Lecture twelve 10 27 08

Lecture twelve 10 27 08 - Healthy flowers Claviceps...

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Unformatted text preview: Healthy flowers Claviceps purpurea [common name = ergot] Other Claviceps species infect other plant species Millet Sorghum Infected by other species of Claviceps Corn smut Why infect flowers? Would this be an advantageous site for infection? Flowers are the site of fruit development Plant supplies nutrients to developing grain Which the fungus can divert to itself survive without host produce spores in spring Spores infect flowers How to prevent ergot Use ergot-free seed Incorporate crop residue Bury ergots Cannot release spores Ergots will decompose in soil Crop rotation Quality control Inspection of seed lots < 0.4% ergot by weight Cannot use as animal feed Ergot affects animals Cannot use as animal feed Science helps us to solve problems And may yield other benefits Benefits of ergot? To induce abortion It was used in the Middle Ages Side-effects Extract active ingredients Reduce bleeding after child-birth Ergonovine Treat headaches Ergotamine Effective for some who suffer from migraine headaches...
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This note was uploaded on 10/03/2009 for the course SAS 30 taught by Professor Wilhelm during the Fall '08 term at UC Davis.

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Lecture twelve 10 27 08 - Healthy flowers Claviceps...

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