micronutrients and their diverse role in agricultural crops: advances and future prospective

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