Paper · 2026 · Egyptian Journal of Agricultural Sciences /Egyptian Journal of Agricultural Sciences

Potential of Plant Growth –Promoting Bacteria (PGPB) as a Sustainable Strategy for Managing Tomato Root Rot

Rasha Samir Mohamed; Mona Fekry Ghazal; Mohamed Salah Attia; et al.

14
claims
29
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

Biological control with (PGPB) is a renewable and eco-friendly alternative to chemical pesticides for managing soil-borne diseases. In this study, Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions. The combined application of B. cereus and Arthrobacter sp. was the most effective against Fusarium rot, reducing the disease index to 17.5% (79.4% protection). The treatment of B. cereus + Arthrobacter sp. recorded the highest total chlorophyll ( 34.26±0.43 mg g⁻¹ of plant tissue), shoot and root length (122.00± 1.32 and 41.00 ± 2 cm, respectively) as well as shoot fresh and dry weight (57.03±0.9g and 19.62±0.2 g, respectively) and root fresh and dry weight (32.9±0.3g and 13.13±0.2g respectively). On the other hand, the greatest content of free proline content ( 8.33±0.57 mg g ¹ of plant tissue) and total phenolic compounds (153.34±0.01mgg-1tissue), peroxidase (0.44 min g⁻¹of plant tissue), polyphenol oxidase (0.89 min per gram of plant tissue) enzymes in tomato leaves were recorded by the treatment of both bacterial strains associated with the pathogenic fungus. Soil enzyme analyses revealed a significant increase in dehydrogenase (1.150 TPF g⁻¹ dry rhizosphere soil⁻¹ day⁻¹) in the treatment of B. cereus + Arthrobacter sp. treatment. While chitinase and protease activities decreased to 0.63±0.01 and 2.77±0.28c U g-1 h 1, respectively, in the same treatment due to the absence of pathogenic fungus. Anatomical studies confirmed that bacterial inoculations enhanced the size of xylem and phloem tissues.

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 14

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined B. cereus and Arthrobacter sp. treatment reduces the tomato Fusarium disease index to 17.5%.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
combined application of B. cereus and Arthrobacter sp.e1
Interactor
FusariumFusariume1pathogen
Second interactor
Bacillus cereusBacillus cereuse0biocontrol_agent
Outcome
disease indexe1
Direction
reducinge1
Value
17.5%e1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗
Bacillus cereus
Bacillus cereus · Second interactorMogana Das Murtey and Patchamuthu Ramasamy · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e1

“The combined application of B. cereus and Arthrobacter sp. was the most effective against Fusarium rot, reducing the disease index to 17.5% (79.4% protection)”

✓ located verbatim in the source · abstract, characters 310–468 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined B. cereus and Arthrobacter sp. treatment gives 79.4% protection against tomato Fusarium rot.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
combined application of B. cereus and Arthrobacter sp.e1
Interactor
FusariumFusariume1pathogen
Second interactor
Bacillus cereusBacillus cereuse0biocontrol_agent
Outcome
protectione1
Direction
increaseinferrede1
Value
79.4%e1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗
Bacillus cereus
Bacillus cereus · Second interactorMogana Das Murtey and Patchamuthu Ramasamy · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e1

“The combined application of B. cereus and Arthrobacter sp. was the most effective against Fusarium rot, reducing the disease index to 17.5% (79.4% protection)”

✓ located verbatim in the source · abstract, characters 310–468 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment gives the highest total chlorophyll in tomato leaves.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e2
Outcome
total chlorophylle2
Direction
higheste2
Value
34.26±0.43 mg g⁻¹e2

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e2

“The treatment of B. cereus + Arthrobacter sp. recorded the highest total chlorophyll ( 34.26±0.43 mg g⁻¹ of plant tissue)”

✓ located verbatim in the source · abstract, characters 470–591 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment gives the highest shoot and root length of tomato.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e2
Outcome
shoot and root lengthe3
Direction
higheste2
Value
122.00± 1.32 and 41.00 ± 2 cme3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e2

“The treatment of B. cereus + Arthrobacter sp. recorded the highest total chlorophyll ( 34.26±0.43 mg g⁻¹ of plant tissue)”

