Tuber Induction in Potato: The Possible Role of Hydroxylated Jasmonic Acids
Abstract
Since the early fifties, a large number of papers have been published on the role of ‘classical’ plant hormones in tuber induction in potato. However, no (mix of) compound(s) was found that could explain tuber induction.
Attempts to isolate tuber-inducing compounds from leaves of tuber-bearing potato plants are hindered by a strong decrease of biological activity during the isolation process. The occurrence of hydroxylated jasmonic acids, and not jasmonic acid itself, in leaflets of Solanum demissum is positively correlated with tuber initiation. Presumably the decrease of the biological activity is caused by a change in the stereoconfiguration of (hydroxylated) jasmonic acids. The biologically most active configuration of (hydroxylated) jasmonic acids is known to be unstable after extraction from leaflets. If hydroxylated jasmonic acids are involved in tuber induction, enzymes that catalyse the hydroxylation of jasmonic acid could play an important role in this process.
Keywords
Tuber Formation Jasmonic Acid Solanum Tuberosum Solanum Species Tuber InitiationPreview
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References
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