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Xue, Tao; Hartikainen, Helinä; Piironen, Vieno

doi:10.1023/a:1013369804867

Cited by 441 publications

(131 citation statements)

References 30 publications

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“…For instances, Ca can maintain the membrane integrity (Kirkby and Pilbeam 1984); Mg appears to provide a protective function in maintaining plant tissue integrity (Wilkinson et al 1990); K can provide a correct ionic environment in cytoplasm for metabolic processes, thereafter maintaining the normal osmotic pressure in cells and inhibiting the production of reactive oxygen species (ROS) (Leigh and Wyn Jones 1984;Ismail 2005). Since high level exposure of Se can cause the enhancement of membrane permeability, damage the membrane integrity and result in high oxidative stress in plants (Hartikainen et al 2000;Xue et al 2001), the enhanced uptake of Ca, Mg and K by Chinese brake fern might indicate the involvements of these three elements in the tolerance mechanism of Se, particularly in its roots where Se mainly stored (Fig. 1a, b).…”

Section: Uptake Of Essential Elements Under Se Exposure In Chinese Brmentioning

confidence: 99%

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Effects of Se on the uptake of essential elements in Pteris vittata L.

Feng

Wei

et al. 2009

Plant Soil

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Selenium has been proven to be an antioxidant in plants at low dosages. To understand better the mechanisms of Se toxicity and benefit to plants, more investigations about effects of Se on the uptake of essential elements in plants would be desirable. In this study, hydroponic (nutrient solution culture) and pot (soil culture) experiments were simultaneously conducted to investigate the effects of Se on the uptake and distribution of essential elements in Pteris vittata. L (Chinese brake fern), an arsenic (As)-hyperaccumulator and a selenium (Se)-accumulator. Chinese brake fern took up much more Se in nutrient solution culture than in soil culture, with the highest Se content recorded as 1,573 mg kg −1 in the roots, demonstrating remarkable tolerance to Se. In soil culture, Chinese brake fern also accumulated high content of Se, with the highest content measured as 81 mg kg −1 and 233 mg kg

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Section: Uptake Of Essential Elements Under Se Exposure In Chinese Brmentioning

confidence: 99%

“…The accumulation of organic Se species in plants may enhance ethylene production, increase membrane permeability and influence the uptake of essential elements, such as K (Xue et al 2001).…”

mentioning

confidence: 99%

Effects of Se on the uptake of essential elements in Pteris vittata L.

Feng

Wei

et al. 2009

Plant Soil

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“…These results suggest that the diminished action of oxygen species could explain the protective role of in Al-stressed plants. The results point out to Se as exerting a dual effect on seedling growth process: at low concentration, it could act as an antioxidant enhancing growth of Al-inhibited seedlings, whereas at higher concentration it could act as a growth-inhibiting agent [9,24]. In fact, selenomethionine at high concentration inhibited seedling growth, as shown in [25], and several Se-soluble compounds elicited ethylene production by seeds and seedlings of Townsville stylo [14].…”

Section: Discussionmentioning

confidence: 89%

A dual role of selenium in the growth control of seedlings of Stylosanthes humilis

Ribeiro¹,

Mapeli²,

Antunes³

et al. 2011

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The growth of seedlings of Townsville sytlo (Stylosanthes humilis H.B.K.) is inhibited by aluminium (Al) ions, their elongation being recovered with sodium selenate at 1.0 µM. Methyl viologen and hydrogen peroxide, reactive oxygen species (ROS)-generating compounds, also inhibited seedling elongation and again growth was relieved by selenate. Selenate, thus, seemed to be operating as a ROS quencher, since N-acetylcysteine (NAC), an antioxidant compound, also stimulated largely the growth of Al-inhibited seedlings. At a higher concentration (0.1 mM), however, selenate inhibited seedling growth and elongation was recovered by NAC. Ethylene production by selenate plus NAC-treated seedlings was very higher and thus the gaseous hormone was not responsible for the seedling growth inhibition caused by selenate. Hence, it seems that at high levels selenate operates as a ROS-generating compound whose effects were counteracted by NAC. It can be deduced that, at low concentration, selenate behaves as a ROS quencher and at high level as a ROS-promoting species.

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“…Others [44] suggested that Se is an antioxidant or it activates protective mechanisms, which alleviate oxidative stress in the chloroplasts. The spontaneous disproportion of superoxide to H 2 O 2 may explain the slightly improved tolerance of photosynthesis [45].…”

Section: Resultsmentioning

confidence: 99%

Alleviation Effect of Selenium on Manganese Stress of Plants

Kleiber

Krzesiński

Przygocka-Cyna

et al. 2018

Ecological Chemistry and Engineering S

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Mn, as Fe, Zn, Cu and Ni is a heavy metal and also a necessary element all the living organisms. Excessive Mn nutrition causes a strong oxidative stress. The aim of the studies was to determination the effect of Se treatment (as sodium selenite Na2O4Se3) to alleviate the Mn stress of plants. Because of its sensitivity to oxidative stress induced by excessive concentrations of Mn a model plant was lettuce (Lactuca sativa L. 'Sunny'). ). In all the combination were also tested different foliar sprays (distilled water and a 0.005% Se solution). Plants grown under conditions described above take up and transported Se from nutrient solutions into their leaves with a significant reduction of Mn concentration and changes in the plant nutrient status. With the increase in the concentrations of Se clearly narrowed quantitative relations in the leaves between this element and micro-metallic. Increasing Se levels in nutrient solution has a positive influence on the growth of plants, but Se foliar treatment generally decreases plant yield. The study shown that Se application may lead to alleviation of Mn stress of plants, with simultaneous reduce in Mn concentration in leaves -which may be of practical importance also in the cultivation of more economically important species.

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Cited by 441 publications

References 30 publications

Effects of Se on the uptake of essential elements in Pteris vittata L.

Effects of Se on the uptake of essential elements in Pteris vittata L.

A dual role of selenium in the growth control of seedlings of Stylosanthes humilis

Alleviation Effect of Selenium on Manganese Stress of Plants

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