plant hormone

1. Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Auxins, cytokinins, gibberellins, and abscisic acid are examples of plant hormones.

2. Also called phytohormone

Example Sentences

"Craig was the one to really dig in, to confirm that this gene carries the plant hormone auxin, and it absolutely controls size in corn."

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It has long been known that auxin, a plant hormone, controls plant growth, root growth included.

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Now, Salk scientists have determined how a well-known plant hormone is crucial in controlling the angle at which roots grow.

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The University of Cambridge team previously engineered a series of biosensors using fluorescent light to visually communicate in real-time what is happening at the cellular level in plants, revealing the dynamics of critical plant hormones.

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Environmental Protection Agency — is typically pumped into sealed storage rooms to inhibit the production of ethylene, a plant hormone.

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