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oospore
biology
Learn about this topic in these articles:
Charophyceae
- In algae: Evolution and paleontology of algae
The oospore, the fertilized female egg, has spirals on its surface that were imprinted by the spiraling protective cells that surrounded the oospore. Oospores from before about 225 million years ago had right-handed spirals, whereas those formed since that time have had left-handed spirals. The reason…
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late blight
- In late blight
Given that the oospores have thickened walls and are able to persist in the soil for several seasons, the disease can be difficult to eradicate. Resistant tomato and potato varieties have been developed.
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