Identification of Ten Gibberellins from Sporophytes of the Tree fern, Cyathea australis.
Ten gibberellins (GAs) have been identified by Kovats retention indices and full mass spectra from GC-MS analysis of purified extracts of sporophytes of the tree-fern, Cyathea australis. These include the known GA(1), GA(4), GA(9), GA(15), GA(24), GA(35), and GA(58) and three new GAs, 12beta-hydroxyGA(9) (GA(69)), 12alpha-hydroxyGA(9) (GA(70)) and 12beta-hydroxyGA(4) (GA(71)). The structure of GA(71) was established by the preparation and characterization of its methyl ester (as a metabolite of GA(4) methyl ester in a culture of prothallia of Lygodium japonicum).
Yamane
H
H
Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan.
Yamaguchi
I
I
Kobayashi
M
M
Takahashi
M
M
Sato
Y
Y
Takahashi
N
N
Iwatsuki
K
K
Phinney
B O
BO
Spray
C R
CR
Gaskin
P
P
Macmillan
J
J