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Schematic representation of the membrane-separated coculture of AM fungi and M. truncatula. a, Excised (Ri T-DNA-transformed) roots; b, seedlings. c, Detail of the corridor containing dense hyphal growth and ramifications, in which MtENOD11 induction occurs. 1, Spores; 2, location of membrane; 3, primary root; 4, secondary root; 5, tertiary root; 6, negatively geotropic germ tubes; 7, corridor containing hyphal ramifications.
