Abstract
The knowledge of the root nodule microbiome is still beyond the minimum. This study has been designed to isolate and characterize plant growth promoting bacteria and testing their ability to promote plant growth. In addition to Rhizobium MAP7, four other strains have been isolated from Phaseolus vulgaris nodules, and they have been molecularly identified as Bacillus MAP3, Brevibacillus MAP4, Pseudomonas MAP5, and Pseudomonas MAP8. The obtained strains showed the ability to produce IAA, siderophores, and HCN with different capabilities. A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba. The inoculation with Rhizobium MAP7 along with Brevibacillus MAP4 and Pseudomonas MAP5 led to four times increase in the number of nodules (57/plant) compared with that of the control in addition to a significant increase in the physical growth parameters . Additionally, different nitrogen fractions increased significantly in response to this inoculum (226 and 206 mg/g dry weight total nitrogen for shoot and root respectively compared with 175 and 92.5 for control plants). The obtained strains in this study showed a good potentiality as plant growth promotors that might be tried with further crops on wider scale.
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Claims 7
Claim · model-written summary
Four strains isolated from Phaseolus vulgaris nodules were molecularly identified as Bacillus MAP3, Brevibacillus MAP4, Pseudomonas MAP5 and Pseudomonas MAP8.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise0 - Material
- Bacillus MAP3, Brevibacillus MAP4, Pseudomonas MAP5, and Pseudomonas MAP8e0
- Organ / stage
- nodulese0
- Interactor
- Bacillus MAP3e0symbiont
- Outcome
- molecularly identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In addition to Rhizobium MAP7, four other strains have been isolated from Phaseolus vulgaris nodules, and they have been molecularly identified as Bacillus MAP3, Brevibacillus MAP4, Pseudomonas MAP5, and Pseudomonas MAP8”
Claim · model-written summary
The obtained strains produced IAA, siderophores and HCN, with different capabilities.
- Taxon
- Vicia faba
Vicia fabae2 - Interactor
- obtained strainse1symbiont
- Outcome
- the ability to produce IAA, siderophores, and HCNe1
- Qualifier
- with different capabilitiese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The obtained strains showed the ability to produce IAA, siderophores, and HCN with different capabilities”
e2“A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba”
Claim · model-written summary
Inoculation with Rhizobium MAP7, Brevibacillus MAP4 and Pseudomonas MAP5 increased nodule number in Vicia faba four times relative to the control.
- Taxon
- Vicia fabaVicia fabae2
- Treatment
- Rhizobium MAP7 along with Brevibacillus MAP4 and Pseudomonas MAP5e3
- Interactor
- Rhizobium MAP7e3symbiont
- Second interactor
- Brevibacillus MAP4e3symbiont
- Outcome
- number of nodulese3
- Direction
- increasee3
- Value
- 57/plante3
- Qualifier
- four timese3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba”
e3“The inoculation with Rhizobium MAP7 along with Brevibacillus MAP4 and Pseudomonas MAP5 led to four times increase in the number of nodules (57/plant) compared with that of the control”
Claim · model-written summary
The same inoculum significantly increased the physical growth parameters of Vicia faba relative to the control.
- Taxon
- Vicia fabaVicia fabae2
- Treatment
- inoculation with Rhizobium MAP7 along with Brevibacillus MAP4 and Pseudomonas MAP5e3
- Interactor
- Rhizobium MAP7e3symbiont
- Second interactor
- Brevibacillus MAP4e3symbiont
- Outcome
- physical growth parameterse4
- Direction
- increasee4
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba”
e3“The inoculation with Rhizobium MAP7 along with Brevibacillus MAP4 and Pseudomonas MAP5 led to four times increase in the number of nodules (57/plant) compared with that of the control”
e4“in addition to a significant increase in the physical growth parameters”
Claim · model-written summary
The inoculum significantly increased shoot dry weight total nitrogen in Vicia faba (226 mg/g dry weight) compared with control plants (175).
- Taxon
- Vicia fabaVicia fabae2
- Organ / stage
- shoote5
- Treatment
- this inoculume5
- Outcome
- dry weight total nitrogene5
- Direction
- increasede5
- Value
- 226e5
- Qualifier
- mg/g dry weight total nitrogen for shoot and root respectively compared with 175 and 92.5 for control plantse5
- Comparator
- control plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba”
e5“different nitrogen fractions increased significantly in response to this inoculum (226 and 206 mg/g dry weight total nitrogen for shoot and root respectively compared with 175 and 92.5 for control plants)”
Claim · model-written summary
The inoculum significantly increased root dry weight total nitrogen in Vicia faba (206 mg/g dry weight) compared with control plants (92.5).
- Taxon
- Vicia fabaVicia fabae2
- Organ / stage
- roote5
- Treatment
- this inoculume5
- Outcome
- dry weight total nitrogene5
- Direction
- increasede5
- Value
- 206e5
- Qualifier
- mg/g dry weight total nitrogen for shoot and root respectively compared with 175 and 92.5 for control plantse5
- Comparator
- control plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A pot experiment was conducted to investigate the effect of the obtained strains on the physical growth parameters of Vicia faba”
e5“different nitrogen fractions increased significantly in response to this inoculum (226 and 206 mg/g dry weight total nitrogen for shoot and root respectively compared with 175 and 92.5 for control plants)”
Claim · model-written summary
The authors recommend testing the strains with further crops on a wider scale.
Verbatim
e6“The obtained strains in this study showed a good potentiality as plant growth promotors that might be tried with further crops on wider scale”
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