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Phytochemistry. 2009 Sep;70(13-14):1589-99. doi: 10.1016/j.phytochem.2009.07.003. Epub 2009 Aug 21.

The role of jasmonates in mutualistic symbioses between plants and soil-born microorganisms.

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  • 1Leibniz Institute of Plant Biochemistry (IPB), Department of Secondary Metabolism, Weinberg 3, D-06120 Halle (Saale), Germany. bhause@ipb-halle.de


Many plants are able to develop mutualistic interactions with arbuscular mycorrhizal fungi and/or nitrogen-fixing bacteria. Whereas the former is widely distributed among most of the land plants, the latter is restricted to species of ten plant families, including the legumes. The establishment of both associations is based on mutual recognition and a high degree of coordination at the morphological and physiological level. This requires the activity of a number of signals, including jasmonates. Here, recent knowledge on the putative roles of jasmonates in both mutualistic symbioses will be reviewed. Firstly, the action of jasmonates will be discussed in terms of the initial signal exchange between symbionts and in the resulting plant signaling cascade common for nodulation and mycorrhization. Secondly, the putative role of jasmonates in the autoregulation of the endosymbioses will be outlined. Finally, aspects of function of jasmonates in the fully established symbioses will be presented. Various processes will be discussed that are possibly mediated by jasmonates, including the redox status of nodules and the carbohydrate partitioning of mycorrhizal roots.

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