BIOL 205 Study Guide - Final Guide: Apical Dominance, Auxin, Cytokinin
18 May 2016
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Document Summary
Interact with each other to produce spectrum of effects: some are more specific than others, concentration in cell determined by, rate of synthesis, rate of degradation, rate of sequestration. When shoot exposed to unidirectional light auxin on shaded side. Cytokinins: adenine derivatives, stimulation of cell division (cytokinesis cytoplasmic division, synthesized in the root cap and transported upwards to the shoot, lateral-shoot induction, anti-senescence hormones. Abscisic acid (aba: synthesized in response to dehydration of plant tissues, seed must dehydrate (otherwise die and rot) and accumulate aba, without aba vivipary. Developing seeds germinate precocious right on the mother plant. Inability to produce compromise ability to close stomata in response to drought. Ethylene: flammable gaseous hormone, synthesized from methionine, fruit-ripening hormone, autocatalytic, any ripe fruit will make other fruits ripen faster, can be oxidized to ethylene oxide. Brassinolide (bl: only truly steroid hormone in plants sterols, multiple effects on growth and development. Systemide: protein hormone, synthesized in response to insect attacks.
