Abstract
The presence of tumorigenic Agrobacterium was studied in soil of three separate fields used for cultivation of cereals, grass and fruit nursery, respectively. Bacteria were detected with semi-nested PCR-based method and sunflower biotest. They were found in 54–71% of samples originating from stone fruit trees nursery (with crown gall problem), whereas only in 1.4–8.3% of those collected from meadow. The higher percentage of contaminated samples was found when analyses were performed later in spring. Of 168 rye field soil samples only one contained pathogenic Agrobacterium. None of the sunflower seedlings inoculated with bacteria, which were grown on agar medium as a result of introduction water suspension of tested soil samples, showed crown gall symptoms after 30 days from inoculation.
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Claims 5
Claim · model-written summary
Tumorigenic Agrobacterium was detected in 54–71% of stone fruit nursery soil samples.
- Taxon
- stone fruit treese0
- Interactor
- Agrobacterium
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Agrobacteriumt0pathogen - Outcome
- They were founde0
- Value
- 54–71%e0
- Setting
- stone fruit trees nurserye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“They were found in 54–71% of samples originating from stone fruit trees nursery (with crown gall problem)”
t0“Agrobacterium”
Claim · model-written summary
Tumorigenic Agrobacterium was detected in 1.4–8.3% of meadow soil samples.
- Interactor
- AgrobacteriumAgrobacteriumt0pathogen
- Outcome
- those collected from meadowe0
- Value
- 1.4–8.3%e0
- Setting
- meadowe0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas only in 1.4–8.3% of those collected from meadow”
t0“Agrobacterium in soil”
Claim · model-written summary
The fraction of contaminated samples was higher later in spring.
- Interactor
- AgrobacteriumAgrobacteriumt0pathogen
- Outcome
- percentage of contaminated samplese0
- Direction
- highere0
- Setting
- later in springe0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher percentage of contaminated samples was found when analyses were performed later in spring.”
t0“Agrobacterium in soil.”
Claim · model-written summary
One of 168 rye field soil samples contained pathogenic Agrobacterium.
- Taxon
- rye
Secale cerealee0 - Interactor
- AgrobacteriumAgrobacteriume0pathogen
- Outcome
- contained pathogenic Agrobacteriume0
- Value
- onee0
- Setting
- rye fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of 168 rye field soil samples only one contained pathogenic Agrobacterium.”
Claim · model-written summary
No inoculated sunflower seedlings showed crown gall symptoms after 30 days.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- inoculated with bacteriae0
- Outcome
- crown gall symptomse0
- Direction
- Nonee0
- Qualifier
- after 30 days from inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the sunflower seedlings inoculated with bacteria, which were grown on agar medium as a result of introduction water suspension of tested soil samples, showed crown gall symptoms after 30 days from inoculation.”
The same questions in other papers
inoculation · Bacteria · Helianthus annuus (common sunflower)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.