highly significantp = 1.08 × 10 −2
Of the four modules associated with nodulation and also showing significant differences between species, the ‘brown’ module had the greatest number of most highly significant terms; ‘grey60’ had the significantly overrepresented biological process and molecular function terms of oxygen transport ( p = 1.08 × 10 −2 ) and oxygen transport activity ( p = 8.59 × 10 −3 ), while the other two modules had no overrepresented terms.