Abstract
The aim of this study was to isolate and characterize bacteria from the compost of fruit and vegetable waste (FVW) for plant growth-promoting (PGP) activities and investigate the pro-active influence of bacterial isolates on wheat growth. Fourteen bacterial strains (RHC-1 to RHC-14) were isolated and purified in tryptic soya agar (TSA). In addition to being biochemically characterized, these bacterial strains were also tested for their PGP traits, such as phosphate (P)-solubilization, nif H gene amplification, indole-3-acetic acid (IAA) quantification and the production of ammonia, oxidase and catalase. Based on 16S rRNA gene sequencing, these bacterial strains were identified as belonging to species of Bacillus , Lysinibacillus , Lysobacter , Staphylococcus , Enterobacter , Pseudomonas and Serratia . All bacterial strains solubilized tri-calcium phosphate and produced IAA. Two bacterial strains RHC-8 ( Enterobacter sp.) and RHC-13 ( Pseudomonas sp.) solubilized the maximum amount of tri-calcium phosphate, i.e. 486 and 464 μg/ml, respectively. P-solubilization was associated with a significant drop in the pH of the broth culture from an initial pH of 7 to pH 4.43. In addition to P-solubilization and IAA production, six bacterial strains also carried the nif H gene and were further evaluated for their effect on wheat ( Triticum aestivum ) growth under controlled conditions. All six bacterial strains enhanced wheat growth as compared to uninoculated control plants. Two of the bacterial strains, RHC-8 and RHC-13, identified as Enterobacter aerogenes and Pseudomonas brenneri , respectively, were assessed as potential PGP rhizobacteria due to exhibiting characteristics of four or more PGP traits and enhancing wheat growth though their specific mechanism of action.
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Claims 10
Claim · model-written summary
All six bacterial strains enhanced wheat growth compared with uninoculated control plants.
- Taxon
- wheat
Triticum aestivume2 - Treatment
- six bacterial strainse2
- Outcome
- wheat growthe2
- Direction
- enhancede2
- Comparator
- uninoculated control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“All six bacterial strains enhanced wheat growth as compared to uninoculated control plants”
Claim · model-written summary
Strain RHC-8 (Enterobacter sp.) solubilized the maximum amount of tri-calcium phosphate, 486 μg/ml.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Enterobacter sp.
Enterobactere3other - Outcome
- solubilized the maximum amount of tri-calcium phosphatee3
- Value
- 486e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e3“Two bacterial strains RHC-8 ( Enterobacter sp.) and RHC-13 ( Pseudomonas sp.) solubilized the maximum amount of tri-calcium phosphate, i.e. 486 and 464 μg/ml, respectively”
Claim · model-written summary
Strain RHC-13 (Pseudomonas sp.) solubilized the maximum amount of tri-calcium phosphate, 464 μg/ml.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Pseudomonas sp.
Pseudomonase3other - Outcome
- solubilized the maximum amount of tri-calcium phosphatee3
- Value
- 464e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e3“Two bacterial strains RHC-8 ( Enterobacter sp.) and RHC-13 ( Pseudomonas sp.) solubilized the maximum amount of tri-calcium phosphate, i.e. 486 and 464 μg/ml, respectively”
Claim · model-written summary
All bacterial strains solubilized tri-calcium phosphate and produced IAA.
- Taxon
- wheatTriticum aestivume1
- Outcome
- solubilized tri-calcium phosphate and produced IAAe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e4“All bacterial strains solubilized tri-calcium phosphate and produced IAA”
Claim · model-written summary
P-solubilization was associated with a significant drop in broth pH from an initial pH of 7 to pH 4.43.
- Taxon
- wheatTriticum aestivume1
- Treatment
- P-solubilizatione5
- Outcome
- pH of the broth culturee5
- Direction
- drope5
- Value
- pH 4.43e5
- Comparator
- an initial pH of 7e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e5“P-solubilization was associated with a significant drop in the pH of the broth culture from an initial pH of 7 to pH 4.43”
Claim · model-written summary
Six bacterial strains carried the nif H gene.
- Taxon
- wheatTriticum aestivume1
- Gene
- nif He6
- Outcome
- carried the nif H genee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e6“six bacterial strains also carried the nif H gene”
Claim · model-written summary
Strains RHC-8 and RHC-13 were identified as Enterobacter aerogenes and Pseudomonas brenneri.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Enterobacter aerogenes
Klebsiella aerogenese7other - Second interactor
- Pseudomonas brenneriPseudomonas brennerie7other
- Outcome
- identified ase7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e7“Two of the bacterial strains, RHC-8 and RHC-13, identified as Enterobacter aerogenes and Pseudomonas brenneri , respectively”
Claim · model-written summary
Isolates identified by 16S rRNA sequencing as Bacillus, Lysinibacillus and Lysobacter.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Bacillus , Lysinibacillus , Lysobactere0other
- Outcome
- identified as belonging to species ofe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e0“Based on 16S rRNA gene sequencing, these bacterial strains were identified as belonging to species of Bacillus , Lysinibacillus , Lysobacter , Staphylococcus , Enterobacter , Pseudomonas and Serratia”
Claim · model-written summary
Isolates identified by 16S rRNA sequencing as Staphylococcus, Enterobacter and Pseudomonas.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Staphylococcus , Enterobacter , PseudomonasPseudomonasEnterobacter
Staphylococcuse0other - Outcome
- identified as belonging to species ofe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e0“Based on 16S rRNA gene sequencing, these bacterial strains were identified as belonging to species of Bacillus , Lysinibacillus , Lysobacter , Staphylococcus , Enterobacter , Pseudomonas and Serratia”
Claim · model-written summary
An isolate identified by 16S rRNA sequencing as Serratia.
- Taxon
- wheatTriticum aestivume1
- Interactor
- Serratiae0other
- Outcome
- identified as belonging to species ofe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the pro-active influence of bacterial isolates on wheat growth”
e0“Based on 16S rRNA gene sequencing, these bacterial strains were identified as belonging to species of Bacillus , Lysinibacillus , Lysobacter , Staphylococcus , Enterobacter , Pseudomonas and Serratia”
The same questions in other papers
inoculation · growth · Triticum aestivum (wheat)Positive and negative results
475 papers in the same direction as this paper · 55 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
528 papers more in this group
See all 532 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.