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Free keywords:
chemical polymorphism; costs; genetic variation; herbivory;
induced defenses; intraspecific plant competition; Nicotiana
attenuata; phenotypic plasticity; phenotypic variation;
protease inhibitors; volatile emission
Jasmonate-induced responses; slug-plant interactions; manduca-
sexta larvae; proteinase-inhibitors; induced defenses; tomato
plants; transgenic tobacco; inducible defense; insect
resistance; induced increases
Abstract:
Genotypes of the wild tobacco Nicotiana attenuata from different geographic regions in North America vary considerably in the level of constitutive and inducible trypsin protease inhibitors (TrypPIs), a potent direct defense. as well as in the productio