Phytotoxic effects of nickel on yield and concentration of macro- and micro-nutrients in sunflower (Helianthus annuus L.) achenes

Ahmad, Muhammad Sajid Aqeel; Ashraf, Muhammad; Hussain, Mumtaz

doi:10.1016/j.jhazmat.2010.10.045

Cited by 69 publications

(32 citation statements)

References 47 publications

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“…Sin embargo, los metales pesados también perjudican el crecimiento y rendimiento del girasol. El Ni (Ahmad et al, 2011), Cr (Fozia et al, 2008) y Cd (Di Cagno et al, 1999) afectan el crecimiento de la raíz, del tallo y reducen el rendimiento. Estos efectos están acompañados por una menor concentración foliar de elementos esenciales y una mayor acumulación del metal pesado.…”

Section: Metales Pesados Y Nutriciónunclassified

Fluorescencia como indicador de estrés en <i>Helianthus annuus</i> L. Una revisión

Jiménez-Suancha

Álvarado

Balaguera-López

2015

Rev. Colomb. Cienc. Hortic.

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Plantulas de tomate.Foto: Álvarez-Herrera. RESUMENEl girasol es una Asteraceae con alto potencial como planta de corte. Esta planta está expuesta a una amplia fluctuación de condiciones ambientales como luz, temperatura, suministro de agua y nutrientes. Estas condiciones pueden generar estrés sobre las plantas. El girasol presenta resistencia a la sequía, bajas y altas temperaturas. Los efectos del estrés dependen de la intensidad y de la etapa fenológica en que se presente. La fluorescencia puede ser empleada como herramienta para obtener información acerca de la influencia del estrés sobre el estado fisiológico del aparato fotosintético de las plantas y su respuesta será indicadora del daño o alteración en él. El objetivo de la presente revisión es exponer resultados de investigaciones científicas sobre los diferentes tipos de estrés evaluados en Helianthus annuus y la forma como ha sido empleada la fluorescencia como un indicador de dicho estrés. Contribuyendo así a ampliar la información disponible sobre esta importante especie.

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Section: Metales Pesados Y Nutriciónunclassified

Fluorescencia como indicador de estrés en <i>Helianthus annuus</i> L. Una revisión

Jiménez-Suancha

Álvarado

Balaguera-López

2015

Rev. Colomb. Cienc. Hortic.

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“…Excess Ni also affects nutrient absorption by roots (Rahman et al 2005 ) . Ahmad et al ( 2011 ) assessed the effect of Ni on the accumulation of macronutrients (K, Ca, and Mg) and micronutrients (Zn, Mn, Fe, and Cu) in different parts of sunfl ower ( Helianthus annuus ). They showed that Ni stress substantially decreases all macronutrients and micronutrients in sunfl ower leaves and achenes.…”

Section: Nickelmentioning

confidence: 99%

“…Ni has similar chemical characteristics as other mineral nutrients, such as Ca, Mg, Mn, Fe, Cu, and Zn. In addition, Ni is absorbed and transported by the same transport system as that for some other micronutrients, such as Cu and Zn (Ahmad et al 2011 ) . As a result, high levels of Ni may inhibit the absorption of these nutrients.…”

Section: Nickelmentioning

confidence: 99%

Uptake of Mineral Elements During Abiotic Stress

Duman

2011

Abiotic Stress Responses in Plants

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Several environmental factors infl uence the mineral uptake of plants, including pH, redox potential, and the presence of xenobiotics as well as the temperature and salinity. Changes in environmental conditions affect the biological and physiological response of plants. Most important targets of plants are maintained by the ion homeostasis and mineral uptake in stress conditions. Plants may use the different procedures to regulate homeostasis. In general, Na salt stress decreases the levels of cationic nutrients such as K, Ca, and Mg due to competition for ion transport sites. Drought and salinity stress are physiologically related and the tolerance mechanisms overlap. Metals can interfere with mineral nutrition and change the concentration and composition of plant nutrients. Besides, metals may also alter the conformation of proteins, including transporters, or regulator proteins. Herbicides may disrupt the function and integrity of the cell membrane, and signifi cant ion losses can occur. However, molecular mechanisms and genetic basis of interactions between abiotic stress and mineral uptake is lacking. Thus, future studies will focus on these aspects. In this chapter, the effects of some common stressors, such as salinity, drought, metals, herbicides, and on nutrient uptake are elucidated.

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“…Among the contaminations heavy metals Pb, Cd, Hg, As, Ni, and Se are emerging problems for all over worlds. (Ahmad and Ashraf, 2011;Ahmad et al, 2011a). Cadmium (Cd) is one of the most common toxic metals present in the environment that induces various toxic effects in plants even at low doses.…”

Section: Introductionmentioning

confidence: 99%

Phyto-toxic Effect of Heavy Metal (CdCl2) on Seed Germination, Seedling Growth and Antioxidant Defence Metabolism in Wheat (Triticum aestivum L.) Variety HUW-234

Siddique¹,

Dubey²

2017

IJBSM

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The experiments were conducted to assess the phytotoxic effect of heavy metal (CdCl 2). The responses of treatment effect comprises the variables germination %, length (cm), fresh weight and dry weight (mg) of shoot and root, root/shoot ratio, seed vigour index (SVI), reducing sugar, non reducing sugar, total sugar (mg g-1), chlorophyll content (mg g-1), cadmium uptake (ppm g-1), proline content (µg g-1), relative water content (RWC%) and superoxide dismutase (SOD, unit×10 2 g-1 f. weight min-1). CdCl 2 treated sets showed reduction in percent of seed germination, length (cm), fresh weight and dry weight (mg) of shoot and root, root/shoot ratio, seed vigour index (SVI) with increasing the concentrations of CdCl 2 in comparison to control set. A reduction in breakdown of reducing sugar to non reducing sugar and total sugar is correlated with decline of amylase activity along with increasing the concentrations of CdCl 2 in comparison to control one. The chlorophyll content was found in decreasing trend with increasing the concentrations of CdCl 2 in comparison to control. However, the uptake of cadmium was increased with increasing the concentrations up to 100 ppm CdCl 2. The proline content and superoxide Dismutase (SOD) was found to be high in higher concentrations of CdCl 2 treated set and while the enhancement was started since initial concentration CdCl 2 (i.e., 25 ppm). However, the least amount was recorded in control set. On the contrary, RWC% was found to be reduced with increasing the concentrations of CdCl 2 up to 100 ppm even though the maximum RWC% was measured in control set.

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Phytotoxic effects of nickel on yield and concentration of macro- and micro-nutrients in sunflower (Helianthus annuus L.) achenes

Cited by 69 publications

References 47 publications

Fluorescencia como indicador de estrés en <i>Helianthus annuus</i> L. Una revisión

Fluorescencia como indicador de estrés en <i>Helianthus annuus</i> L. Una revisión

Uptake of Mineral Elements During Abiotic Stress

Phyto-toxic Effect of Heavy Metal (CdCl2) on Seed Germination, Seedling Growth and Antioxidant Defence Metabolism in Wheat (Triticum aestivum L.) Variety HUW-234

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