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Article: Hormones, Plant
- Article from:
- Biology
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CopyrightCOPYRIGHT 2002 The Gale Group Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Hormones, Plant
Plant hormones are chemical messengers that are produced in one part of the plant and have a physiological effect on a target tissue that may be distant from the site of production. When hormones reach the target tissue they can: (1) have a direct effect on the target tissue causing a rapid metabolic response; (2) involve the use of a second messenger within target cells; and/or (3) affect
transcription
of nuclear deoxyribonucleic acid (DNA). Unlike animals, plants have no specialized organs designed solely for hormone synthesis and
secretion
. Leaves, stem tips, root tips, flowers, seeds, and fruits all produce hormones. Most plant hormones are functional at very low ...
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Article: Plant 'hormones' and other gifts from Mother Nature ...
Better Nutrition;
March 1, 1997 ;
700+ words
...Wrinkles don't suddenly web across our face. Aged skin develops after prolonged unprotected sun exposure, stress, poor nutrition, inadequate care, and, of course, the passing of time. All of these factors hasten or cause the skin's underlying structures to collapse - and most of these factors are
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