Abstract
The control of common scab (CS) of potatoes includes resistant cultivars, specific fertilization, increase of soil moisture and chemical treatments. Yet, these management practices do not have common or reproducible results at differing sites. In order to determine the effects of soil organic matter, iron and pH on CS development, peat and DTPA-chelated iron were supplemented to pots filled with soil conducive for CS. All results were compared with the same data obtained for a suppressive soil, which has naturally low severity of CS and occurs nearby. Bacteria, Actinobacteria and the txtB genes from the biosynthetic cluster of thaxtomin, which is responsible for the disease development, were quantified by qPCR in tuberosphere soil and potato periderm. Illumina amplicon sequencing of bacterial 16S rRNA genes was performed for tuberosphere soils. Both peat and iron supplements controlled potato scab, and the combination of the two supplements reduced CS most effectively. The bacterial community was modified by all treatments but the highest number of operational taxonomic units (OTUs) changed towards the suppressive soil after the combined peat and iron treatment. It seemed that iron supplement supported plant defense while both iron and peat additions changed the bacterial community in favor of CS suppression.
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Claims 8
Claim · model-written summary
Peat supplements controlled potato scab.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- peate0
- Outcome
- potato scabe0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both peat and iron supplements controlled potato scab”
Claim · model-written summary
Iron supplements controlled potato scab.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- iron supplementse0
- Outcome
- potato scabe0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both peat and iron supplements controlled potato scab”
Claim · model-written summary
Combining peat and iron reduced common scab most effectively.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- combination of the two supplementse0
- Outcome
- CSe0
- Direction
- reducede0
- Qualifier
- most effectivelye0
- Comparator
- peat and iron supplementse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both peat and iron supplements controlled potato scab, and the combination of the two supplements reduced CS most effectively.”
Claim · model-written summary
All treatments modified the bacterial community.
Not reportedComparatorDirection
Verbatim
e0“The bacterial community was modified by all treatments”
Claim · model-written summary
The combined peat and iron treatment produced the highest number of OTU changes toward the suppressive-soil community.
- Treatment
- combined peat and iron treatmente0
- Outcome
- number of operational taxonomic units (OTUs)e0
- Direction
- higheste0
- Qualifier
- towards the suppressive soile0
Not reportedTaxonComparator
Verbatim
e0“the highest number of operational taxonomic units (OTUs) changed towards the suppressive soil after the combined peat and iron treatment.”
Claim · model-written summary
Iron supplementation appeared to support plant defense.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- iron supplemente0
- Outcome
- plant defensee0
- Qualifier
- It seemede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It seemed that iron supplement supported plant defense”
t0“potato”
Claim · model-written summary
Iron additions appeared to change the bacterial community in favor of common-scab suppression.
Verbatim
e0“It seemed that iron supplement supported plant defense while both iron and peat additions changed the bacterial community in favor of CS suppression.”
Claim · model-written summary
Peat additions appeared to change the bacterial community in favor of common-scab suppression.
Verbatim
e0“It seemed that iron supplement supported plant defense while both iron and peat additions changed the bacterial community in favor of CS suppression.”
The same questions in other papers
iron atom · disease · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
growing medium · disease · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
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.