Selenium alleviates chromium toxicity by preventing oxidative stress in cabbage (Brassica campestris L. ssp. Pekinensis) leaves

Qing, Xuejiao; Zhao, Xiaohu; Hu, Chengxiao; Wang, Peng; Zhang, Ying; Zhang, Xuan; Wang, Pengcheng; Shi, Hanzhi; Fen, Jia; Qu, Chanjuan

doi:10.1016/j.ecoenv.2015.01.026

Cited by 99 publications

(55 citation statements)

References 42 publications

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“…5 and 6). Our results were in line with the findings of Qing et al (2015) who reported that Se(IV) did not affect Cr translocation and uptake by cabbage leaves, but increased Cr content by 20% at least. Se possibly combined with Cd, Hg and Ag and formed Se-metal complexes, which alleviated their toxicity to plants (Shanker et al, 1996;Sasakura and T. Suzuki, 1998;Belzile et al, 2006;Fargasova et al, 2006;Feng et al, 2013).…”

Section: Discussionsupporting

confidence: 83%

“…Most studies focus on the role of Se in decreasing translocation and uptake of heavy metals in plants, but little information has been obtained on Se effect on phytoremediation in heavy metals in macrophytes. Qing et al (2015) found that Se(IV) could protect plant from Cr stress through increasing antioxidants activity but did not affect Cr translocation in cabbage leaves. Besides, Se supply promoted As and Al uptake by Pteris vittata L. (Srivastava et al, 2009) and ryegrass (Cartes et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Brassinosteroid and Selenium on Uptake and Accumulation of Chromium in Yellow Flag (Iris pseudacorus)

Xu¹,

Yu²,

Xie³

et al. 2017

IJAB

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Se (Se(IV) or Se(VI)) for 2 weeks. Then seedlings with or without IP induction (60 mg Fe 2+ L -1 for 3 days) were exposed to 5 mg L -1 hexavalent chromium [Cr(VI)] for 1 week. The results showed that Cr reduced Fe accumulation and uptake by yellow flag with or without IP; however, this effect was significantly neutralized by Br, but not by Se. IP significantly enhanced Cr accumulation in DCB extract and the whole yellow flag seedling, and increased Cr content by 36%. Br24 and Br28 significantly enhanced Cr accumulation and uptake by yellow flag and increased Cr enrichment by 36 and 51% in the absence of IP, and 7 and 21% in the presence of IP, respectively. Se(IV) markedly improved Cr accumulation in the root, but Cr accumulation and uptake in the shoot and DCB extract were not affected by Se(IV) and Se(VI). Our study suggests that Br24 and Br28 can alleviate Fe loss caused by Cr stress and increase Cr accumulation and uptake by yellow flag seedlings.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Effect of Brassinosteroid and Selenium on Uptake and Accumulation of Chromium in Yellow Flag (Iris pseudacorus)

Xu¹,

Yu²,

Xie³

et al. 2017

IJAB

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“…On the other hand, Cd content in both root and shoot was significantly increased with Se foliar application. Reports have shown that proper doses of Se can protect plants against the damage caused by heavy metals/metalloids and decrease its uptake and accumulation in the plant tissues, including Cd [49,50], Pb [51,52], Cr [53], Ni [54], Hg [55], Cu [56], As [57], and Sb [58]. The mechanisms of heavy metal detoxification by Se might be related to the inhibition of uptake and translocation of heavy metals from the roots to aboveground and/or the speciation transformation to nontoxic species.…”

Section: Discussionmentioning

confidence: 99%

Can Selenium and Molybdenum Restrain Cadmium Toxicity to Pollen Grains in Brassica napus?

Ismael

Elyamine

Zhao

et al. 2018

IJMS

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Cadmium (Cd) is highly toxic, even at very low concentrations, to both animals and plants. Pollen is extremely sensitive to heavy metal pollutants; however, less attention has been paid to the protection of this vital part under heavy metal stress. A pot experiment was designed to investigate the effect of foliar application of Se (1 mg/L) and Mo (0.3 mg/L) either alone or in combination on their absorption, translocation, and their impact on Cd uptake and its further distribution in Brassica napus, as well as the impact of these fertilizers on the pollen grains morphology, viability, and germination rate in B. napus under Cd stress. Foliar application of either Se or Mo could counteract Cd toxicity and increase the plant biomass, while combined application of Se and Mo solutions on B. napus has no significant promotional effect on plant root and stem, but reduces the seeds’ weight by 10–11%. Se and Mo have decreased the accumulated Cd in seeds by 6.8% and 9.7%, respectively. Microscopic studies, SEM, and pollen viability tests demonstrated that pollen grains could be negatively affected by Cd, thus disturbing the plant fertility. Se and Mo foliar application could reduce the toxic symptoms in pollen grains when the one or the other was sprayed alone on plants. In an in vitro pollen germination test, 500 μM Cd stress could strongly inhibit the pollen germination rate to less than 2.5%, however, when Se (10 μM) or Mo (1.0 μM) was added to the germination medium, the rate increased, reaching 66.2% and 39.4%, respectively. At the molecular level, Se and Mo could greatly affect the expression levels of some genes related to Cd uptake by roots (IRT1), Cd transport (HMA2 and HMA4), Cd sequestration in plant vacuoles (HMA3), and the final Cd distribution in plant tissue at the physiological level (PCS1).

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“…Since the increase in the concentration/activity of antioxidants was already described (as a defense mechanism to maintain redox balance in cells), it is difficult to interpret data obtained under both Se+metal presence. For example, Wang et al (2014) and Qing et al (2015) found that metal stress (Me) induced a decrease in SOD activities (due to a damage of the protein structure), whereas Se addition stimulated an increase in the activity of these enzymes. However, Ghosh et al (2013) suggested an opposite tendency: an increase in SOD activity at Me (As) application and its decrease in Se+Me presence.…”

Section: Heavy Metal Stressmentioning

confidence: 99%

Involvement of Selenium in Protective Mechanisms of Plants under Environmental Stress Conditions – Review

Sieprawska¹,

Kornaś²,

Filek³

2015

Acta Biologica Cracoviensia S. Botanica

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In recent years there has been growing interest in selenium (Se) as an important micronutrient not only for animals and humans but also for plants. In particular, its protective effect in plants exposed to stress conditions has been suggested. In spite of many studies, the mechanism of Se action is not fully understood. In this review, possible ways of interaction of Se with stress factors leading to optimal growth and development of plants are presented. As the majority of experiments have focused on the effects of Se application under stress conditions induced by heavy metals, special attention is paid to the results obtained in such studies. Changes of physiological and biochemical properties of plant cells, with particular regard to the influence of Se on the activation of enzymatic and non-enzymatic antioxidants under this stress, are summarized. Experiments in which Se was used in some other environmental stresses (drought, UV, cold and high temperature) are also cited. On the basis of the presented literature it is suggested that a positive effect of Se depends on both its doses and on chosen plant genotypes and is mainly connected with activation of antioxidative defense in plant cells.

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Selenium alleviates chromium toxicity by preventing oxidative stress in cabbage (Brassica campestris L. ssp. Pekinensis) leaves

Cited by 99 publications

References 42 publications

Effect of Brassinosteroid and Selenium on Uptake and Accumulation of Chromium in Yellow Flag (Iris pseudacorus)

Effect of Brassinosteroid and Selenium on Uptake and Accumulation of Chromium in Yellow Flag (Iris pseudacorus)

Can Selenium and Molybdenum Restrain Cadmium Toxicity to Pollen Grains in Brassica napus?

Involvement of Selenium in Protective Mechanisms of Plants under Environmental Stress Conditions – Review

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