BIOL 1050 Lecture Notes - Lecture 7: Busseola Fusca, Pennisetum Purpureum, Eldana

• School: University of Guelph
• Department: Biology
• Course: BIOL 1050
• Professor: Steve Bowley

Document Summary

A(cid:374)tago(cid:374)istic associatio(cid:374)s: mutualistic vs antagonistic, mutualistic: herbivore resistance (insect and animals), stress tolerance. Lays eggs on leaf surface: affects corn, sorghum. Started effort for farmers to apply this in their farms. Desmodium controlling striga: roots produce isoflavanones, stimulate germination of striga seed. Inhibit attachment of striga roots to maize roots: combination of growth promotion and allelopathy, reduces striga. Other plant combinations: molasses grass (melinis minutiflora p. Beau(cid:448). (cid:895), (cid:862)push(cid:863) of afri(cid:272)a(cid:374) sugar(cid:272)a(cid:374)e (cid:271)orer (cid:894)eldana: how does it impact food sources, bacillus thurengiensis (bt, soil bacterium, used as biological pesticide (insecticide, produces crystal proteins (cry proteins) that are toxic to insect larvae. Introduced into crop plants: organic bacterial suspension contains many types of cry proteins, gm plant produces specific cry protein, ex. More antagonistic associations: cyanogenic compounds, 250 genera, 1000+ species, +21 different cyanogenic glycosides. Linkage of a sugar (glucose) and a cyanide containing molecule: amygdalin (rose family, dhurrin (sorghum and johnson grass)