Abstract
The viable count of free-living diazotrophic bacteria in different crop rhizospheres varied from 1.11 x 10(4) to 8.5 x 10(5) CFU/g of soil. The majority of the diazotrophs phenotypically belong to either Azotobacter chroococcum, non-A. chroococcum type and to a heterogenous group tentatively named putative nitrogen-fixing (PNF) bacteria. In this study, 25 isolates of the PNF group were screened for their multiple plant growth-promoting (PGP) traits and grouped into 5 PGP types. An isolate, PNF(11) showed promising PGP potential in vitro and was characterized as a species of Achromobacter by 16S rRNA analysis. The isolate PNF(11) along with three other previously isolated PGP bacteria, Azotobacter sp. (AZS(3)), fluorescent pseudomonas (Ps(5)), Bacillus sp. (Bc(1)) were selected for crop inoculation response in green house experiment on Vigna radiata var.T44. Plants from inoculated and control pots were sampled and analyzed at 30, 45 and 60 days after sowing for various vegetative, nodule-related data and yield parameters. The findings indicated that selected isolate of PNF bacteria, and other PGP isolates with multiple activities significantly improve the plant growth parameters, yield parameters of Vigna radiata T44 over control and also show good compatibility with Bradyrhizobium inoculation.
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Claims 7
Claim · model-written summary
Diazotroph counts across crop rhizospheres ranged from 1.11 x 10(4) to 8.5 x 10(5) CFU/g.
Verbatim
e0“The viable count of free-living diazotrophic bacteria in different crop rhizospheres varied from 1.11 x 10(4) to 8.5 x 10(5) CFU/g of soil”
Claim · model-written summary
Most diazotrophs belonged phenotypically to Azotobacter and putative nitrogen-fixing groups.
- Taxon
- Vigna radiata
.jpg?width=60)
Vigna radiatae1 - Outcome
- phenotypically belong to either Azotobacter chroococcum, non-A. chroococcum type and to a heterogenous group tentatively named putative nitrogen-fixing (PNF) bacteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The majority of the diazotrophs phenotypically belong to either Azotobacter chroococcum, non-A. chroococcum type and to a heterogenous group tentatively named putative nitrogen-fixing (PNF) bacteria”
e1“green house experiment on Vigna radiata var.T44”
Claim · model-written summary
Twenty-five PNF isolates were grouped into five plant growth promoting types.
- Taxon
- Vigna radiataVigna radiatae1
- Outcome
- grouped into 5 PGP typese0
- Value
- 5 PGP typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“25 isolates of the PNF group were screened for their multiple plant growth-promoting (PGP) traits and grouped into 5 PGP types”
e1“green house experiment on Vigna radiata var.T44”
Claim · model-written summary
PNF(11) had promising growth-promoting potential and was identified as Achromobacter.
- Taxon
- Vigna radiataVigna radiatae1
- Outcome
- promising PGP potential in vitroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An isolate, PNF(11) showed promising PGP potential in vitro and was characterized as a species of Achromobacter by 16S rRNA analysis”
e1“green house experiment on Vigna radiata var.T44”
Claim · model-written summary
Selected PNF and other PGP isolates significantly improved Vigna radiata growth parameters over control.
- Taxon
- Vigna radiata T44Vigna radiatae0
- Treatment
- selected isolate of PNF bacteria, and other PGP isolates with multiple activitiese0
- Outcome
- plant growth parameterse0
- Direction
- improvee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“selected isolate of PNF bacteria, and other PGP isolates with multiple activities significantly improve the plant growth parameters, yield parameters of Vigna radiata T44 over control”
Claim · model-written summary
Selected PNF and other PGP isolates significantly improved Vigna radiata yield parameters over control.
- Taxon
- Vigna radiata T44Vigna radiatae0
- Treatment
- selected isolate of PNF bacteria, and other PGP isolates with multiple activitiese0
- Outcome
- yield parameterse0
- Direction
- improvee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“selected isolate of PNF bacteria, and other PGP isolates with multiple activities significantly improve the plant growth parameters, yield parameters of Vigna radiata T44 over control”
Claim · model-written summary
The PGP isolates showed compatibility with Bradyrhizobium inoculation.
- Taxon
- Vigna radiataVigna radiatae1
- Interactor
- Bradyrhizobium
Bradyrhizobiume0symbiont - Outcome
- good compatibility with Bradyrhizobium inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“also show good compatibility with Bradyrhizobium inoculation”
e1“green house experiment on Vigna radiata var.T44”
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