Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage

Souza, Sarah Caroline Ribeiro de; Andrade, Sara Adrián López de; Souza, Lucas Anjos; Schiavinato, Marlene Aparecida

doi:10.1016/j.jenvman.2012.06.015

Cited by 84 publications

(25 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Huang and Cunningham (1996) showed significant differences in the uptake and translocation of Pb 2+ among Triticum aestivum, Thlaspi rotundifolium , and Thlaspi caerulescens. Mimosa caesalpiniaefolia was more tolerant to high Pb 2+ concentrations in soil than Erythrina speciosa and Schizolobium parahyba (de Souza et al, 2012). Huang and Cunningham (1996) found that some dicot species can accumulate significantly higher concentrations of Pb 2+ in the roots than some monocot species.…”

Section: Introductionmentioning

confidence: 93%

Magnesium Alleviates Adverse Effects of Lead on Growth, Photosynthesis, and Ultrastructural Alterations of Torreya grandis Seedlings

et al. 2016

View full text Add to dashboard Cite

Magnesium (Mg2+) has been shown to reduce the physiological and biochemical stress in plants caused by heavy metals. To date our understanding of how Mg2+ ameliorates the adverse effects of heavy metals in plants is scarce. The potential effect of Mg2+ on lead (Pb2+) toxicity in plants has not yet been studied. This study was designed to clarify the mechanism of Mg2+-induced alleviation of lead (Pb2+) toxicity. Torreya grandis (T. grandis) seedlings were grown in substrate contaminated with 0, 700 and 1400 mg Pb2+ per kg-1 and with or without the addition of 1040 mg kg-1 Mg2+. Growth parameters, concentrations of Pb2+ and Mg2+ in the plants’ shoots and roots, photosynthetic pigment, gas exchange parameters, the maximum quantum efficiency (Fv/Fm), root oxidative activity, ultrastructure of chloroplasts and root growth were determined to analyze the effect of different Pb2+ concentrations on the seedlings as well as the potential ameliorating effect of Mg2+ on the Pb2+ induced toxicity. All measurements were tested by a one-way ANOVA for the effects of treatments. The growth of T. grandis seedlings cultivated in soils treated with 1400 mg kg-1 Pb2+ was significantly reduced compared with that of plants cultivated in soils treated with 0 or 700 mg kg-1 Pb2+. The addition of 1040 mg kg-1 Mg2+ improved the growth of the Pb2+-stressed seedlings, which was accompanied by increased chlorophyll content, the net photosynthetic rate and Fv/Fm, and enhanced chloroplasts development. In addition, the application of Mg2+ induced plants to accumulate five times higher concentrations of Pb2+ in the roots and to absorb and translocate four times higher concentrations of Mg2+ to the shoots than those without Mg2+ application. Furthermore, Mg2+ addition increased root growth and oxidative activity, and protected the root ultrastructure. To the best of our knowledge, our study is the first report on the mechanism of Mg2+-induced alleviation of Pb2+ toxicity. The generated results may have important implications for understanding the physiological interactions between heavy metals and plants, and for successful management of T. grandis plantations grown on soils contaminated with Pb2+.

show abstract

Section: Introductionmentioning

confidence: 93%

Magnesium Alleviates Adverse Effects of Lead on Growth, Photosynthesis, and Ultrastructural Alterations of Torreya grandis Seedlings

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Hence, S. multijuga can be classified as moderately tolerant to Zn up to the dose of 388.47 mg kg -1 , while E. crista-galli up to 529.23 mg kg -1 . Sesbania virgata has capacity to tolerate and stabilize high Zn contents (Branzini et al, 2012), while Erythrina speciosa showed tolerance of 65% with addition of 1,000 mg kg -1 of Pb to the soil (Souza et al, 2012). Thus, species of the same family and botanical genus have different responses to the contamination with heavy metals.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, young plants are more sensitive, compared to adult plants, to the adverse conditions imposed by metals (Souza et al, 2012). However, tree species have different responses to soil contamination (Souza et al, 2012;Gomes et al, 2013), reinforcing the need for studies with tree species in soils contaminated by Zn.…”

Section: Introductionmentioning

confidence: 99%

Growth, tolerance and zinc accumulation in Senna multijuga and Erythrina crista-galli seedlings

Scheid

Marco

Grolli

et al. 2017

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Zinc (Zn) is a micronutrient that is reaching toxic levels in the soil, with the intensification of agricultural and industrial activities. The objective of this study was to evaluate the growth, accumulation and tolerance of Erythrina crista-galli and Senna multijuga seedlings in soil with addition of increasing Zn levels. The study was conducted in a greenhouse for 120 days, using a completely randomized design in a 2 x 6 factorial arrangement, corresponding to two tree species (S. multijuga and E. crista-galli) and six doses of zinc in the soil (0, 200, 400, 600, 800 and 1000 mg kg-1) with six replicates. E. crista-galli and S. multijuga seedlings decreased root and shoot dry weight with increasing Zn doses. E. crista-galli and S. multijuga have low Zn translocation index and are capable to phytostabilize Zn in the roots. E. crista-galli had greater tolerance to Zn compared with S. multijuga. The species have potential for Zn phytostabilization programs in contaminated soil.

show abstract

“…S. elongatus PCC 7942 cells were harvested by centrifugation at 5,000 × g for 10 min and incubated with or without SeO4 2− . Lipid peroxidation level was measured in terms of 2-thiobarbituric acid (TBA) reactive metabolite, mainly MDA content (Ribeiro de Souza et al, 2012). O 2•-were measured by monitoring the nitrite formation from hydroxyl amine (Yang et al, 2008).…”

Section: Measurement Of Ros Generationmentioning

confidence: 99%

Antioxidant modulation in response to selenium induced oxidative stress in unicellular cyanobacterium Synechococcus elongatus PCC 7942

Saraf¹,

Sao²,

Bagchi³

2017

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage

Cited by 84 publications

References 55 publications

Magnesium Alleviates Adverse Effects of Lead on Growth, Photosynthesis, and Ultrastructural Alterations of Torreya grandis Seedlings

Magnesium Alleviates Adverse Effects of Lead on Growth, Photosynthesis, and Ultrastructural Alterations of Torreya grandis Seedlings

Growth, tolerance and zinc accumulation in Senna multijuga and Erythrina crista-galli seedlings

Antioxidant modulation in response to selenium induced oxidative stress in unicellular cyanobacterium Synechococcus elongatus PCC 7942

Contact Info

Product

Resources

About