Abstract
The endogenous levels of abscisic acid (ABA) and jasmonic acid (JA) were analyzed in wheat seedlings grown in water, a system which in the past has been used to test the effects of these plant growth inhibitors. The levels in different plant parts and in the medium were measured by gas chromatography-mass spectrometry-selected ion monitoring, using [2H3]ABA and [2H6]JA as internal standards. In every plant part, JA levels were about 2 orders of magnitude greater than those of ABA. The exudation of JA from roots per seedling was about 14,000-fold greater than that of ABA, although the roots contained only about 170 times more JA than ABA. It is suggested that JA is a possible allelopathic compound.
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Dathe, W., Parry, A.D., Heald, J.K. et al. Jasmonic acid and abscisic acid in shoots, coleoptiles, and roots of wheat seedlings. J Plant Growth Regul 13, 59–62 (1994). https://doi.org/10.1007/BF00210947
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DOI: https://doi.org/10.1007/BF00210947