Paper · 2021 · Scientific Reports

Co-inoculation of rhizobacteria promotes growth, yield, and nutrient contents in soybean and improves soil enzymes and nutrients under drought conditions

Dilfuza Jabborova; Annapurna Kannepalli; Kakhramon Davranov; et al.

8
claims
14
verbatim quotes
168
citations
3
research areas
✓
Open access · cc-by

Abstract

Drought stress is the major abiotic factor limiting crop production. Co-inoculating crops with nitrogen fixing bacteria and plant growth-promoting rhizobacteria (PGPR) improves plant growth and increases drought tolerance in arid or semiarid areas. Soybean is a major source of high-quality protein and oil for humans. It is susceptible to drought stress conditions. The co-inoculation of drought-stressed soybean with nodulating rhizobia and root-colonizing, PGPR improves the root and the shoot growth, formation of nodules, and nitrogen fixation capacity in soybean. The present study was aimed to observe if the co-inoculation of soybean (Glycine max L. (Merr.) nodulating with Bradyrhizobium japonicum USDA110 and PGPR Pseudomonas putida NUU8 can enhance drought tolerance, nodulation, plant growth, and nutrient uptake under drought conditions. The results of the study showed that co-inoculation with B. japonicum USDA110 and P. putida NUU8 gave more benefits in nodulation and growth of soybean compared to plants inoculated with B. japonicum USDA110 alone and uninoculated control. Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed. Co-inoculation with B. japonicum, USDA 110 and P. putida NUU8 significantly enhanced plant and soil nutrients and soil enzymes compared to control under normal and drought stress conditions. The synergistic use of B. japonicum USDA110 and P. putida NUU8 improves plant growth and nodulation of soybean under drought stress conditions. The results suggested that these strains could be used to formulate a consortium of biofertilizers for sustainable production of soybean under drought-stressed field conditions.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Co-inoculation improved soybean nodulation and growth over rhizobial inoculation alone and the uninoculated control.

Taxon
soybeanGlycine maxe0
Treatment
co-inoculation with B. japonicum USDA110 and P. putida NUU8e0
Interactor
B. japonicum USDA110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
nodulation and growthe0
Direction
more benefitse0
Comparator
plants inoculated with B. japonicum USDA110 alone and uninoculated controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“co-inoculation with B. japonicum USDA110 and P. putida NUU8 gave more benefits in nodulation and growth of soybean compared to plants inoculated with B. japonicum USDA110 alone and uninoculated control”

✓ located verbatim in the source · abstract, characters 888–1089 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced soybean root length by 56% under drought.

Taxon
soybeanGlycine maxt0
Treatment
co-inoculation of B. japonicum USDA 110 and P. putida NUU8e0
Interactor
B. japonicum USDA 110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
root lengthe0
Direction
enhancede0
Value
56%e0
Comparator
the controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed.”

✓ located verbatim in the source · abstract, characters 1091–1362 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced soybean shoot length by 33% under drought.

Taxon
soybeanGlycine maxt0
Treatment
co-inoculation of B. japonicum USDA 110 and P. putida NUU8e0
Interactor
B. japonicum USDA 110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
shoot lengthe0
Direction
enhancede0
Value
33%e0
Comparator
the controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed.”

✓ located verbatim in the source · abstract, characters 1091–1362 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced soybean root dry weight by 47% under drought.

Taxon
soybeanGlycine maxt0
Treatment
co-inoculation of B. japonicum USDA 110 and P. putida NUU8e0
Interactor
B. japonicum USDA 110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
root dry weighte0
Direction
enhancede0
Value
47%e0
Comparator
the controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed.”

✓ located verbatim in the source · abstract, characters 1091–1362 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced soybean shoot dry weight by 48% under drought.

Taxon
soybeanGlycine maxt0
Treatment
co-inoculation of B. japonicum USDA 110 and P. putida NUU8e0
Interactor
B. japonicum USDA 110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
shoot dry weighte0
Direction
enhancede0
Value
48%e0
Comparator
the controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed.”

✓ located verbatim in the source · abstract, characters 1091–1362 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced soybean nodule number by 17% under drought.

Taxon
soybeanGlycine maxt0
Treatment
co-inoculation of B. japonicum USDA 110 and P. putida NUU8e0
Interactor
B. japonicum USDA 110Bradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
nodule numbere0
Direction
enhancede0
Value
17%e0
Comparator
the controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed.”

✓ located verbatim in the source · abstract, characters 1091–1362 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Co-inoculation significantly enhanced plant and soil nutrients and soil enzymes under normal and drought conditions.

Taxon
soybeanGlycine maxt0
Treatment
Co-inoculation with B. japonicum, USDA 110 and P. putida NUU8e0
Interactor
B. japonicumBradyrhizobium japonicume0symbiont
Second interactor
P. putida NUU8Pseudomonas putidae0symbiont
Outcome
plant and soil nutrients and soil enzymese0
Direction
enhancede0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗
Bradyrhizobium japonicum
Bradyrhizobium japonicum · InteractorLouisa Howard - Dartmouth Electron Microscope Facility · Public domain · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Co-inoculation with B. japonicum, USDA 110 and P. putida NUU8 significantly enhanced plant and soil nutrients and soil enzymes compared to control under normal and drought stress conditions.”

✓ located verbatim in the source · abstract, characters 1363–1553 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 81–88 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors suggest using the strains as a biofertilizer consortium for soybean production under drought.

Taxon
soybeanGlycine maxe0
Outcome
consortium of biofertilizers for sustainable production of soybeane0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“these strains could be used to formulate a consortium of biofertilizers for sustainable production of soybean under drought-stressed field conditions”

✓ located verbatim in the source · abstract, characters 1725–1874 · show in text ↑

Bradyrhizobium japonicum · growth · Glycine max (soybean)Results differ

46 papers: 43 positive, 3 negative or no effect

42 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. no effect

42 papers more in this group

See all 46 papers →

Bradyrhizobium japonicum · physiology: enzyme activity · Glycine max (soybean)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

4 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
  3. positive

2 papers more in this group

See all 6 papers →

Bradyrhizobium japonicum · symbiosis · Glycine max (soybean)Positive and negative results

50 papers: 46 positive, 4 negative or no effect

45 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. no effect

46 papers more in this group

See all 50 papers →

Pseudomonas putida · physiology: enzyme activity · Glycine max (soybean)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

Pseudomonas putida · symbiosis · Glycine max (soybean)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

Pseudomonas putida · growth · Glycine max (soybean)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

inoculation · physiology: enzyme activity · Glycine max (soybean)Positive and negative results

31 papers: 29 positive, 2 negative or no effect

28 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative

27 papers more in this group

See all 31 papers →

inoculation · symbiosis · Glycine max (soybean)Positive and negative results

310 papers: 265 positive, 45 negative or no effect

264 papers in the same direction as this paper · 43 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. positive
  3. positive

306 papers more in this group

See all 310 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.