Claim · model-written summary
Sunflower leaf cultures and shoots could not be infected with Puccinia helianthi urediospores.
- Taxon
- sunflower
Helianthus annuuse0 - Interactor
- Puccinia helianthi
Puccinia helianthie0pathogen - Outcome
- infect sunflower leaf tissue cultures and shootse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Attempts to infect sunflower leaf tissue cultures and shoots in vitro with urediospores of Puccinia helianthi were not successful”
Title
Factors Affecting the Growth of Rust Fungi on Host Tissue Cultures
Ramesh Maheshwari; A. C. Hildebrndt Botanical Gazette 1967. doi:10.1086/336392
Other claims from this paper (13)
- Observation Attempts to infect host tissue cultures with urediospores failed.
- Observation Snapdragon cultures produced extracellular material inhibiting urediospore germination.
- Observation The inhibitory material could be leached in agar or water.
- Observation The inhibitory material was heat stable, dialysable, non-ionic, and insoluble in ether and ethanol.
- Observation Rust mycelium failed to invade proliferating sunflower and red-cedar host tissues.
- Observation Some sunflower hypocotyl explants proliferated and produced roots, leaves and flowers on defined medium.
- Observation Leaf callus was isolated from shoots developed in vitro.
- Observation Infected snapdragon culture developed aerial P. antirrhini mycelium.
- Observation Aerial mycelium formed white tufts 1-3 mm long.
- Observation Transferred mycelium did not continue growth on nutrient medium.
- Observation The mycelium could not infect host tissue cultures.
- Intervention effect Urediospore inoculation of epidermis covered snapdragon cultures did not produce infection.
- Observation Contact with germinated urediospores failed to infect callus.