Claim · model-written summary
Osmiophilic material infiltrated invading hyphae and formed an internal wall coating or polymorphic droplets.
- Taxon
- Cucumber
Cucumis sativust0 - Interactor
- Pythium ultimumGlobisporangium ultimumt0pathogene0
- Outcome
- internal coating of the cell wall or a network of polymorphic dropletse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This material was also found to infiltrate into the invading hyphae to form either an internal coating of the cell wall or a network of polymorphic droplets in the area previously occupied by the cytoplasm.”
t0“Cucumber: Beneficial Effect of the Endophytic Bacterium Serratia plymuthica on the Protection Against Infection by Pythium ultimum”
Title
Nicole Benhamou; Serge Gagné; Dominique Le Quéré; et al. Phytopathology 2000. doi:10.1094/phyto.2000.90.1.45
Other claims from this paper (9)
- Intervention effect Serratia pretreatment reduced cucumber seedling disease after Pythium inoculation relative to untreated plants.
- Intervention effect Bacterized seedlings restricted fungal colonization to outer root tissues.
- Association Restricted colonization correlated with callose rich wall appositions and osmiophilic material.
- Observation Hyphae surrounded by electron opaque material showed cytoplasmic disorganization and often protoplasm loss.
- Observation Pythium cell walls were regularly labeled by beta-1,4-exoglucanase despite their osmiophilic coating.
- Observation Wall appositions contained callose, pectin and cellulose.
- Observation Wall apposition cores contained glucosides, lipids and phenolics.
- Observation Wall appositions also contained galactose residues among minor polysaccharides.
- Mechanism The authors conclude that Serratia sensitizes cucumber to faster, more effective barriers against Pythium.