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- Title
Competitive antagonism between IAA and indole alkaloid hypaphorine must contribute to regulate ontogenesis.
- Authors
Jambois, Anne; Dauphin, Aurélien; Kawano, Tomonori; Anicet Ditengou, Franck; Bouteau, François; Legu, Valérie; Lapeyrie, Frédéric
- Abstract
Since 1995 the role of fungal hypaphorine in plants has been widely investigated and its IAA-antagonist activity recognized. Evidence of competitive antagonism includes organ development, gene expression or molecule–molecule interaction levels. Based on present knowledge, three sites of hypaphorine/IAA competition and subsequent signalling pathways have been hypothesized: the extracellular signalling pathway, the intracellular signalling pathway, and the transmembrane signalling pathway. Hypaphorine with other active indole alkaloids should be regarded as a new class of IAA antagonist finely regulating specific steps of plant growth or development.
- Subjects
DEVELOPMENTAL biology; INDOLE alkaloids; PLANT growth; GENE expression; GENETIC regulation; LIFE spans; HYPAPHORINE
- Publication
Physiologia Plantarum, 2005, Vol 123, Issue 2, p120
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.2005.00474.x