Biological Activities of the Methyl Ester of Gibberellin A73, a Novel and Principal Antheridiogen in Lygodium japonicum
- 1 March 1989
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant and Cell Physiology
- Vol. 30 (2) , 201-205
- https://doi.org/10.1093/oxfordjournals.pcp.a077730
Abstract
The synthetic methyl ester of GA73 (GA73-Me) and the natural antheridiogen of Lygodium japonicum showed almost the same activity to induce the formation of antheridia in dark-grown protonemata of L. japonicum at concentrations of 10-14 M and higher. Thus, it appears that the principal antheridiogen in L. japonicum is GA73-Me. GA73-Me inhibited formation of ar-chegonia in light-grown prothallia of L. japonicum at concentrations of 10-11 M and higher and induced germination of spores in the dark in this species at the same range of concentrations. GA73(free acid form) promoted growth of seedlings of dwarf rice and hypocotyls of cucumber seedlings at dosages of and above 1 and 100 ng/plant, respectively. Eight compounds related to GA73-Me, including antheridiogens of Anemia phyllitidis and Anemia mexicana, were active in inducing an-theridial formation in L. japonicum, although their activities were considerably lower than that of GA73-Me.Keywords
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