auxins
Plant growth regulators
Auxins are plant hormones that regulate growth, particularly cell elongation.
They cause stems to bend toward light and roots to grow downward.
Gardeners use synthetic auxins as rooting hormones to encourage cuttings to develop roots.
The plural dominates because plants produce several related compounds with similar effects.
biochemistry
Plant growth hormone
- tryptophanEssential amino acid precursor
- biosynthesisLiving production of molecules
- conjugationVerb form variation system
- degradationDecline in condition
physiology
Stimulus-directed movement
- phototropismGrowth response to illumination
- gravitropismPlant gravity response
- senescenceGradual functional decline with age
- cell divisionParent splitting into offspring
phytohormones
Simplest alkene, C₂H₄
- salicylic acidWillow-derived beta hydroxy compound
- synergismCombined effect exceeding individual contributions
- antagonismActive opposition or hostility
- hormone balanceStable levels of body chemicals
horticulture
Substance promoting plant propagation
- cuttingsSnipped portions for growing
- propagationAct of spreading widely
- cloningMaking identical copies
- graftingJoining tissues to grow together
tissue culture · transplanting · nursery · greenhouse · hydroponics · striking
indoleacetic acid
Plant growth hormone
- tryptophanEssential amino acid precursor
- biosynthesisLiving production of molecules
- conjugationVerb form variation system
tropism
Stimulus-directed movement
- phototropismGrowth response to illumination
- gravitropismPlant gravity response
- senescenceGradual functional decline with age
ethylene
Simplest alkene, C₂H₄
- salicylic acidWillow-derived beta hydroxy compound
- synergismCombined effect exceeding individual contributions
- antagonismActive opposition or hostility
rooting hormone
Substance promoting plant propagation
- cuttingsSnipped portions for growing
- propagationAct of spreading widely
- cloningMaking identical copies
grafting · tissue culture · transplanting · nursery · greenhouse · hydroponics · striking
- rootstaproot, root system, root tip, fibrous root, primary root
- botanybotany, plants, plant biology, plant, plant anatomy
- plant physiologyphotosynthesis, transpiration, germination, stomata, respiration
- Plant Boostersrooting hormone, biofertilizers, brassinosteroids, ethylene, salicylic acid
- plant compoundsalkaloids, flavonoids, terpenes, carotenoids, polyphenols
- Plant Hormonesethylene, brassinosteroids, salicylic acid, strigolactones, ABA