Abstract
Abstract Strains of Pseudomonas fluorescens were investigated for biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato both alone and in mixtures. P. fluorescens strains applied to seed, soil and foliage or as a seedling dip significantly reduced TSWV, with a concomitant increase in growth promotion in both the glasshouse and field. Two native strains (CoP-1 and CoT-1) and one foreign strain (CHAO) reduced TSWV. In P. fluorescens-treated tomato plants, increased activity of polyphenol oxidase, β-1,3-glucanase and chitinase was observed, and induction of chitinase was confirmed by western blot analysis. Induction of new protein (18 kDa) detected by SDS–PAGE in P. fluorescens-treated tomato plants was not found in healthy and P. fluorescens-untreated virus inoculated control plants. Indirect ELISA clearly showed a reduction in viral antigen concentration in P. fluorescens-treated tomato plants corresponding to reduced disease ratings. All the P. fluorescens-treated tomato plants also showed enhanced growth and yield compared to control plants. Hence, plant growth promoting rhizobacteria (PGPR) could play a major role in reducing TSWV and increasing yield in tomato plants.
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 8
Claim · model-written summary
P. fluorescens strains significantly reduced tomato spotted wilt virus in tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- P. fluorescens strains applied to seed, soil and foliage or as a seedling dipe1
- Interactor
- tomato spotted wilt virus
Orthotospovirus tomatomaculaee0pathogen - Second interactor
- P. fluorescens
.JPG?width=60)
Pseudomonas fluorescense1biocontrol_agent - Outcome
- TSWVe1
- Direction
- reducede1
- Setting
- glasshouse and fielde2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e1“P. fluorescens strains applied to seed, soil and foliage or as a seedling dip significantly reduced TSWV”
e2“with a concomitant increase in growth promotion in both the glasshouse and field”
Claim · model-written summary
P. fluorescens strains increased growth promotion of tomato in the glasshouse and field.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- P. fluorescens strains appliede1
- Interactor
- P. fluorescensPseudomonas fluorescense1symbiont
- Outcome
- growth promotione2
- Direction
- increasee2
- Setting
- glasshouse and fielde2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e1“P. fluorescens strains applied to seed, soil and foliage or as a seedling dip significantly reduced TSWV”
e2“with a concomitant increase in growth promotion in both the glasshouse and field”
Claim · model-written summary
Two native P. fluorescens strains (CoP-1 and CoT-1) and one foreign strain (CHAO) reduced TSWV in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- CoP-1 and CoT-1e3
- Treatment
- P. fluorescens strainse1
- Interactor
- tomato spotted wilt virusOrthotospovirus tomatomaculaee0pathogen
- Second interactor
- P. fluorescensPseudomonas fluorescense1biocontrol_agent
- Outcome
- TSWVe3
- Direction
- reducede3
- Qualifier
- one foreign strain (CHAO)e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e1“P. fluorescens strains applied to seed, soil and foliage or as a seedling dip significantly reduced TSWV”
e3“Two native strains (CoP-1 and CoT-1) and one foreign strain (CHAO) reduced TSWV”
Claim · model-written summary
P. fluorescens treatment increased the activity of polyphenol oxidase, beta-1,3-glucanase and chitinase in tomato.
- Taxon
- tomatoSolanum lycopersicume4
- Treatment
- P. fluorescens-treatede4
- Interactor
- P. fluorescensPseudomonas fluorescense4biocontrol_agent
- Gene
- polyphenol oxidase, β-1,3-glucanase and chitinasee4
- Outcome
- activitye4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e4“In P. fluorescens-treated tomato plants, increased activity of polyphenol oxidase, β-1,3-glucanase and chitinase was observed”
Claim · model-written summary
Induction of chitinase in tomato was confirmed by western blot analysis.
- Taxon
- tomatoSolanum lycopersicume0
- Gene
- chitinasee5
- Outcome
- induction of chitinasee5
- Qualifier
- confirmed by western blot analysise5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e5“induction of chitinase was confirmed by western blot analysis”
Claim · model-written summary
A new 18 kDa protein was induced in P. fluorescens-treated tomato plants and was absent from healthy and untreated virus-inoculated controls.
- Taxon
- tomatoSolanum lycopersicume6
- Treatment
- P. fluorescens-treatede6
- Interactor
- P. fluorescensPseudomonas fluorescense6biocontrol_agent
- Outcome
- Induction of new protein (18 kDa)e6
- Comparator
- healthy and P. fluorescens-untreated virus inoculated control plantse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Induction of new protein (18 kDa) detected by SDS–PAGE in P. fluorescens-treated tomato plants was not found in healthy and P. fluorescens-untreated virus inoculated control plants”
Claim · model-written summary
P. fluorescens-treated tomato plants showed a reduction in viral antigen concentration by indirect ELISA.
- Taxon
- tomatoSolanum lycopersicume7
- Treatment
- P. fluorescens-treatede7
- Interactor
- tomato spotted wilt virusOrthotospovirus tomatomaculaee0pathogen
- Second interactor
- P. fluorescensPseudomonas fluorescense7biocontrol_agent
- Outcome
- viral antigen concentratione7
- Direction
- reductione7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol efficacy against tomato spotted wilt virus (TSWV) in tomato”
e7“Indirect ELISA clearly showed a reduction in viral antigen concentration in P. fluorescens-treated tomato plants corresponding to reduced disease ratings”
Claim · model-written summary
P. fluorescens-treated tomato plants showed enhanced growth and yield compared with control plants.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- P. fluorescens-treatede1
- Interactor
- P. fluorescensPseudomonas fluorescense1symbiont
- Outcome
- growth and yielde1
- Direction
- enhancede1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All the P. fluorescens-treated tomato plants also showed enhanced growth and yield compared to control plants”
The same questions in other papers
Pseudomonas fluorescens · growth · Solanum lycopersicum (tomato)Positive and negative results
33 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- no effect
32 papers more in this group
See all 36 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.