Abstract
Verticillium wilt, caused by Verticillium dahliae Kleb., is a problem in many crops and the disease is difficult to control. Strains of Pseudomonas fluorescens and P. putida were previously isolated from root tissues of olive trees, cv. Picual. Some of them are endophytic and can control the highly-virulent, defoliating (D) pathotype of V. dahliae in olive. One mode of action of disease suppression by fluorescent Pseudomonas spp. is induced systemic resistance (ISR). Pseudomonas spp. strains were tested for ISR in a system using Arabidopsis thaliana and the pathogens P. syringae pv. tomato and Botrytis cinerea. To include V. dahliae in these studies we inoculated A. thaliana Col-0 with several isolates of this pathogen belonging to different vegetative compatibility groups (VCG). Isolate V937I (VCG1A, D pathotype) produced severe symptoms in Arabidopsis, and P. fluorescens PICF7 was able to control the disease caused by this virulent isolate. The use of non-ISR expressing accessions and mutants of A. thaliana will allow to evaluate involvement of ISR in control of Verticillium wilt.
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Claims 2
Claim · model-written summary
Verticillium isolate V937I produced severe symptoms in Arabidopsis.
- Taxon
- Arabidopsis
Arabidopsise0 - Interactor
- V937Ie0pathogen
- Outcome
- severe symptoms in Arabidopsise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolate V937I (VCG1A, D pathotype) produced severe symptoms in Arabidopsis”
e1“V. dahliae in these studies”
Claim · model-written summary
P. fluorescens PICF7 controlled disease caused by the virulent Verticillium isolate.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- P. fluorescens PICF7e0
- Interactor
- this virulent isolatee0pathogen
- Second interactor
- P. fluorescens PICF7
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Outcome
- disease caused by this virulent isolatee0
- Direction
- controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“P. fluorescens PICF7 was able to control the disease caused by this virulent isolate.”
t0“using Arabidopsis thaliana”
The same questions in other papers
Pseudomonas fluorescens · disease · ArabidopsisPositive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
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