| Abstract
| - The peanut plant (Arachis hypogaea) is known to produce stilbene phytoalexins as a defensiveresponse to fungal invasion; however, the distribution of phytoalexins among different organs of thepeanut plant at early stages of growth under axenic conditions has not been studied. Axenic plantsproduced a stilbenoid, resveratrol, as well as soluble bound and free phenolic acids, including4-methoxycinnamic acid, which is reported in peanuts for the first time. Neither resveratrol nor phenolicacids were found in the root mucilage; the prenylated stilbenes were restricted to the mucilage andwere not found in other organs of the peanut plant. These findings may lead to a better understandingof the defensive role of peanut stilbenes and phenolic acids. Keywords: Resveratrol; phytoalexins; mucilage; p-coumaric acid; ferulic acid; caffeic acid; 4-methoxycinnamic acid; phenolic acids; peanuts; groundnuts; Arachis hypogaea; HPLC-MS
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