Zinc in plants

Broadley, Martin R.; White, Philip J.; Hammond, John P.; Zelko, Ivan; Lee, Alexander

doi:10.1111/j.1469-8137.2007.01996.x

Cited by 1,724 publications

(1,259 citation statements)

References 266 publications

(357 reference statements)

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“…Os efeitos visíveis da exposição a altas doses de Zn são, em geral, descritos como redução severa do crescimento, da clorose e da atrofia foliar (Cunha et al, 2008). De acordo com a Agência de Proteção Ambiental do EUA (King, 1996) (Clemens et al, 2002;Broadley, 2007).…”

Section: Resultsunclassified

Tolerância de mamona a zinco avaliada por fluorescência de clorofila e nutrição das plantas

Marques

Nascimento

2014

Rev. Bras. Ciênc. Solo

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A medida da fluorescência de clorofila pode ser uma ferramenta útil para detectar alterações no aparato fotossintético das plantas. Considerando que a detecção precoce da contaminação de zinco em plantas é essencial para o monitoramento ambiental, este trabalho objetivou avaliar o estresse causado por esse nutriente em plantas de mamona (Ricinus communis), utilizando a técnica da fluorescência de clorofila. As alterações provocadas pelo Zn nos pigmentos fotossintéticos e na composição mineral das plantas foram também estudadas. Plantas de mamona foram cultivadas durante 28 dias em solução nutritiva com cinco doses de Zn (100, 200, 300, 400 e 600 µmol L -1 ), além de um controle contendo 0,380 µmol L -1 do elemento. A fluorescência de clorofila detectou alterações temporais promovidas pelo acúmulo de Zn nas plantas e evidenciou-se útil na detecção precoce da toxicidade do elemento em plantas de mamona. Apesar do declínio no seu estado nutricional, a mamona apresentou relativa tolerância à toxicidade a doses elevadas de Zn, indicando ser essa espécie uma alternativa atraente para revegetação ou remediação de áreas contaminadas.Termos de indexação: Ricinus communis, elemento-traço, poluição do solo, fotossíntese.

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Section: Resultsunclassified

Tolerância de mamona a zinco avaliada por fluorescência de clorofila e nutrição das plantas

Marques

Nascimento

2014

Rev. Bras. Ciênc. Solo

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“…It is also used for galvanization process (Jiao et al, 2004). The hydrolysis of Pb 2+ , under progressively increasing alkaline conditions, forms Pb(OH) + , Pb(OH) 2 (aqueous), Pb(OH) 3 -and other species, including several polynuclear species (Broadley et al, 2007). Metallic lead does occur in nature, but it is rare.…”

Section: Resultsmentioning

confidence: 99%

Association of trace metals with various sedimentary phases in dam reservoirs

Karbassi

Torabi

Ghazban

et al. 2011

Int. J. Environ. Sci. Technol.

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ABSTRACT:In the present study sediment and water samples collected from Kowsar Dam reservoir in Kohkiluye and Boyerahmad Province, southwest of Iran, are subjected to bulk digestion and chemical partitioning. The concentrations of nickel, lead, zinc, copper, cobalt, cadmium, manganese and iron in water and bed sediment were determined by atomic absorption spectrometry. The concentrations of metals bounded to five sedimentary phases were estimated. On this basis, the proportions of natural and anthropogenic elements were calculated.The anthropogenic portion of elements are as follows: zinc (96 %)> cobalt (88 %)> iron (78 %)> magnesium (78 %)> nickel (78 %)> copper (66 %)> lead (63 %)> cadmium (59 %). The results show sediment contamination by nickel, cadmium and lead, according to the world aquatic sediments and mean earth crust values. Manganese and copper have strong association with organic matter and are of high portion of sulfide bounded ions. Finally, The degree of sediment contamination was evaluated using enrichment factor, geo-accumulation index (Igeo) and pollution index (IPoll). The sediments were identified to be of high cadmium and lead pollution index. The pattern of pollution intensity according to enrichment factor is as follows; manganese (1.25) < copper (1.63) < zinc (1.93) < cobalt (2.35) < nickel (3.83) < lead (12.63) < cadmium (78.32). Cluster analysis was performed in order to assess heavy metal interactions between water and sediment. Accordingly, nickel, cadmium and copper are earth originated. Zinc, copper and manganese are dominated by pH. All the elemental concentrations in water and sediment are correlated except for sedimental copper.

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“…Zn toxicity in crops is less widespread than Zn deficiency (Broadley et al 2007). In general, plant growth and quality are reduced owing to Zn inadequacy in soil.…”

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Toxic elements and energy accumulation in topsoil and plants of spruce ecosystems

Kuklová¹,

Hniličková²,

Hnilička³

et al. 2017

PLANT SOIL ENVIRON

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The objective of this research was to evaluate trends and relationships of energy and toxic elements accumulation in A-horizon (the depth of 0–5 cm) of soils and in selected plants of the hemioligotrophic (Dystric Cambisols) and oligotrophic (Skeletic-Rustic Podzols) spruce ecosystems situated along transect (750–1110 m a.s.l.) in the NP Slovenský raj (Eastern Slovakia). The results showed that EU limit values of risk elements in agricultural soils were exceeded for Cu and Cd at the altitude of 750–760 m a.s.l., and in case of Cd also above 1000 m a.s.l. Relationship between energy and toxic elements in soils revealed that with an increasing amount of energy, contents of Zn and Cu significantly declined with altitude (r > –0.5 or r > –0.9). The background value of Cu was exceeded in all plants, that of Zn for Dryopteris filix-mas and Rubus idaeus. Furthermore, excessive accumulation of Cd was revealed by all plants. Cu contents in soils were dominant in determining Cu uptake for Vaccinium myrtillus (r > 0.5); Zn and Cd for V. myrtillus (r > 0.6), D. filix-mas (r > 0.5 or r > 0.8) and Fagus sylvatica (r > –0.8 or r > –0.5); Zn also for R. idaeus species (r > 0.4). The soil-plant transfer coefficients higher than 1 hinted R. idaeus on the plots at the altitude of 960 m a.s.l. (Cd 1.1, Cu 1.2, Zn 3.1), which appears as an excellent native indicator of forest ecosystem contamination.

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Zinc in plants

Cited by 1,724 publications

References 266 publications

Tolerância de mamona a zinco avaliada por fluorescência de clorofila e nutrição das plantas

Tolerância de mamona a zinco avaliada por fluorescência de clorofila e nutrição das plantas

Association of trace metals with various sedimentary phases in dam reservoirs

Toxic elements and energy accumulation in topsoil and plants of spruce ecosystems

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