Abstract
Remediation plants combined with plant growth promoting rhizobacteria (PGPR) is one of the most promising means of remediation of Cd-contaminated soils at present. One of the PGPR, named Bacillus amyloliquefaciens Bam1, possessed high Cd resistance. Herein, comparative transcriptome analysis of B. amyloliquefaciens Bam1 revealed that its main energy metabolism pathway was significantly down-regulated under Cd stress. The pivotal genes involved in the energy production pathway, such as TCA cycle and respiratory chain, were then selected to construct the energy production enhanced strains named as Bam1sdhA, Bam1fumC, and Bam1qoxD. The Cd resistance of the three recombinant strains increased significantly by producing more ATP and less ROS, allowing them to colonize Cd-contaminated soil better than the wild-type Bam1 strain. The better colonization of strain Bam1fumC improved the photosynthesis and growth of the remediation plant, tomatoes, under Cd stress significantly. Furthermore, the Cd concentration accumulated in tomatoes with the Cd + Bam1fumC treatment was 1.88 times that of the Cd + Bam1 treatment. As the energy production enhanced, Bam1fumC exhibited considerable potential for development as a bioaugmentation assistant in Cd-contaminated phytoremediation. This study also provided a novel strategy for addressing soil Cd pollution remediation.
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Claims 3
Claim · model-written summary
Bam1fumC improved tomato photosynthesis under Cd stress.
- Taxon
- tomatoes
Solanum lycopersicume0 - Treatment
- strain Bam1fumCe0
- Interactor
- Bam1fumCe0symbiont
- Outcome
- photosynthesise0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The better colonization of strain Bam1fumC improved the photosynthesis and growth of the remediation plant, tomatoes, under Cd stress significantly.”
Claim · model-written summary
Bam1fumC improved tomato growth under Cd stress.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- strain Bam1fumCe0
- Interactor
- Bam1fumCe0symbiont
- Outcome
- growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The better colonization of strain Bam1fumC improved the photosynthesis and growth of the remediation plant, tomatoes, under Cd stress significantly.”
Claim · model-written summary
Tomatoes with Cd + Bam1fumC accumulated 1.88 times the Cd concentration of those with Cd + Bam1.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- Cd + Bam1fumCe0
- Interactor
- Bam1fumCe0symbiont
- Outcome
- Cd concentration accumulated in tomatoese0
- Value
- 1.88 timese0
- Comparator
- Cd + Bam1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Cd concentration accumulated in tomatoes with the Cd + Bam1fumC treatment was 1.88 times that of the Cd + Bam1 treatment”
The same questions in other papers
cadmium atom · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 9 in the opposite direction
- no effect
- negative
- negative
8 papers more in this group
See all 12 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.