Fungal lipochitooligosaccharide symbiotic signals in arbuscular mycorrhiza
Por:
Maillet F., Poinsot V., André O., Puech-Pagés V., Haouy A., Gueunier M., Cromer L., Giraudet D., Formey D., Niebel A., Martinez E.A., Driguez H., Bécard G., Dénarié J.
Publicada:
1 ene 2011
Categoría:
Multidisciplinary
Resumen:
Arbuscular mycorrhiza (AM) is a root endosymbiosis between plants and glomeromycete fungi. It is the most widespread terrestrial plant symbiosis, improving plant uptake of water and mineral nutrients. Yet, despite its crucial role in land ecosystems, molecular mechanisms leading to its formation are just beginning to be unravelled. Recent evidence suggests that AM fungi produce diffusible symbiotic signals. Here we show that Glomus intraradices secretes symbiotic signals that are a mixture of sulphated and non-sulphated simple lipochitooligosaccharides (LCOs), which stimulate formation of AM in plant species of diverse families (Fabaceae, Asteraceae and Umbelliferae). In the legume Medicago truncatula these signals stimulate root growth and branching by the symbiotic DMI signalling pathway. These findings provide a better understanding of the evolution of signalling mechanisms involved in plant root endosymbioses and will greatly facilitate their molecular dissection. They also open the way to using these natural and very active molecules in agriculture. © 2010 Macmillan Publishers Limited. All rights reserved.
Filiaciones:
Maillet F.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Poinsot V.:
Laboratoire des IMRCP, UMR 5623 CNRS, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex, France
André O.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Puech-Pagés V.:
Université de Toulouse, UPS, UMR5546, BP42617, F-31326 Castanet-Tolosan Cedex, France
CNRS, UMR5546, BP 42617, F-31326 Castanet-Tolosan Cedex, France
Haouy A.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Gueunier M.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Université de Toulouse, UPS, UMR5546, BP42617, F-31326 Castanet-Tolosan Cedex, France
CNRS, UMR5546, BP 42617, F-31326 Castanet-Tolosan Cedex, France
Cromer L.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Giraudet D.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Formey D.:
Université de Toulouse, UPS, UMR5546, BP42617, F-31326 Castanet-Tolosan Cedex, France
CNRS, UMR5546, BP 42617, F-31326 Castanet-Tolosan Cedex, France
Niebel A.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
Martinez E.A.:
Centre de Recherches sur les Macromolécules Végétales, CNRS, Université Joseph Fourier, B.P. 53, F-38041 Grenoble Cedex 9, France
Driguez H.:
Centre de Recherches sur les Macromolécules Végétales, CNRS, Université Joseph Fourier, B.P. 53, F-38041 Grenoble Cedex 9, France
Bécard G.:
Université de Toulouse, UPS, UMR5546, BP42617, F-31326 Castanet-Tolosan Cedex, France
CNRS, UMR5546, BP 42617, F-31326 Castanet-Tolosan Cedex, France
Dénarié J.:
Laboratoire des Interactions Plantes-Microorganismes, UMR 441/2594, INRA-CNRS, B.P. 52627, F-31326 Castanet-Tolosan Cedex, France
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