Abstract
Abstract Plant growth promoting fluorescent pseudomonad strains Pf1, TDK1 and PY15 were evaluated for their efficacy against leaffolder ( Cnaphalocrocis medinalis ) pest in rice plants under field conditions individually and in combinations. Application of mixtures of Pseudomonas fluorescens strains Pf1, TDK1 and PY15 significantly reduced the leaffolder damage in rice plants compared with untreated control. Interestingly, natural enemy population in plots treated with P. fluorescens was greater than the chemical and untreated controls. Further, support for these results was gathered by assaying activities of polyphenol oxidase (PPO) and lipoxygenase (LOX) under glasshouse conditions. The results showed the higher activity of PPO and LOX in plants treated with P. fluorescens mixtures (Pf1 + TDK1 + PY15) than the plants treated with individual strains, chemical and untreated controls. Further, fluorescent pseudomonad mixtures increased the rice yield compared with individual strain and non‐bacterized treatments. The present study reveals that in addition to plant growth promotion, plant growth‐promoting rhizobacterial (PGPR) strains‐mediated induction of PPO and LOX in rice plants could be involved in enhanced natural enemy populations and resistance mechanisms against leaffolder attack.
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Claims 4
Claim · model-written summary
Mixed Pseudomonas strains significantly reduced leaffolder damage relative to untreated rice.
- Taxon
- rice
Oryza sativae0 - Treatment
- Application of mixtures of Pseudomonas fluorescens strains Pf1, TDK1 and PY15e0
- Outcome
- leaffolder damagee0
- Direction
- reducede0
- Comparator
- untreated controle0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of mixtures of Pseudomonas fluorescens strains Pf1, TDK1 and PY15 significantly reduced the leaffolder damage in rice plants compared with untreated control.”
Claim · model-written summary
Natural enemy populations were greater after P. fluorescens treatment than chemical or untreated controls.
- Treatment
- P. fluorescense0
- Outcome
- natural enemy populatione0
- Direction
- greatere0
- Comparator
- chemical and untreated controlse0
Not reportedTaxon
Verbatim
e0“natural enemy population in plots treated with P. fluorescens was greater than the chemical and untreated controls.”
Claim · model-written summary
PPO and LOX activity was higher with the Pseudomonas mixture than individual, chemical or untreated controls.
- Treatment
- P. fluorescens mixtures (Pf1 + TDK1 + PY15)e0
- Outcome
- activity of PPO and LOXe0
- Direction
- highere0
- Comparator
- individual strains, chemical and untreated controlse0
Not reportedTaxon
Verbatim
e0“higher activity of PPO and LOX in plants treated with P. fluorescens mixtures (Pf1 + TDK1 + PY15) than the plants treated with individual strains, chemical and untreated controls.”
Claim · model-written summary
Fluorescent pseudomonad mixtures increased rice yield relative to individual strain and non bacterized treatments.
- Taxon
- riceOryza sativae0
- Treatment
- fluorescent pseudomonad mixturese0
- Outcome
- rice yielde0
- Direction
- increasede0
- Comparator
- individual strain and non‐bacterized treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fluorescent pseudomonad mixtures increased the rice yield compared with individual strain and non‐bacterized treatments.”
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See all 6 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.