Jasmonic acid is synthesized from linolenic acid which is an important fatty acid. Promotion of senescence, abscission, tuber formation, fruit ripening, pigment formation, and tendril coiling. They appear to have important roles in plant defense by inducing proteinase synthesis. Polyamines There is some controversy as to whether these compounds should be classified with hormones. They are widespread in all cells and exert regulatory control over growth and development at very low levels.
Development is affected by plants having low levels of polyamines.
Polyamines have a wide range of effects on plants. They appear to be essential in growth and cell division. This Web Page was created by Ken Maas at Northern Illinois University.