Abstract
In the three-year field and pot experiments,this study investigates possibility of the CP4-EPSPS gene flow of Roundup Ready Soybean(RRS)in black soil ecosystem,and impacts of RRS on numbers of its rhizosphere microorganisms,N-cycling and some enzymes in soil.According to the field experiments,the CP4-EPSPS gene flow did not happen in natural condition,but under insects(more than 10 insects per square meter) helping to pollen,the floating possibility of this gene was 0.05%,and the floating distance was 0.7 meter.In different soybean growth stages,in rhizosphere soil of RRS,the amount of bacteria,actinomycete,ammonifying bacteria,and nitrifying bacteria showed decreasing tendencies,except no effect on total number of fungus.The bacterial diversity indexes and homogeneous degrees indexes in rhizospheric soil of RRS were lower than that of its parent RRS-S.The difference of ammonification intensity was not significant in RRS and RRS-S rhizosphere soil,and nitrification intensity in RRS was significantly lower than that in RRS-S rhizosphere soil in different growth stages and RRS inhibited activities of catalase and urease.
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Claims 9
Claim · model-written summary
No CP4-EPSPS gene flow occurred under natural field conditions.
- Taxon
- Soybean
Glycine maxt0 - Gene
- CP4-EPSPSe0
- Outcome
- CP4-EPSPS gene flowe0
- Direction
- did not happene0
- Setting
- natural conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CP4-EPSPS gene flow did not happen in natural condition”
t0“Roundup Ready Soybean(RRS)”
Claim · model-written summary
With insect-assisted pollination above 10 insects per square meter, CP4-EPSPS gene flow was 0.05% over 0.7 meter.
- Taxon
- SoybeanGlycine maxt0
- Gene
- CP4-EPSPSe1
- Outcome
- floating possibility of this genee0
- Value
- 0.05%e0
- Qualifier
- under insects(more than 10 insects per square meter) helping to pollene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under insects(more than 10 insects per square meter) helping to pollen,the floating possibility of this gene was 0.05%,and the floating distance was 0.7 meter”
e1“possibility of the CP4-EPSPS gene flow”
t0“Soybean”
Claim · model-written summary
The gene flow distance under insect-assisted pollination was 0.7 meter.
- Taxon
- SoybeanGlycine maxt0
- Gene
- CP4-EPSPSe1
- Outcome
- floating distancee0
- Value
- 0.7 metere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under insects(more than 10 insects per square meter) helping to pollen,the floating possibility of this gene was 0.05%,and the floating distance was 0.7 meter”
e1“possibility of the CP4-EPSPS gene flow”
t0“Soybean”
Claim · model-written summary
Bacteria, actinomycetes, ammonifying bacteria and nitrifying bacteria tended to decrease in RRS rhizosphere soil across growth stages.
- Taxon
- soybeanGlycine maxe0
- Material
- RRSe0
- Outcome
- amount of bacteria,actinomycete,ammonifying bacteria,and nitrifying bacteriae0
- Direction
- decreasing tendenciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In different soybean growth stages,in rhizosphere soil of RRS,the amount of bacteria,actinomycete,ammonifying bacteria,and nitrifying bacteria showed decreasing tendencies”
Claim · model-written summary
RRS had no effect on total fungal number in rhizosphere soil.
- Taxon
- soybeanGlycine maxe0
- Material
- RRSe0
- Outcome
- total number of funguse0
- Direction
- no effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In different soybean growth stages,in rhizosphere soil of RRS,the amount of bacteria,actinomycete,ammonifying bacteria,and nitrifying bacteria showed decreasing tendencies,except no effect on total number of fungus”
Claim · model-written summary
Bacterial diversity and homogeneous degrees indexes were lower in RRS rhizosphere than in parent RRS-S.
- Taxon
- SoybeanGlycine maxt0
- Material
- RRSe0
- Outcome
- bacterial diversity indexes and homogeneous degrees indexese0
- Direction
- lowere0
- Comparator
- RRS-Se0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial diversity indexes and homogeneous degrees indexes in rhizospheric soil of RRS were lower than that of its parent RRS-S”
t0“Soybean”
Claim · model-written summary
Ammonification intensity did not differ significantly between RRS and RRS-S rhizosphere soil.
- Taxon
- SoybeanGlycine maxt0
- Material
- RRSe0
- Outcome
- ammonification intensitye0
- Comparator
- RRS-Se0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The difference of ammonification intensity was not significant in RRS and RRS-S rhizosphere soil”
t0“Soybean”
Claim · model-written summary
Nitrification intensity was significantly lower in RRS than RRS-S rhizosphere soil across growth stages.
- Taxon
- SoybeanGlycine maxt0
- Material
- RRSe0
- Outcome
- nitrification intensitye0
- Direction
- lowere0
- Comparator
- RRS-Se0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrification intensity in RRS was significantly lower than that in RRS-S rhizosphere soil in different growth stages”
t0“Soybean”
Claim · model-written summary
RRS inhibited catalase and urease activities in rhizosphere soil.
- Taxon
- SoybeanGlycine maxt0
- Material
- RRSe0
- Gene
- catalase and ureasee0
- Outcome
- activities of catalase and ureasee0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RRS inhibited activities of catalase and urease”
t0“Soybean”