Rhizosphere Bacteria Enhance Selenium Accumulation and Volatilization by Indian Mustard1

Souza, Mark P. de; Chu, D. T.-H.; Zhao, May; Zayed, Adel; Ruzin, Steven E.; Schichnes, Denise; Terry, Norman

doi:10.1104/pp.119.2.565

Cited by 214 publications

(106 citation statements)

References 36 publications

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“…Indian mustard plants germinated on Se-containing media from axenic seeds coated with bacteria produced more root hairs and accumulated more Se than plants grown from axenic seeds (de Souza et al, 1999a). However, increased root surface area caused by bacteria cannot solely account for the increased heavy metals accumulation, because bacteria were not involved in the accumulation of other heavy metals.…”

Section: High Surface Area-to-volume Ratiomentioning

confidence: 92%

“…It was revealed that a high proportion of metal resistant bacteria persist in the rhizosphere of the hyperaccumulators Thalaspi caerulescens (Delorme et al, 2001) and Alyssum bertolonii (Mengoni et al, 2001) or Alyssum murale (Abou-Shanab et al, 2003a) grown in soil contaminated with Zn and Ni or Ni, respectively. The presence of rhizobacteria increased concentrations of Zn (Whiting et al, 2001), Ni (Abou-Shanab et al, 2003b) and Se (de Souza et al, 1999a) in T. caerulescens, A. murale and B. juncea, respectively.…”

Section: Plant-growthmentioning

confidence: 99%

“…The use of rhizobacteria in combination with plants is expected to provide high efficiency for phytoremediation (Abou-Shanab et al, 2003a;Whiting et al, 2001). Therefore, the potential and the exact mechanism of rhizobacteria to enhance phytoremediation of soil heavy metals pollution have recently received some attention (de Souza et al, 1999a;Whiting et al, 2001). For example, Burd et al(1998) observed that both the number of Indian mustard seeds that germinated in a nickel-contaminated soil, and the attainable plant size increased by 50%~100% by the addition of K. ascorbata SUD165/26, an associated plant growthpromoting rhizobacteria, to the soil in preliminary field trials, and de Souza et al(1999b) investigated phytoremediation of Se and Hg in constructed wetlands and found that accumulation of Se and Hg were enhanced by rhziobacteria in wetland plant tissues.…”

Section: Phytoremediation Assisted By Soil Rhizobacteriamentioning

confidence: 99%

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Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Jing

2007

J. Zhejiang Univ. - Sci. B

397

159

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Heavy metal pollution of soil is a significant environmental problem and has its negative impact on human health and agriculture. Rhizosphere, as an important interface of soil and plant, plays a significant role in phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes, and therefore, have potential to enhance phytoremediation processes. Phytoremediation strategies with appropriate heavy metal-adapted rhizobacteria have received more and more attention. This article paper reviews some recent advances in effect and significance of rhizobacteria in phytoremediation of heavy metal contaminated soils. There is also a need to improve our understanding of the mechanisms involved in the transfer and mobilization of heavy metals by rhizobacteria and to conduct research on the selection of microbial isolates from rhizosphere of plants growing on heavy metal contaminated soils for specific restoration programmes.

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Section: High Surface Area-to-volume Ratiomentioning

confidence: 92%

Section: Plant-growthmentioning

confidence: 99%

Section: Phytoremediation Assisted By Soil Rhizobacteriamentioning

confidence: 99%

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Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Jing

2007

J. Zhejiang Univ. - Sci. B

397

159

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“…Microbially enhanced uptake of metals by plants has been observed for various plants, microorganisms, and metals (20)(21)(22)(23)(24)(25)(26)(27)(28)(29). Farinati et al (28,29) grew A. halleri in hydroponic cultures, which they inoculated with an "extracted" rhizosphere microbial community.…”

