IAA	indole-3-acetic acid.
IAA::uidA	auxin-inducible reporter; technique utilizes the uidA gene of Escherichia coli, which codes for the enzyme, β-glucuronidase.
ABA	abscisic acid.
AUX1 (AUXIN RESISTANT 1)/LAX (like AUX1)	auxin influx carriers, multi-membrane spanning transmembrane proteins sharing similarity to amino acid permeases.
HvACT	gene encoding actin of Hordeum vulgare.
HvGADPH	gene encoding glutamate dehydrogenase of Hordeum vulgare.
HvTubA	gene encoding Alpha tubulin-2B of Hordeum vulgare.
PIN	PIN-FORMED proteins, secondary transporters acting in the efflux of auxin from cells.
NPA	naphthylphthalamic acid, inhibitor of auxin transport.