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Complex phytoecdysteroid cocktail of Silene otites (Caryophyllaceae)
Author(s) -
Báthori M.,
Girault J.P.,
Kalasz H.,
Mathé I.,
Dinan L.N.,
Lafont R.
Publication year - 1999
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/(sici)1520-6327(1999)41:1<1::aid-arch2>3.0.co;2-r
Subject(s) - caryophyllaceae , ecdysteroid , biology , bioassay , 20 hydroxyecdysone , carbon skeleton , botany , biochemistry , stereochemistry , chemistry , larva , genetics
Several new minor ecdysteroids from Silene otites (Caryophyllaceae) have been purified and identified. This plant species had previously been shown to contain a complex ecdysteroid cocktail, with 20‐hydroxyecdysone as the major component, and significant amounts of 2‐deoxyecdysone, 2‐deoxy‐20‐hydroxyecdysone, and 20‐hydroxyecdysone 22‐acetate, and a set of minor ecdysteroids. The use of powerful techniques for purification and spectroscopic analyses has now allowed the isolation and identification of more than 30 different molecules including 21‐hydroxylated ecdysteroids, thus adding a new position of the carbon skeleton that can be modified in ecdysteroids. Thus, in S. otites, a complex array of individual reactions can be used in various combinations leading both to major and minor components. Deciding whether this represents a random process without biological consequences or if (some of) the various minor components may play a specific role in, e.g., insect‐plant relationships, will require the extensive use of appropriate in vitro and in vivo bioassays. Arch. Insect Biochem. Physiol. 41:1–8, 1999. © 1999 Wiley‐Liss, Inc.