M. truncatula accessions and their responses to RKN ifection. Lines with prefix DZA are from Algeria, CRE are from Crete, ESP are from Spain, GRC are from Greece, and P are from Portugal. Gall Index Scroes: S = Susceptible (>2.0), MS = Mildly Susceptible (1.1–1.9), R = Resistant (<1), ND = Not Determined.