Metal removal from and microbial property improvement of a multiple heavy metals contaminated soil by phytoextraction with a cadmium hyperaccumulator Sedum alfredii H.

Yang, Wenhao; Zhang, Taoxiang; Li, Siliang; Ni, Wuzhong

doi:10.1007/s11368-014-0875-7

Cited by 23 publications

(5 citation statements)

References 55 publications

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“…They contribute to ecosystem sustainability due to their cosmopolitan survival, massive efficient genetic pool, catabolic versatility and stress tolerance potential (Singh, 2015 ). Because they are highly sensitive to changes in soil conditions, they have been used to assess soil quality in contaminated soils (Jusselme et al, 2013 ; Yang et al, 2014 ). Recent work indicated that there is a predictive relationship between microbial traits and the ecosystem function of soils (Allison, 2012 ; Graham et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Impacts of dimethyl phthalate on the bacterial community and functions in black soils

Wang

et al. 2015

Front. Microbiol.

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Dimethyl phthalate (DMP), a known endocrine disruptor and one of the phthalate esters (PAEs), is a ubiquitous pollutant. Its impacts on living organisms have aroused great concern. In this study, the impacts of DMP contamination on bacterial communities and functions were tested by using microcosm model in black soils. The results showed that the operational taxonomic unit (OTUs) richness and bacterial diversity were reduced by DMP contamination. The relative percentages of some genera associated with nitrogen metabolism were increased by DMP contamination, while the relative percentages of some other genera that were extremely beneficial to soil health were decreased by DMP contamination. Further, the relative percentages of some genera that possessed the capability to degrade DMP were increased by the DMP treatment at low concentrations (5, 10, and 20 mg/kg), but were decreased by the high concentration DMP treatment (40 mg/kg). Clearly, DMP contamination changed the bacterial community structure and disturbed the metabolic activity and functional diversity of the microbes in black soils. Our results suggest that DMP pollution can alter the metabolism and biodiversity of black soil microorganisms, thereby directly impact fertility and ecosystem functions.

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Section: Introductionmentioning

confidence: 99%

Impacts of dimethyl phthalate on the bacterial community and functions in black soils

Wang

et al. 2015

Front. Microbiol.

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“…Sedum alfredii (Crassulaceae) is a Cd/Zn cohyperaccumulator and Pb accumulator first discovered in regions of Zhejiang province, China, where Pb and Zn are heavily mined (Tian et al, 2010(Tian et al, , 2011aLu et al, 2013). Due to its high Cd/Zn/Pb tolerance and accumulation and its relatively high biomass, this plant species has been used for phytoremediation of soils contaminated with heavy metals throughout China (Wang et al, 2013;Xiao et al, 2013;Lu and Zhang, 2014;Yang et al, 2014). S. alfredii is one of only a few nonbrassica species known to date to have both Cd and Zn hyperaccumulation properties (Krämer, 2010;Cappa and Pilon-Smits, 2014;Pollard et al, 2014), as the two most widely studied hyperaccumulator species-N. caerulescens and A. halleri-are both members of the Brassicaceae family (Verbruggen et al, 2013).…”

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confidence: 99%

Calcium Deficiency Triggers Phloem Remobilization of Cadmium in a Hyperaccumulating Species

et al. 2016

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Understanding cadmium (Cd) accumulation in plants is critical for the development of plant-based strategies for soil remediation and crop safety. Sedum alfredii is a nonbrassica plant species known to hyperaccumulate Cd. The characteristics of Cd uptake, distribution, and retranslocation affected by the Ca status were investigated at cellular levels in S. alfredii Low Ca supply significantly increased Cd contents in shoots of S. alfredii, particularly in the young leaves. Micro x-ray fluorescence images confirmed that sequestration of Cd was greatly enhanced in the young leaves under Ca deficiency stress, with a significant amount of Cd localized in mesophyll cells, compared to the young leaves supplied with high Ca levels. Cd influx into protoplasts isolated from young leaves was significantly inhibited by the addition of Ca channel inhibitors, but not by pre-exposure to Ca deficiency. In stems, the Cd signal in vascular systems under low Ca levels was 10-fold higher than in those treated with higher Ca levels. A detailed investigation of vascular bundles revealed that an extremely high Cd signal induced by low Ca supply occurred in the phloem tissues, but not in the xylem tissues. Transfer of Cd pretreated plants to nutrient solutions at different Ca levels confirmed that a much higher amount of Cd was reallocated to the new growth tissues under low Ca stress compared to plants supplied with sufficient Ca. These results suggest that Ca deficiency triggered a highly efficient phloem remobilization of Cd in S. alfredii and subsequently enhanced Cd accumulation in its young leaves.

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“…Or reduce heavy metals to a soluble, volatile state. For example, the poorly soluble Pu4+ is reduced to Pu3+, and Hg2+ is reduced to volatile Hg; Some microorganisms can also form corresponding resistance mechanisms such as intracellular isolation mechanisms, membrane mechanisms, and resistance plasmids to form detoxification mechanisms for heavy metals [14]. Plant roots and root secretions can provide a growth environment and nutrient source for microorganisms with degradability, and if exogenous nutrients can be added to improve this condition, the ability of microorganisms to degrade pollutants will be improved.…”

Section: Mechanisms Of Microbial Remediation Of Heavy Metal Contamina...mentioning

confidence: 99%

Application and Prospect of Soil Microorganisms in Agro-ecological Environment

Yu¹,

Li²

2023

FSD

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Sustainable agriculture has also received increasing attention in recent years. In the pollution of the agro-ecological environment, pollution sources such as oil, pesticides and heavy metals are seriously affecting the soil. These pollution will not only reduce food production and poor crop growth, but also greatly affect the soil environment, which will cause major losses to agriculture in the long run. Among the many methods for soil environment remediation, microbial remediation is the most promising bioremediation technology with development and application potential. In this paper, the application types, influencing factors and mechanisms of microorganisms in the restoration of petroleum, heavy metal and pesticide pollution, as well as the development status of microbial remediation technology and its application prospect in agricultural ecological environment are reviewed.

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Metal removal from and microbial property improvement of a multiple heavy metals contaminated soil by phytoextraction with a cadmium hyperaccumulator Sedum alfredii H.

Cited by 23 publications

References 55 publications

Impacts of dimethyl phthalate on the bacterial community and functions in black soils

Impacts of dimethyl phthalate on the bacterial community and functions in black soils

Calcium Deficiency Triggers Phloem Remobilization of Cadmium in a Hyperaccumulating Species

Application and Prospect of Soil Microorganisms in Agro-ecological Environment

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