Abstract
2,4,6-trinitrotoluene (TNT) and cobalt (Co) contaminants have posed a severe environmental problem in many countries. Phytoremediation is an environmentally friendly technology for the remediation of these contaminants. However, the toxicity of TNT and cobalt limit the efficacy of phytoremediation application. The present research showed that expressing the Acidithiobacillus ferrooxidans single-strand DNA-binding protein gene (AfSSB) can improve the tolerance of Arabidopsis and tall fescue to TNT and cobalt. Compared to control plants, the AfSSB transformed Arabidopsis and tall fescue exhibited enhanced phytoremediation of TNT and cobalt separately contaminated soil and co-contaminated soil. The comet analysis revealed that the AfSSB transformed Arabidopsis suffer reduced DNA damage than control plants under TNT or cobalt exposure. In addition, the proteomic analysis revealed that AfSSB improves TNT and cobalt tolerance by strengthening the reactive superoxide (ROS) scavenging system and the detoxification system. Results presented here serve as strong theoretical support for the phytoremediation potential of organic and metal pollutants mediated by single-strand DNA-binding protein genes. SUMMARIZES: This is the first report that AfSSB enhances phytoremediation of 2,4,6-trinitrotoluene and cobalt separately contaminated and co-contaminated soil.
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Claims 6
Claim · model-written summary
AfSSB expression improved Arabidopsis tolerance to TNT and cobalt.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- expressing the Acidithiobacillus ferrooxidans single-strand DNA-binding protein gene (AfSSB)e0
- Gene
- AfSSBe0
- Outcome
- tolerance of Arabidopsise0
- Direction
- improvee0
- Qualifier
- TNT and cobalte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expressing the Acidithiobacillus ferrooxidans single-strand DNA-binding protein gene (AfSSB) can improve the tolerance of Arabidopsis and tall fescue to TNT and cobalt.”
Claim · model-written summary
AfSSB expression improved tall fescue tolerance to TNT and cobalt.
- Taxon
- tall fescue
Lolium arundinaceume0 - Treatment
- expressing the Acidithiobacillus ferrooxidans single-strand DNA-binding protein gene (AfSSB)e0
- Gene
- AfSSBe0
- Outcome
- tolerance of Arabidopsis and tall fescuee0
- Direction
- improvee0
- Qualifier
- TNT and cobalte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expressing the Acidithiobacillus ferrooxidans single-strand DNA-binding protein gene (AfSSB) can improve the tolerance of Arabidopsis and tall fescue to TNT and cobalt.”
Claim · model-written summary
AfSSB-transformed Arabidopsis showed enhanced phytoremediation of separately and jointly contaminated soil relative to controls.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- AfSSB transformed Arabidopsise0
- Gene
- AfSSBe0
- Outcome
- phytoremediation of TNT and cobalt separately contaminated soil and co-contaminated soile0
- Direction
- enhancede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to control plants, the AfSSB transformed Arabidopsis and tall fescue exhibited enhanced phytoremediation of TNT and cobalt separately contaminated soil and co-contaminated soil.”
Claim · model-written summary
AfSSB-transformed tall fescue showed enhanced phytoremediation of separately and jointly contaminated soil relative to controls.
- Taxon
- tall fescueLolium arundinaceume0
- Treatment
- AfSSB transformed Arabidopsis and tall fescuee0
- Gene
- AfSSBe0
- Outcome
- phytoremediation of TNT and cobalt separately contaminated soil and co-contaminated soile0
- Direction
- enhancede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to control plants, the AfSSB transformed Arabidopsis and tall fescue exhibited enhanced phytoremediation of TNT and cobalt separately contaminated soil and co-contaminated soil.”
Claim · model-written summary
AfSSB-transformed Arabidopsis had reduced DNA damage under TNT exposure compared with controls.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- AfSSB transformed Arabidopsise0
- Gene
- AfSSBe0
- Outcome
- DNA damagee0
- Direction
- reducede0
- Qualifier
- TNT or cobalt exposuree0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the AfSSB transformed Arabidopsis suffer reduced DNA damage than control plants under TNT or cobalt exposure.”
Claim · model-written summary
AfSSB improved contaminant tolerance by strengthening ROS scavenging and detoxification systems.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- AfSSBe0
- Outcome
- TNT and cobalt tolerancee0
- Qualifier
- strengthening the reactive superoxide (ROS) scavenging system and the detoxification systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AfSSB improves TNT and cobalt tolerance by strengthening the reactive superoxide (ROS) scavenging system and the detoxification system.”
e1“tolerance of Arabidopsis and tall fescue to TNT and cobalt”
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