Abstract
Assisted phytoremediation has been widely used for decontamination of potentially toxic elements contaminated soils. A greenhouse experiment was conducted to evaluate the effectiveness of different microbial inoculations and surfactant levels on the phytoremediation of a Pb-polluted calcareous soil by maize. The results showed that application of surfactant increased both root and shoot dry matter yields. Microbial inoculations, however, had no significant effect on the root or shoot dry matter yield. Mean Pb uptake in maize root or shoot increased only following the application of some surfactant levels. Inoculation with microorganisms significantly increased both mean Pb concentration and uptake in maize root but not in maize shoot. Application of 4 mmol surfactant kg−1 along with inoculation with Priformospora indica was effective in increasing Pb phytostabilisation potential. While the application of 2 mmol surfactant kg−1 along with inoculation with Pseudomonas fluorescens was effective in increasing Pb phytoextraction potential. The fact that the values of translocation efficiencies were low in all treatments, demonstrated the low capability of maize for translocation of Pb from root to shoot. Inoculation with P. fluorescens was the most effective treatment in increasing metal micronutrient uptake. Microbial inoculation and surfactant levels enhanced Pb phytoremediation mostly through phytostabilisation of this metal by maize.
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Claims 11
Claim · model-written summary
Surfactant increased maize root and shoot dry matter yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of surfactant increased both root and shoot dry matter yields”
e1“soil by maize”
Claim · model-written summary
Microbial inoculations did not significantly affect root or shoot dry matter yield.
- Treatment
- Microbial inoculationse0
- Outcome
- root or shoot dry matter yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial inoculations, however, had no significant effect on the root or shoot dry matter yield.”
e1“soil by maize”
Claim · model-written summary
Some surfactant levels increased mean lead uptake in maize roots and shoots.
- Treatment
- application of some surfactant levelse0
- Outcome
- Mean Pb uptake in maize root or shoote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean Pb uptake in maize root or shoot increased only following the application of some surfactant levels.”
Claim · model-written summary
Microbial inoculation significantly increased mean root lead concentration.
- Organ / stage
- maize roote0
- Treatment
- Inoculation with microorganismse0
- Interactor
- microorganismse0symbiont
- Outcome
- mean Pb concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with microorganisms significantly increased both mean Pb concentration and uptake in maize root but not in maize shoot.”
Claim · model-written summary
Microbial inoculation significantly increased mean root lead uptake.
- Treatment
- Inoculation with microorganismse0
- Interactor
- microorganismse0symbiont
- Outcome
- uptake in maize roote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with microorganisms significantly increased both mean Pb concentration and uptake in maize root but not in maize shoot.”
Claim · model-written summary
Microbial inoculation did not significantly increase shoot lead concentration or uptake.
- Treatment
- Inoculation with microorganismse0
- Interactor
- microorganismse0symbiont
- Outcome
- mean Pb concentration and uptake in maize root but not in maize shoote0
- Direction
- not ine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with microorganisms significantly increased both mean Pb concentration and uptake in maize root but not in maize shoot.”
Claim · model-written summary
The 4 mmol surfactant treatment with Priformospora indica increased lead phytostabilisation potential.
- Treatment
- Application of 4 mmol surfactant kg−1 along with inoculation with Priformospora indicae0
- Interactor
- Priformospora indicae0symbiont
- Outcome
- Pb phytostabilisation potentiale0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 4 mmol surfactant kg−1 along with inoculation with Priformospora indica was effective in increasing Pb phytostabilisation potential.”
e1“soil by maize”
Claim · model-written summary
The 2 mmol surfactant treatment with Pseudomonas fluorescens increased lead phytoextraction potential.
- Treatment
- application of 2 mmol surfactant kg−1 along with inoculation with Pseudomonas fluorescense0
- Interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense0symbiont - Outcome
- Pb phytoextraction potentiale0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“application of 2 mmol surfactant kg−1 along with inoculation with Pseudomonas fluorescens was effective in increasing Pb phytoextraction potential.”
e1“soil by maize”
Claim · model-written summary
Low translocation efficiency indicated limited root to shoot lead translocation by maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the values of translocation efficiencies were low in all treatments, demonstrated the low capability of maize for translocation of Pb from root to shoot.”
Claim · model-written summary
Pseudomonas fluorescens inoculation most effectively increased metal micronutrient uptake.
- Treatment
- Inoculation with P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0symbiont
- Outcome
- metal micronutrient uptakee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with P. fluorescens was the most effective treatment in increasing metal micronutrient uptake.”
e1“soil by maize”
Claim · model-written summary
Microbial inoculation and surfactant improved lead phytoremediation mostly through phytostabilisation.
- Treatment
- Microbial inoculation and surfactant levelse0
- Interactor
- Microbiale0symbiont
- Outcome
- Pb phytoremediatione0
- Qualifier
- mostly through phytostabilisatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial inoculation and surfactant levels enhanced Pb phytoremediation mostly through phytostabilisation of this metal by maize.”
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See all 538 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.