Abstract
BACKGROUND: Maize is one of the staple food crops grown in India. Fusarium verticillioides (Sacc.) Nirenberg is the most important fungal pathogen of maize, associated with diseases such as ear rot and kernel rot. Apart from the disease, it is capable of producing fumonisins, which have elicited considerable attention over the past decade owing to their association with animal disease syndromes. Hence, the present study was conducted to evaluate ecofriendly approaches by using a maize rhizosphere isolate of Pseudomonas fluorescens (Trev.) Mig. and its formulation to control ear rot disease and fumonisin accumulation, and also to study the capacity to promote growth and yield of maize. In vitro assays were conducted to test the efficacy of P. fluorescens as a seed treatment on seed germination, seedling vigour and also the incidence of F. verticillioides in different maize cultivars. The field trials included both seed treatment and foliar spray. For all the experiments, P. fluorescens was formulated using corn starch, wheat bran and talc powder. In each case there were three different treatments of P. fluorescens, a non-treated control and chemical control. RESULTS: Pure culture and the formulations, in comparison with the control, increased plant growth and vigour as measured by seed germination, seedling vigour, plant height, 1000 seed weight and yield. P. fluorescens pure culture used as seed treatment and as spray treatment enhanced the growth parameters and reduced the incidence of F. verticillioides and the level of fumonisins to a maximum extent compared with the other treatments. CONCLUSION: The study demonstrates the potential role of P. fluorescens and its formulations in ear rot disease management. The biocontrol potential of this isolate is more suited for fumonisin reduction in maize kernels intended for human and animal feed.
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Claims 6
Claim · model-written summary
P. fluorescens pure culture and formulations increased seed germination, seedling vigour, and plant height versus control.
- Treatment
- Pure culture and the formulationse0
- Interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescenst0biocontrol_agent - Outcome
- seed germination, seedling vigour, plant heighte0
- Direction
- increasede0
- Comparator
- the controle0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Pure culture and the formulations, in comparison with the control, increased plant growth and vigour as measured by seed germination, seedling vigour, plant height, 1000 seed weight and yield”
t0“maize, by Pseudomonas fluorescens”
Claim · model-written summary
P. fluorescens pure culture and formulations increased 1000 seed weight and yield versus control.
- Treatment
- Pure culture and the formulationse0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescenst0biocontrol_agent
- Outcome
- 1000 seed weight and yielde0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pure culture and the formulations, in comparison with the control, increased plant growth and vigour as measured by seed germination, seedling vigour, plant height, 1000 seed weight and yield”
t0“maize, by Pseudomonas fluorescens”
Claim · model-written summary
P. fluorescens pure culture used as seed treatment or spray enhanced maize growth parameters most among treatments.
- Treatment
- P. fluorescens pure culture used as seed treatment and as spray treatmente0
- Interactor
- P. fluorescensPseudomonas fluorescense0biocontrol_agent
- Outcome
- growth parameterse0
- Direction
- enhancede0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. fluorescens pure culture used as seed treatment and as spray treatment enhanced the growth parameters and reduced the incidence of F. verticillioides and the level of fumonisins to a maximum extent compared with the other treatments”
t0“maize”
Claim · model-written summary
P. fluorescens pure culture seed and spray treatments reduced F. verticillioides incidence most among treatments.
- Treatment
- P. fluorescens pure culture used as seed treatment and as spray treatmente0
- Interactor
- F. verticillioides
Fusarium verticillioidese0pathogen - Second interactor
- P. fluorescensPseudomonas fluorescense0biocontrol_agent
- Outcome
- incidence of F. verticillioidese0
- Direction
- reducede0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. fluorescens pure culture used as seed treatment and as spray treatment enhanced the growth parameters and reduced the incidence of F. verticillioides and the level of fumonisins to a maximum extent compared with the other treatments”
t0“maize”
Claim · model-written summary
P. fluorescens pure culture seed and spray treatments reduced fumonisin levels most among treatments.
- Treatment
- P. fluorescens pure culture used as seed treatment and as spray treatmente0
- Interactor
- P. fluorescensPseudomonas fluorescense0biocontrol_agent
- Outcome
- level of fumonisinse0
- Direction
- reducede0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. fluorescens pure culture used as seed treatment and as spray treatment enhanced the growth parameters and reduced the incidence of F. verticillioides and the level of fumonisins to a maximum extent compared with the other treatments”
t0“maize”
Claim · model-written summary
The authors conclude that P. fluorescens formulations have potential for ear rot management and fumonisin reduction.
- Interactor
- P. fluorescensPseudomonas fluorescense1biocontrol_agent
- Outcome
- fumonisin reduction in maize kernelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biocontrol potential of this isolate is more suited for fumonisin reduction in maize kernels intended for human and animal feed”
e1“P. fluorescens and its formulations in ear rot disease management”
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