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Signaling and Communication in Plant Symbiosis pp 143–181Cite as

Signalling in the Epichloë festucae: Perennial Ryegrass Mutualistic Symbiotic Interaction

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Part of the book series: Signaling and Communication in Plants ((SIGCOMM,volume 11))

Abstract

Epichloë festucae is a biotrophic fungus that forms symbiotic associations with temperate grasses of the Festuca and Lolium spp. The association between E. festucae and L. perenne (perennial ryegrass) is a good experimental system to study these endophyte–grass associations. Integral to the establishment and maintenance of these mutualistic associations is mutual communication between the endophyte and host partner. This communication will likely involve many well-known signalling pathways. Mitogen-activated protein kinase (MAPK) cascades and second messenger signalling pathways involving cAMP and calcium are the main pathways for transduction of signals perceived by cell surface receptors such as G-protein coupled receptors and histidine kinases. Here we review what is currently known about signalling mechanisms in the E. festucae–L. perenne symbiosis including a bioinformatics analysis of the E. festucae genome to identify which components of these key signalling pathways have been conserved in this organism. Where pathways are yet to be functionally analysed in E. festucae we present data from fungal plant pathogens and try to predict possible functions for these pathways in endophyte associations.

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Acknowledgements

This research was supported by grants from the Tertiary Education Commission (TEC) to the Bio-Protection Research Centre, the Royal Society of New Zealand Marsden Fund (07MAU046), Massey University and by a Top Achiever Doctoral Scholarship to CE from TEC. We thank Emma Brasell (IMBS) and Dimitry Sokolov (Manawatu Microscopy and Imaging Centre, IMBS) for preparation of the image used in Fig. 1.

The E. festucae E2368 and E894 genome sequences were made available by Christopher Schardl through grants EF-0523661 from the US National Science Foundation (to Christopher Schardl, Mark Farman and Bruce Roe) and 2005-35319-16141 from the US Department of Agriculture National Research (to Christopher Schardl).

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  1. Institute of Molecular BioSciences, Centre for Functional Genomics, Massey University, 11 222, Palmerston North, 4442, New Zealand

    Carla Eaton, Milena Mitic & Barry Scott

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  1. Dipto. Biologia Vegetale, Universita Torino Dipto. Biologia Vegetale, Torino, Italy

    Silvia Perotto

  2. Botanik (IZMB), Universität Bonn Inst. Zelluläre und Molekulare, Bonn, Germany

    František Baluška

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Eaton, C., Mitic, M., Scott, B. (2012). Signalling in the Epichloë festucae: Perennial Ryegrass Mutualistic Symbiotic Interaction. In: Perotto, S., Baluška, F. (eds) Signaling and Communication in Plant Symbiosis. Signaling and Communication in Plants, vol 11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20966-6_7

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