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Plant hormones

There are five major classes of plant hormones (a.k.a. Plant growth regulators (Pgr's)) with perhaps a few others as candidates to take that place in the future. The five major hormone classes are Auxins[?], Cytokinins[?](CKs), Ethylene, Gibberellins[?] (GAs), and Abscisic Acid (ABA). Recently it has been suggested that Brassinosteroids[?] (BAs), Jasmonates[?] (JAs), Salicylates[?] (SAs), and Polyamines[?] are new classes of major hormones.

See also: Hormone

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