Interactive effects of cadmium and carbon nanotubes on the growth and metal accumulation in a halophyte Spartina alterniflora (Poaceae)

Chai, Minwei; Shi, Fuchen; Li, Ruili; Liu, Limin; Liu, Yue; Liu, Fuchun

doi:10.1007/s10725-013-9817-4

Cited by 59 publications

(24 citation statements)

References 49 publications

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“…Spartina alterniflora is a promising halophyte that can be widely used for sewage treatment, fodder, bioactive material, and heavy metal adsorption . Previous studies have demonstrated that S. alterniflora not only endures and sequesters most heavy metals (Cd, Cu, Pb) in underground parts but also undergoes osmotic adjustment to reduce its toxicity . In the present study, the growth of S. alterniflora was initially promoted using 100 and 500 μg · g −1 Zn treatments and then inhibited at the highest Zn treatment (1000 μg · g −1 ) (Figs.…”

Section: Discussionmentioning

confidence: 56%

Effects of Zn Stress on Growth, Zn Accumulation, Translocation, and Subcellular Distribution of Spartina alterniflora Loisel

Xiu

Chen

Shi

et al. 2016

CLEAN Soil Air Water

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Research ArticleEffects of Zn Stress on Growth, Zn Accumulation, Translocation, and Subcellular Distribution of Spartina alterniflora Loisel Spartina alterniflora plays an important role in heavy metal phytoremediation of estuary salt marshes. A study quantifying the effects of different Zn concentrations (100, 500, and 1000 mg Á g À1 ) on growth, Zn accumulation, translocation, and subcellular distribution of S. alterniflora was conducted. The results showed that plant height and dry biomass increased under the 100 and 500 mg Á g À1 Zn stress test. The Zn concentration in the same tissues increased with increasing Zn concentration. In addition, the Zn concentrations under the same Zn stress increased in the following order: Fine roots > leaves > stems > rhizomes. For example, it was found that the Zn concentration in fine roots reached up to 60.64 mg Á g À1, and this concentration was significantly higher than in other tissues. However, the highest accumulation was detected in leaves under the 500 mg Á g À1 Zn stress test, regardless of other tissues and Zn treatments. The Zn translocation factor increased with increasing Zn treatment concentrations and reached 1.05 under 1000 mg Á g À1 Zn stress. This result suggests thatZn was easily transported to the shoots of S. alterniflora. Moreover, the cell wall and cytoplasmic supernatant played important roles in Zn stabilization and detoxification. This was a result of Zn mainly distributed in the cell wall and cytoplasmic supernatant but not in cell organelles.

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Section: Discussionmentioning

confidence: 56%

Effects of Zn Stress on Growth, Zn Accumulation, Translocation, and Subcellular Distribution of Spartina alterniflora Loisel

Xiu

Chen

Shi

et al. 2016

CLEAN Soil Air Water

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“…Yuan et al (2011) suggested that single-walled CNTs could stimulate the growth of Arabidopsis Heynhold plant mesophyll cells at the nano priming concentration of 50 µg·ml -1 . Chai et al (2013) also stated that the application of CNTs (800 to 2,400 mg·kg -1 ) reduced the stress resulting from Cd and allowed the recovery of shoot growth, plant height, and water content to their normal level.…”

Section: Discussionmentioning

confidence: 99%

“…The given materials have recently proved to be of advantage in plant sciences and various fields of agriculture as well (Tripathi et al 2011;Wang et al 2012;Chai et al 2013). However, the positive effect of low dosages of multi-walled carbon nanotubes (MWCNTs) on germination and root growth has also been confirmed for Raphanus sativus Linnaeus, Brassica napus Linnaeus, Lolium perenne Linnaeus, Cucumis sativus Linnaeus, and Zea mays Linnaeus (Lin, Xing 2007;Larue et al 2012).…”

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Increasing drought resistance of Alnus subcordata C.A. Mey. seeds using a nano priming technique with multi-walled carbon nanotubes

