Abstract
To investigate the effects of two cadmium-tolerant bacteria, Staphylococcus pasteuri (S. pasteuri X1) and Agrobacterium tumefaciens (A. tumefaciens X2), on cadmium uptake by the cadmium hyperaccumulator plant Beta vulgaris var. cicla L., a pot experiment with artificially contaminated soil was conducted. The results demonstrated that both cadmium-tolerant bacteria enhanced the dry weight of Beta vulgaris var. cicla L. The total dry weights of plants in the control CK20, S. pasteuri X1 and A. tumefaciens X2 treatments were 0.85, 1.13, and 1.38 g/pot, respectively. Compared with the control CK20 findings, the total dry weight of plants was increased by 32.8 and 61.1% after inoculation with S. pasteuri X1 and A. tumefaciens X2, respectively, indicating that A. tumefaciens X2 more strongly promoted the growth of Beta vulgaris var. cicla L. than S. pasteuri X1. In addition, inoculation with S. pasteuri X1 and A. tumefaciens X2 significantly (p < 0.05) promoted cadmium uptake by plants and improved the bioaccumulation of cadmium by the plants from the soil. Moreover, the inoculation of S. pasteuri X1 and A. tumefaciens X2 effectively facilitated the transfer of cadmium in the soil from the Fe-Mn oxide and residual fractions to the soluble plus exchangeable and weakly specially adsorbed fractions in the rhizosphere soils of plants. The bacterial enhancement of cadmium phytoavailability might provide a potential and promising method to increase the efficiency of phytoextraction.
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Claims 8
Claim · model-written summary
Inoculation with S. pasteuri X1 increased total plant dry weight by 32.8% versus CK20.
Verbatim
e0“Compared with the control CK20 findings, the total dry weight of plants was increased by 32.8 and 61.1% after inoculation with S. pasteuri X1 and A. tumefaciens X2, respectively”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
Inoculation with A. tumefaciens X2 increased total plant dry weight by 61.1% versus CK20.
- Taxon
- Beta Vulgaris Var. CiclaL.t0
- Treatment
- inoculation with S. pasteuri X1 and A. tumefaciens X2e0
- Interactor
- A. tumefaciens X2
Agrobacterium tumefaciense0symbiont - Outcome
- total dry weight of plantse0
- Direction
- increasede0
- Value
- 61.1%e0
- Comparator
- control CK20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control CK20 findings, the total dry weight of plants was increased by 32.8 and 61.1% after inoculation with S. pasteuri X1 and A. tumefaciens X2, respectively”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
A. tumefaciens X2 promoted plant growth more strongly than S. pasteuri X1.
- Taxon
- Beta vulgaris var. cicla L.
Beta vulgaris subsp. ciclae0 - Treatment
- A. tumefaciens X2e0
- Interactor
- A. tumefaciens X2Agrobacterium tumefaciense0symbiont
- Second interactor
- S. pasteuri X1Staphylococcus pasteurie0symbiont
- Outcome
- growthe0
- Direction
- more strongly promotede0
- Comparator
- S. pasteuri X1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating that A. tumefaciens X2 more strongly promoted the growth of Beta vulgaris var. cicla L. than S. pasteuri X1”
Claim · model-written summary
S. pasteuri X1 inoculation significantly promoted plant cadmium uptake and bioaccumulation from soil.
- Taxon
- Beta Vulgaris Var. CiclaL.t0
- Treatment
- inoculation with S. pasteuri X1e0
- Interactor
- S. pasteuri X1Staphylococcus pasteurie0symbiont
- Outcome
- cadmium uptake by plants and improved the bioaccumulation of cadmium by the plants from the soile0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“inoculation with S. pasteuri X1 and A. tumefaciens X2 significantly (p < 0.05) promoted cadmium uptake by plants and improved the bioaccumulation of cadmium by the plants from the soil”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
A. tumefaciens X2 inoculation significantly promoted plant cadmium uptake and bioaccumulation from soil.
- Taxon
- Beta Vulgaris Var. CiclaL.t0
- Treatment
- A. tumefaciens X2e0
- Interactor
- A. tumefaciens X2Agrobacterium tumefaciense0symbiont
- Outcome
- cadmium uptake by plants and improved the bioaccumulation of cadmium by the plants from the soile0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with S. pasteuri X1 and A. tumefaciens X2 significantly (p < 0.05) promoted cadmium uptake by plants and improved the bioaccumulation of cadmium by the plants from the soil”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
Inoculation with S. pasteuri X1 transferred soil cadmium from Fe-Mn oxide and residual fractions toward more available fractions.
- Taxon
- Beta Vulgaris Var. CiclaL.t0
- Treatment
- inoculation of S. pasteuri X1e0
- Interactor
- S. pasteuri X1Staphylococcus pasteurie0symbiont
- Outcome
- transfer of cadmium in the soil from the Fe-Mn oxide and residual fractions to the soluble plus exchangeable and weakly specially adsorbed fractionse0
- Direction
- facilitatede0
Not reportedComparator
Verbatim
e0“the inoculation of S. pasteuri X1 and A. tumefaciens X2 effectively facilitated the transfer of cadmium in the soil from the Fe-Mn oxide and residual fractions to the soluble plus exchangeable and weakly specially adsorbed fractions in the rhizosphere soils of plants”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
Inoculation with A. tumefaciens X2 transferred soil cadmium from Fe-Mn oxide and residual fractions toward more available fractions.
- Taxon
- Beta Vulgaris Var. CiclaL.t0
- Treatment
- A. tumefaciens X2e0
- Interactor
- A. tumefaciens X2Agrobacterium tumefaciense0symbiont
- Outcome
- transfer of cadmium in the soil from the Fe-Mn oxide and residual fractions to the soluble plus exchangeable and weakly specially adsorbed fractionse0
- Direction
- facilitatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation of S. pasteuri X1 and A. tumefaciens X2 effectively facilitated the transfer of cadmium in the soil from the Fe-Mn oxide and residual fractions to the soluble plus exchangeable and weakly specially adsorbed fractions in the rhizosphere soils of plants”
t0“Beta Vulgaris Var. CiclaL.”
Claim · model-written summary
The authors suggest bacterial enhancement of cadmium availability as a potential way to improve phytoextraction.
Verbatim
e0“The bacterial enhancement of cadmium phytoavailability might provide a potential and promising method to increase the efficiency of phytoextraction.”
t0“Beta Vulgaris Var. CiclaL.”
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See all 31 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.