Abstract
The aim of this work was to determine the effect of wild type and functionally modified Pseudomonas fluorescens strains on C fractions in the rhizosphere of pea. The lacZY marked F113 strain produces the antibiotic 2,4 diacetylphloroglucinol (DAPG) useful in plant disease control. The modified strain of F113 was represented in production of DAPG, creating the DAPG negative strain F113 G22. The F113 treatment resulted in a significantly lower shoot/root ratio. The F113 G22 treatment had a significantly greater indigenous and total fluorescent Pseudomonas population than the control and F113 (DAPG+) treatment. Both strains significantly increased the water soluble carbohydrates and the total water soluble carbon in the pea rhizosphere soil. Strain F113 significantly increased the soil protein content relative to the control, but not in relation to the F113 G22 treatment. The F113 treatment had a significantly greater organic acid content than the control and F113 G22 treatments, whilst the F113 G22 treatment was also significantly greater than the control. Both inocula resulted in significantly lower phosphate contents than the control. The F113 inocula significantly increased alkaline phosphatase, sulphatase and urease activities, and reduced β glucosidase activities indicating increased carbon availability. Both inocula increased C availability ; however, antibiotic production by strain F113 reduced the utilisation of organic acids released from the plant resulting in differing effects of the two strains on nutrient availability, plant growth, soil enzyme activities and Pseudomonas populations.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
F113 treatment significantly lowered the pea shoot/root ratio.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- F113 treatmente1
- Interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense2symbiont - Outcome
- shoot/root ratioe1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“rhizosphere of pea”
e1“The F113 treatment resulted in a significantly lower shoot/root ratio”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 G22 increased indigenous and total fluorescent Pseudomonas populations relative to control and F113.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- F113 G22 treatmente1
- Interactor
- Pseudomonas
Pseudomonase1symbiont - Outcome
- indigenous and total fluorescent Pseudomonas populatione1
- Direction
- greatere1
- Comparator
- the control and F113 (DAPG+) treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“The F113 G22 treatment had a significantly greater indigenous and total fluorescent Pseudomonas population than the control and F113 (DAPG+) treatment”
Claim · model-written summary
Both strains significantly increased water soluble carbohydrates and total water soluble carbon in pea rhizosphere soil.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Both strainse0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense1symbiont
- Outcome
- water soluble carbohydrates and the total water soluble carbon in the pea rhizosphere soile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both strains significantly increased the water soluble carbohydrates and the total water soluble carbon in the pea rhizosphere soil”
e1“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 increased soil protein content relative to control but not relative to F113 G22.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Strain F113e1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- soil protein contente1
- Direction
- increasede1
- Qualifier
- but not in relation to the F113 G22 treatmente1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“Strain F113 significantly increased the soil protein content relative to the control, but not in relation to the F113 G22 treatment”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 increased organic acid content relative to control and F113 G22.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- F113 treatmente1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- organic acid contente1
- Direction
- greatere1
- Comparator
- the control and F113 G22 treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“The F113 treatment had a significantly greater organic acid content than the control and F113 G22 treatments”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 G22 increased organic acid content relative to control.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- F113 G22 treatmente1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense3symbiont
- Outcome
- organic acid contente2
- Direction
- greatere1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“the F113 G22 treatment was also significantly greater than the control”
e2“organic acid content”
e3“Pseudomonas fluorescens strains”
Claim · model-written summary
Both inocula lowered phosphate content relative to control.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Both inoculae1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- phosphate contentse1
- Direction
- lowere1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“Both inocula resulted in significantly lower phosphate contents than the control”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 increased alkaline phosphatase, sulphatase, and urease activities.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- F113 inoculae1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- alkaline phosphatase, sulphatase and urease activitiese1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“The F113 inocula significantly increased alkaline phosphatase, sulphatase and urease activities”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
F113 reduced beta glucosidase activity.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- F113 inoculae1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- β glucosidase activitiese1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“The F113 inocula significantly increased alkaline phosphatase, sulphatase and urease activities, and reduced β glucosidase activities”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
Both inocula increased carbon availability.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Both inoculae1
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- C availabilitye1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“Both inocula increased C availability”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
Antibiotic production by F113 reduced utilization of organic acids released from pea.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense2symbiont
- Outcome
- utilisation of organic acids released from the plante1
- Qualifier
- antibiotic production by strain F113e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“antibiotic production by strain F113 reduced the utilisation of organic acids released from the plant”
e2“Pseudomonas fluorescens strains”
Claim · model-written summary
The authors infer that F113 antibiotic production caused strain differences in nutrient availability, plant growth, soil enzymes, and Pseudomonas populations.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense3symbiont
- Outcome
- differing effects of the two strains on nutrient availability, plant growth, soil enzyme activities and Pseudomonas populationse1
- Qualifier
- antibiotic production by strain F113e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere of pea”
e1“resulting in differing effects of the two strains on nutrient availability, plant growth, soil enzyme activities and Pseudomonas populations”
e2“antibiotic production by strain F113 reduced the utilisation of organic acids released from the plant”
e3“Pseudomonas fluorescens strains”
The same questions in other papers
inoculation · Pseudomonas fluorescens · Lathyrus oleraceus (pea)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.