Table 1.

Motility of R. meliloti L5-30 after transfer to SB containing an added nutrient, culture filtrate, or nonmetabolizable attractant

Added substance (concn)% Motile cells after incubation in supplemented SB for period of (min)a:
02030406090120180
No addition38252018161512b 10b
Nutrient
 Glucose (5 mM)4555 NDc 60ND60ND60
 Glutamine (5 mM)6060ND 60ND60ND60
Attractant
 Cycloleucine (5 mM)6060ND 60ND60ND60
 Cycloleucine (50 μM)5555ND 60ND60ND60
 Itaconate (5 mM)3535ND 35ND40ND30
Culture filtrate
 L5-3075ND75ND757575ND
 JJ1c1075ND80ND808080ND
 720165ND65ND656565ND
  • a Percentages are from single representative experiments that were repeated two or three times.

  • b Motile cells tumbled slowly; few swam straight.

  • c ND, not determined.