Although rhizobia that establish a nitrogen‐fixing symbiosis with legumes are also known to promote growth in non‐legumes, studies on rhizobial associations with wheat roots are scarce. We searched for Rhizobium leguminosarum symbiovar viciae ( Rlv ) strains naturally competent to endophytically colonize wheat roots. We isolated 20 strains from surface‐sterilized wheat roots and found a low diversity of Rlv compared to that ob...