Table 3.

Abilities of bacterial isolates to grow on nitrate media and detection of nasA PCR gene product

IsolateGrowth on NO3 as sole nitrogen sourcenasA PCR amplification
Barents Sea isolates
 Barents Sea isolate 4a Y+
 Barents Sea isolate 10a Y+
 Barents Sea isolate 23N
 Barents Sea isolate 25a Y+
 Barents Sea isolate 32N
 Barents Sea isolate 1N
 Barents Sea isolate 2Y+
 Barents Sea isolate 3N
 Barents Sea isolate 5N
 Barents Sea isolate 6Y+
 Barents Sea isolate 7N
 Barents Sea isolate 8Y+
 Barents Sea isolate 9Y+
 Barents Sea isolate 12Y+
 Barents Sea isolate 13Y+
 Barents Sea isolate 14Y+
 Barents Sea isolate 15Y+
 Barents Sea isolate 16Y+
 Barents Sea isolate 18Y+
 Barents Sea isolate 19N
 Barents Sea isolate 20N
 Barents Sea isolate 21N
 Barents Sea isolate 22N
 Barents Sea isolate 24Y+
 Barents Sea isolate 26N
 Barents Sea isolate 27Y+
 Barents Sea isolate 28N
 Barents Sea isolate 29Y+
 Barents Sea isolate 30Y+
 Barents Sea isolate 31N
SAB isolates
 South Atlantic Bight AN+
 South Atlantic Bight BN
 South Atlantic Bight CN+
 Skidaway River 1Y+
 Skidaway River 2Y+
 Skidaway River 3N
  • a The doubling times of Barents Sea isolates 4, 10, and 25 on 10 mM NO3 as the sole N source were 3.78, 5.48, and 5.16 h, respectively.