Rahimi¹,

Kartoolinejad²,

Nourmohammadi³

et al. 2016

J. For. Sci.

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ABSTRACT:To evaluate the effects of nano priming on seed germination of Alnus subcordata (Caucasian alder) C.A. von Meyer under drought stress, the present research was conducted using multi-walled carbon nanotubes (MWCNTs; 0, 10, 30, 50, and 100 mg·l -1 ) at 6 levels of drought stress (0, -2, -4, -6, -8, and -10 bar) through a factorial experiment (5 priming levels with 4 replications). After priming, the seeds were placed into a germinator at 21°C. Results revealed that nano priming at the concentration of 100 mg·l -1 led to the highest germination rate and percentage at all levels of drought stress.Also, the highest values of seed vigour index and root and stem lengths and dry weights were observed at nano carbon treatment with 30 mg·l -1 . Considering the obtained results, it was concluded that nano priming could result in boosted resistance of Caucasian alder seeds against drought stress, so that the seed tolerance increased from -4 bar (without nano priming treatment, i.e. reference sample) to -8 bar upon applying 100 mg·l -1 nanotubes. Based on the results of the present research, it is suggested that the seed nano priming technique with MWCNTs can be applied in order to increase the seed and seedling tolerance of other members of the genus Alnus Miller.

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“…Recently, Cd has become one of the most harmful and widespread pollutants in agricultural soils mainly due to industrial emission, application of Cd containing phosphate fertilizers, and sewage sludge and municipal waste disposal (Chai et al 2013). In China, at least 13,330 ha of farmland involved in 11 provinces have been contaminated with varying degrees of Cd (Zhang and Huang 2000).…”

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confidence: 99%

Differences in photosynthesis, yield and grain cadmium accumulation as affected by exogenous cadmium and glutathione in the two rice genotypes

et al. 2014

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Greenhouse pot experiments were conducted using Cd-tolerant (Bing97252) and sensitive (Xiushui63) rice genotypes to investigate genotypic differences in yield, Cd accumulation and photosynthesis at different growth stages in response to different Cd levels and as affected by glutathione (GSH). Yield of the two genotypes were impaired when soil Cd levels higher than 5 mg kg -1 (Cd2), with Xiushui63 being more affected. Application of GSH at seedling, elongation or the both stages significantly increase yield in Bing97252 and at elongation stage in Xiushui63. Cd concentration in leaves showed dose-dependent responses at seedling and elongation stages except Xiushui63 which showed a slight reduction under Cd5 (100 mg kg -1 ) treatment over Cd4 (50 mg kg -1 ). At harvest stage, leaf Cd concentration also increased with Cd levels in both genotypes. Grain Cd concentration showed dose-dependent increase in Xiushui63, but this increase was only found from control to Cd3 (10 mg kg -1 ) treatments in Bing97252. Addition of GSH markedly decreased grain Cd concentration in both genotypes. Regression equations between grain and leaf Cd concentrations at seedling/elongation stage were established, and the calculated critical levels of Cd in leaves at seedling (0.403 mg kg -1 DW) and elongation (0.299 mg kg -1 DW) stages were obtained for safe rice grain production. Net photosynthetic rate and stomatal conductance were not affected at different growth periods under different Cd levels in Bing97252, but significantly reduced at filling stage in Xiushui63 when soil Cd levels up to 50 mg kg -1 . Intercellular CO 2 concentration was significantly reduced during the whole growth period under high soil Cd level except seedling stage in Xiushui63, while the decrease was found in Bing97252 only at seedling stage. Our findings demonstrate that adoption of low Cd accumulation genotype coupled with GSH application provided a promising strategy to reduce grain Cd accumulation for safe food production, especially in slight or moderate Cd polluted soils.

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Interactive effects of cadmium and carbon nanotubes on the growth and metal accumulation in a halophyte Spartina alterniflora (Poaceae)

Cited by 59 publications

References 49 publications

Effects of Zn Stress on Growth, Zn Accumulation, Translocation, and Subcellular Distribution of Spartina alterniflora Loisel

Effects of Zn Stress on Growth, Zn Accumulation, Translocation, and Subcellular Distribution of Spartina alterniflora Loisel

Increasing drought resistance of Alnus subcordata C.A. Mey. seeds using a nano priming technique with multi-walled carbon nanotubes

Differences in photosynthesis, yield and grain cadmium accumulation as affected by exogenous cadmium and glutathione in the two rice genotypes

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