Claim · model-written summary
Zinc at 10 mug/ml increased in vitro microconidia production by the pathogen over 100-fold.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- zinc at concentrations as low as 10 mug/mle2
- Interactor
- Fusarium oxysporum f. sp. radicis-lycopersici
Fusarium oxysporum f. sp. radicis-lycopersicie1pathogen - Outcome
- production of microconidiae4
- Direction
- increasede4
- Value
- 100-folde4
- Setting
- in vitroe3
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Crown and root rot of tomato caused by Fusarium oxysporum f. sp. radicis-lycopersici”
e2“zinc at concentrations as low as 10 mug/ml abolished production of the phytotoxin fusaric acid”
e3“In in vitro studies with the pathogen”
e4“increased production of microconidia over 100-fold”
Title
Brion K. Duffy; Geneviève Défago Phytopathology 1997. doi:10.1094/phyto.1997.87.12.1250
Other claims from this paper (16)
- Intervention effect Zinc EDTA amendment alone did not reduce tomato Fusarium disease.
- Intervention effect Zinc EDTA amendment in the presence of CHA0 reduced tomato Fusarium disease by 25%.
- Intervention effect Copper EDTA amendment alone reduced tomato Fusarium disease.
- Intervention effect Copper EDTA amendment increased the biocontrol activity of CHA0 in soilless culture.
- Intervention effect Copper EDTA had a similar effect on the pathogen in vitro as zinc.
- Intervention effect Zinc at 10 mug/ml abolished in vitro production of the phytotoxin fusaric acid by the pathogen.
- Intervention effect Zinc at 10 mug/ml reduced in vitro total biomass of the pathogen.
- Intervention effect Ammonium-molybdate neither improved the biocontrol activity of CHA0.
- Intervention effect Ammonium-molybdate did not affect production of fusaric acid or microconidia.
- Observation CHA0 did not degrade fusaric acid.
- Intervention effect Fusaric acid at 0.12 mug/ml repressed production by CHA0 of the antibiotic 2,4-diacetylphloroglucinol.
- Intervention effect Fusaric acid did not affect recovery of preformed antibiotics.
- Intervention effect Fusaric acid did not affect bacterial growth even at 200 mug/ml.
- Intervention effect Zinc amendments reduced fusaric acid production in the rockwool bioassay.
- Intervention effect Zinc amendments enhanced 2,4-diacetylphloroglucinol production in the rockwool bioassay.
- Mechanism Zinc improved biocontrol activity by reducing fusaric acid production by the pathogen, which increased antibiotic production by the biocontrol agent.