Section: Discussionmentioning

confidence: 99%

“…As soil microorganisms are known to affect plant growth (17) and the mobility of nutrients, metals, and contaminants in soils (18), phytoremediation research increasingly focuses on the complex interplay of the plant with the soil microbial community (17,19). Several studies have previously shown that soil microorganisms can promote the accumulation of various metals in different plant species (20)(21)(22)(23)(24)(25)(26)(27)(28)(29). Most of these studies focused on specific groups of microorganisms or were performed with soil extracts in artificial cultivation systems under laboratory conditions (hydroponics cultures).…”

mentioning

confidence: 99%

Rhizosphere Microbial Community Composition Affects Cadmium and Zinc Uptake by the Metal-Hyperaccumulating Plant Arabidopsis halleri

Muehe

Weigold

Adaktylou

et al. 2015

Appl Environ Microbiol

126

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The remediation of metal-contaminated soils by phytoextraction depends on plant growth and plant metal accessibility. Soil microorganisms can affect the accumulation of metals by plants either by directly or indirectly stimulating plant growth and activity or by (im)mobilizing and/or complexing metals. Understanding the intricate interplay of metal-accumulating plants with their rhizosphere microbiome is an important step toward the application and optimization of phytoremediation. We compared the effects of a "native" and a strongly disturbed (gamma-irradiated) soil microbial communities on cadmium and zinc accumulation by the plant Arabidopsis halleri in soil microcosm experiments. A. halleri accumulated 100% more cadmium and 15% more zinc when grown on the untreated than on the gamma-irradiated soil. Gamma irradiation affected neither plant growth nor the 1 M HCl-extractable metal content of the soil. However, it strongly altered the soil microbial community composition and overall cell numbers. Pyrosequencing of 16S rRNA gene amplicons of DNA extracted from rhizosphere samples of A. halleri identified microbial taxa (Lysobacter, Streptomyces, Agromyces, Nitrospira, "Candidatus Chloracidobacterium") of higher relative sequence abundance in the rhizospheres of A. halleri plants grown on untreated than on gamma-irradiated soil, leading to hypotheses on their potential effect on plant metal uptake. However, further experimental evidence is required, and wherefore we discuss different mechanisms of interaction of A. halleri with its rhizosphere microbiome that might have directly or indirectly affected plant metal accumulation. Deciphering the complex interactions between A. halleri and individual microbial taxa will help to further develop soil metal phytoextraction as an efficient and sustainable remediation strategy. E levated metal concentrations in agricultural soils decrease the yield and quality of crops. One of these metals is cadmium (Cd), which is present in the waste materials and waters of many industries (1) and in phosphate fertilizers used in agriculture (2, 3). Besides causing a decrease in crop yield (4), Cd is also a risk to human health if larger quantities (Ͼ2.5 g kg Ϫ1 body weight week Ϫ1 , according to the EFSA [5]) are consumed (6-8). To preserve crop yield and quality, sustainable biotechnologies are urgently needed to relieve agricultural soils of metal contaminants. One promising soil remediation technology is phytoremediation-the use of plants for removing inorganic and organic contaminants from soils (9-11). Phytoremediation is attractive, as it is sustainable and relatively inexpensive compared to other soil cleanup strategies. So far, it has rarely been employed on the field scale (12) due to its low efficiency, slow progress, and the need to develop individual implementation strategies depending on the field site conditions and plant type.Arabidopsis halleri has been studied as a model plant for Cd as well as zinc (Zn) hyperaccumulation in order to apply the plant for phytoremediati...

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Biological Remediation of Selenium in Soil and Water

Borah

Sen

Sarma³

et al. 2021

Handbook of Assisted and Amendment: Enhanced Sustainable Remediation Technology

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Rhizosphere Bacteria Enhance Selenium Accumulation and Volatilization by Indian Mustard1

Cited by 214 publications

References 36 publications

Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Rhizosphere Microbial Community Composition Affects Cadmium and Zinc Uptake by the Metal-Hyperaccumulating Plant Arabidopsis halleri

Biological Remediation of Selenium in Soil and Water

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