Lead-induced phytotoxicity mechanism involved in seed germination and seedling growth of wheat (Triticum aestivum L.)

Yang, Yingli; Wei, Xueling; Jin, Lu; You, Jing; Wang, Wenrui; Shi, Ruxia

doi:10.1016/j.ecoenv.2010.08.041

Cited by 79 publications

(27 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The growth of legume plants grown on Pb ore tailings was reported to be drastically affected [28]. Pb also inhibited root and shoot growth in tobacco [48], and wheat [7]. Similarly, in the present study, the root and shoot growth of cultivar K6 and cultivar K9 were inhibited by Pb-stress and the reduction was found to be concentration dependent.…”

Section: Discussionsupporting

confidence: 53%

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars

Nareshkumar¹,

Veeranagamallaiah²,

Pandurangaiah³

et al. 2015

View full text Add to dashboard Cite

Lead (Pb) is an important environmental pollutant extremely toxic to plants and other living organisms including humans. To assess Pb phytotoxicity, a pot culture experiment was carried out using two groundnut cultivars (Arachis hypogaea L. cultivar K6 and cultivar K9) on plant growth, ROS levels, lipid peroxidation, and antioxidant metabolism using biochemical, histochemical methods. Plants were grown in pots for 14 days, in the botanic garden, and subjected to Pb-stress (0, 100, 200, 400 and 800 ppm) by adding Pb (NO3)2 solution and further allowed to grow for 10 days. The results showed that cultivar K6 registered lower Pb accumulation than cultivar K9, however, localization of Pb was greater in roots than leaves in both groundnut cultivars. The Pb-stress results in an increase in free radicals (O2• − and H2O2) generation in both groundnut cultivars, but more significantly in cultivar K9 than K6. Pb-stress also caused significant changes in the rate of peroxidation as shown in the levels of malondialdehyde (MDA) content in roots and leaves of both groundnut cultivars. Free proline, ascorbic acid (AsA) and non-protein thiol (NP-SH) contents were increased in cultivar K6 due to Pb-stress, but less in cultivar K9. Pb treated plants showed increased levels of antioxidant enzymes such as superoxide dismutase (SOD), guaiacol peroxidase (GPX), ascorbate peroxidase (APX) glutathione reductase (GR) and glutathione Stransferase (GST). Isozyme band intensities of SOD, GPX and APX were more consistent with the respective changes in antioxidative enzyme activities. These results indicate that cultivar K6 possesses greater tolerance potential for Pb toxicity than cultivar K9.

show abstract

Section: Discussionsupporting

confidence: 53%

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars

Nareshkumar¹,

Veeranagamallaiah²,

Pandurangaiah³

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The growth of legume plants grown on Pb ore tailings was reported to be drastically affected [19]. Pb also inhibited root and shoot growth in tobacco [20] and wheat [21]. Similarly, in the present study, the root and shoot growth of cultivar K6 and cultivar K9 were inhibited by Pb stress and the reduction was found to be concentration dependent (table 1).…”

Section: Effect Of Pb Stress On Plant Growthsupporting

confidence: 54%

“…In wheat seedlings, concentrations of total chlorophyll content decreased significantly in the presence of Pb in the soil, but this response varied with the concentration of exogenous Pb [21]. After expose to 800 ppm, the reduction was about 22.7% in cultivar K6 and 38.5% in cultivar K9, compared to respective controls (table 1).…”

Section: Effect Of Pb-stress On Chlorophyll Contentmentioning

confidence: 92%

Effect of Pb-Stress on Growth and Mineral Status of Two Groundnut (Arachis hypogaea L.) Cultivars

