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In cotton, sesquiterpene phytoalexins are elicited in response to bacterial or fungal infection. A Gossypium arboreum cell suspension culture which produces the sesquiterpene phytoalexin gossypol showed a time-dependent 10-fold increase in a 1.9-kb mRNA in response to a challenge by a preparation
Eupatorium adenophorum is a malignant invasive plant possessing extraordinary defense potency, but its chemical weaponry and formation mechanism have been rarely investigated. We identified six cadinene sesquiterpenes including two volatiles (amorpha-4,7(11)-diene and (-)-amorph-4-en-7-ol) and four
The cotton (+)-delta-cadinene synthase (CAD1), a sesquiterpene cyclase, catalyzes a branch-point step leading to biosynthesis of sesquiterpene phytoalexins, including gossypol. CAD1-A is a member of CAD1 gene family, and its promoter contains a W-box palindrome with two reversely oriented TGAC
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Five Vitis vinifera sesquiterpene synthases were characterized, two was previously uncharacterized, one being a caryophyllene/cubebene synthase and the other a cadinene synthase. Residue differences with other Vitis sesquiterpene synthases are described. The biochemical composition of