Supporting Information Fig. S1. Global distribution of available information on Neotyphodium/Epichloë fungal endophytes (published in peer reviewed articles). Data correspond to wild grass populations (sown pastures were excluded) and each collection site is indicated by a black circle. Colour pattern indicates the net primary productivity according to the categories established in our analysis (see text for details). Table S1. Distribution of studied species per biome and country and the corresponding reference sources. Biome Country Boreal forests/taiga Finland Sweden Tundra Canada Grass species Festuca ovina Reference Wäli et al. 2007 F. rubra F. ovina Granath et al. 2007 F. rubra Granath 2007; Saona et al. 2010 F. vivipara Granath et al. 2007 F. altaica Koh & Hik 2007 F. rubra Finland F. ovina F. rubra Norway F. ovina Wäli et al. 2007 Sweden F. ovina Granath et al. 2007 F. rubra F. vivipara Deserts and xeric shrublands Mediterranean forests, woodlands, and scrub China Elymus dahuricus Zhang & Nan 2007 Iran B. tomentellus Mirlohi et al. 2006 USA Achnatherum robustum Faeth et al. 2006 Lolium rigidum Canals et al. 2008 L. sp. Lewis et al. 1997 Australia France Italy F. arundinacea Morocco F. arundinacea Clement et al. 2008 F. rubra Zabalgogeazcoa 1999 L. rigidum Canals et al. 2008 F. arundinacea Clement et al 2008 Achnatherum speciosum Afkhami 2012 Spain Tunisia USA F. idahoensis L. multiflorum L. perenne Montane grasslands and shrublands China E. dahuricus Zhang & Nan 2007 Argentina F. hieronymi Iannone et al. 2011 P. huecu Temperate broadleaf and mixed forests Argentina B. setifolius Novas et al.2007 Phleum alpinum P. spiciformis Australia L. perenne Reed et al. 2000 2 China Denmark Finland E. dahuricus Zhang & Nan 2007 L. perenne Mette Dahl & Roulund 2004 F. ovina Wäli et al. 2007 F. rubra F. phoenix Saari et al. 2010 F. eskia Gonzalo-Turpin et al. 2010 L. sp. Lewis et al. 1997 Iran B. tomentellus Mirlohi et al. 2006 Japan L. multiflorum Yamashita et al. 2010 F. ovina Wäli et al. 2007 France Norway F. rubra Sweden UK F. phoenix Saari et al. 2010 F. arundinacea Spyreas et al. 2001 F. obtusa F. paradoxa USA Agrostis perennans Rudgers et al. 2009 Brachyelytrum erectum Cinna arundinacea E. hystrix E. riparius E. virginicus F. subverticillata Tintjer et al. 2008; Afkhami & Rudgers 2008; Rudgers 2009 Afkhami & Rudgers 2008; Rudgers 2009 Rudgers & Swafford 2009; Rudgers et al. 2009; Afkhami & Rudgers 2008 Afkhami & Rudgers 2008; Rudgers 2009 P. alsodes P. sylvestris Temperate coniferous forests Sphenopholis obtusata Rudgers et al. 2009 China E. dahuricus Zhang & Nan 2007 France L. sp. Lewis et al. 1997 Iran B. tomentellus Mirlohi et al. 2006 Morocco F. arundinacea Clement et al. 2008 Tunisia F. arundinacea USA Achnatherum robustum Faeth et al. 2006 Agrostis hyemalis Rudgers et al. 2009 E. virginicus Rudgers & Swafford 2009; Rudgers 2009 F. arizonica Saikkonen et al. 1999 F. idahoensis Afkhami 2012 P. annua Rudgers et al. 2009 P. autumnalis Sphenopholis longiflora Temperate grasslands, savannas and shrublands Argentina B. auleticus Iannone et al. 2009; 2011 B. setifolius Novas et al. 2007 F. arundinacea Gundel et al. 2009 3 L. multiflorum Phleum alpinum Novas et al. 2007 P. bonariensis Iannone et al. 2011 P. durifolia P. lanuginosa P. spiciformis Novas et al. 2007 E. dahuricus Zhang & Nan 2007 Iran B. tomentellus Mirlohi et al. 2006 USA E. virginicus Rudgers & Swafford 2009; Rudgers 2009 F. subverticillata Afkhami & Rudgers 2008 F. versuta Rudgers et al. 2009 L. multiflorum Afkhami 2012 China Sphenopholis nitida Tropical and subtropical coniferous forests USA Achnatherum lobatum Afkhami & Rudgers 2008 Rudgers et al. 2009 F. ligulata Tropical and subtropical grasslands, savannas and shrublands Argentina B. auleticus Iannone et al. 2009, 2011 USA E. virginicus Rudgers et al. 2009 P. autumnalis References Table S1 Afkhami ME. 2012. 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