Knowra 2,4-Dichlorophenoxyacetic acid 2,4-Dichlorophenoxyacetic acid 2,4-Dichlorophenoxyacetic acid, commonly called 2,4-D, is a synthetic auxin herbicide that disrupts growth in susceptible broadleaf plants while leaving many grasses relatively unharmed.
Auxin : Auxins are plant hormones that regulate growth, development, and responses to environmental signals. 2,4-D mimics auxin signals and disrupts growth when susceptible plants receive excessive stimulation.
Broadleaf weed : A broadleaf weed is an unwanted plant with broad leaves, typically unlike narrow-leaved grasses. These plants are the principal targets of 2,4-D in grass-dominated crops and landscapes.
Synthetic auxin : A synthetic auxin is a man-made chemical that produces effects resembling those of plant auxin hormones. 2,4-D became one of the earliest commercially important chemicals in this wider class.
Herbicide drift : Herbicide drift is the unintended movement of herbicide droplets or vapors away from the target area. 2,4-D can injure nearby sensitive broadleaf plants when spray or vapor moves off target.
Auxin signaling pathway : The cellular system through which auxin perception changes gene expression and plant growth. 2,4-D hijacks this pathway, producing abnormal growth and eventual death in sensitive plants.
Cereal crop : A cereal crop is a grass cultivated for its edible grain, such as wheat, barley, or oats. Cereal grasses can often tolerate 2,4-D treatments that suppress broadleaf weeds.
Julius H. Quastel : Julius H. Quastel was a biochemist whose research contributed to understanding plant growth regulators and herbicides. His work on plant growth and chemical effects formed part of the research context for synthetic auxins.
Pesticide regulation : Pesticide regulation is the system of laws and decisions governing pesticide registration, sale, and use. 2,4-D products are governed by label requirements that set permitted uses and safeguards.
TIR1 : TIR1 is a plant receptor protein that helps auxin trigger the degradation of Aux/IAA transcriptional repressors. The herbicide can promote auxin-like receptor activity through the machinery that includes TIR1.
Lawn : A lawn is a managed area of grass maintained as a ground cover. 2,4-D is commonly used to remove broadleaf weeds while preserving established turf grasses.
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