Abstract
The Pseudomonas fluorescens isolate Pfl was found to inhibit the growth of pathogen Alternaria palandui, in vitro. In the present study, foliar application of a talc-based formulation of Pfl significantly reduced the incidence of leaf blight of onion, caused by A. palandui. Induction of defense-related proteins viz., chitinase, beta-1,3 glucanase, peroxidase (PO) and polyphenol oxidase (PPO) by application of Pfl, was studied against A. palandui infection in resistant (IHR 56) and susceptible (MDUI) onion cultivars. Chitinase in both cultivars, with or without challenge-inoculation of A. palandui revealed changes in the isoform pattern. The Native-PAGE of PO showed induction of PO2 isoform in both the cultivars, in response to inoculation of pathogen. Isoform analysis of PPO also exhibited induction in the Pfl-treated plants challenged with pathogen. Similarly, the activity of beta-1,3-glucanase was greatly induced in Pfl-treated plants, challenged with pathogen as compared to controls. Thus, the P. fluorescens-treated plants showed significant increase in the levels of the defense enzymes, in comparison to the plants challenged with the pathogen.
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 7
Claim · model-written summary
Pseudomonas fluorescens isolate Pfl inhibited the growth of Alternaria palandui in vitro.
- Taxon
- onion
Allium cepat0 - Treatment
- Pseudomonas fluorescens isolate Pfle0
- Interactor
- Alternaria palanduiAlternaria palanduie0pathogen
- Second interactor
- Pseudomonas fluorescens isolate Pfl
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Outcome
- growth of pathogen Alternaria palanduie0
- Direction
- inhibite0
- Setting
- in vitroe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e0“The Pseudomonas fluorescens isolate Pfl was found to inhibit the growth of pathogen Alternaria palandui, in vitro”
Claim · model-written summary
Foliar application of a talc-based Pfl formulation significantly reduced the incidence of onion leaf blight caused by Alternaria palandui.
- Taxon
- onionAllium cepat0
- Treatment
- foliar application of a talc-based formulation of Pfle1
- Interactor
- A. palanduiAlternaria palanduie1pathogen
- Second interactor
- Pfle1biocontrol_agent
- Outcome
- incidence of leaf blighte1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e1“foliar application of a talc-based formulation of Pfl significantly reduced the incidence of leaf blight of onion, caused by A. palandui”
Claim · model-written summary
Chitinase isoform pattern changed in both onion cultivars, with or without challenge-inoculation of Alternaria palandui.
- Taxon
- onionAllium cepat0
- Interactor
- A. palanduiAlternaria palanduie2pathogen
- Gene
- Chitinasee2
- Outcome
- isoform patterne2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e2“Chitinase in both cultivars, with or without challenge-inoculation of A. palandui revealed changes in the isoform pattern”
Claim · model-written summary
PO2 peroxidase isoform was induced in both onion cultivars in response to pathogen inoculation.
- Taxon
- onionAllium cepat0
- Gene
- PO2e3
- Outcome
- Native-PAGE of POe3
- Direction
- inductione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e3“The Native-PAGE of PO showed induction of PO2 isoform in both the cultivars, in response to inoculation of pathogen”
Claim · model-written summary
Polyphenol oxidase PPO isoform was induced in Pfl-treated onion plants challenged with pathogen.
- Taxon
- onionAllium cepat0
- Treatment
- Pfl-treated plantse4
- Gene
- PPOe4
- Outcome
- Isoform analysis of PPOe4
- Direction
- inductione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e4“Isoform analysis of PPO also exhibited induction in the Pfl-treated plants challenged with pathogen”
Claim · model-written summary
Beta-1,3-glucanase activity was greatly induced in Pfl-treated onion plants challenged with pathogen, compared with controls.
- Taxon
- onionAllium cepat0
- Treatment
- Pfl-treated plantse5
- Gene
- beta-1,3-glucanasee5
- Outcome
- activity of beta-1,3-glucanasee5
- Direction
- greatly inducede5
- Comparator
- controlse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e5“the activity of beta-1,3-glucanase was greatly induced in Pfl-treated plants, challenged with pathogen as compared to controls”
Claim · model-written summary
P. fluorescens-treated onion plants had a significant increase in defence enzyme levels compared with plants challenged with the pathogen.
- Taxon
- onionAllium cepat0
- Treatment
- P. fluorescens-treated plantse6
- Outcome
- levels of the defense enzymese6
- Direction
- significant increasee6
- Comparator
- the plants challenged with the pathogene6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in onion (Allium cepa var aggregatum)”
e6“Thus, the P. fluorescens-treated plants showed significant increase in the levels of the defense enzymes, in comparison to the plants challenged with the pathogen”