Abstract
P-solubilizing bacterial isolate CB7 isolated from apple rhizosphere soil of Himachal Pradesh, India was identified as Bacillus circulans on the basis of phenotypic characteristics, biochemical tests, fatty acid methyl esters analysis, and 16S rRNA gene sequence. The isolate exhibited plant growth-promoting traits of P-solubilization, auxin, 1-aminocyclopropane-1-carboxylate deaminase activity, siderophore, nitrogenase activity, and antagonistic activity against Dematophora necatrix. In vitro studies revealed that P-solubilization and other plant growth-promoting traits were dependent on the presence of glucose in PVK medium and removal of yeast extract had no significant effect on plant growth-promoting traits. Plant growth-promoting traits of isolate CB7 were repressed in the presence of KH2 PO4 . P-solubilization activity was associated with the release of organic acids and a drop in the pH of the Pikovskaya's medium. HPLC analysis detected gluconic and citric acid as major organic acids in the course of P-solubilization. Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control. These results demonstrate that isolate CB7 has the promising PGPR attributes to be developed as a biofertilizer to enhance soil fertility and promote plant growth.
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Claims 14
Claim · model-written summary
Isolate CB7 showed plant growth-promoting traits, including P-solubilization, auxin, ACC deaminase, siderophore, nitrogenase and antagonism against Dematophora necatrix.
- Taxon
- tomato
Solanum lycopersicumt0 - Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- plant growth-promoting traitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e1“The isolate exhibited plant growth-promoting traits of P-solubilization, auxin, 1-aminocyclopropane-1-carboxylate deaminase activity, siderophore, nitrogenase activity, and antagonistic activity against Dematophora necatrix”
Claim · model-written summary
P-solubilization by CB7 was associated with a drop in the pH of the Pikovskaya medium through organic acid release.
- Taxon
- tomatoSolanum lycopersicumt0
- Compound
- organic acidse2
- Outcome
- pH of the Pikovskaya's mediume2
- Direction
- drope2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
e2“P-solubilization activity was associated with the release of organic acids and a drop in the pH of the Pikovskaya's medium”
Claim · model-written summary
HPLC detected gluconic and citric acid as the major organic acids during P-solubilization.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- gluconic and citric acid as major organic acidse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
e3“HPLC analysis detected gluconic and citric acid as major organic acids in the course of P-solubilization”
Claim · model-written summary
Bacillus circulans CB7 increased seed germination by 22.32% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- seed germinatione4
- Direction
- increasee4
- Value
- 22.32%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased shoot length by 15.91% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- shoot lengthe4
- Direction
- increasee4
- Value
- 15.91%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased root length by 25.10% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- root lengthe4
- Direction
- increasee4
- Value
- 25.10%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased shoot dry weight by 52.92% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- shoot dry weighte4
- Direction
- increasee4
- Value
- 52.92%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased root dry weight by 31.4% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- root dry weighte4
- Direction
- increasee4
- Value
- 31.4%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased shoot nitrogen content by 18.75% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- nitrogene4
- Direction
- increasee4
- Value
- 18.75%e4
- Qualifier
- content of shoot biomasse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased shoot potassium content by 57.69% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- potassiume4
- Direction
- increasee4
- Value
- 57.69%e4
- Qualifier
- content of shoot biomasse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
Bacillus circulans CB7 increased shoot phosphorus content by 22.22% over control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus circulans CB7t1
- Interactor
- Bacillus circulans CB7t1symbiont
- Outcome
- phosphoruse4
- Direction
- increasee4
- Value
- 22.22%e4
- Qualifier
- content of shoot biomasse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
t1“Bacillus circulans CB7”
e4“Remarkable increase was observed in seed germination (22.32%), shoot length (15.91%), root length (25.10%), shoot dry weight (52.92%) and root dry weight (31.4%), nitrogen (18.75%), potassium (57.69%), and phosphorus (22.22%) content of shoot biomass over control”
Claim · model-written summary
P-solubilization and other growth-promoting traits of CB7 depended on glucose in PVK medium.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- glucosee5
- Outcome
- P-solubilization and other plant growth-promoting traitse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
e5“In vitro studies revealed that P-solubilization and other plant growth-promoting traits were dependent on the presence of glucose in PVK medium”
Claim · model-written summary
Removal of yeast extract had no significant effect on the growth-promoting traits of CB7.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- removal of yeast extracte6
- Outcome
- plant growth-promoting traitse6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
e6“removal of yeast extract had no significant effect on plant growth-promoting traits”
Claim · model-written summary
Plant growth-promoting traits of CB7 were repressed in the presence of KH2PO4.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- KH2 PO4e7
- Outcome
- Plant growth-promoting traitse7
- Direction
- repressede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato growth”
e7“Plant growth-promoting traits of isolate CB7 were repressed in the presence of KH2 PO4”
The same questions in other papers
botanical · growth · Solanum lycopersicum (tomato)Positive and negative results
87 papers in the same direction as this paper · 203 in the opposite direction
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