Abstract
Pseudomonas fluorescens strain Pf-4-R, inhibitory to the growth of the rice bacterial blight pathogen Xanthomonas oryzae pv. oryzae, was developed as a talc-based powder formulation. The efficacy of the formulation in sustaining the population of the Pf-4-R strain in different storage temperature was assessed. The bacterium remained viable and at optimum number for 60 days in the formulated product and storage at low temperature was more effective than room temperature. Colonization of rice roots by the strain Pf-4-R was examined by developing antibiotic rifampicin (rif) resistant mutant. Powder formulation of the mutant was prepared and seed treatment and root dip treatments were given. It was found that once introduced, bioagent was able to establish in the root zone effectively and maintained its count for whole of the crop season
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Claims 4
Claim · model-written summary
Pf-4-R inhibited growth of the rice bacterial blight pathogen.
- Taxon
- Xanthomonas oryzae pv. oryzae
Xanthomonas oryzae pv. oryzaee0 - Interactor
- Pseudomonas fluorescens strain Pf-4-R
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Pseudomonas fluorescense0biocontrol_agent - Outcome
- growth of the rice bacterial blight pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Pseudomonas fluorescens strain Pf-4-R, inhibitory to the growth of the rice bacterial blight pathogen Xanthomonas oryzae pv. oryzae”
Claim · model-written summary
The talc-based formulation kept Pf-4-R viable at an optimum population for 60 days.
- Taxon
- Pseudomonas fluorescensPseudomonas fluorescenst0
- Outcome
- viable and at optimum numbere0
- Value
- 60 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterium remained viable and at optimum number for 60 days in the formulated product”
t0“Pseudomonas fluorescens”
Claim · model-written summary
Low-temperature storage was more effective than room-temperature storage for the formulation.
- Taxon
- Pseudomonas fluorescensPseudomonas fluorescenst0
- Treatment
- storage at low temperaturee0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- room temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“storage at low temperature was more effective than room temperature”
t0“Pseudomonas fluorescens”
Claim · model-written summary
The introduced Pf-4-R bioagent established in the rice root zone and maintained its population throughout the crop season.
- Taxon
- rice
Oryza sativat0 - Interactor
- Pf-4-Rt0symbiont
- Outcome
- establish in the root zone effectively and maintained its count for whole of the crop seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“once introduced, bioagent was able to establish in the root zone effectively and maintained its count for whole of the crop season”
t0“Pf-4-R, a strain of Pseudomonas fluorescens colonizing rice roots”