The effect of chromium and aluminum on growth, root morphology, photosynthetic parameters and transpiration of the two barley cultivars

Ali, Shafaqat; Zeng, Fanrong; Qiu, Le Feng; Zhang, Ge

doi:10.1007/s10535-011-0041-7

Cited by 58 publications

(21 citation statements)

References 43 publications

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“…In this study, the F v /F m ratios of control A. elatius and S. transcaspicus were higher than 0.8 while it was less than 0.8 in exposed A. elatius and S. transcaspicus, indicating that in the presence of metals the two plants suffering photosynthetic stress. Our finding is in agreement with other observations reported in other plants growing on metal-polluted soils (Ali et al 2011;Lu et al 2011;Liu et al 2012). The decrease in F v /F m may be a result of an increase in protective non-radiative energy dissipation (non-photochemical quenching) associated with a regulated decrease in photochemistry and photosynthetic rate, photo-damage of PSII centers or both (Mechri et al 2011).…”

Section: Discussionsupporting

confidence: 93%

Behavior of Native SpeciesArrhenatherum Elatius(Poaceae) andSonchus Transcaspicus(Asteraceae) Exposed to a Heavy Metal-Polluted Field: Plant Metal Concentration, Phytotoxicity, and Detoxification Responses

Lü

et al. 2013

International Journal of Phytoremediation

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The application of vegetation cover for the phytomanagement of heavy metal-polluted soils needs prior investigation on the suitability of plant species. In this study, behaviors of Arrhenatherum elatius and Sonchus transcaspicus, two native perennial grasses that currently grow in a mine tailing, were investigated through plant metal concentration, phytotoxicity and their detoxification responses. Both of the species accumulated Ni, Cu, Cd, Co, Mn, Pb, Cr, and Zn in shoots far below criterion concentration as a hyperaccumulators; thus, neither of them were found to be hyperaccumulators. A. elatius accumulated metals in roots and then in shoots, on the contrary, in S. transcaspicus metals were preferentially accumulated in shoots. Plants exposure to such metals resulted in oxidative stress in the considered organs as indicated by the changes in chlorophyll fluorescence, chlorophyll contents, malondialdehyde (MDA) levels and antioxidative enzyme activities. A. elatius seemed to be more affected by metal-induced oxidative stress than S. transcaspicus. Correspondingly, S. transcaspicus showed a greater capacity to adapt to metal-induced oxidative stress, depending on more effective antioxidative defense mechanisms to protect itself from oxidative damage. These findings allowed us to conclude that both of these plant species could be suitable for the phytostabilization of metal-polluted soils.

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Section: Discussionsupporting

confidence: 93%

Behavior of Native SpeciesArrhenatherum Elatius(Poaceae) andSonchus Transcaspicus(Asteraceae) Exposed to a Heavy Metal-Polluted Field: Plant Metal Concentration, Phytotoxicity, and Detoxification Responses

Lü

et al. 2013

International Journal of Phytoremediation

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“…Addition of GSH into solution recovered the Cr damages and improved the plant biomass by up-regulating the plant defense machinery (GSH contents itself also) as well as the reduction in metal uptake. Recently, GSH-ascorbate cycle is well known to combat the super oxides (H 2 O 2 , OH − and O 2 − ), by doing so it deteriorates the metal stress level on plant metabolism [43]. …”

Section: Discussionmentioning

confidence: 99%

Comparative transcriptome profiling of two Brassica napus cultivars under chromium toxicity and its alleviation by reduced glutathione