✓ located verbatim in the source · abstract, characters 470–591 · show in text ↑
e3

“shoot and root length (122.00± 1.32 and 41.00 ± 2 cm, respectively)”

✓ located verbatim in the source · abstract, characters 593–660 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment gives the highest shoot fresh and dry weight of tomato.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e2
Outcome
shoot fresh and dry weighte4
Direction
higheste2
Value
57.03±0.9g and 19.62±0.2 ge4

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e2

“The treatment of B. cereus + Arthrobacter sp. recorded the highest total chlorophyll ( 34.26±0.43 mg g⁻¹ of plant tissue)”

✓ located verbatim in the source · abstract, characters 470–591 · show in text ↑
e4

“shoot fresh and dry weight (57.03±0.9g and 19.62±0.2 g, respectively)”

✓ located verbatim in the source · abstract, characters 672–741 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment gives the highest root fresh and dry weight of tomato.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e2
Outcome
root fresh and dry weighte5
Direction
higheste2
Value
32.9±0.3g and 13.13±0.2ge5

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e2

“The treatment of B. cereus + Arthrobacter sp. recorded the highest total chlorophyll ( 34.26±0.43 mg g⁻¹ of plant tissue)”

✓ located verbatim in the source · abstract, characters 470–591 · show in text ↑
e5

“root fresh and dry weight (32.9±0.3g and 13.13±0.2g respectively)”

✓ located verbatim in the source · abstract, characters 746–811 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both bacterial strains together give the greatest free proline content in tomato leaves.

Organ / stage
leavese3
Treatment
both bacterial strainse3
Outcome
free proline contente3
Direction
greateste3
Value
8.33±0.57 mg g ¹e3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“the greatest content of free proline content ( 8.33±0.57 mg g ¹ of plant tissue) and total phenolic compounds (153.34±0.01mgg-1tissue), peroxidase (0.44 min g⁻¹of plant tissue), polyphenol oxidase (0.89 min per gram of plant tissue) enzymes in tomato leaves were recorded by the treatment of both bacterial strains”

✓ located verbatim in the source · abstract, characters 832–1146 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both bacterial strains together give the greatest total phenolic compound content in tomato leaves.

Organ / stage
leavese3
Treatment
both bacterial strainse3
Outcome
total phenolic compoundse3
Direction
greateste3
Value
153.34±0.01mgg-1tissuee3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“the greatest content of free proline content ( 8.33±0.57 mg g ¹ of plant tissue) and total phenolic compounds (153.34±0.01mgg-1tissue), peroxidase (0.44 min g⁻¹of plant tissue), polyphenol oxidase (0.89 min per gram of plant tissue) enzymes in tomato leaves were recorded by the treatment of both bacterial strains”

✓ located verbatim in the source · abstract, characters 832–1146 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both bacterial strains together give the greatest peroxidase activity in tomato leaves.

Organ / stage
leavese3
Treatment
both bacterial strainse3
Outcome
peroxidasee3
Direction
greateste3
Value
0.44 min g⁻¹of plant tissuee3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“the greatest content of free proline content ( 8.33±0.57 mg g ¹ of plant tissue) and total phenolic compounds (153.34±0.01mgg-1tissue), peroxidase (0.44 min g⁻¹of plant tissue), polyphenol oxidase (0.89 min per gram of plant tissue) enzymes in tomato leaves were recorded by the treatment of both bacterial strains”

✓ located verbatim in the source · abstract, characters 832–1146 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both bacterial strains together give the greatest polyphenol oxidase activity in tomato leaves.

