Claim · model-written summary
Cucumber seedlings grown without external nitrogen remained susceptible to infection for a longer time than seedlings given a complete nutrient solution with nitrogen.
- Taxon
- Cucumber
Cucumis sativuse0 - Treatment
- no external supply of nitrogene1
- Interactor
- fungus of the Pythium typee2pathogen
- Outcome
- remained susceptible to infectione1
- Direction
- for a longer timee1
- Comparator
- complete nutrient solution containing nitrogene1
- Setting
- sand culturee0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumber seedlings were grown in sand culture”
e1“Seedlings grown with no external supply of nitrogen remained susceptible to infection for a longer time than seedlings supplied with a complete nutrient solution containing nitrogen”
e2“a fungus of the Pythium type, causing the damping-off disease”
Title
T. T. McClure; W. R. Robbins Botanical Gazette 1942. doi:10.1086/335087
Other claims from this paper (8)
- Association Young cucumber seedlings were more susceptible to infection than older ones.
- Intervention effect Cucumber seedlings grown in poor winter light remained susceptible to infection for a longer time than those grown in late spring and early summer light.
- Association Resistance to infection was associated with deposition of lignin in the cell walls of the tissue surrounding the infection area.
- Association Susceptibility to infection was associated with incomplete or absent cell-wall lignification, compared with resistance.
- Mechanism Deposition of lignin was found to be a function of living parenchymatous cells in cucumber.
- Observation Deposition of lignin occurred in the vicinity of a wound or fungus infection in cucumber.
- Observation In healthy cucumber plants, parenchymatous cells did not become lignified.
- Mechanism Cell-wall lignification, when continuous, may serve as a barrier preventing spread of the fungus in cucumber.