Abstract
Leaf blight caused by Alternaria helianthi is one of the major diseases of sunflower worldwide. It is responsible for causing upto10-15 per cent yield losses in sunflower. In this study, antagonistic effects of Pseudomonas and Trichoderma isolated from rhizosphere of sunflower were evaluated against Alternaria helianthi as potential biocontrol agents in vitro. Fungal inhibition tests were performed using dual plate culture technique. Overall the culture of Pseudomonas showed the maximum inhibition of 77 per cent on the growth of A. helianthi followed by Trichoderma. Fungicide Dithane M-45 (Mancozeb) was used at three different concentrations of 0.01, 0.05 and 0.1 ppm in inhibiting the radial growth of A. helianthi by poison food technique. All the three concentrations of Mancozeb inhibited the radial growth. Among them, Carbendazim at 0.1ppm was found to be the most effective against the pathogen. The growth parameters (plant height, root length and shoot length) were significantly increased by treating the seeds with bio control agent Pseudomonas compared to the untreated control. Results indicate that PGPR improve growth parameters and can also help in the biocontrol of pathogen.
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Claims 4
Claim · model-written summary
Pseudomonas culture gave the maximum inhibition (77 per cent) of A. helianthi growth, more than Trichoderma
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- culture of Pseudomonase1
- Interactor
- A. helianthiAlternariaster helianthie1pathogen
- Second interactor
- Pseudomonas
Pseudomonase1biocontrol_agent - Outcome
- growth of A. helianthie1
- Direction
- maximum inhibitione1
- Value
- 77 per cente1
- Comparator
- Trichodermae1
- Setting
- in vitroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“leaf blight of sunflower (Helianthus annuus L.)”
e0“antagonistic effects of Pseudomonas and Trichoderma isolated from rhizosphere of sunflower were evaluated against Alternaria helianthi as potential biocontrol agents in vitro”
e1“Overall the culture of Pseudomonas showed the maximum inhibition of 77 per cent on the growth of A. helianthi followed by Trichoderma”
Claim · model-written summary
All three Mancozeb concentrations inhibited radial growth of A. helianthi
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Mancozebe0
- Interactor
- A. helianthiAlternariaster helianthie1pathogen
- Outcome
- radial growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“leaf blight of sunflower (Helianthus annuus L.)”
e0“All the three concentrations of Mancozeb inhibited the radial growth”
e1“inhibiting the radial growth of A. helianthi by poison food technique”
Claim · model-written summary
Carbendazim at 0.1 ppm was the most effective fungicide against A. helianthi
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Carbendazim at 0.1ppme0
- Interactor
- A. helianthiAlternariaster helianthie1pathogen
- Outcome
- effectivee0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“leaf blight of sunflower (Helianthus annuus L.)”
e0“Among them, Carbendazim at 0.1ppm was found to be the most effective against the pathogen”
e1“inhibiting the radial growth of A. helianthi by poison food technique”
Claim · model-written summary
Seed treatment with Pseudomonas significantly increased plant height, root length and shoot length of sunflower
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- treating the seeds with bio control agent Pseudomonase0
- Interactor
- PseudomonasPseudomonase0biocontrol_agent
- Outcome
- growth parameters (plant height, root length and shoot length)e0
- Direction
- significantly increasede0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“leaf blight of sunflower (Helianthus annuus L.)”
e0“The growth parameters (plant height, root length and shoot length) were significantly increased by treating the seeds with bio control agent Pseudomonas compared to the untreated control”
The same questions in other papers
Pseudomonas · growth · Helianthus annuus (common sunflower)Results agree
2 papers in the same direction as this paper
- positive
- positive
carbendazim · Alternariaster helianthi · Helianthus annuus (common sunflower)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →mancozeb · Alternariaster helianthi · Helianthus annuus (common sunflower)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.