Abstract
Chloropicrin (CP) can effectively combat soil-borne diseases but has significant side effects on nontarget microorganisms. The rhizosphere microflora play a crucial role in promoting plant growth and protecting plants from infection by soil-borne pathogens. We conducted a laboratory pot experiment to evaluate the effect of CP on the rhizosphere soil bacterial flora and the effect of biochar amendments on the reconstruction of microbial communities. Our results show that CP fumigation and biochar additions promoted the growth of cucumber plants in the later stage of the pot experiment. CP significantly inhibited the rhizobacterial diversity and changed the community composition. Biochar amendments after CP fumigation shortened the time for the rhizobacterial diversity to recover to unfumigated levels. Biochar amendments promoted the transplantation of new populations to empty microbiome niches that were caused by CP and, in particular, stimulated many beneficial microorganisms to become the predominant flora. The relative abundances of many functional taxa related to plant-disease suppressiveness and pollutant bioremediation increased, including Pseudomonas, Stenotrophomonas, Bacillus, Massilia, Acinetobacter, Delftia, Micromonospora, Cytophagaceae, and Flavisolibacter. These changes stimulated by biochar amendments would promote multifunctionality in the soil rhizosphere and benefit plant growth and disease resistance.
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Claims 9
Claim · model-written summary
CP fumigation promoted later cucumber growth.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- CP fumigatione0
- Outcome
- growth of cucumber plantse0
- Direction
- promotede0
- Qualifier
- later stage of the pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results show that CP fumigation and biochar additions promoted the growth of cucumber plants in the later stage of the pot experiment.”
Claim · model-written summary
biochar additions promoted later cucumber growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- biochar additionse0
- Outcome
- growth of cucumber plantse0
- Direction
- promotede0
- Qualifier
- later stage of the pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results show that CP fumigation and biochar additions promoted the growth of cucumber plants in the later stage of the pot experiment.”
Claim · model-written summary
CP significantly inhibited cucumber rhizobacterial diversity.
Not reportedComparator
Verbatim
e0“CP significantly inhibited the rhizobacterial diversity and changed the community composition.”
t0“Planted Soil”
Claim · model-written summary
CP changed cucumber rhizobacterial community composition.
Not reportedComparatorDirection
Verbatim
e0“CP significantly inhibited the rhizobacterial diversity and changed the community composition.”
t0“Planted Soil”
Claim · model-written summary
Biochar after CP fumigation shortened rhizobacterial diversity recovery time.
Verbatim
e0“Biochar amendments after CP fumigation shortened the time for the rhizobacterial diversity to recover to unfumigated levels.”
t0“Planted Soil”
Claim · model-written summary
Biochar promoted new populations in empty rhizosphere niches.
- Taxon
- Planted Soilt0
- Treatment
- Biochar amendmentse0
- Outcome
- transplantation of new populations to empty microbiome nichese0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“Biochar amendments promoted the transplantation of new populations to empty microbiome niches that were caused by CP and, in particular, stimulated many beneficial microorganisms to become the predominant flora.”
t0“Planted Soil”
Claim · model-written summary
Biochar stimulated beneficial microorganisms to predominate.
- Taxon
- Planted Soilt0
- Treatment
- Biochar amendmentse0
- Outcome
- beneficial microorganisms to become the predominant florae0
- Direction
- stimulatede0
Not reportedComparator
Verbatim
e0“Biochar amendments promoted the transplantation of new populations to empty microbiome niches that were caused by CP and, in particular, stimulated many beneficial microorganisms to become the predominant flora.”
t0“Planted Soil”
Claim · model-written summary
Relative abundances of functional disease suppressive and bioremediation taxa increased.
Verbatim
e0“The relative abundances of many functional taxa related to plant-disease suppressiveness and pollutant bioremediation increased, including Pseudomonas, Stenotrophomonas, Bacillus, Massilia, Acinetobacter, Delftia, Micromonospora, Cytophagaceae, and Flavisolibacter.”
t0“Planted Soil”
Claim · model-written summary
Authors infer biochar driven microbial changes would benefit plant growth and disease resistance.
Verbatim
e0“These changes stimulated by biochar amendments would promote multifunctionality in the soil rhizosphere and benefit plant growth and disease resistance.”
t0“Planted Soil”
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See all 17 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.