BIOL 1108 Lecture Notes - Lecture 11: Phytophthora, Herbivore, Heterotroph
24 Oct 2018
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First line of defense: cuticle, hairs, spines, . Threat -> recognition -> defense arms race. Plants have evolved mechanisms to protect themselves from infection by pathogens, which include viruses, bacteria, fungi, worms, and even parasitic plants. Plants use chemical, mechanical, and ecological defenses to protect themselves from being eaten by herbivores. The production of defenses is costly, resulting in trade-offs between protection and growth. Common name is potato late-blight fungus also impacts tomatoes. First line of defense: epidermis with its cuticle. Parasites feed on living (biotropic) or dead (necrotropic) cells. Some rely on the living cells to reproduce (use the cell"s machinery to replicate dna). Parasitic plants, tap into the host plant"s tissue to retrieve water and minerals or sugars. Containment => response from plant => recognition. Basal resistance <= receptors recognizing molecular trait of pathogen (general.
