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New Strigolactone Analogs as Plant Hormones with Low Activities in the Rhizosphere

Molecular Plant 2014年第4期7卷 675-690页

作者： Francois-Didier Boyer Alexandre de Saint Germain Jean-Bernard Pouvreau Guillaume Clave Jean-Paul Pillot Amelie Roux Amanda Rasmussen Stephen Depuydt dominique lauresserguesh Nicolas Frei dit Frey Thomas S.A. Heugebaert Christian V. Stevens Danny Geelen Sofie Goormachtig Catherine Rameau Institut Jean-Pierre Bourgin UMR1318 Institut National de la Recherche Agronomique (INRA)-AgroParisTech Route de Saint-Cyr (RD 10) F-78026 Versailles Cedex France Centre de Recherche de Gif Institut de Chimie des Substances Naturelles UPR2301 Centre National de la Recherche Scientifique (CNRS) 1 avenue de la Terrasse F-91198 Gif-sur-Yvette Cedex France Laboratoire de Biologie et de Pathologie Vegetales EA 1157 SFR 4207 QUASAV Universite de Nantes 44322 Nantes France Plant Production Faculty of Bioscience Engineering Ghent University Coupure links 653 Ghent 9000 Belgium Present address: School of Biosciences Division of Plant and Crop Production The University of Nottingham Sutton Bonington Leicestershire LE12 5RD UK Department of Plant Systems Biology VIB Ghent 9052 Belgium Department of Plant Biotechnology and Bioinformatics Ghent University Ghent 9052 Belgium Laboratoire de Recherche en Sciences Vegetales UMR 5546 Universite de Toulouse- Centre National de la Recherche Scientifique (CNRS) BP 42617 Auzeville F-31326 Castanet-Tolosan France Research Group SynBioC Department of Sustainable Organic Chemistry and Technology Faculty of Bioscience Engineering Ghent University Coupure links 653 B-9000 Gent Belgium

Strigolactones （SLs） are known not only as plant hormones, but also as rhizosphere signals for establishing symbiotic and parasitic interactions. The design of new specific SL analogs is a challenging goal in understanding the basic plant biology and is also useful to control plant architectures without favoring the development of parasitic plants. Two different molecules （23 （3＇-methyI-GR24）, 31 （thia-3＇-methyl-debranone-like molecule）） already described, and a new one （AR36）, for which the synthesis is presented, are biologically compared with the well-known GR24 and the recently identified CISA-1. These different structures emphasize the wide range of parts attached to the D-ring for the bioactivity as a plant hormone. These new compounds possess a common dimethylbutenolide motif but their structure varies in the ABC part of the molecules： 23 has the same ABC part as GR24, while 31 and AR36 carry, respectively, an aromatic ring and an acyclic carbon chain. Detailed information is given for the bioactivity of such derivatives in strigolactone synthesis or in perception mutant plants （pea rmsl and rms4, Arabidopsis max2 and, max4） for different hormonal functions along with their action in the rhizosphere on arbuscular mycorrhizal hyphal growth and parasitic weed germination.

关键词： strigolactones synthetic analogs Pisum sativum Arabidopsis root parasitic plants Gigaspora rosea plant growth regulator.

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