An endogenous chemical regulator coordinating plant growth, development or environmental responses. Its effect depends on concentration, tissue and the receiving signal transduction network.
A class of plant signals with developmental roles and functions in the rhizosphere, including stimulation of arbuscular mycorrhizal fungal branching.
A family of growth-regulatory proteins whose degradation is promoted by gibberellin signaling. Direct interactions with phytochrome-interacting factors connect hormone status to light-regulated growth.
A class of plant growth regulators. Gibberellin perception can promote degradation of DELLA proteins, releasing constraints on selected growth responses.
A class of growth regulators whose synthesis, directional transport and perception help organize plant growth. A change in auxin abundance and a change in auxin sensitivity are distinct mechanisms.
Directional cell-to-cell transport of auxin. Transporter abundance, polarity and activity influence local hormone distribution.
A plant hormone involved in water-stress responses, seed dormancy and other processes. In guard cells, ABA-dependent receptor inhibition of phosphatases permits kinase activation and stomatal closure.
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