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Table 2. Nodulation and N2 fixation properties of E. meliloti WSM1022 on selected Medicago spp. Data compiled from [7,11]

From: Genome sequence of Ensifer meliloti strain WSM1022; a highly effective microsymbiont of the model legume Medicago truncatula A17

Species Name Cultivar or Accession Growth Habit Nodulation N2 fixation Comment
M. truncatula A17 Annual Nod+ Fix+ Highly effective
M. truncatula Jemalong Annual Nod+ Fix+ Highly effective
M. truncatula Caliph Annual Nod+ Fix+ Highly effective
M. littoralis Harbinger Annual Nod+ Fix+ Highly effective
M. tornata Tornafield Annual Nod+ Fix+ Highly effective
M. sphaerocarpos Orion Annual Nod+ Fix+ Poorly effective
M. arabica SA36043 Annual Nod+ Fix No fixation
M. polymorpha Santiago Annual Nod+ Fix No fixation
M. murex Zodiac Annual Nod Fix No nodulation
M. sativa Sceptre Perennial Nod+ Fix+ Highly effective
  1. Note that ‘+’ and ‘−’ denote presence or absence, respectively, of nodulation (Nod) or N2 fixation (Fix).