PLP407 Lecture 13
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- List the fruiting bodies formed by rust fungi.
- Pycindia; basidium; aecium;uredium; telium
- What are your recomendations for managing fusiform in pine forest plantations?
- Well, give the sites each a hazard rating. Remove the infected trees (sanitation clearing) especially the ones with galls 12" or closer to the trunk. Use resistant stock and remove the alternate hosts from the surrounding area (oaks) Adjust the density for hazard level.
- What organism causes pine blister rust?
- Cornartium riblicola
- What is the likely explination for why white pine blister rust causes such devistation of all eastern and western white pine species?
- This is an exotic species and the native pines have no resistance built up.
- Do rusts prefer vigorous or stressed trees?
- These are obligate organisms so they prefer vigorous hosts.
- A gall on juniper is forming bright orange tendrils. What tree/shrub is in danger of infection?
- Hawthorn; crabapple; apple; quince
- Why is pine-pine (western) gall rust more dangerous to michigan christmas trees?
- This rust does not require an alternate host and can reinfect the same tree.
- ⬢ Two neighbors are bitter enemies. One finds a dying white pine that has pustules which contain a powdery mass and he brings a branch with the pustules to his neighbors yard and places it next to a 60yr old white pine. Next week the pine dies suddenly
- Well the branch contains the aecia of the white pine blister rust (the others ie. pine-pine, pine-oak, cause galls and NOT apustuals which contain powdery mass). And the aescospores are only capable of infecting the alternate host...Ribes. The branch did not kill the other tree and your neighbor is a douch.