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plant hormone

A Dictionary of Plant Sciences | 1998 | 435 words | Copyright

plant hormone (phytohormone) A compound that is synthesized by a plant, but is not a nutrient, coenzyme, or detoxification product, and which regulates growth, differentiation, or other specific physiological processes. It is classically defined as being ‘made at one site and functioning at another’; but in fact it is made by various tissues, transported actively or passively and affects most tissues within the plant.

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MICHAEL ALLABY. "plant hormone." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

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