Effects of C6C10 alkenals and alkanals on eliciting a defence response in the developing cotton boll
1992; Elsevier BV; Volume: 31; Issue: 7 Linguagem: Inglês
10.1016/0031-9422(92)83269-5
ISSN1873-3700
Autores Tópico(s)Biological Activity of Diterpenoids and Biflavonoids
ResumoIn separate experiments, microbial-free compressed air carried individual C6, C7, C8, C9, C10-alkenals and alkanals into enclosed systems containing artificially wounded and non-wounded Acala SJ-2 developing cotton boils. Two days after treatment, discs were excised from the treated cotton bolls surfaces and were extracted to determine the induction of the sesquiterpenoid naphthol phytoalexins, 2,7-dihydroxycadelene and 2-hydroxy-7-methoxy cadalene, their oxidation products lacinilene C and lacinilene C 7-methyl ether, and the coumarin phytoalexin scopoletin. Highest concentrations of the described phytoalexins were elicited by C6C10 alkenals in artificially wounded cotton bolls. C6C10 alkenals may function as volatile elicitors of a defence response in the cotton plant.
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