et al. 2016

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BackgroundChromium (Cr) being multifarious industrial used element, is considered a potential environmental threat. Cr found to be a prospective water and soil pollutant, and thus it is a current area of concern. Oilseed rape (Brassica napus L.) is well known as a major source of edible oil around the globe. Due to its higher growth, larger biomass and capability to uptake toxic materials B. napus is considered a potential candidate plant against unfavorable conditions. To date, no study has been done that described the Cr and GSH mechanism at RNA-Seq level.ResultsBoth digital gene expression (DGE) and transcriptome profile analysis (TPA) approaches had opened new insights to uncover the several number of genes related to Cr stress and GSH alleviating mechanism in two leading cultivars (ZS 758 and Zheda 622) of B. napus plants. Data showed that Cr inhibited KEGG pathways i.e. stilbenoid, diarlyheptanoid and gingerol biosynthesis; limonene and pentose degradation and glutathione metabolism in ZS 758; and ribosome and glucosinolate biosynthesis in Zheda-622. On the other hand, vitamin B6, tryptophan, sulfur, nitrogen and fructose and manose metabolisms were induced in ZS 758, and zeatin biosynthesis, linoleic acid metabolism, arginine and proline metabolism, and alanine, asparate and glutamate metabolism pathways in Zheda 622. Cr increased the TFs that were related to hydralase activity, antioxidant activity, catalytic activity phosphatase and pyrophosphatase activity in ZS 758, and vitamin binding and oxidoreductase activity in Zheda 622. Cr also up-regulated the promising proteins related to intracellular membrane bounded organelles, nitrile hyrdatase activity, cytoskeleton protein binding and stress response. It also uncovered, a novel Cr-responsive protein (CL2535.Contig1_All) that was statistically increased as compared to control and GSH treated plants. Exogenously applied GSH successfully not only recovered the changes in metabolic pathways but also induced cysteine and methionine metabolism in ZS 758 and ubiquinone and other terpenoid-quinone biosynthesis pathways in Zheda 622. Furthermore, GSH increased the level of TFs i.e. the gene expression of antioxidant and catalytic activities, iron ion binding and hydrolase activity as compared with Cr. Moreover, results pointed out a novel GSH responsive protein (CL827.Contig3_All) whose expression was found to be significantly increased when compared than Cr stress. Results further delineated that GSH induced TFs such as glutathione disulphide oxidoreducatse and aminoacyl-tRNA ligase activity, and beta glucosidase activity in ZS 758. Similarly in Zheda 622, GSH induced the TFs for instance DNA binding and protein dimerization activity. GSH also highlighted the proteins that were involved in transportation, photosynthesis process, RNA polymerase activity, and against the metal toxicity. These results indicated that cultivar ZS 758 had better metabolism and showed higher tolerance against Cr toxicity.ConclusionThe responses of ZS 758 and Zheda 622 differed consider...

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“…Inhibition of root elongation is the major symptom of Al toxicity to plants under acidic conditions (Ali et al 2011). The barley seedlings exhibited much shorter root length in acidic RETS with ample Al (850 mg/kg).…”

Section: Discussionmentioning

confidence: 99%

Exploiting of honey-associated Bacillus strains as plant-growth promoting bacteria for enhancing barley growth in rare earth tailings

Zhang

Luan²,

Wei

et al. 2015

Ann Microbiol

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In the coming decades, exploitation of plant growth promoting bacteria (PGPB) will be a major trend in sustainable agriculture. Except for rhizobacteria, the bacteria inhabiting the non-rhizosphere could be considered the supplementary microbial source to exploit PGPB. Rare earth tailings soil (RETS) has caused a serious threat to sustainable agriculture due to excessive aluminum (Al) toxicity under acidic condition (pH<5.5). The efficient restoration strategy is to combine phytoremediation and PGPB. The aim of this work was to screen honey-associated Bacillus strains as PGPB to improve barley (Hordeum vulgare L.) growth in RETS. Nine Bacillus strains from honey were initially selected with higher tolerance to acid (pH 4.0) and Al stress (1.5 mM). Only six strains among these nine strains could produce ACC deaminase. The nine strains were all efficient in dissolving phosphate, producing organic acid, siderophore, and IAA. The nine strains could promote barley seedlings growth mainly via production of organic acid, ACC deaminase. However, this growth promotion was weakened slightly by siderophore and phosphate solubilization under acidic condition. On the whole, inoculation with the nine strains obviously enhanced barley seedlings growth in RETS. Thus, the nine honeyassociated Bacillus strains could be exploited as PGPB to enhance barley growth in RETS.

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The effect of chromium and aluminum on growth, root morphology, photosynthetic parameters and transpiration of the two barley cultivars

Cited by 58 publications

References 43 publications

Behavior of Native SpeciesArrhenatherum Elatius(Poaceae) andSonchus Transcaspicus(Asteraceae) Exposed to a Heavy Metal-Polluted Field: Plant Metal Concentration, Phytotoxicity, and Detoxification Responses

Behavior of Native SpeciesArrhenatherum Elatius(Poaceae) andSonchus Transcaspicus(Asteraceae) Exposed to a Heavy Metal-Polluted Field: Plant Metal Concentration, Phytotoxicity, and Detoxification Responses

Comparative transcriptome profiling of two Brassica napus cultivars under chromium toxicity and its alleviation by reduced glutathione

Exploiting of honey-associated Bacillus strains as plant-growth promoting bacteria for enhancing barley growth in rare earth tailings

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