Nareshkumar¹,

Krishnappa²,

Kirankumar³

et al. 2014

JPS

View full text Add to dashboard Cite

Abstract:Heavy metal pollution of air and agricultural soils is one of the most important ecological problems on world scale.Among the heavy metals, lead (Pb) is one of the common environmental pollutants. To investigate Pb effects on nutrient uptake, two groundnut (Arachis hypogaea L.) cultivars (cultivar K6 and cultivar K9) were grown in pot cultures and stressed with lead nitrate (Pb(NO 3 ) 2 ) at four concentrations (100, 200, 400 and 800 ppm). Pb is accumulated in roots and leaf tissues in dose dependent manner in both groundnut cultivars, which resulted in reduced root and shoot growth and lower uptake of all mineral ions tested. The content of mineral ions such as Ca, Na, Mg, Co, Cu, Ni, Zn and Mn reduced in root and leaf tissues of both cultivars due to Pb stress. But the reduction in mineral ion content was less in cultivar K6 than in cultivar K9. The deficiency of mineral nutrients correlates in a strong decrease in the contents of total chlorophyll, and anthocyanin in both cultivars, but these effects are less pronounced in cultivar K6 than in cultivar K9.

show abstract

“…They found that roots were inhibited by 70%, while shoots were reduced only by 50% in the presence of Zn.The inhibition of roots and shoots elongation caused by heavy metals can be due to their influence on cell division (Davies et al, 1991;Hargemeyer, Breckle, 1996), or their effect on cell wall elasticity and metabolic activities (Naseer et al, 2001). As we know, roots are the first part of the plant that comes in touch with contamination, they are more sensitive to toxicity by metals than shoots (Araujo, Monteiro, 2005;Shah et al, 2010;Yang et al, 2010;Yusuf et al, 2011). This sensibility reduced per consequence of the root/shoot ratio.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Rasafi

Nouri

Bouda

et al. 2016

Ekológia (Bratislava)

View full text Add to dashboard Cite

El Rasafi T., Nouri M., Bouda S., Haddioui A.: The effect of Cd, Zn and Fe on seed germination and early seedling growth of wheat and bean. Ekológia (Bratislava), Vol. 35, No. 3, p. 213-223, 2016. This study was conducted to evaluate the effect of metals on wheat and bean species. The method uses seed germination and early seedling growth of these plants in the presence of various levels (10, 50, 100, 250, 500, 750 and 1000 mg/L) of Cadmium (Cd), Iron (Fe) and Zinc (Zn). The inhibition caused by these metals was depending on the concentration used, the metal itself and the plant species. The species had reduced seed germination, root and shoot lengths, tolerance index and percentphyto-toxicity with increasing concentrations of metals. Cadmium was determined to be the most inhibitory metal on these parameters. This metal affected significantly the germination, root and shoot length of the species tested, as well as the tolerance index and percentphytotoxicity starting from 50 mg Cd/l. Under the Iron stress, in general, the inhibition of germination and root length of wheat was reduced from 500 mg Fe/l. The results showed also that the inhibitory effect of increase of Zn levels was seen in root, shoot and tolerance indices. The findings also revealed that the metal toxicity was as follow: Cd > Fe > Zn. Regarding species, the results showed that bean seemed to be more tolerant to the increase of the three metals than wheat.

show abstract

Lead-induced phytotoxicity mechanism involved in seed germination and seedling growth of wheat (Triticum aestivum L.)

Cited by 79 publications

References 36 publications

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars

Effect of Pb-Stress on Growth and Mineral Status of Two Groundnut (Arachis hypogaea L.) Cultivars

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Contact Info

Product

Resources

About

Lead-induced phytotoxicity mechanism involved in seed germination and seedling growth of wheat (Triticum aestivum L.)

Cited by 79 publications

References 36 publications

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (&lt;i&gt;Arachis hypogaea&lt;/i&gt; L.) Cultivars

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (&lt;i&gt;Arachis hypogaea&lt;/i&gt; L.) Cultivars

Effect of Pb-Stress on Growth and Mineral Status of Two Groundnut (Arachis hypogaea L.) Cultivars

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Contact Info

Product

Resources

About

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars

Pb-Stress Induced Oxidative Stress Caused Alterations in Antioxidant Efficacy in Two Groundnut (<i>Arachis hypogaea</i> L.) Cultivars