Abstract
This study aimed to evaluate the potential of ulvan to control the bean Fusarium wilt caused by Fusarium oxysporum f. sp. phaseoli (Fop) as well as their effect on seedling emergence. Seed soaking was carried out for 4 h before sowing, whereas soil irrigation or foliar spraying were performed at 12 days after sowing. Ulvan reduced the disease severity when sprayed onto leaves but did not show significant effect when applied via seed soaking or soil irrigation. However, when soaked in seeds, ulvan enhanced seedling emergence by 55%, 30% and 44% on Fop-infested, non-infested and sterilized substrate, respectively. The effect of ulvan spray frequency on Fusarium wilt progress and fungal colonization was analyzed in follow-up assays. Our results revealed that one, two or three applications of ulvan similarly protected bean plants by reducing Fop-colonization at earlier, but not at later phenological stages. As a consequence, ulvan significantly decreased the area under disease progress curve by 27%. Possible reasons why this protective effect can be obtained in certain circumstances are discussed.
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Claims 8
Claim · model-written summary
Foliar ulvan reduced Fusarium wilt severity.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- Ulvane0
- Interactor
- Fusarium oxysporum f. sp. phaseoli
Fusarium oxysporum f. sp. phaseolit0pathogen - Outcome
- disease severitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ulvan reduced the disease severity when sprayed onto leaves”
t0“Fusarium oxysporum f. sp. phaseoli on common bean”
Claim · model-written summary
Ulvan seed soaking did not significantly affect disease severity.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- seed soakinge0
- Interactor
- Fusarium oxysporum f. sp. phaseoliFusarium oxysporum f. sp. phaseolit0pathogen
- Outcome
- disease severitye0
- Direction
- did not show significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ulvan reduced the disease severity when sprayed onto leaves but did not show significant effect when applied via seed soaking or soil irrigation.”
t0“Fusarium oxysporum f. sp. phaseoli on common bean”
Claim · model-written summary
Ulvan soil irrigation did not significantly affect disease severity.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- soil irrigatione0
- Interactor
- Fusarium oxysporum f. sp. phaseoliFusarium oxysporum f. sp. phaseolit0pathogen
- Outcome
- disease severitye0
- Direction
- did not show significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ulvan reduced the disease severity when sprayed onto leaves but did not show significant effect when applied via seed soaking or soil irrigation.”
t0“Fusarium oxysporum f. sp. phaseoli on common bean”
Claim · model-written summary
Ulvan seed soaking enhanced emergence by 55% on Fop-infested substrate.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- ulvane0
- Interactor
- Fope0pathogen
- Outcome
- seedling emergencee0
- Direction
- enhancede0
- Value
- 55%e0
- Setting
- Fop-infestede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when soaked in seeds, ulvan enhanced seedling emergence by 55%, 30% and 44% on Fop-infested, non-infested and sterilized substrate, respectively.”
t0“common bean”
Claim · model-written summary
Ulvan seed soaking enhanced emergence by 30% on non-infested substrate.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- ulvane0
- Outcome
- seedling emergencee0
- Direction
- enhancede0
- Value
- 30%e0
- Setting
- non-infestede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when soaked in seeds, ulvan enhanced seedling emergence by 55%, 30% and 44% on Fop-infested, non-infested and sterilized substrate, respectively.”
t0“common bean”
Claim · model-written summary
Ulvan seed soaking enhanced emergence by 44% on sterilized substrate.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- ulvane0
- Outcome
- seedling emergencee0
- Direction
- enhancede0
- Value
- 44%e0
- Setting
- sterilized substratee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when soaked in seeds, ulvan enhanced seedling emergence by 55%, 30% and 44% on Fop-infested, non-infested and sterilized substrate, respectively.”
t0“common bean”
Claim · model-written summary
One, two or three ulvan applications similarly reduced early Fop colonization, but not late colonization.
- Taxon
- beane0
- Treatment
- applications of ulvane0
- Interactor
- Fope0pathogen
- Outcome
- Fop-colonizatione0
- Direction
- reducinge0
- Qualifier
- at earlier, but not at later phenological stagese0
Not reportedComparator
Verbatim
e0“one, two or three applications of ulvan similarly protected bean plants by reducing Fop-colonization at earlier, but not at later phenological stages.”
Claim · model-written summary
Ulvan reduced area under the disease progress curve by 27%.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- ulvane0
- Interactor
- Fusarium oxysporum f. sp. phaseoliFusarium oxysporum f. sp. phaseolit0pathogen
- Outcome
- area under disease progress curvee0
- Direction
- decreasede0
- Value
- 27%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ulvan significantly decreased the area under disease progress curve by 27%.”
t0“Fusarium oxysporum f. sp. phaseoli on common bean”
The same questions in other papers
seed treatment · Fusarium oxysporum f. sp. phaseoli · Phaseolus vulgaris (common bean)Positive and negative results
1 in the opposite direction
- 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.