Characterization of heavy metal-resistant endophytic bacteria from rape (Brassica napus) roots and their potential in promoting the growth and lead accumulation of rape

Sheng, Xiafang; Juanjuan, Xia; Jiang, Chunyu; He, Linyan; Meng, Qin

doi:10.1016/j.envpol.2008.04.007

Cited by 508 publications

(178 citation statements)

References 42 publications

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“…Lead concentration in shoots of N. domestica reached 578 ppm (Fig. 4b), a value comparable to those reported for the hyperaccumulators Brassica juncea and B. napus (Lim et al 2004, Sheng et al 2008. It should be also pointed out that high pH values measured in all plots of the experimental site (Tab.…”

Section: Phytoextraction Potential Of Twelve Ornamental Shrub Speciessupporting

confidence: 53%

Preliminary results of the tolerance to inorganic contaminants and phytoextraction potential of twelve ornamental shrub species tested on an experimental contaminated site

Vincent¹,

Shang²,

Zhang³

et al. 2018

iForest

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In urban areas of China, several plant species are commonly used for ornamental purposes. Many of these plants have demonstrated a good capacity to resist these varied urban stresses, and it would be relevant to verify whether they can be grown on polluted sites and demonstrate some phytoremediation potential. Twelve ornamental shrub species were chosen to be tested for tolerance to inorganic contaminants and capacity to absorb and concentrate heavy metals in their aerial parts. A large split-plot trial comprising 20 plots was set up, and soil was spiked with different metals (Cu, Pb and Zn). In general, all twelve shrub species performed well regardless of the treatment. Two Hibiscus species, H. mutabilis and H. syriacus "Hamabo" were particularly productive. In terms of capacity to uptake metals, two of the best performing species were Spiraea japonica, for copper, and Nandina domestica, for lead. Bioconcentration and transfer factors were low. This could be related to weak development of the root systems in these recently established plants. Species with high yield, such as the two Hibiscus species, presented more interesting values in terms of quantity of metal extracted, and could eventually be recommended for decontamination of soils polluted by inorganics.

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Section: Phytoextraction Potential Of Twelve Ornamental Shrub Speciessupporting

confidence: 53%

Preliminary results of the tolerance to inorganic contaminants and phytoextraction potential of twelve ornamental shrub species tested on an experimental contaminated site

Vincent¹,

Shang²,

Zhang³

et al. 2018

iForest

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“…Bacterial strains with high metal-tolerance have been isolated from hyperaccumulator rhizospheres (Abou-Shanab et al 2007a;Abou-Shanab et al 2003b;Idris et al 2004;Pal et al 2007), of which some have been shown to contribute to plant growth and, occasionally, to plant metal accumulation (AbouShanab et al 2008;Abou-Shanab et al 2006;Li et al 2007;Rajkumar and Freitas 2008a, b;Sheng et al 2008;Weyens et al 2009b). A recent book chapter (Sessitsch and Puschenreiter 2008) highlighted the importance of research on bacteria associated with plant hyperaccumulators to develop new strategies for improving current phytoremediation techniques.…”

Section: Bacterial Communities In Serpentine Soilmentioning

confidence: 99%

“…In fact, metal availability, metal uptake and phytotoxicity for the plant are the main limiting factors for the application of phytoextraction (Weyens et al 2009a, b). Exploitation of plant-associated bacteria could be a promising strategy to improve the efficiency of phytoextraction both via enrichment of the bacterial community present in a The name of the genetic determinant, the organisms or the source of isolation, the genomic location of the determinant and the reference of the original isolation are reported planta (Abou-Shanab et al 2007b;Li et al 2007;Sheng et al 2008;Mastretta et al 2009), or through metabolic engineering and re-inoculation of suitable strains to improve metal availability (e.g. due to the synthesis of natural chelators and acidifying components), and reduce phytotoxicity (e.g.…”

Section: Perspectivesmentioning

confidence: 99%

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Plants as extreme environments? Ni-resistant bacteria and Ni-hyperaccumulators of serpentine flora

2009

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During recent years there has been an increasing interest in the bacterial communities occurring in unusual, often extreme, environments. On serpentine outcrops around the world, a high diversity of plant species showing the peculiar features of metal hyperaccumulation is present. These metal hyperaccumulators have received much attention for their potential biotechnological exploitation in phytoremediation processes, but also as unusual, extreme habitats for the associated bacterial flora, which could reveal novel details concerning bacterial adaptation. This paper will briefly focus on the research topics that have been addressed to date on bacteria associated with serpentine plants and aims to provide a state of the art and to present possible future directions for research which could lead to new insights on microbial adaptation and evolution, and potentially applied in technologies for sustainable use and remediation of contaminated land.

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“…IAA production IAA production was measured according to Sheng et al (2008). Briefly, 1 ml cell suspension obtained from bacterial culture grown in MSM medium with l-tryptophan (0.5 mg/ml) was transferred into a tube and mixed vigorously with 2 ml of Salkowski's reagent (Gordon and Weber 1951).…”

Section: Acc Deaminase Activitymentioning

confidence: 99%

Characterization of endophytic bacteria associated with rose plant (Rosa damascena trigintipeta) during flowering stage and their plant growth promoting traits

El-Deeb

Bazaid

Gherbawy

et al. 2012

Journal of Plant Interactions

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Little is known about the bacterial communities associated with the rose plants inhabiting dry desert ecosystems. The aim of this study was to isolate and characterize endophytic bacteria from different organs of rose plant. Endophytic bacteria were observed in healthy roots, stems, leaves, and flowers of rose plant, with a significantly higher density in roots, followed by stems, leaves, and petals. A total of 38 bacterial endophytes were isolated and are closely related phylogenetically to Acetobacter, Acinetobacter, Methylococcus, Bacillus, Micrococcus, Planococcus by 16S rRNA sequence analysis. Six endophytic bacteria were found to produce IAA, solubilize Ca 3 (PO 4 ) 2 and produce siderophore. The six endophytic bacteria all had the capacity to produce hydrolytic enzyme such as cellulase, xylanase, pectinase, amylase, protease, lipase, and chitinase, but difference existed among these isolates.

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Characterization of heavy metal-resistant endophytic bacteria from rape (Brassica napus) roots and their potential in promoting the growth and lead accumulation of rape

Cited by 508 publications

References 42 publications

Preliminary results of the tolerance to inorganic contaminants and phytoextraction potential of twelve ornamental shrub species tested on an experimental contaminated site

Preliminary results of the tolerance to inorganic contaminants and phytoextraction potential of twelve ornamental shrub species tested on an experimental contaminated site

Plants as extreme environments? Ni-resistant bacteria and Ni-hyperaccumulators of serpentine flora

Characterization of endophytic bacteria associated with rose plant (Rosa damascena trigintipeta) during flowering stage and their plant growth promoting traits

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