Organ / stage
leavese3
Treatment
both bacterial strainse3
Outcome
polyphenol oxidasee3
Direction
greateste3
Value
0.89 min per gram of plant tissuee3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“the greatest content of free proline content ( 8.33±0.57 mg g ¹ of plant tissue) and total phenolic compounds (153.34±0.01mgg-1tissue), peroxidase (0.44 min g⁻¹of plant tissue), polyphenol oxidase (0.89 min per gram of plant tissue) enzymes in tomato leaves were recorded by the treatment of both bacterial strains”

✓ located verbatim in the source · abstract, characters 832–1146 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment significantly increases dehydrogenase activity in tomato rhizosphere soil.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Organ / stage
rhizosphere soile4
Treatment
B. cereus + Arthrobacter sp.e4
Outcome
dehydrogenasee4
Direction
increasee4
Value
1.150 TPF g⁻¹ dry rhizosphere soil⁻¹ day⁻¹e4

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e4

“Soil enzyme analyses revealed a significant increase in dehydrogenase (1.150 TPF g⁻¹ dry rhizosphere soil⁻¹ day⁻¹) in the treatment of B. cereus + Arthrobacter sp. treatment”

✓ located verbatim in the source · abstract, characters 1186–1359 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment decreases chitinase activity in the absence of the pathogenic fungus.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e4
Outcome
chitinasee5
Direction
decreasede5
Value
0.63±0.01e5
Qualifier
due to the absence of pathogenic funguse5

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e4

“Soil enzyme analyses revealed a significant increase in dehydrogenase (1.150 TPF g⁻¹ dry rhizosphere soil⁻¹ day⁻¹) in the treatment of B. cereus + Arthrobacter sp. treatment”

✓ located verbatim in the source · abstract, characters 1186–1359 · show in text ↑
e5

“While chitinase and protease activities decreased to 0.63±0.01 and 2.77±0.28c U g-1 h 1, respectively, in the same treatment due to the absence of pathogenic fungus”

✓ located verbatim in the source · abstract, characters 1361–1525 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The B. cereus + Arthrobacter sp. treatment decreases protease activity in the absence of the pathogenic fungus.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Treatment
B. cereus + Arthrobacter sp.e4
Outcome
protease activitiese5
Direction
decreasede5
Value
2.77±0.28c U g-1 h 1e5
Qualifier
due to the absence of pathogenic funguse5

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e4

“Soil enzyme analyses revealed a significant increase in dehydrogenase (1.150 TPF g⁻¹ dry rhizosphere soil⁻¹ day⁻¹) in the treatment of B. cereus + Arthrobacter sp. treatment”

✓ located verbatim in the source · abstract, characters 1186–1359 · show in text ↑
e5

“While chitinase and protease activities decreased to 0.63±0.01 and 2.77±0.28c U g-1 h 1, respectively, in the same treatment due to the absence of pathogenic fungus”

✓ located verbatim in the source · abstract, characters 1361–1525 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacterial inoculation enhances the size of xylem and phloem tissues in tomato.

Taxon
tomato (Solanum lycopersicum)Solanum lycopersicume0
Organ / stage
xylem and phloem tissuese6
Treatment
bacterial inoculationse6
Outcome
size of xylem and phloem tissuese6
Direction
enhancede6

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Bacillus cereus, Arthrobacter sp., and their combination were tested against Fusarium wilt in tomato (Solanum lycopersicum) under healthy and diseased conditions”

✓ located verbatim in the source · abstract, characters 147–308 · show in text ↑
e6

“Anatomical studies confirmed that bacterial inoculations enhanced the size of xylem and phloem tissues”

✓ located verbatim in the source · abstract, characters 1527–1629 · show in text ↑

Bacillus cereus · Fusarium · Solanum lycopersicum (tomato)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 →

Bacillus cereus · physiology: pigments · Solanum lycopersicum (tomato)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 →

Arthrobacter · growth · Solanum lycopersicum (tomato)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 →

Bacillus cereus · growth · Solanum lycopersicum (tomato)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

inoculation · physiology: osmolytes · Solanum lycopersicum (tomato)Positive and negative results

32 papers: 31 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

28 papers more in this group

See all 32 papers →

inoculation · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results

53 papers: 49 positive, 4 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

49 papers more in this group

See all 53 papers →

inoculation · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results

54 papers: 51 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. no effect

50 papers more in this group

See all 54 papers →

inoculation · growth · Solanum lycopersicum (tomato)Positive and negative results

441 papers: 387 positive, 54 negative or no effect

386 papers in the same direction as this paper · 53 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

437 papers more in this group

See all 441 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.