Abstract
Abstract Rhizosphere dwelling bacteria can increase plant resistance to biotic and abiotic stresses, and they promote plant growth through various mechanisms. In this study, three bioassays were conducted including the following: (a) screening for effective bacterial isolates in the suppression of broomrape, (b) evaluating induced systemic resistance against broomrape and (c) comparing the selected bacterium isolate with plant chemical inducers. Fifteen plant growth‐promoting rhizobacteria (PGPR) were examined to assess their biocontrol potential against Egyptian broomrape ( Phelipanche aegyptiaca ). Ten isolates significantly reduced the broomrape biomass compared to the control. The Lysinibacillus boronitolerans B124 reduced the dry weight of broomrape plants from 2.15 g in control to 0.45 g. Bacillus megaterium B6 was the best isolate in reducing the number of broomrape tubercles. In addition, the activity of three selected bacterial isolates was investigated in induced systemic resistance to broomrape by split‐root method. The Bacillus pumilus INR7 reduced the number of visible broomrape tubercles by 90%, and B. megaterium B71 and L. boronitolerans B124 were the next two in rank. Compared with the control, L. boronitolerans B124 reduced the dry weight of broomrape from 1.49 g in control to 0.39 g. In a subsequent experiment, L. boronitolerans B124 was evaluated along with some resistance‐inducing volatile compounds. Lysinibacillus boronitolerans B124 decreased the number of broomrapes by 87% on average, while the lowest dry weight of broomrape was observed in methyl jasmonate treatment. In conclusion, PGPR have considerable potential to be used in the integrated management of broomrape. It is also possible to use a mixture of rhizobacteria and defence inducers, such as biogenic volatiles as a promising approach in the management of this noxious parasitic weed.
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Claims 11
Claim · model-written summary
Ten bacterial isolates significantly reduced Egyptian broomrape biomass relative to control in tomato assays.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Ten isolatese0
- Interactor
- broomrapee0parasite
- Outcome
- broomrape biomasse0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ten isolates significantly reduced the broomrape biomass compared to the control.”
t0“tomato”
Claim · model-written summary
Lysinibacillus boronitolerans B124 reduced broomrape dry weight from 2.15 g to 0.45 g.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Lysinibacillus boronitolerans B124e0
- Interactor
- broomrapee0parasite
- Second interactor
- Lysinibacillus boronitolerans B124Lysinibacillus boronitoleranse0biocontrol_agent
- Outcome
- dry weight of broomrape plantse0
- Direction
- reducede0
- Value
- 0.45 ge0
- Qualifier
- 2.15 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Lysinibacillus boronitolerans B124 reduced the dry weight of broomrape plants from 2.15 g in control to 0.45 g.”
t0“tomato”
Claim · model-written summary
Bacillus megaterium B6 was the best isolate for reducing broomrape tubercle number.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus megaterium B6e0
- Interactor
- broomrapee0parasite
- Second interactor
- Bacillus megaterium B6
Priestia megateriume0biocontrol_agent - Outcome
- number of broomrape tuberclese0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacillus megaterium B6 was the best isolate in reducing the number of broomrape tubercles.”
t0“tomato”
Claim · model-written summary
Bacillus pumilus INR7 reduced visible broomrape tubercles by 90%.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Bacillus pumilus INR7e0
- Interactor
- broomrapee0parasite
- Second interactor
- Bacillus pumilus INR7Bacillus pumilus INR7e0biocontrol_agent
- Outcome
- number of visible broomrape tuberclese0
- Direction
- reducede0
- Value
- 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Bacillus pumilus INR7 reduced the number of visible broomrape tubercles by 90%”
t0“tomato”
Claim · model-written summary
Bacillus megaterium B71 ranked next after B. pumilus INR7 in reducing broomrape tubercles.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- B. megaterium B71e0
- Interactor
- broomrapee0parasite
- Outcome
- next two in ranke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Bacillus pumilus INR7 reduced the number of visible broomrape tubercles by 90%, and B. megaterium B71 and L. boronitolerans B124 were the next two in rank.”
t0“tomato”
Claim · model-written summary
Lysinibacillus boronitolerans B124 ranked after B. pumilus INR7 in reducing broomrape tubercles.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- L. boronitolerans B124e0
- Interactor
- broomrapee0parasite
- Outcome
- next two in ranke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Bacillus pumilus INR7 reduced the number of visible broomrape tubercles by 90%, and B. megaterium B71 and L. boronitolerans B124 were the next two in rank.”
t0“tomato”
Claim · model-written summary
L. boronitolerans B124 reduced broomrape dry weight from 1.49 g to 0.39 g in the systemic resistance assay.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- L. boronitolerans B124e0
- Interactor
- broomrapee0parasite
- Second interactor
- L. boronitolerans B124Lysinibacillus boronitoleranse0biocontrol_agent
- Outcome
- dry weight of broomrapee0
- Direction
- reducede0
- Value
- 0.39 ge0
- Qualifier
- 1.49 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control, L. boronitolerans B124 reduced the dry weight of broomrape from 1.49 g in control to 0.39 g.”
t0“tomato”
Claim · model-written summary
Lysinibacillus boronitolerans B124 decreased broomrape number by 87% on average.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Lysinibacillus boronitolerans B124e0
- Interactor
- broomrapese0parasite
- Second interactor
- Lysinibacillus boronitolerans B124Lysinibacillus boronitoleranse0biocontrol_agent
- Outcome
- number of broomrapese0
- Direction
- decreasede0
- Value
- 87%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lysinibacillus boronitolerans B124 decreased the number of broomrapes by 87% on average”
t0“tomato”
Claim · model-written summary
Methyl jasmonate treatment yielded the lowest broomrape dry weight.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- methyl jasmonate treatmente0
- Interactor
- broomrapee0parasite
- Outcome
- dry weight of broomrapee0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest dry weight of broomrape was observed in methyl jasmonate treatment.”
t0“tomato”
Claim · model-written summary
The authors proposed PGPR for integrated broomrape management.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- broomrapee0parasite
- Outcome
- integrated management of broomrapee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PGPR have considerable potential to be used in the integrated management of broomrape.”
t0“tomato”
Claim · model-written summary
The authors proposed combining rhizobacteria and defense inducers for broomrape management.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- parasitic weede0parasite
- Outcome
- mixture of rhizobacteria and defence inducerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is also possible to use a mixture of rhizobacteria and defence inducers, such as biogenic volatiles as a promising approach in the management of this noxious parasitic weed.”
t0“tomato”
The same questions in other papers
(-)-methyl jasmonate · growth · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 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.