Abstract
Rhizobacteria are well recognized for their beneficial multifunctions as key promoters of plant development, suppressing pathogens, and improving soil health. In this study, experiments focused on characterizing the plant growth promotion (PGP) and extracellular hydrolase production traits of rhizobacteria, and their impact on Jerusalem artichoke growth. A total of 50 isolates proved capable of either direct PGP or hydrolase-producing traits. Two promising strains (Enterobacter cloacae S81 and Pseudomonas azotoformans C2-114) showed potential on phosphate and potassium solubilization, IAA production, and 1-aminocyclopropane-1-carboxylic acid deaminase activity and hydrolase production. A hydrolase-producing strain (Bacillus subtilis S42) was able to generate cellulase, protease, amylase, β-glucosidase, and phosphatase. These three selected strains also gave positive results for indirect PGP traits such as siderophore, ammonia, oxalate oxidase, polyamine, exopolysaccharide, biofilm, motility, and tolerance to salinity and drought stress. Colonization was observed using a scanning electron microscope and rhizobacteria appeared at the root surface. Interestingly, inoculation with consortia strains (S42, S81, and C2-114) significantly increased all plant parameters, including height, biomass, root (length, surface, diameter, and volume), and tuber fresh weight. Therefore, we recommend that potential consortia of PGP and hydrolase-producing rhizobacteria be employed as a biofertilizer to improve soil and boost crop productivity.
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Claims 8
Claim · model-written summary
Fifty isolates had plant growth promotion or hydrolase traits.
- Taxon
- Jerusalem artichoke
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Helianthus tuberosust0 - Outcome
- direct PGP or hydrolase-producing traitse0
- Value
- 50 isolatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“A total of 50 isolates proved capable of either direct PGP or hydrolase-producing traits.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
Enterobacter cloacae S81 and Pseudomonas azotoformans C2-114 showed phosphate and potassium solubilization and IAA production.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Interactor
- Enterobacter cloacae S81
Enterobacter cloacaee0symbiont - Second interactor
- Pseudomonas azotoformans C2-114Pseudomonas azotoformanse0symbiont
- Outcome
- phosphate and potassium solubilization, IAA productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two promising strains (Enterobacter cloacae S81 and Pseudomonas azotoformans C2-114) showed potential on phosphate and potassium solubilization, IAA production, and 1-aminocyclopropane-1-carboxylic acid deaminase activity and hydrolase production.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
Bacillus subtilis S42 generated five named hydrolases.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Interactor
- Bacillus subtilis S42
Bacillus subtilise0symbiont - Outcome
- cellulase, protease, amylase, β-glucosidase, and phosphatasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacillus subtilis S42) was able to generate cellulase, protease, amylase, β-glucosidase, and phosphatase”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
All three selected strains showed indirect growth promotion and stress tolerance traits.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- indirect PGP traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These three selected strains also gave positive results for indirect PGP traits such as siderophore, ammonia, oxalate oxidase, polyamine, exopolysaccharide, biofilm, motility, and tolerance to salinity and drought stress.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
Rhizobacteria colonized the root surface.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Organ / stage
- root surfacee0
- Interactor
- rhizobacteriaHyphomicrobialese0symbiont
- Outcome
- rhizobacteria appeared at the root surfacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colonization was observed using a scanning electron microscope and rhizobacteria appeared at the root surface.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
Consortium inoculation significantly increased height and biomass.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Treatment
- inoculation with consortia strains (S42, S81, and C2-114)e0
- Interactor
- consortia strains (S42, S81, and C2-114)e0symbiont
- Outcome
- height, biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with consortia strains (S42, S81, and C2-114) significantly increased all plant parameters, including height, biomass, root (length, surface, diameter, and volume), and tuber fresh weight.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
Consortium inoculation significantly increased root dimensions and tuber fresh weight.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Treatment
- inoculation with consortia strains (S42, S81, and C2-114)e0
- Interactor
- consortia strains (S42, S81, and C2-114)e0symbiont
- Outcome
- root (length, surface, diameter, and volume), and tuber fresh weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with consortia strains (S42, S81, and C2-114) significantly increased all plant parameters, including height, biomass, root (length, surface, diameter, and volume), and tuber fresh weight.”
t0“Jerusalem artichoke growth improvement”
Claim · model-written summary
The authors recommend rhizobacterial consortia as biofertilizer.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- potential consortia of PGP and hydrolase-producing rhizobacteria be employed as a biofertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we recommend that potential consortia of PGP and hydrolase-producing rhizobacteria be employed as a biofertilizer to improve soil and boost crop productivity”
t0“Jerusalem artichoke growth improvement”
The same questions in other papers
inoculation · growth · Helianthus tuberosus (Jerusalem artichoke)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.