The endophytic fungus Piriformospora indica reprograms barley to salt-stress tolerance, disease resistance, and higher yield. - Waller,F..; Achatz,B..; Baltruschat,H..; Fodor,J..; Hückelhoven,R..; Neumann,C..; von Wettstein,D..; Franken,P..; Kogel,K.-H.. (Proceedings of the National Academy of Sciences of the USA, 2005)