BIOL 341 Lecture Notes - Germination, Cell Membrane, Meiosis
19 Jun 2014
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Ch. 14 signal transduction (for veggies) Brassinosteroid receptor (bri1, brassinosteroid insensitive 1) contains a kinase domain. Binding of plant hormone brassinosteroid to its receptor triggers auto- phosphorylation and dimerization with bri1 associated receptor kinase (bak1) Tfs trigger changes in gene expression: physiological (animal) vs. environmental (plant) signals: sessile vs. mobile. Aba signaling involves kinase and phosphatase activities. Phosphorylated (active) snrk2 phosphorylates downstream substances thereby inducing. Tfs ect important in stress response. Plants and bacteria employ similar signaling components and mechanisms: plants derived st components from both euk. Receiver domain (receivers signal) Signals can be pereceived at different locations within the plant. In trans membrane receptors (tmr), extracellular domains often bind ligand. Clicker: want insect resistant soybean: introduce genes that enhance the production of jasmonic acid. Ja gives a broad response. Signal transduction pathways in animals and plants differ in functional organization. Inactivation of transcriptional repressor common in plant signal transduction. Inactivation of negative regulation enables the activation of transcription factors.
