9.3: Plant growth
- Created by: Katarinanokat
- Created on: 01-04-18 17:48
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- Plant Growth
- Meristems
- Apical Meristems
- Shoot apical meristem
- Grow up (against gravity)
- auxin stimulates growth on shady side
- root apical meristem
- grows down (against gravity)
- Auxin inhibits growth on shady side
- Shoot apical meristem
- Apical Meristems
- Hormones
- auxin
- stimulates: h+ into wall, less elastic, h20 comes in and it grows
- pumps into the shady side
- stimulate shoot growth
- inhibit root growth
- cytokines
- stimulate root growth
- gibberellin
- germinates
- growth stimulant
- auxin
- Tropisms
- gravitropism
- auxin accumulate on lower side to grow against gracity
- phototropism
- auxin accumulate to dark side
- Roots: inhibit so it grows away form light
- shoot: stimulate so grows to light
- auxin accumulate to dark side
- gravitropism
- Micro-propagation
- tissue from shoot apex grown
- grown in growth medium
- too much auxin, shoot grows
- much cytokines, root grows
- once roots grow it goes into soil
- used for bulking, virus prevention, and rare species
- Meristems
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