Plant Chemical Regulation

Plant Chemical Regulation - Plant Chemical Regulation

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Plant Chemical Regulation plant chemical regulation  - plant hormones have multiple functions, unlike that of animals  auxin - made in apical meristem o if lacking, plant will no longer grow towards light o promotes stem, vascular tissue, root growth o suppresses lateral bud growth, leaf abscission o “agent orange” - derived from auxin to speed up growth, make trees age faster cytokinins - stimulates cell division, differentiation o promotes lateral growth gibberellins - synthesized from leaves o apical growth, stimulates protein synthesis ethylene - gaseous o drops damaged leaves when in contact w/ toxin o ripens fruit abscissic acid - controls stomata opening o stimulates winter dormancy tropisms  - positive/negative growth toward external stimuli  photoperiodism - response to light o lets plant know what time of year it is o bright red light >> Pr converts to Pfr phytochrome>> inhibits flower growth
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Plant Chemical Regulation - Plant Chemical Regulation

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