Abstract
Plants in combination with microorganisms can remediate soils, which are contaminated with organic pollutants such as petroleum hydrocarbons. Inoculation of plants with degrading bacteria is one approach to improve remediation processes, but is often not successful due to the competition with resident microorganisms. It is therefore of high importance to address the persistence and colonization behavior of inoculant strains. The objective of this study was to determine whether the inoculation method (seed imbibement and soil inoculation) influences bacterial colonization, plant growth promotion and hydrocarbon degradation. Italian ryegrass was grown in non-sterilized soil polluted with diesel and inoculated with different alkane-degrading strains Pantoea sp. ITSI10, Pantoea sp. BTRH79 and Pseudomonas sp. MixRI75 individually as well as in combination. Inoculation generally had a beneficial effect on plant biomass production and hydrocarbon degradation, however, strains inoculated in soil performed better than applied by seed imbibement. Performance correlated with the colonization efficiency of the inoculated strains. The highest hydrocarbon degradation was observed in the treatment, in which all three strains were inoculated in combination into soil. Our study revealed that besides the degradation potential and competitive ability of inoculant strains the inoculation method plays an important role in determining the success of microbial inoculation.
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Claims 6
Claim · model-written summary
Bacterial inoculation increased Italian ryegrass biomass production.
- Taxon
- Italian ryegrass
Lolium multiflorume1 - Treatment
- Inoculatione0
- Interactor
- Pantoea sp. ITSI10
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Pantoea sp. ITSI10e0symbiont - Outcome
- plant biomass productione0
- Direction
- beneficial effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Italian ryegrass was grown in non-sterilized soil polluted with diesel and inoculated with different alkane-degrading strains Pantoea sp. ITSI10, Pantoea sp. BTRH79 and Pseudomonas sp. MixRI75 individually as well as in combination. Inoculation generally had a beneficial effect on plant biomass production and hydrocarbon degradation”
e1“Italian ryegrass was grown”
Claim · model-written summary
Bacterial inoculation improved hydrocarbon degradation in soil with Italian ryegrass.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- Inoculatione0
- Outcome
- hydrocarbon degradatione0
- Direction
- beneficial effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation generally had a beneficial effect on plant biomass production and hydrocarbon degradation”
e1“Italian ryegrass was grown”
Claim · model-written summary
Soil inoculation performed better than seed imbibement.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- inoculated in soile0
- Outcome
- performed bettere0
- Direction
- bettere0
- Comparator
- seed imbibemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strains inoculated in soil performed better than applied by seed imbibement”
e1“Italian ryegrass was grown”
Claim · model-written summary
Inoculant performance correlated with colonization efficiency.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- inoculated strainse0
- Outcome
- Performancee0
- Qualifier
- colonization efficiency of the inoculated strainse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Performance correlated with the colonization efficiency of the inoculated strains”
e1“Italian ryegrass was grown”
Claim · model-written summary
Combining all three strains in soil produced the highest hydrocarbon degradation.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- all three strains were inoculated in combination into soile0
- Outcome
- hydrocarbon degradatione0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest hydrocarbon degradation was observed in the treatment, in which all three strains were inoculated in combination into soil”
e1“Italian ryegrass was grown”
Claim · model-written summary
The inoculation method was interpreted as important for microbial inoculation success.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- inoculation methode0
- Outcome
- success of microbial inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“besides the degradation potential and competitive ability of inoculant strains the inoculation method plays an important role in determining the success of microbial inoculation”
e1“Italian ryegrass was grown”
The same questions in other papers
inoculation · molecular: metabolites · Lolium multiflorum (Italian ryegrass)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.